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e2fsck extremly slow, although enough memory exists

- by kaefert

I've got this external USB-Disk: kaefert@blechmobil:~$ lsusb -s 2:3 Bus 002 Device 003: ID 0bc2:3320 Seagate RSS LLC As can be seen in this dmesg output, there are some problems that prevents that disk from beeing mounted: kaefert@blechmobil:~$ dmesg | grep sdb [ 114.474342] sd 5:0:0:0: [sdb] 732566645 4096-byte logical blocks: (3.00 TB/2.72 TiB) [ 114.475089] sd 5:0:0:0: [sdb] Write Protect is off [ 114.475092] sd 5:0:0:0: [sdb] Mode Sense: 43 00 00 00 [ 114.475959] sd 5:0:0:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA [ 114.477093] sd 5:0:0:0: [sdb] 732566645 4096-byte logical blocks: (3.00 TB/2.72 TiB) [ 114.501649] sdb: sdb1 [ 114.502717] sd 5:0:0:0: [sdb] 732566645 4096-byte logical blocks: (3.00 TB/2.72 TiB) [ 114.504354] sd 5:0:0:0: [sdb] Attached SCSI disk [ 116.804408] EXT4-fs (sdb1): ext4_check_descriptors: Checksum for group 3976 failed (47397!=61519) [ 116.804413] EXT4-fs (sdb1): group descriptors corrupted! So I went and fired up my favorite partition manager - gparted, and told it to verify and repair the partition sdb1. This made gparted call e2fsck (version 1.42.4 (12-Jun-2012)) e2fsck -f -y -v /dev/sdb1 Although gparted called e2fsck with the "-v" option, sadly it doesn't show me the output of my e2fsck process (bugreport https://bugzilla.gnome.org/show_bug.cgi?id=467925 ) I started this whole thing on Sunday (2012-11-04_2200) evening, so about 48 hours ago, this is what htop says about it now (2012-11-06-1900): PID USER PRI NI VIRT RES SHR S CPU% MEM% TIME+ Command 3704 root 39 19 1560M 1166M 768 R 98.0 19.5 42h56:43 e2fsck -f -y -v /dev/sdb1 Now I found a few posts on the internet that discuss e2fsck running slow, for example: http://gparted-forum.surf4.info/viewtopic.php?id=13613 where they write that its a good idea to see if the disk is just that slow because maybe its damaged, and I think these outputs tell me that this is not the case in my case: kaefert@blechmobil:~$ sudo hdparm -tT /dev/sdb /dev/sdb: Timing cached reads: 3562 MB in 2.00 seconds = 1783.29 MB/sec Timing buffered disk reads: 82 MB in 3.01 seconds = 27.26 MB/sec kaefert@blechmobil:~$ sudo hdparm /dev/sdb /dev/sdb: multcount = 0 (off) readonly = 0 (off) readahead = 256 (on) geometry = 364801/255/63, sectors = 5860533160, start = 0 However, although I can read quickly from that disk, this disk speed doesn't seem to be used by e2fsck, considering tools like gkrellm or iotop or this: kaefert@blechmobil:~$ iostat -x Linux 3.2.0-2-amd64 (blechmobil) 2012-11-06 _x86_64_ (2 CPU) avg-cpu: %user %nice %system %iowait %steal %idle 14,24 47,81 14,63 0,95 0,00 22,37 Device: rrqm/s wrqm/s r/s w/s rkB/s wkB/s avgrq-sz avgqu-sz await r_await w_await svctm %util sda 0,59 8,29 2,42 5,14 43,17 160,17 53,75 0,30 39,80 8,72 54,42 3,95 2,99 sdb 137,54 5,48 9,23 0,20 587,07 22,73 129,35 0,07 7,70 7,51 16,18 2,17 2,04 Now I researched a little bit on how to find out what e2fsck is doing with all that processor time, and I found the tool strace, which gives me this: kaefert@blechmobil:~$ sudo strace -p3704 lseek(4, 41026998272, SEEK_SET) = 41026998272 write(4, "\212\354K[_\361\3nl\212\245\352\255jR\303\354\312Yv\334p\253r\217\265\3567\325\257\3766"..., 4096) = 4096 lseek(4, 48404766720, SEEK_SET) = 48404766720 read(4, "\7t\260\366\346\337\304\210\33\267j\35\377'\31f\372\252\ffU\317.y\211\360\36\240c\30`\34"..., 4096) = 4096 lseek(4, 41027002368, SEEK_SET) = 41027002368 write(4, "\232]7Ws\321\352\t\1@[+5\263\334\276{\343zZx\352\21\316`1\271[\202\350R`"..., 4096) = 4096 lseek(4, 48404770816, SEEK_SET) = 48404770816 read(4, "\17\362r\230\327\25\346//\210H\v\311\3237\323K\304\306\361a\223\311\324\272?\213\tq \370\24"..., 4096) = 4096 lseek(4, 41027006464, SEEK_SET) = 41027006464 write(4, "\367yy>x\216?=\324Z\305\351\376&\25\244\210\271\22\306}\276\237\370(\214\205G\262\360\257#"..., 4096) = 4096 lseek(4, 48404774912, SEEK_SET) = 48404774912 read(4, "\365\25\0\21|T\0\21}3t_\272\373\222k\r\177\303\1\201\261\221$\261B\232\3142\21U\316"..., 4096) = 4096 ^CProcess 3704 detached around 16 of these lines every second, so 4 read and 4 write operations every second, which I don't consider to be a lot.. And finally, my question: Will this process ever finish? If those numbers from fseek (48404774912) represent bytes, that would be something like 45 gigabytes, with this beeing a 3 terrabyte disk, which would give me 134 days to go, if the speed stays constant, and he scans the disk like this completly and only once. Do you have some advice for me? I have most of the data on that disk elsewhere, but I've put a lot of hours into sorting and merging it to this disk, so I would prefer to getting this disk up and running again, without formatting it anew. I don't think that the hardware is damaged since the disk is only a few months and since I can't see any I/O errors in the dmesg output. UPDATE: I just looked at the strace output again (2012-11-06_2300), now it looks like this: lseek(4, 1419860611072, SEEK_SET) = 1419860611072 read(4, "3#\f\2447\335\0\22A\355\374\276j\204'\207|\217V|\23\245[\7VP\251\242\276\207\317:"..., 4096) = 4096 lseek(4, 43018145792, SEEK_SET) = 43018145792 write(4, "]\206\231\342Y\204-2I\362\242\344\6R\205\361\324\177\265\317C\334V\324\260\334\275t=\10F."..., 4096) = 4096 lseek(4, 1419860615168, SEEK_SET) = 1419860615168 read(4, "\262\305\314Y\367\37x\326\245\226\226\320N\333$s\34\204\311\222\7\315\236\336\300TK\337\264\236\211n"..., 4096) = 4096 lseek(4, 43018149888, SEEK_SET) = 43018149888 write(4, "\271\224m\311\224\25!I\376\16;\377\0\223H\25Yd\201Y\342\r\203\271\24eG<\202{\373V"..., 4096) = 4096 lseek(4, 1419860619264, SEEK_SET) = 1419860619264 read(4, ";d\360\177\n\346\253\210\222|\250\352T\335M\33\260\320\261\7g\222P\344H?t\240\20\2548\310"..., 4096) = 4096 lseek(4, 43018153984, SEEK_SET) = 43018153984 write(4, "\360\252j\317\310\251G\227\335{\214`\341\267\31Y\202\360\v\374\307oq\3063\217Z\223\313\36D\211"..., 4096) = 4096 So this number of the lseeks before the reads, like 1419860619264 are already a lot bigger, standing for 1.29 terabytes if the numbers are bytes, so it doesn't seem to be a linear progress on a big scale, maybe there are only some areas that need work, that have big gaps in between them. (times are in CET)

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I can connect to Samba server but cannot access shares.

- by jlego

I'm having trouble getting samba sharing working to access shares. I have setup a stand-alone box running Fedora 16 to use as a file-sharing and web development server. It needs to be able to share files with a Windows 7 PC and a Mac running OSX Snow Leopard. I've setup Samba using the Samba configuration GUI tool on Fedora. Added users to Fedora and connected them as Samba users (which are the same as the Windows and Mac usernames and passwords). The workgroup name is the same as the Windows workgroup. Authentication is set to User. I've allowed Samba and Samba client through the firewall and set the ethernet to a trusted port in the firewall. Both the Windows and Mac machines can connect to the server and view the shares, however when trying to access the shares, Windows throws error: 0x80070035 " Windows cannot access \\SERVERNAME\ShareName." Windows user is not prompted for a username or password when accessing the server (found under "Network Places"). This also happens when connecting with the IP rather than the server name. The Mac can also connect to the server and see the shares but when choosing a share gives the error: The original item for ShareName cannot be found. When connecting via IP, the Mac user is prompted for username and password, which when authenticated gives a list of shares, however when choosing a share to connect to, the error is displayed and the user cannot access the share. Since both machines are acting similarly when trying to access the shares, I assume it is an issue with how Samba is configured. smb.conf: [global] workgroup = workgroup server string = Server log file = /var/log/samba/log.%m max log size = 50 security = user load printers = yes cups options = raw printcap name = lpstat printing = cups [homes] comment = Home Directories browseable = no writable = yes [printers] comment = All Printers path = /var/spool/samba browseable = yes printable = yes [FileServ] comment = FileShare path = /media/FileServ read only = no browseable = yes valid users = user1, user2 [webdev] comment = Web development path = /var/www/html/webdev read only = no browseable = yes valid users = user1 How do I get samba sharing working? UPDATE: I Figured it out, it was because I was sharing a second hard drive. See checked answer below. Speculation 1: Before this box I had another box with the same version of fedora installed (16) and samba working for these same computers. I started up the old machine and copied the smb.conf file from the old machine to the new one (editing the share definitions for the new shares of course) and I still get the same errors on both client machines. The only difference in environment is the hardware and the router. On the old machine the router received a dynamic public IP and assigned dynamic private IPs to each device on the network while the new machine is connected to a router that has a static public IP (still dynamic internal IPs though.) Could either one of these be affecting Samba? Speculation 2: As the directory I am trying to share is actually an entire internal disk, I have tried these things: 1.) changing the owner of the mounted disk from root to my user (which is the same username as on the Windows machine) 2.) made a share that only included one of the folders on the disk instead of the entire disk with my user again as the owner. Both tests failed giving me the same errors regarding the network address. Speculation 3: Whenever I try to connect to the share on the Windows 7 client I am prompted for my username and password. When I enter the correct credentials I get an access denied message. However I did notice that under the login box "domain: WINDOWS-PC-NAME" is listed. I believe this could very well be the problem. Speculation 4: So I've completely reinstalled Fedora and Samba now. I've created a share on the first harddrive (one fedora is installed on) and I can access that fine from Windows. However when I try to share any data on the second disk, I am receiving the same error. This I believe is the problem. I think I need to change some things in fstab or fdisk or something. Speculation 5: So in fstab I mapped the drive to automount in a folder which works correctly. I also added the samba_share_t SElinux label to the mountpoint directory which now allows me to access the shares on the Windows machine, however I cannot see any of the files in the directory on the windows machine. (They are there, I can see them in the fedora file browser locally)

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EXC_BAD_ACCESS and KERN_INVALID_ADDRESS after intiating a print sequence.

- by Edward M. Bergmann

MAC G4/1.5GHz/2GB/1TB+ OS10.4.11 Start up Volume has been erased/complete reinstall with updated software. Current problem only occurs when printing to an Epson Artisan 800 [USB as well as Ethernet connected] when using Macromedia FreeHand 10.0.1.67. All other apps/printers work fine. Memory has been removed/swapped/reinstalled several times, CPU was changed from 1.5GB to 1.3GB. Page(s) will print, but application quits within a second or two after selecting "print." Apple has never replied, Epson hasn't a clue, and I am befuddled!! Perhaps there is GURU out their who and see a bigger-better picture and understands how to interpret all of this stuff. If so, it would be a terrific pleasure to get a handle on how to cure this problem or get some A M M U N I T I O N to fire in the right direction. I thank you in advance. FreeHand 10 MAC OS10.4.11 unexpectedly quits after invoking a print command, the result: Date/Time: 2010-04-20 14:23:18.371 -0700 OS Version: 10.4.11 (Build 8S165) Report Version: 4 Command: FreeHand 10 Path: /Applications/Macromedia FreeHand 10.0.1.67/FreeHand 10 Parent: WindowServer [1060] Version: 10.0.1.67 (10.0.1.67, Copyright © 1988-2002 Macromedia Inc. and its licensors. All rights reserved.) PID: 1217 Thread: 0 Exception: EXC_BAD_ACCESS (0x0001) Codes: KERN_INVALID_ADDRESS (0x0001) at 0x07d7e000 Thread 0 Crashed: 0 <<00000000>> 0xffff8a60 __memcpy + 704 (cpu_capabilities.h:189) 1 FreeHand X 0x011d2994 0x1008000 + 1878420 2 FreeHand X 0x01081da4 0x1008000 + 499108 3 FreeHand X 0x010f5474 0x1008000 + 971892 4 FreeHand X 0x010d0278 0x1008000 + 819832 5 FreeHand X 0x010fa808 0x1008000 + 993288 6 FreeHand X 0x01113608 0x1008000 + 1095176 7 FreeHand X 0x01113748 0x1008000 + 1095496 8 FreeHand X 0x01099ebc 0x1008000 + 597692 9 FreeHand X 0x010fa358 0x1008000 + 992088 10 FreeHand X 0x010fa170 0x1008000 + 991600 11 FreeHand X 0x010f9830 0x1008000 + 989232 12 FreeHand X 0x01098678 0x1008000 + 591480 13 FreeHand X 0x010f7a5c 0x1008000 + 981596 Thread 1: 0 libSystem.B.dylib 0x90005dec syscall + 12 1 com.apple.OpenTransport 0x9ad015a0 BSD_waitevent + 44 2 com.apple.OpenTransport 0x9ad06360 CarbonSelectThreadFunc + 176 3 libSystem.B.dylib 0x9002b908 _pthread_body + 96 Thread 2: 0 libSystem.B.dylib 0x9002bfc8 semaphore_wait_signal_trap + 8 1 libSystem.B.dylib 0x90030aac pthread_cond_wait + 480 2 com.apple.OpenTransport 0x9ad01e94 CarbonOperationThreadFunc + 80 3 libSystem.B.dylib 0x9002b908 _pthread_body + 96 Thread 3: 0 libSystem.B.dylib 0x9002bfc8 semaphore_wait_signal_trap + 8 1 libSystem.B.dylib 0x90030aac pthread_cond_wait + 480 2 com.apple.OpenTransport 0x9ad11df0 CarbonInetOperThreadFunc + 80 3 libSystem.B.dylib 0x9002b908 _pthread_body + 96 Thread 4: 0 libSystem.B.dylib 0x90053f88 semaphore_timedwait_signal_trap + 8 1 libSystem.B.dylib 0x900707e8 pthread_cond_timedwait_relative_np + 556 2 ...ple.CoreServices.CarbonCore 0x90bf9330 TSWaitOnSemaphoreCommon + 176 3 ...ple.CoreServices.CarbonCore 0x90c012d0 TimerThread + 60 4 libSystem.B.dylib 0x9002b908 _pthread_body + 96 Thread 5: 0 libSystem.B.dylib 0x9001f48c select + 12 1 com.apple.CoreFoundation 0x907f1240 __CFSocketManager + 472 2 libSystem.B.dylib 0x9002b908 _pthread_body + 96 Thread 6: 0 libSystem.B.dylib 0x9002188c access + 12 1 ...e.print.framework.PrintCore 0x9169a620 CreateProxyURL(__CFURL const*) + 192 2 ...e.print.framework.PrintCore 0x9169a4f8 CreateOriginalPrinterProxyURL() + 80 3 ...e.print.framework.PrintCore 0x9169a034 CheckPrinterProxyVersion(OpaquePMPrinter*, __CFURL const*) + 192 4 ...e.print.framework.PrintCore 0x91699d94 PJCPrinterProxyCreateURL + 932 5 ...e.print.framework.PrintCore 0x916997bc PJCLaunchPrinterProxy(OpaquePMPrinter*, PMLaunchPCReason) + 32 6 ...e.print.framework.PrintCore 0x91699730 PJCLaunchPrinterProxyThread(void*) + 136 7 libSystem.B.dylib 0x9002b908 _pthread_body + 96 Thread 0 crashed with PPC Thread State 64: srr0: 0x00000000ffff8a60 srr1: 0x000000000200f030 vrsave: 0x00000000ff000000 cr: 0x24002244 xer: 0x0000000020000002 lr: 0x00000000011d2994 ctr: 0x00000000000003f6 r0: 0x0000000000000000 r1: 0x00000000bfffea60 r2: 0x0000000000000000 r3: 0x00000000083bb000 r4: 0x00000000083c0040 r5: 0x0000000000014d84 r6: 0x0000000000000010 r7: 0x0000000000000020 r8: 0x0000000000000030 r9: 0x0000000000000000 r10: 0x0000000000000060 r11: 0x0000000000000080 r12: 0x0000000007d7e000 r13: 0x0000000000000000 r14: 0x00000000005cbd26 r15: 0x0000000000000001 r16: 0x00000000017b03a0 r17: 0x0000000000000000 r18: 0x000000000068fa80 r19: 0x0000000000000001 r20: 0x0000000006c639c4 r21: 0x00000000006900f8 r22: 0x0000000006e09480 r23: 0x0000000006e0a250 r24: 0x0000000000000002 r25: 0x0000000000000000 r26: 0x00000000bfffed2c r27: 0x0000000006e05ce0 r28: 0x0000000000014d84 r29: 0x0000000000000000 r30: 0x0000000000014d84 r31: 0x00000000083bb000 Binary Images Description: 0x1000 - 0x2fff LaunchCFMApp /System/Library/Frameworks/Carbon.framework/Versions/A/Support/LaunchCFMApp 0x27f000 - 0x2ce3c7 CarbonLibpwpc PEF binary: CarbonLibpwpc 0x2ce3d0 - 0x2e66bd Apple;Carbon;Multimedia PEF binary: Apple;Carbon;Multimedia 0x2e7c00 - 0x2e998b Apple;Carbon;Networking PEF binary: Apple;Carbon;Networking 0x31ab10 - 0x31abb3 CFMPriv_QuickTime PEF binary: CFMPriv_QuickTime 0x31ac20 - 0x31ac97 CFMPriv_System PEF binary: CFMPriv_System 0x31af30 - 0x31b000 CFMPriv_CarbonSound PEF binary: CFMPriv_CarbonSound 0x31b080 - 0x31b153 CFMPriv_CommonPanels PEF binary: CFMPriv_CommonPanels 0x31b230 - 0x31b2eb CFMPriv_Help PEF binary: CFMPriv_Help 0x31b2f0 - 0x31b3ba CFMPriv_HIToolbox PEF binary: CFMPriv_HIToolbox 0x31b440 - 0x31b516 CFMPriv_HTMLRendering PEF binary: CFMPriv_HTMLRendering 0x31b550 - 0x31b602 CFMPriv_CoreFoundation PEF binary: CFMPriv_CoreFoundation 0x31b7f0 - 0x31b8a5 CFMPriv_DVComponentGlue PEF binary: CFMPriv_DVComponentGlue 0x31f760 - 0x31f833 CFMPriv_ImageCapture PEF binary: CFMPriv_ImageCapture 0x31f8c0 - 0x31f9a5 CFMPriv_NavigationServices PEF binary: CFMPriv_NavigationServices 0x31fa20 - 0x31faf6 CFMPriv_OpenScripting?MacBLib PEF binary: CFMPriv_OpenScripting?MacBLib 0x31fbd0 - 0x31fc8e CFMPriv_Print PEF binary: CFMPriv_Print 0x31fcb0 - 0x31fd7d CFMPriv_SecurityHI PEF binary: CFMPriv_SecurityHI 0x31fe00 - 0x31fee2 CFMPriv_SpeechRecognition PEF binary: CFMPriv_SpeechRecognition 0x31ff60 - 0x320033 CFMPriv_CarbonCore PEF binary: CFMPriv_CarbonCore 0x3200b0 - 0x320183 CFMPriv_OSServices PEF binary: CFMPriv_OSServices 0x320260 - 0x320322 CFMPriv_AE PEF binary: CFMPriv_AE 0x320330 - 0x3203f5 CFMPriv_ATS PEF binary: CFMPriv_ATS 0x320470 - 0x320547 CFMPriv_ColorSync PEF binary: CFMPriv_ColorSync 0x3205d0 - 0x3206b3 CFMPriv_FindByContent PEF binary: CFMPriv_FindByContent 0x320730 - 0x32080a CFMPriv_HIServices PEF binary: CFMPriv_HIServices 0x320880 - 0x320960 CFMPriv_LangAnalysis PEF binary: CFMPriv_LangAnalysis 0x3209f0 - 0x320ad6 CFMPriv_LaunchServices PEF binary: CFMPriv_LaunchServices 0x320bb0 - 0x320c87 CFMPriv_PrintCore PEF binary: CFMPriv_PrintCore 0x320c90 - 0x320d52 CFMPriv_QD PEF binary: CFMPriv_QD 0x320e50 - 0x320f39 CFMPriv_SpeechSynthesis PEF binary: CFMPriv_SpeechSynthesis 0x405000 - 0x497f7a PowerPlant Shared Library PEF binary: PowerPlant Shared Library 0x498000 - 0x4f0012 Player PEF binary: Player 0x4f1000 - 0x54a4c0 KodakCMSC PEF binary: KodakCMSC 0x6bd000 - 0x6eca10 <Unknown disk fragment> PEF binary: <Unknown disk fragment> 0x7fc000 - 0x7fdb8b xRes Palette Importc PEF binary: xRes Palette Importc 0x1008000 - 0x17770a5 FreeHand X PEF binary: FreeHand X 0x17770b0 - 0x17a6fe7 MW_MSL.Carbon.Shlb PEF binary: MW_MSL.Carbon.Shlb 0x17fb000 - 0x17fff03 Smudge PEF binary: Smudge 0x5ce6000 - 0x5cecebe PICT Import Export68 PEF binary: PICT Import Export68 0x5ced000 - 0x5d24267 PNG Import Exportr68 PEF binary: PNG Import Exportr68 0x5d25000 - 0x5d30dde Release To Layerswpc PEF binary: Release To Layerswpc 0x5d31000 - 0x5d37fd2 Roughen PEF binary: Roughen 0x5d38000 - 0x5d459ae Shadow PEF binary: Shadow 0x5d46000 - 0x5d4b0de Spiral PEF binary: Spiral 0x5d4c000 - 0x5d57f07 Targa Import Export8 PEF binary: Targa Import Export8 0x5d58000 - 0x5d8d959 TIFF Import Export68 PEF binary: TIFF Import Export68 0x5d93000 - 0x5da0f65 Color Utilities PEF binary: Color Utilities 0x5f62000 - 0x5f6e795 Mirror PEF binary: Mirror 0x5f6f000 - 0x5fbd656 HTML Export PEF binary: HTML Export 0x5fc8000 - 0x5fd442f Graphic Hose PEF binary: Graphic Hose 0x5fd5000 - 0x5fe4b5a BMP Import Exportr68 PEF binary: BMP Import Exportr68 0x5fe5000 - 0x60342d6 PDF Export PEF binary: PDF Export 0x6041000 - 0x6042f44 Fractalizej@ PEF binary: Fractalizej@ 0x6043000 - 0x6075214 Chart Tool™ PEF binary: Chart Tool™ 0x6076000 - 0x607d46d Bend PEF binary: Bend 0x607e000 - 0x60cda7b PDF Import PEF binary: PDF Import 0x60dc000 - 0x60e38f2 Photoshop ImportChartCursor PEF binary: Photoshop ImportChartCursor 0x60e4000 - 0x60eb9b1 3D Rotationp PEF binary: 3D Rotationp 0x60ec000 - 0x611b458 JPEG Import ExportANEL PEF binary: JPEG Import ExportANEL 0x611c000 - 0x613d89f GIF Import Export PEF binary: GIF Import Export 0x613e000 - 0x616d7f7 Flash Export PEF binary: Flash Export 0x616e000 - 0x6175d75 Fisheye Lens PEF binary: Fisheye Lens 0x6176000 - 0x6182343 IPTC File Info PEF binary: IPTC File Info 0x6184000 - 0x6193790 PEF binary: 0x6194000 - 0x61965e5 Photoshop Palette Import PEF binary: Photoshop Palette Import 0x6197000 - 0x619c5a4 Add PointsZ PEF binary: Add PointsZ 0x619d000 - 0x61ad92b Emboss PEF binary: Emboss 0x61ae000 - 0x61be6e1 AppleScript™ Xtrawpc PEF binary: AppleScript™ Xtrawpc 0x61bf000 - 0x61d16de Navigation PEF binary: Navigation 0x61d2000 - 0x61ff94e CorelDRAW 7-8 Import PEF binary: CorelDRAW 7-8 Import 0x620a000 - 0x620d7f1 Trap PEF binary: Trap 0x620e000 - 0x62149d4 Import RGB Color Table PEF binary: Import RGB Color Table 0x6215000 - 0x6217dfe Arc PEF binary: Arc 0x6218000 - 0x62211e3 Delete Empty Text Blocks PEF binary: Delete Empty Text Blocks 0x6222000 - 0x624c8da MIX Services PEF binary: MIX Services 0x7d0b000 - 0x7d37fff com.apple.print.framework.Print.Private 4.6 (163.10) /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/Print.framework/Versions/Current/Plugins/PrintCocoaUI.bundle/Contents/MacOS/PrintCocoaUI 0x7dbf000 - 0x7ddffff com.apple.print.PrintingCocoaPDEs 4.6 (163.10) /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/Print.framework/Versions/A/Plugins/PrintingCocoaPDEs.bundle/Contents/MacOS/PrintingCocoaPDEs 0x7f05000 - 0x7f39fff com.epson.ijprinter.pde.PrintSetting.EP0827MSA 6.36 /Library/Printers/EPSON/InkjetPrinter/PrintingModule/EP0827MSA_Core.plugin/Contents/PDEs/PrintSetting.plugin/Contents/MacOS/PrintSetting 0x7f49000 - 0x8044fff com.epson.ijprinter.IJPFoundation 6.54 /Library/Printers/EPSON/InkjetPrinter/Libraries/IJPFoundation.framework/Versions/A/IJPFoundation 0x809a000 - 0x80cdfff com.epson.ijprinter.pde.ColorManagement.EP0827MSA 6.36 /Library/Printers/EPSON/InkjetPrinter/PrintingModule/EP0827MSA_Core.plugin/Contents/PDEs/ColorManagement.plugin/Contents/MacOS/ColorManagement 0x80dd000 - 0x8110fff com.epson.ijprinter.pde.ExpandMargin.EP0827MSA 6.36 /Library/Printers/EPSON/InkjetPrinter/PrintingModule/EP0827MSA_Core.plugin/Contents/PDEs/ExpandMargin.plugin/Contents/MacOS/ExpandMargin 0x8120000 - 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0x942b9fff com.apple.audio.toolbox.AudioToolbox 1.4.7 /System/Library/Frameworks/AudioToolbox.framework/Versions/A/AudioToolbox 0x9430c000 - 0x9430cfff com.apple.audio.units.AudioUnit 1.4 /System/Library/Frameworks/AudioUnit.framework/Versions/A/AudioUnit 0x9430e000 - 0x944cefff com.apple.QuartzCore 1.4.12 /System/Library/Frameworks/QuartzCore.framework/Versions/A/QuartzCore 0x94518000 - 0x94555fff libsqlite3.0.dylib /usr/lib/libsqlite3.0.dylib 0x9455d000 - 0x945adfff libGLImage.dylib /System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libGLImage.dylib 0x945b6000 - 0x945cffff com.apple.CoreVideo 1.4.2 /System/Library/Frameworks/CoreVideo.framework/Versions/A/CoreVideo 0x9477d000 - 0x9478cfff libCGATS.A.dylib /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/CoreGraphics.framework/Versions/A/Resources/libCGATS.A.dylib 0x94794000 - 0x947a1fff libCSync.A.dylib /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/CoreGraphics.framework/Versions/A/Resources/libCSync.A.dylib 0x947a7000 - 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0x9505afff libssl.0.9.7.dylib /usr/lib/libssl.0.9.7.dylib 0x9506a000 - 0x95087fff libresolv.9.dylib /usr/lib/libresolv.9.dylib 0x9acff000 - 0x9ad1dfff com.apple.OpenTransport 2.0 /System/Library/PrivateFrameworks/OpenTransport.framework/OpenTransport 0x9ad98000 - 0x9ad99fff com.apple.iokit.dvcomponentglue 1.7.9 /System/Library/Frameworks/DVComponentGlue.framework/Versions/A/DVComponentGlue 0x9b1db000 - 0x9b1f2fff libCFilter.A.dylib /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/CoreGraphics.framework/Versions/A/Resources/libCFilter.A.dylib 0x9c69b000 - 0x9c6bdfff libmx.A.dylib /usr/lib/libmx.A.dylib 0xeab00000 - 0xeab25fff libConverter.dylib /System/Library/Printers/Libraries/libConverter.dylib Model: PowerMac3,1, BootROM 4.2.8f1, 1 processors, PowerPC G4 (3.3), 1.3 GHz, 2 GB Graphics: ATI Radeon 7500, ATY,RV200, AGP, 32 MB Memory Module: DIMM0/J21, 512 MB, SDRAM, PC133-333 Memory Module: DIMM1/J22, 512 MB, SDRAM, PC133-333 Memory Module: DIMM2/J23, 512 MB, SDRAM, PC133-333 Memory Module: DIMM3/J24, 512 MB, SDRAM, PC133-333 Modem: Spring, UCJ, V.90, 3.0F, APPLE VERSION 0001, 4/7/1999 Network Service: Built-in Ethernet, Ethernet, en0 PCI Card: SeriTek/1V2E2 v.5.1.3,11/22/05, 23:47:18, ata, SLOT-B PCI Card: pci-bridge, pci, SLOT-C PCI Card: firewire, ieee1394, 2x8 PCI Card: usb, usb, 2x9 PCI Card: usb, usb, 2x9 PCI Card: pcie55,2928, 2x9 PCI Card: ATTO,ExpressPCIPro, scsi, SLOT-D Parallel ATA Device: MATSHITADVD-ROM SR-8585 Parallel ATA Device: IOMEGA ZIP 100 ATAPI USB Device: Hub, Up to 12 Mb/sec, 500 mA USB Device: Hub, Up to 12 Mb/sec, 500 mA USB Device: USB2.0 Hub, Up to 12 Mb/sec, 500 mA USB Device: iMic USB audio system, Griffin Technology, Inc, Up to 12 Mb/sec, 500 mA USB Device: USB Storage Device, Generic, Up to 12 Mb/sec, 500 mA USB Device: USB2.0 MFP, EPSON, Up to 12 Mb/sec, 500 mA USB Device: DYMO LabelWriter Twin Turbo, DYMO, Up to 12 Mb/sec, 500 mA USB Device: USB 2.0 CD + HDD, DMI, Up to 12 Mb/sec, 500 mA USB Device: USB2.0 Hub, Up to 12 Mb/sec, 500 mA USB Device: USB2.0 Hub, Up to 12 Mb/sec, 500 mA USB Device: iMate, USB To ADB Adaptor, Griffin Technology, Inc., Up to 1.5 Mb/sec, 500 mA USB Device: Hub in Apple Pro Keyboard, Alps Electric, Up to 12 Mb/sec, 500 mA USB Device: Griffin PowerMate, Griffin Technology, Inc., Up to 1.5 Mb/sec, 100 mA

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SlimDX: Lightning problem with Direct3D9

- by Spi1988

I am creating a simple application to get familiar with SlimDX library. I found some code written in MDX and I'm trying to convert it to run on SlimDX. I am having some problems with the light because everything is being shown as black. The code is: public partial class DirectTest : Form { private Device device= null; private float angle = 0.0f; Light light = new Light(); public DirectTest() { InitializeComponent(); this.Size = new Size(800, 600); this.SetStyle(ControlStyles.AllPaintingInWmPaint | ControlStyles.Opaque, true); } /// <summary> /// We will initialize our graphics device here /// </summary> public void InitializeGraphics() { PresentParameters pres_params = new PresentParameters() { Windowed = true, SwapEffect = SwapEffect.Discard }; device = new Device(new Direct3D(), 0, DeviceType.Hardware, this.Handle, CreateFlags.SoftwareVertexProcessing, pres_params); } private void SetupCamera() { device.SetRenderState(RenderState.CullMode, Cull.None); device.SetTransform(TransformState.World, Matrix.RotationAxis(new Vector3(angle / ((float)Math.PI * 2.0f), angle / ((float)Math.PI * 4.0f), angle / ((float)Math.PI * 6.0f)), angle / (float)Math.PI)); angle += 0.1f; device.SetTransform(TransformState.Projection, Matrix.PerspectiveFovLH((float)Math.PI / 4, this.Width / this.Height, 1.0f, 100.0f)); device.SetTransform(TransformState.View, Matrix.LookAtLH(new Vector3(0, 0, 5.0f), new Vector3(), new Vector3(0, 1, 0))); device.SetRenderState(RenderState.Lighting, false); } protected override void OnPaint(System.Windows.Forms.PaintEventArgs e) { device.Clear(ClearFlags.Target | ClearFlags.ZBuffer, Color.CornflowerBlue, 1.0f, 0); SetupCamera(); CustomVertex.PositionColored[] verts = new CustomVertex.PositionColored[3]; verts[0].Position = new Vector3(0.0f, 1.0f, 1.0f); verts[0].Normal = new Vector3(0.0f, 0.0f, -1.0f); verts[0].Color = System.Drawing.Color.White.ToArgb(); verts[1].Position = new Vector3(-1.0f, -1.0f, 1.0f); verts[1].Normal = new Vector3(0.0f, 0.0f, -1.0f); verts[1].Color = System.Drawing.Color.White.ToArgb(); verts[2].Position = new Vector3(1.0f, -1.0f, 1.0f); verts[2].Normal = new Vector3(0.0f, 0.0f, -1.0f); verts[2].Color = System.Drawing.Color.White.ToArgb(); light.Type = LightType.Point; light.Position = new Vector3(); light.Diffuse = System.Drawing.Color.White; light.Attenuation0 = 0.2f; light.Range = 10000.0f; device.SetLight(0, light); device.EnableLight(0, true); device.BeginScene(); device.VertexFormat = CustomVertex.PositionColored.format; device.DrawUserPrimitives<CustomVertex.PositionColored>(PrimitiveType.TriangleList, 1, verts); device.EndScene(); device.Present(); this.Invalidate(); } } } The Vertex Format that I am using is the following [StructLayout(LayoutKind.Sequential)] public struct PositionNormalColored { public Vector3 Position; public int Color; public Vector3 Normal; public static readonly VertexFormat format = VertexFormat.Diffuse | VertexFormat.Position | VertexFormat.Normal; } Any suggestions on what the problem might be? Thanks in Advance

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android Emulator always stop at "waiting for Home..."

- by wuwupp

hi,there, I freshed install Eclipse, jdk, android sdk 1.5 in winxp. but when I run the "hello world" app, the emulator always stop at "andorid" loading message. In eclipse console, it shows "waiting for HOME..." and in DDMS LogCat, it shows following msg: there are some error and warning. So, what's wrong with my case? I have googled lots of results, but no one can help me. Please help me. Many thx 06-13 00:07:54.323: INFO/DEBUG(551): debuggerd: Jun 30 2009 17:00:51 06-13 00:07:54.383: INFO/vold(550): Android Volume Daemon version 2.0 06-13 00:07:54.724: ERROR/flash_image(556): can't find recovery partition 06-13 00:07:55.223: DEBUG/qemud(558): entering main loop 06-13 00:07:55.323: DEBUG/qemud(558): multiplexer_handle_control: unknown control message (18 bytes): 'ko:unknown command' 06-13 00:07:55.493: INFO/vold(550): New MMC card 'SU02G' (serial 1012966) added @ /devices/platform/goldfish_mmc.0/mmc_host/mmc0/mmc0:e118 06-13 00:07:55.773: INFO/vold(550): Disk (blkdev 179:0), 262144 secs (128 MB) 0 partitions 06-13 00:07:55.773: INFO/vold(550): New blkdev 179.0 on media SU02G, media path /devices/platform/goldfish_mmc.0/mmc_host/mmc0/mmc0:e118, Dpp 0 06-13 00:07:55.814: INFO/vold(550): Evaluating dev '/devices/platform/goldfish_mmc.0/mmc_host/mmc0/mmc0:e118/block/mmcblk0' for mountable filesystems for '/sdcard' 06-13 00:07:56.014: ERROR/vold(550): Error opening switch name path '/sys/class/switch/test2' (No such file or directory) 06-13 00:07:56.014: ERROR/vold(550): Error bootstrapping switch '/sys/class/switch/test2' (m) 06-13 00:07:56.073: ERROR/vold(550): Error opening switch name path '/sys/class/switch/test' (No such file or directory) 06-13 00:07:56.073: ERROR/vold(550): Error bootstrapping switch '/sys/class/switch/test' (m) 06-13 00:07:56.073: DEBUG/vold(550): Bootstrapping complete 06-13 00:07:56.743: INFO//system/bin/dosfsck(550): dosfsck 3.0.1 (23 Nov 2008) 06-13 00:07:56.753: INFO//system/bin/dosfsck(550): dosfsck 3.0.1, 23 Nov 2008, FAT32, LFN 06-13 00:07:56.783: INFO//system/bin/dosfsck(550): Checking we can access the last sector of the filesystem 06-13 00:07:56.893: INFO//system/bin/dosfsck(550): Boot sector contents: 06-13 00:07:56.924: INFO//system/bin/dosfsck(550): System ID "MSWIN4.1" 06-13 00:07:56.934: INFO//system/bin/dosfsck(550): Media byte 0xf8 (hard disk) 06-13 00:07:56.953: INFO//system/bin/dosfsck(550): 512 bytes per logical sector 06-13 00:07:56.974: INFO//system/bin/dosfsck(550): 512 bytes per cluster 06-13 00:07:57.005: INFO//system/bin/dosfsck(550): 32 reserved sectors 06-13 00:07:57.013: INFO//system/bin/dosfsck(550): First FAT starts at byte 16384 (sector 32) 06-13 00:07:57.013: INFO//system/bin/dosfsck(550): 2 FATs, 32 bit entries 06-13 00:07:57.023: INFO//system/bin/dosfsck(550): 1040384 bytes per FAT (= 2032 sectors) 06-13 00:07:57.043: INFO//system/bin/dosfsck(550): Root directory start at cluster 2 (arbitrary size) 06-13 00:07:57.043: INFO//system/bin/dosfsck(550): Data area starts at byte 2097152 (sector 4096) 06-13 00:07:57.043: INFO//system/bin/dosfsck(550): 258048 data clusters (132120576 bytes) 06-13 00:07:57.103: INFO//system/bin/dosfsck(550): 9 sectors/track, 2 heads 06-13 00:07:57.103: INFO//system/bin/dosfsck(550): 0 hidden sectors 06-13 00:07:57.123: INFO//system/bin/dosfsck(550): 262144 sectors total 06-13 00:07:57.313: DEBUG/qemud(558): fdhandler_accept_event: accepting on fd 10 06-13 00:07:57.313: DEBUG/qemud(558): created client 0xe078 listening on fd 8 06-13 00:07:57.313: DEBUG/qemud(558): fdhandler_event: disconnect on fd 8 06-13 00:07:57.623: DEBUG/qemud(558): fdhandler_accept_event: accepting on fd 10 06-13 00:07:57.623: DEBUG/qemud(558): created client 0xf028 listening on fd 8 06-13 00:07:57.643: DEBUG/qemud(558): client_fd_receive: attempting registration for service 'gsm' 06-13 00:07:57.763: DEBUG/qemud(558): client_fd_receive: - received channel id 1 06-13 00:08:12.553: INFO//system/bin/dosfsck(550): Checking for unused clusters. 06-13 00:08:13.483: INFO//system/bin/dosfsck(550): Checking free cluster summary. 06-13 00:08:13.643: DEBUG/AndroidRuntime(553): AndroidRuntime START <<<<<<<<<<<<<< 06-13 00:08:13.705: DEBUG/AndroidRuntime(553): CheckJNI is ON 06-13 00:08:13.793: INFO//system/bin/dosfsck(550): /dev/block//vold/179:0: 0 files, 1/258048 clusters 06-13 00:08:14.063: INFO/logwrapper(550): /system/bin/dosfsck terminated by exit(0) 06-13 00:08:14.143: DEBUG/vold(550): Filesystem check completed OK 06-13 00:08:14.683: INFO/vold(550): Sucessfully mounted vfat filesystem 179:0 on /sdcard (safe-mode on) 06-13 00:08:17.023: INFO/(554): ServiceManager: 0xac38 06-13 00:08:17.883: INFO/AudioFlinger(554): AudioFlinger's thread ready to run for output 0 06-13 00:08:18.163: INFO/CameraService(554): CameraService started: pid=554 06-13 00:08:21.824: DEBUG/AndroidRuntime(553): --- registering native functions --- 06-13 00:08:27.813: INFO/Zygote(553): Preloading classes... 06-13 00:08:27.994: DEBUG/dalvikvm(553): GC freed 764 objects / 42216 bytes in 88ms 06-13 00:08:30.234: DEBUG/dalvikvm(553): GC freed 278 objects / 17160 bytes in 48ms 06-13 00:08:33.094: DEBUG/dalvikvm(553): GC freed 208 objects / 12696 bytes in 44ms 06-13 00:08:34.343: DEBUG/dalvikvm(553): Trying to load lib /system/lib/libmedia_jni.so 0x0 06-13 00:08:35.803: DEBUG/dalvikvm(553): Added shared lib /system/lib/libmedia_jni.so 0x0 06-13 00:08:35.903: DEBUG/dalvikvm(553): Trying to load lib /system/lib/libmedia_jni.so 0x0 06-13 00:08:35.903: DEBUG/dalvikvm(553): Shared lib '/system/lib/libmedia_jni.so' already loaded in same CL 0x0 06-13 00:08:36.003: DEBUG/dalvikvm(553): Trying to load lib /system/lib/libmedia_jni.so 0x0 06-13 00:08:36.003: DEBUG/dalvikvm(553): Shared lib '/system/lib/libmedia_jni.so' already loaded in same CL 0x0 06-13 00:08:36.215: DEBUG/dalvikvm(553): Trying to load lib /system/lib/libmedia_jni.so 0x0 06-13 00:08:36.244: DEBUG/dalvikvm(553): Shared lib '/system/lib/libmedia_jni.so' already loaded in same CL 0x0 06-13 00:08:36.455: DEBUG/dalvikvm(553): GC freed 462 objects / 29144 bytes in 70ms 06-13 00:08:44.123: DEBUG/dalvikvm(553): GC freed 3584 objects / 171648 bytes in 125ms 06-13 00:09:10.473: DEBUG/dalvikvm(553): GC freed 11329 objects / 400856 bytes in 196ms 06-13 00:09:17.373: DEBUG/dalvikvm(553): GC freed 10472 objects / 438272 bytes in 199ms 06-13 00:09:24.563: DEBUG/dalvikvm(553): GC freed 10975 objects / 459800 bytes in 202ms 06-13 00:09:46.403: DEBUG/dalvikvm(553): GC freed 14372 objects / 506896 bytes in 252ms 06-13 00:09:53.793: DEBUG/dalvikvm(553): GC freed 11314 objects / 481360 bytes in 215ms 06-13 00:09:57.743: DEBUG/dalvikvm(553): GC freed 5928 objects / 248640 bytes in 195ms 06-13 00:10:01.324: DEBUG/dalvikvm(553): GC freed 349 objects / 37032 bytes in 190ms 06-13 00:10:05.253: DEBUG/dalvikvm(553): GC freed 778 objects / 48376 bytes in 217ms 06-13 00:10:06.564: DEBUG/dalvikvm(553): GC freed 321 objects / 37288 bytes in 219ms 06-13 00:10:08.194: DEBUG/dalvikvm(553): GC freed 477 objects / 29584 bytes in 212ms 06-13 00:10:08.663: DEBUG/dalvikvm(553): Trying to load lib /system/lib/libwebcore.so 0x0 06-13 00:10:09.743: DEBUG/dalvikvm(553): Added shared lib /system/lib/libwebcore.so 0x0 06-13 00:10:11.634: DEBUG/dalvikvm(553): GC freed 441 objects / 26224 bytes in 236ms 06-13 00:10:12.893: DEBUG/dalvikvm(553): GC freed 506 objects / 41464 bytes in 235ms 06-13 00:10:14.153: DEBUG/dalvikvm(553): GC freed 537 objects / 38832 bytes in 239ms 06-13 00:10:15.883: DEBUG/dalvikvm(553): GC freed 342 objects / 22552 bytes in 248ms 06-13 00:10:17.124: DEBUG/dalvikvm(553): GC freed 338 objects / 18736 bytes in 264ms 06-13 00:10:18.523: DEBUG/dalvikvm(553): GC freed 629 objects / 32136 bytes in 260ms 06-13 00:10:38.933: DEBUG/dalvikvm(553): GC freed 14257 objects / 497280 bytes in 368ms 06-13 00:10:46.453: DEBUG/dalvikvm(553): GC freed 11164 objects / 469576 bytes in 360ms 06-13 00:10:52.973: DEBUG/dalvikvm(553): GC freed 7134 objects / 311432 bytes in 339ms 06-13 00:10:55.595: DEBUG/dalvikvm(553): GC freed 752 objects / 43224 bytes in 520ms 06-13 00:10:56.863: DEBUG/dalvikvm(553): GC freed 598 objects / 31496 bytes in 307ms 06-13 00:10:58.543: DEBUG/dalvikvm(553): GC freed 413 objects / 26336 bytes in 355ms 06-13 00:10:59.263: INFO/Zygote(553): ...preloaded 1166 classes in 151403ms. 06-13 00:10:59.683: DEBUG/dalvikvm(553): GC freed 313 objects / 19952 bytes in 343ms 06-13 00:10:59.793: INFO/Zygote(553): Preloading resources... 06-13 00:11:00.683: DEBUG/dalvikvm(553): GC freed 54 objects / 11248 bytes in 340ms 06-13 00:11:05.723: DEBUG/dalvikvm(553): GC freed 337 objects / 15008 bytes in 317ms 06-13 00:11:08.703: DEBUG/dalvikvm(553): GC freed 280 objects / 11768 bytes in 312ms 06-13 00:11:09.303: INFO/Zygote(553): ...preloaded 48 resources in 9513ms. 06-13 00:11:09.795: INFO/Zygote(553): ...preloaded 15 resources in 454ms. 06-13 00:11:10.303: DEBUG/dalvikvm(553): GC freed 118 objects / 8616 bytes in 420ms 06-13 00:11:10.913: DEBUG/dalvikvm(553): GC freed 205 objects / 8104 bytes in 308ms 06-13 00:11:11.344: DEBUG/dalvikvm(553): GC freed 36 objects / 1400 bytes in 320ms 06-13 00:11:11.543: INFO/dalvikvm(553): Splitting out new zygote heap 06-13 00:11:12.973: INFO/dalvikvm(553): System server process 585 has been created 06-13 00:11:13.336: INFO/Zygote(553): Accepting command socket connections 06-13 00:11:14.963: INFO/jdwp(585): received file descriptor 10 from ADB 06-13 00:11:16.843: WARN/System.err(585): Can't dispatch DDM chunk 46454154: no handler defined 06-13 00:11:16.953: WARN/System.err(585): Can't dispatch DDM chunk 4d505251: no handler defined 06-13 00:11:17.763: DEBUG/dalvikvm(585): Trying to load lib /system/lib/libandroid_servers.so 0x0 06-13 00:11:19.714: DEBUG/dalvikvm(585): Added shared lib /system/lib/libandroid_servers.so 0x0 06-13 00:11:20.123: INFO/sysproc(585): Entered system_init() 06-13 00:11:20.223: INFO/sysproc(585): ServiceManager: 0x1017b8 06-13 00:11:20.359: INFO/SurfaceFlinger(585): SurfaceFlinger is starting 06-13 00:11:20.493: INFO/SurfaceFlinger(585): SurfaceFlinger's main thread ready to run. Initializing graphics H/W... 06-13 00:11:20.634: ERROR/MemoryHeapBase(585): error opening /dev/pmem: No such file or directory 06-13 00:11:20.704: ERROR/SurfaceFlinger(585): Couldn't open /sys/power/wait_for_fb_sleep or /sys/power/wait_for_fb_wake 06-13 00:11:22.013: ERROR/GLLogger(585): couldn't load library (Cannot find library) 06-13 00:11:22.103: INFO/SurfaceFlinger(585): EGL informations: 06-13 00:11:22.113: INFO/SurfaceFlinger(585): # of configs : 6 06-13 00:11:22.123: INFO/SurfaceFlinger(585): vendor : Android 06-13 00:11:22.123: INFO/SurfaceFlinger(585): version : 1.31 Android META-EGL 06-13 00:11:22.134: INFO/SurfaceFlinger(585): extensions: 06-13 00:11:22.134: INFO/SurfaceFlinger(585): Client API: OpenGL ES 06-13 00:11:22.193: INFO/EGLDisplaySurface(585): using (fd=22) 06-13 00:11:22.193: INFO/EGLDisplaySurface(585): id = 06-13 00:11:22.193: INFO/EGLDisplaySurface(585): xres = 320 px 06-13 00:11:22.193: INFO/EGLDisplaySurface(585): yres = 480 px 06-13 00:11:22.193: INFO/EGLDisplaySurface(585): xres_virtual = 320 px 06-13 00:11:22.193: INFO/EGLDisplaySurface(585): yres_virtual = 960 px 06-13 00:11:22.193: INFO/EGLDisplaySurface(585): bpp = 16 06-13 00:11:22.193: INFO/EGLDisplaySurface(585): r = 11:5 06-13 00:11:22.193: INFO/EGLDisplaySurface(585): g = 5:6 06-13 00:11:22.193: INFO/EGLDisplaySurface(585): b = 0:5 06-13 00:11:22.193: INFO/EGLDisplaySurface(585): width = 49 mm (165.877548 dpi) 06-13 00:11:22.193: INFO/EGLDisplaySurface(585): height = 74 mm (164.756760 dpi) 06-13 00:11:22.193: INFO/EGLDisplaySurface(585): refresh rate = 60.00 Hz 06-13 00:11:22.533: WARN/HAL(585): load: module=/system/lib/hw/copybit.goldfish.so error=Cannot find library 06-13 00:11:22.543: WARN/HAL(585): load: module=/system/lib/hw/copybit.default.so error=Cannot find library 06-13 00:11:22.553: WARN/SurfaceFlinger(585): ro.sf.lcd_density not defined, using 160 dpi by default. 06-13 00:11:22.644: INFO/SurfaceFlinger(585): OpenGL informations: 06-13 00:11:22.654: INFO/SurfaceFlinger(585): vendor : Android 06-13 00:11:22.654: INFO/SurfaceFlinger(585): renderer : Android PixelFlinger 1.0 06-13 00:11:22.654: INFO/SurfaceFlinger(585): version : OpenGL ES-CM 1.0 06-13 00:11:22.654: INFO/SurfaceFlinger(585): extensions: GL_OES_byte_coordinates GL_OES_fixed_point GL_OES_single_precision GL_OES_read_format GL_OES_compressed_paletted_texture GL_OES_draw_texture GL_OES_matrix_get GL_OES_query_matrix GL_ARB_texture_compression GL_ARB_texture_non_power_of_two GL_ANDROID_direct_texture GL_ANDROID_user_clip_plane GL_ANDROID_vertex_buffer_object GL_ANDROID_generate_mipmap 06-13 00:11:22.673: WARN/HAL(585): load: module=/system/lib/hw/copybit.goldfish.so error=Cannot find library 06-13 00:11:22.683: WARN/HAL(585): load: module=/system/lib/hw/copybit.default.so error=Cannot find library 06-13 00:11:22.703: WARN/HAL(585): load: module=/system/lib/hw/overlay.goldfish.so error=Cannot find library 06-13 00:11:22.713: WARN/HAL(585): load: module=/system/lib/hw/overlay.default.so error=Cannot find library 06-13 00:11:23.663: INFO/sysproc(585): System server: starting Android runtime. 06-13 00:11:23.733: INFO/sysproc(585): System server: starting Android services. 06-13 00:11:23.953: INFO/SystemServer(585): Entered the Android system server! 06-13 00:11:24.303: INFO/sysproc(585): System server: entering thread pool. 06-13 00:11:24.763: ERROR/GLLogger(585): couldn't load library (Cannot find library) 06-13 00:11:25.893: INFO/ARMAssembler(585): generated scanline__00000077:03545404_00000A01_00000000 [ 30 ipp] (51 ins) at [0x18f708:0x18f7d4] in 72796961 ns 06-13 00:11:26.193: INFO/SystemServer(585): Starting Power Manager. 06-13 00:11:26.953: INFO/SystemServer(585): Starting Activity Manager. 06-13 00:11:31.733: INFO/SystemServer(585): Starting telephony registry 06-13 00:11:32.054: INFO/SystemServer(585): Starting Package Manager. 06-13 00:11:32.553: INFO/Installer(585): connecting... 06-13 00:11:32.914: INFO/installd(555): new connection 06-13 00:11:35.193: INFO/PackageManager(585): Got library android.awt in /system/framework/android.awt.jar 06-13 00:11:35.313: INFO/PackageManager(585): Got library android.test.runner in /system/framework/android.test.runner.jar 06-13 00:11:35.324: INFO/PackageManager(585): Got library com.android.im.plugin in /system/framework/com.android.im.plugin.jar 06-13 00:11:44.643: DEBUG/PackageManager(585): Scanning app dir /system/framework 06-13 00:11:49.513: DEBUG/PackageManager(585): Scanning app dir /system/app 06-13 00:11:51.493: DEBUG/dalvikvm(585): GC freed 6088 objects / 251280 bytes in 1237ms 06-13 00:12:27.497: DEBUG/dalvikvm(585): GC freed 3435 objects / 216088 bytes in 792ms 06-13 00:12:29.213: DEBUG/PackageManager(585): Scanning app dir /data/app 06-13 00:12:30.223: DEBUG/PackageManager(585): Scanning app dir /data/app-private 06-13 00:12:30.425: INFO/PackageManager(585): Time to scan packages: 47.319 seconds 06-13 00:12:30.703: WARN/PackageManager(585): Unknown permission com.google.android.googleapps.permission.GOOGLE_AUTH in package com.android.providers.contacts 06-13 00:12:30.803: WARN/PackageManager(585): Unknown permission com.google.android.googleapps.permission.GOOGLE_AUTH.cp in package com.android.providers.contacts 06-13 00:12:30.853: WARN/PackageManager(585): Unknown permission com.google.android.googleapps.permission.GOOGLE_AUTH in package com.android.development 06-13 00:12:30.913: WARN/PackageManager(585): Unknown permission com.google.android.googleapps.permission.GOOGLE_AUTH.ALL_SERVICES in package com.android.development 06-13 00:12:31.133: WARN/PackageManager(585): Unknown permission com.google.android.googleapps.permission.GOOGLE_AUTH.YouTubeUser in package com.android.development 06-13 00:12:31.143: WARN/PackageManager(585): Unknown permission com.google.android.googleapps.permission.ACCESS_GOOGLE_PASSWORD in package com.android.development 06-13 00:12:31.234: WARN/PackageManager(585): Unknown permission com.google.android.providers.gmail.permission.WRITE_GMAIL in package com.android.settings 06-13 00:12:31.254: WARN/PackageManager(585): Unknown permission com.google.android.providers.gmail.permission.READ_GMAIL in package com.android.settings 06-13 00:12:31.303: WARN/PackageManager(585): Unknown permission com.google.android.googleapps.permission.GOOGLE_AUTH in package com.android.settings 06-13 00:12:31.683: WARN/PackageManager(585): Unknown permission com.google.android.googleapps.permission.GOOGLE_AUTH in package com.android.browser 06-13 00:12:31.803: WARN/PackageManager(585): Unknown permission com.google.android.googleapps.permission.GOOGLE_AUTH.mail in package com.android.contacts 06-13 00:12:34.603: DEBUG/dalvikvm(585): GC freed 2851 objects / 161304 bytes in 845ms 06-13 00:12:35.403: INFO/SystemServer(585): Starting Content Manager. 06-13 00:12:39.954: WARN/ActivityManager(585): Unable to start service Intent { action=android.accounts.IAccountsService comp={com.google.android.googleapps/com.google.android.googleapps.GoogleLoginService} }: not found 06-13 00:12:40.063: WARN/AccountMonitor(585): Couldn't connect to Intent { action=android.accounts.IAccountsService comp={com.google.android.googleapps/com.google.android.googleapps.GoogleLoginService} } (Missing service?) 06-13 00:12:40.253: INFO/SystemServer(585): Starting System Content Providers. 06-13 00:12:40.553: INFO/ActivityThread(585): Publishing provider settings: com.android.providers.settings.SettingsProvider 06-13 00:12:41.433: INFO/ActivityThread(585): Publishing provider sync: android.content.SyncProvider 06-13 00:12:41.683: INFO/SystemServer(585): Starting Battery Service. 06-13 00:12:42.293: ERROR/BatteryService(585): Could not open '/sys/class/power_supply/usb/online' 06-13 00:12:42.433: ERROR/BatteryService(585): Could not open '/sys/class/power_supply/battery/batt_vol' 06-13 00:12:42.543: ERROR/BatteryService(585): Could not open '/sys/class/power_supply/battery/batt_temp' 06-13 00:12:42.933: INFO/SystemServer(585): Starting Hardware Service. 06-13 00:12:43.398: DEBUG/qemud(558): fdhandler_accept_event: accepting on fd 10 06-13 00:12:43.623: DEBUG/qemud(558): created client 0x10fd8 listening on fd 11 06-13 00:12:43.743: DEBUG/qemud(558): client_fd_receive: attempting registration for service 'hw-control' 06-13 00:12:43.873: DEBUG/qemud(558): client_fd_receive: - received channel id 2 06-13 00:15:20.695: WARN/SurfaceFlinger(585): executeScheduledBroadcasts() skipped, contention on the client. We'll try again later...

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fatal error C1014: too many include files : depth = 1024

- by numerical25

I have no idea what this means. But here is the code that it supposely is happening in. //======================================================================================= // d3dApp.cpp by Frank Luna (C) 2008 All Rights Reserved. //======================================================================================= #include "d3dApp.h" #include <stream> LRESULT CALLBACK MainWndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam) { static D3DApp* app = 0; switch( msg ) { case WM_CREATE: { // Get the 'this' pointer we passed to CreateWindow via the lpParam parameter. CREATESTRUCT* cs = (CREATESTRUCT*)lParam; app = (D3DApp*)cs->lpCreateParams; return 0; } } // Don't start processing messages until after WM_CREATE. if( app ) return app->msgProc(msg, wParam, lParam); else return DefWindowProc(hwnd, msg, wParam, lParam); } D3DApp::D3DApp(HINSTANCE hInstance) { mhAppInst = hInstance; mhMainWnd = 0; mAppPaused = false; mMinimized = false; mMaximized = false; mResizing = false; mFrameStats = L""; md3dDevice = 0; mSwapChain = 0; mDepthStencilBuffer = 0; mRenderTargetView = 0; mDepthStencilView = 0; mFont = 0; mMainWndCaption = L"D3D10 Application"; md3dDriverType = D3D10_DRIVER_TYPE_HARDWARE; mClearColor = D3DXCOLOR(0.0f, 0.0f, 1.0f, 1.0f); mClientWidth = 800; mClientHeight = 600; } D3DApp::~D3DApp() { ReleaseCOM(mRenderTargetView); ReleaseCOM(mDepthStencilView); ReleaseCOM(mSwapChain); ReleaseCOM(mDepthStencilBuffer); ReleaseCOM(md3dDevice); ReleaseCOM(mFont); } HINSTANCE D3DApp::getAppInst() { return mhAppInst; } HWND D3DApp::getMainWnd() { return mhMainWnd; } int D3DApp::run() { MSG msg = {0}; mTimer.reset(); while(msg.message != WM_QUIT) { // If there are Window messages then process them. if(PeekMessage( &msg, 0, 0, 0, PM_REMOVE )) { TranslateMessage( &msg ); DispatchMessage( &msg ); } // Otherwise, do animation/game stuff. else { mTimer.tick(); if( !mAppPaused ) updateScene(mTimer.getDeltaTime()); else Sleep(50); drawScene(); } } return (int)msg.wParam; } void D3DApp::initApp() { initMainWindow(); initDirect3D(); D3DX10_FONT_DESC fontDesc; fontDesc.Height = 24; fontDesc.Width = 0; fontDesc.Weight = 0; fontDesc.MipLevels = 1; fontDesc.Italic = false; fontDesc.CharSet = DEFAULT_CHARSET; fontDesc.OutputPrecision = OUT_DEFAULT_PRECIS; fontDesc.Quality = DEFAULT_QUALITY; fontDesc.PitchAndFamily = DEFAULT_PITCH | FF_DONTCARE; wcscpy(fontDesc.FaceName, L"Times New Roman"); D3DX10CreateFontIndirect(md3dDevice, &fontDesc, &mFont); } void D3DApp::onResize() { // Release the old views, as they hold references to the buffers we // will be destroying. Also release the old depth/stencil buffer. ReleaseCOM(mRenderTargetView); ReleaseCOM(mDepthStencilView); ReleaseCOM(mDepthStencilBuffer); // Resize the swap chain and recreate the render target view. HR(mSwapChain->ResizeBuffers(1, mClientWidth, mClientHeight, DXGI_FORMAT_R8G8B8A8_UNORM, 0)); ID3D10Texture2D* backBuffer; HR(mSwapChain->GetBuffer(0, __uuidof(ID3D10Texture2D), reinterpret_cast<void**>(&backBuffer))); HR(md3dDevice->CreateRenderTargetView(backBuffer, 0, &mRenderTargetView)); ReleaseCOM(backBuffer); // Create the depth/stencil buffer and view. D3D10_TEXTURE2D_DESC depthStencilDesc; depthStencilDesc.Width = mClientWidth; depthStencilDesc.Height = mClientHeight; depthStencilDesc.MipLevels = 1; depthStencilDesc.ArraySize = 1; depthStencilDesc.Format = DXGI_FORMAT_D24_UNORM_S8_UINT; depthStencilDesc.SampleDesc.Count = 1; // multisampling must match depthStencilDesc.SampleDesc.Quality = 0; // swap chain values. depthStencilDesc.Usage = D3D10_USAGE_DEFAULT; depthStencilDesc.BindFlags = D3D10_BIND_DEPTH_STENCIL; depthStencilDesc.CPUAccessFlags = 0; depthStencilDesc.MiscFlags = 0; HR(md3dDevice->CreateTexture2D(&depthStencilDesc, 0, &mDepthStencilBuffer)); HR(md3dDevice->CreateDepthStencilView(mDepthStencilBuffer, 0, &mDepthStencilView)); // Bind the render target view and depth/stencil view to the pipeline. md3dDevice->OMSetRenderTargets(1, &mRenderTargetView, mDepthStencilView); // Set the viewport transform. D3D10_VIEWPORT vp; vp.TopLeftX = 0; vp.TopLeftY = 0; vp.Width = mClientWidth; vp.Height = mClientHeight; vp.MinDepth = 0.0f; vp.MaxDepth = 1.0f; md3dDevice->RSSetViewports(1, &vp); } void D3DApp::updateScene(float dt) { // Code computes the average frames per second, and also the // average time it takes to render one frame. static int frameCnt = 0; static float t_base = 0.0f; frameCnt++; // Compute averages over one second period. if( (mTimer.getGameTime() - t_base) >= 1.0f ) { float fps = (float)frameCnt; // fps = frameCnt / 1 float mspf = 1000.0f / fps; std::wostringstream outs; outs.precision(6); outs << L"FPS: " << fps << L"\n" << "Milliseconds: Per Frame: " << mspf; mFrameStats = outs.str(); // Reset for next average. frameCnt = 0; t_base += 1.0f; } } void D3DApp::drawScene() { md3dDevice->ClearRenderTargetView(mRenderTargetView, mClearColor); md3dDevice->ClearDepthStencilView(mDepthStencilView, D3D10_CLEAR_DEPTH|D3D10_CLEAR_STENCIL, 1.0f, 0); } LRESULT D3DApp::msgProc(UINT msg, WPARAM wParam, LPARAM lParam) { switch( msg ) { // WM_ACTIVATE is sent when the window is activated or deactivated. // We pause the game when the window is deactivated and unpause it // when it becomes active. case WM_ACTIVATE: if( LOWORD(wParam) == WA_INACTIVE ) { mAppPaused = true; mTimer.stop(); } else { mAppPaused = false; mTimer.start(); } return 0; // WM_SIZE is sent when the user resizes the window. case WM_SIZE: // Save the new client area dimensions. mClientWidth = LOWORD(lParam); mClientHeight = HIWORD(lParam); if( md3dDevice ) { if( wParam == SIZE_MINIMIZED ) { mAppPaused = true; mMinimized = true; mMaximized = false; } else if( wParam == SIZE_MAXIMIZED ) { mAppPaused = false; mMinimized = false; mMaximized = true; onResize(); } else if( wParam == SIZE_RESTORED ) { // Restoring from minimized state? if( mMinimized ) { mAppPaused = false; mMinimized = false; onResize(); } // Restoring from maximized state? else if( mMaximized ) { mAppPaused = false; mMaximized = false; onResize(); } else if( mResizing ) { // If user is dragging the resize bars, we do not resize // the buffers here because as the user continuously // drags the resize bars, a stream of WM_SIZE messages are // sent to the window, and it would be pointless (and slow) // to resize for each WM_SIZE message received from dragging // the resize bars. So instead, we reset after the user is // done resizing the window and releases the resize bars, which // sends a WM_EXITSIZEMOVE message. } else // API call such as SetWindowPos or mSwapChain->SetFullscreenState. { onResize(); } } } return 0; // WM_EXITSIZEMOVE is sent when the user grabs the resize bars. case WM_ENTERSIZEMOVE: mAppPaused = true; mResizing = true; mTimer.stop(); return 0; // WM_EXITSIZEMOVE is sent when the user releases the resize bars. // Here we reset everything based on the new window dimensions. case WM_EXITSIZEMOVE: mAppPaused = false; mResizing = false; mTimer.start(); onResize(); return 0; // WM_DESTROY is sent when the window is being destroyed. case WM_DESTROY: PostQuitMessage(0); return 0; // The WM_MENUCHAR message is sent when a menu is active and the user presses // a key that does not correspond to any mnemonic or accelerator key. case WM_MENUCHAR: // Don't beep when we alt-enter. return MAKELRESULT(0, MNC_CLOSE); // Catch this message so to prevent the window from becoming too small. case WM_GETMINMAXINFO: ((MINMAXINFO*)lParam)->ptMinTrackSize.x = 200; ((MINMAXINFO*)lParam)->ptMinTrackSize.y = 200; return 0; } return DefWindowProc(mhMainWnd, msg, wParam, lParam); } void D3DApp::initMainWindow() { WNDCLASS wc; wc.style = CS_HREDRAW | CS_VREDRAW; wc.lpfnWndProc = MainWndProc; wc.cbClsExtra = 0; wc.cbWndExtra = 0; wc.hInstance = mhAppInst; wc.hIcon = LoadIcon(0, IDI_APPLICATION); wc.hCursor = LoadCursor(0, IDC_ARROW); wc.hbrBackground = (HBRUSH)GetStockObject(NULL_BRUSH); wc.lpszMenuName = 0; wc.lpszClassName = L"D3DWndClassName"; if( !RegisterClass(&wc) ) { MessageBox(0, L"RegisterClass FAILED", 0, 0); PostQuitMessage(0); } // Compute window rectangle dimensions based on requested client area dimensions. RECT R = { 0, 0, mClientWidth, mClientHeight }; AdjustWindowRect(&R, WS_OVERLAPPEDWINDOW, false); int width = R.right - R.left; int height = R.bottom - R.top; mhMainWnd = CreateWindow(L"D3DWndClassName", mMainWndCaption.c_str(), WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, width, height, 0, 0, mhAppInst, this); if( !mhMainWnd ) { MessageBox(0, L"CreateWindow FAILED", 0, 0); PostQuitMessage(0); } ShowWindow(mhMainWnd, SW_SHOW); UpdateWindow(mhMainWnd); } void D3DApp::initDirect3D() { // Fill out a DXGI_SWAP_CHAIN_DESC to describe our swap chain. DXGI_SWAP_CHAIN_DESC sd; sd.BufferDesc.Width = mClientWidth; sd.BufferDesc.Height = mClientHeight; sd.BufferDesc.RefreshRate.Numerator = 60; sd.BufferDesc.RefreshRate.Denominator = 1; sd.BufferDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM; sd.BufferDesc.ScanlineOrdering = DXGI_MODE_SCANLINE_ORDER_UNSPECIFIED; sd.BufferDesc.Scaling = DXGI_MODE_SCALING_UNSPECIFIED; // No multisampling. sd.SampleDesc.Count = 1; sd.SampleDesc.Quality = 0; sd.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT; sd.BufferCount = 1; sd.OutputWindow = mhMainWnd; sd.Windowed = true; sd.SwapEffect = DXGI_SWAP_EFFECT_DISCARD; sd.Flags = 0; // Create the device. UINT createDeviceFlags = 0; #if defined(DEBUG) || defined(_DEBUG) createDeviceFlags |= D3D10_CREATE_DEVICE_DEBUG; #endif HR( D3D10CreateDeviceAndSwapChain( 0, //default adapter md3dDriverType, 0, // no software device createDeviceFlags, D3D10_SDK_VERSION, &sd, &mSwapChain, &md3dDevice) ); // The remaining steps that need to be carried out for d3d creation // also need to be executed every time the window is resized. So // just call the onResize method here to avoid code duplication. onResize(); }

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C++ custom exceptions: run time performance and passing exceptions from C++ to C

- by skyeagle

I am writing a custom C++ exception class (so I can pass exceptions occuring in C++ to another language via a C API). My initial plan of attack was to proceed as follows: //C++ myClass { public: myClass(); ~myClass(); void foo() // throws myException int foo(const int i, const bool b) // throws myException } * myClassPtr; // C API #ifdef __cplusplus extern "C" { #endif myClassPtr MyClass_New(); void MyClass_Destroy(myClassPtr p); void MyClass_Foo(myClassPtr p); int MyClass_FooBar(myClassPtr p, int i, bool b); #ifdef __cplusplus }; #endif I need a way to be able to pass exceptions thrown in the C++ code to the C side. The information I want to pass to the C side is the following: (a). What (b). Where (c). Simple Stack Trace (just the sequence of error messages in order they occured, no debugging info etc) I want to modify my C API, so that the API functions take a pointer to a struct ExceptionInfo, which will contain any exception info (if an exception occured) before consuming the results of the invocation. This raises two questions: Question 1 1. Implementation of each of the C++ methods exposed in the C API needs to be enclosed in a try/catch statement. The performance implications for this seem quite serious (according to this article): "It is a mistake (with high runtime cost) to use C++ exception handling for events that occur frequently, or for events that are handled near the point of detection." At the same time, I remember reading somewhere in my C++ days, that all though exception handling is expensive, it only becmes expensive when an exception actually occurs. So, which is correct?. what to do?. Is there an alternative way that I can trap errors safely and pass the resulting error info to the C API?. Or is this a minor consideration (the article after all, is quite old, and hardware have improved a bit since then). Question 2 I wuld like to modify the exception class given in that article, so that it contains a simple stack trace, and I need some help doing that. Again, in order to make the exception class 'lightweight', I think its a good idea not to include any STL classes, like string or vector (good idea/bad idea?). Which potentially leaves me with a fixed length C string (char*) which will be stack allocated. So I can maybe just keep appending messages (delimted by a unique separator [up to maximum length of buffer])... Its been a while since I did any serious C++ coding, and I will be grateful for the help. BTW, this is what I have come up with so far (I am intentionally, not deriving from std::exception because of the performance reasons mentioned in the article, and I am instead, throwing an integral exception (based on an exception enumeration): class fast_exception { public: fast_exception(int what, char const* file=0, int line=0) : what_(what), line_(line), file_(file) {/*empty*/} int what() const { return what_; } int line() const { return line_; } char const* file() const { return file_; } private: int what_; int line_; char const[MAX_BUFFER_SIZE] file_; }

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Results Delphi users who wish to use HID USB in windows

- by Lex Dean

Results Delphi users who wish to use HID USB in windows HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\USB Contain a list if keys containing vender ID and Producer ID numbers that co inside with the USB web sites data base. These numbers and the GUID held within the key gives important information to execute the HID.dll that is otherwise imposable to execute. The Control Panel/System/Hardware/Device manager/USB Serial Bus Controllers/Mass Storage Devices/details simply lists the registry data. The access to the programmer has been documented through the API32.dll with a number of procedures that accesses the registry. But that is not the problem yet it looks like the problem!!!!!!!!! The key is info about the registry and how to use it. These keys are viewed in RegEdit.exe it’s self. Some parts of the registry like the USB have been given a windows security system type of protection with a Aurthz.dll to give the USB read and right protection. Even the api32.dll. Now only Microsoft give out these details and we all know Microsoft hate Delphi. Now C users have enjoyed this access for over 10 years now. Now some will make out that you should never give out such information because some idiot may make a stupid virus (true), but the argument is also do Delphi users need to be denied USB access for another ten years!!!!!!!!!!!!. What I do not have is the skill in is assembly code. I’m seeking for some one that can trace how regedit.exe gets its access through Aurthz.dll to access the USB data. So I’m asking all who reads this:- to partition any friend they have that has this skill to get the Aurthz.dll info needed. I find communicating with USB.org they reply when they have a positive email reply but do not bother should their email be a slightly negative policy. For all simple reasoning, all that USB had to do was to have a secure key as they have done, and to update the same data into a unsecured key every time the data is changed for USB developer to access. And not bother developers access to Aurthz.dll. Authz.dll with these functions for USB:- AuthzFreeResourceManager AuthzFreeContext AuthzAccessCheck(Flags: DWORD; AuthzClientContext: AUTHZ_CLIENT_CONTEXT_HANDLE; pRequest: PAUTHZ_ACCESS_REQUEST; AuditInfo: AUTHZ_AUDIT_INFO_HANDLE; pSecurityDescriptor: PSECURITY_DESCRIPTOR; OptionalSecurityDescriptorArray: PSECURITY_DESCRIPTOR; OptionalSecurityDescriptorCount: DWORD; //OPTIONAL, Var pReply: AUTHZ_ACCESS_REPLY; pAuthzHandle: PAUTHZ_ACCESS_CHECK_RESULTS_HANDLE): BOOl; AuthzInitializeContextFromSid(Flags: DWORD; UserSid: PSID; AuthzResourceManager: AUTHZ_RESOURCE_MANAGER_HANDLE; pExpirationTime: int64; Identifier: LUID; DynamicGroupArgs: PVOID; pAuthzClientContext: PAUTHZ_CLIENT_CONTEXT_HANDLE): BOOL; AuthzInitializeResourceManager(flags: DWORD; pfnAccessCheck: PFN_AUTHZ_DYNAMIC_ACCESS_CHECK; pfnComputeDynamicGroups: PFN_AUTHZ_COMPUTE_DYNAMIC_GROUPS; pfnFreeDynamicGroups: PFN_AUTHZ_FREE_DYNAMIC_GROUPS; ResourceManagerName: PWideChar; pAuthzResourceManager: PAUTHZ_RESOURCE_MANAGER_HANDLE): BOOL; further in Authz.h on kolers.com J Lex Dean.

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Preloading Winforms using a Stack and Hidden Form

- by msarchet

I am currently working on a project where we have a couple very control heavy user controls that are being used inside a MDI Controller. This is a Line of Business app and it is very data driven. The problem that we were facing was the aforementioned controls would load very very slowly, we dipped our toes into the waters of multi-threading for the control loading but that was not a solution for a plethora of reasons. Our solution to increasing the performance of the controls ended up being to 'pre-load' the forms onto a hidden window, create a stack of the existing forms, and pop off of the stack as the user requested a form. Now the current issue that I'm seeing that will arise as we push this 'fix' out to our testers, and the ultimately our users is this: Currently the 'hidden' window that contains the preloaded forms is visible in task manager, and can be shut down thus causing all of the controls to be lost. Then you have to create them on the fly losing the performance increase. Secondly, when the user uses up the stack we lose the performance increase (current solution to this is discussed below). For the first problem, is there a way to hide this window from task manager, perhaps by creating a parent form that encapsulates both the main form for the program and the hidden form? Our current solution to the second problem is to have an inactivity timer that when it fires checks the stacks for the forms, and loads a new form onto the stack if it isn't full. However this still has the potential of causing a hang in the UI while it creates the forms. A possible solutions for this would be to put 'used' forms back onto the stack, but I feel like there may be a better way. EDIT: For control design clarification From the comments I have realized there is a lack of clarity on what exactly the control is doing. Here is a detailed explanation of one of the controls. I have defined for this control loading time as the time it takes from when a user performs an action that would open a control, until the time a control is accessible to be edited. The control is for entering Prescriptions for a patient in the system, it has about 5 tabbed groups with a total of about 180 controls. The user selects to open a new Prescription control from inside the main program, this control is loaded into the MDI Child area of the Main Form (which is a DevExpress Ribbon Control). From the time the user clicks New (or loads an existing record) until the control is visible. The list of actions that happens in the program is this: The stack is checked for the existence of a control. If the control exists it is popped off of the stack. The control is rendered on screen. This is what takes 2 seconds The control then is populated with a blank object, or with existing data. The control is ready to use. The average percentage of loading time, across about 10 different machines, with different hardware the control rendering takes about 85 - 95 percent of the control loading time. Without using the stack the control takes about 2 seconds to load, with the stack it takes about .8 seconds, this second time is acceptable. I have looked at Henry's link and I had previously already implemented the applicable suggestions. Again I re-iterate my question as What is the best method to move controls to and from the stack with as little UI interruption as possible?

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Problems extracting information from RSS feed description field

- by Graeme

Hi, I've built an iPhone application using the parsing code from the TopSongs sample iPhone application. I've hit a problem though - the feed I'm trying to parse data from doesn't have a separate field for every piece of information (i.e. if it was for a feed about dogs, all the information such as dog type, dog age and dog price is contained in the feed. However, the TopSongs app relies on information having its own tags, so instead of using it uses and . So my question is this. How do I extract this information from the description field so that it can be parsed using the TopSongs parser? Can you somehow extract the dog age, price and type information using Yahoo Pipes and use that RSS feed for the feed? Or is there code that I can add to do it in application? Update: To view the code of my application parser (based on the TopSongs Core Data Apple provided application, see below. Here's a sample of one item from the the actual RSS feed I'm using (the description is longer, and has status,size, and a couple of other fields, but they're all formatted the same.: <item> <title>MOE, MARGRET STREET</title> <description> District/Region: REGION 09Location: MOEName: MARGRET STREET</description> <pubDate>Thu,11 Mar 2010 05:43:03 GMT</pubDate> <guid>1266148</guid> </item> /* File: iTunesRSSImporter.m Abstract: Downloads, parses, and imports the iTunes top songs RSS feed into Core Data. Version: 1.1 Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple Inc. ("Apple") in consideration of your agreement to the following terms, and your use, installation, modification or redistribution of this Apple software constitutes acceptance of these terms. If you do not agree with these terms, please do not use, install, modify or redistribute this Apple software. In consideration of your agreement to abide by the following terms, and subject to these terms, Apple grants you a personal, non-exclusive license, under Apple's copyrights in this original Apple software (the "Apple Software"), to use, reproduce, modify and redistribute the Apple Software, with or without modifications, in source and/or binary forms; provided that if you redistribute the Apple Software in its entirety and without modifications, you must retain this notice and the following text and disclaimers in all such redistributions of the Apple Software. Neither the name, trademarks, service marks or logos of Apple Inc. may be used to endorse or promote products derived from the Apple Software without specific prior written permission from Apple. Except as expressly stated in this notice, no other rights or licenses, express or implied, are granted by Apple herein, including but not limited to any patent rights that may be infringed by your derivative works or by other works in which the Apple Software may be incorporated. The Apple Software is provided by Apple on an "AS IS" basis. APPLE MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS. IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION, MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED AND WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE), STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. Copyright (C) 2009 Apple Inc. All Rights Reserved. */ #import "iTunesRSSImporter.h" #import "Song.h" #import "Category.h" #import "CategoryCache.h" #import <libxml/tree.h> // Function prototypes for SAX callbacks. This sample implements a minimal subset of SAX callbacks. // Depending on your application's needs, you might want to implement more callbacks. static void startElementSAX(void *context, const xmlChar *localname, const xmlChar *prefix, const xmlChar *URI, int nb_namespaces, const xmlChar **namespaces, int nb_attributes, int nb_defaulted, const xmlChar **attributes); static void endElementSAX(void *context, const xmlChar *localname, const xmlChar *prefix, const xmlChar *URI); static void charactersFoundSAX(void *context, const xmlChar *characters, int length); static void errorEncounteredSAX(void *context, const char *errorMessage, ...); // Forward reference. The structure is defined in full at the end of the file. static xmlSAXHandler simpleSAXHandlerStruct; // Class extension for private properties and methods. @interface iTunesRSSImporter () @property BOOL storingCharacters; @property (nonatomic, retain) NSMutableData *characterBuffer; @property BOOL done; @property BOOL parsingASong; @property NSUInteger countForCurrentBatch; @property (nonatomic, retain) Song *currentSong; @property (nonatomic, retain) NSURLConnection *rssConnection; @property (nonatomic, retain) NSDateFormatter *dateFormatter; // The autorelease pool property is assign because autorelease pools cannot be retained. @property (nonatomic, assign) NSAutoreleasePool *importPool; @end static double lookuptime = 0; @implementation iTunesRSSImporter @synthesize iTunesURL, delegate, persistentStoreCoordinator; @synthesize rssConnection, done, parsingASong, storingCharacters, currentSong, countForCurrentBatch, characterBuffer, dateFormatter, importPool; - (void)dealloc { [iTunesURL release]; [characterBuffer release]; [currentSong release]; [rssConnection release]; [dateFormatter release]; [persistentStoreCoordinator release]; [insertionContext release]; [songEntityDescription release]; [theCache release]; [super dealloc]; } - (void)main { self.importPool = [[NSAutoreleasePool alloc] init]; if (delegate && [delegate respondsToSelector:@selector(importerDidSave:)]) { [[NSNotificationCenter defaultCenter] addObserver:delegate selector:@selector(importerDidSave:) name:NSManagedObjectContextDidSaveNotification object:self.insertionContext]; } done = NO; self.dateFormatter = [[[NSDateFormatter alloc] init] autorelease]; [dateFormatter setDateStyle:NSDateFormatterLongStyle]; [dateFormatter setTimeStyle:NSDateFormatterNoStyle]; // necessary because iTunes RSS feed is not localized, so if the device region has been set to other than US // the date formatter must be set to US locale in order to parse the dates [dateFormatter setLocale:[[[NSLocale alloc] initWithLocaleIdentifier:@"US"] autorelease]]; self.characterBuffer = [NSMutableData data]; NSURLRequest *theRequest = [NSURLRequest requestWithURL:iTunesURL]; // create the connection with the request and start loading the data rssConnection = [[NSURLConnection alloc] initWithRequest:theRequest delegate:self]; // This creates a context for "push" parsing in which chunks of data that are not "well balanced" can be passed // to the context for streaming parsing. The handler structure defined above will be used for all the parsing. // The second argument, self, will be passed as user data to each of the SAX handlers. The last three arguments // are left blank to avoid creating a tree in memory. context = xmlCreatePushParserCtxt(&simpleSAXHandlerStruct, self, NULL, 0, NULL); if (rssConnection != nil) { do { [[NSRunLoop currentRunLoop] runMode:NSDefaultRunLoopMode beforeDate:[NSDate distantFuture]]; } while (!done); } // Display the total time spent finding a specific object for a relationship NSLog(@"lookup time %f", lookuptime); // Release resources used only in this thread. xmlFreeParserCtxt(context); self.characterBuffer = nil; self.dateFormatter = nil; self.rssConnection = nil; self.currentSong = nil; [theCache release]; theCache = nil; NSError *saveError = nil; NSAssert1([insertionContext save:&saveError], @"Unhandled error saving managed object context in import thread: %@", [saveError localizedDescription]); if (delegate && [delegate respondsToSelector:@selector(importerDidSave:)]) { [[NSNotificationCenter defaultCenter] removeObserver:delegate name:NSManagedObjectContextDidSaveNotification object:self.insertionContext]; } if (self.delegate != nil && [self.delegate respondsToSelector:@selector(importerDidFinishParsingData:)]) { [self.delegate importerDidFinishParsingData:self]; } [importPool release]; self.importPool = nil; } - (NSManagedObjectContext *)insertionContext { if (insertionContext == nil) { insertionContext = [[NSManagedObjectContext alloc] init]; [insertionContext setPersistentStoreCoordinator:self.persistentStoreCoordinator]; } return insertionContext; } - (void)forwardError:(NSError *)error { if (self.delegate != nil && [self.delegate respondsToSelector:@selector(importer:didFailWithError:)]) { [self.delegate importer:self didFailWithError:error]; } } - (NSEntityDescription *)songEntityDescription { if (songEntityDescription == nil) { songEntityDescription = [[NSEntityDescription entityForName:@"Song" inManagedObjectContext:self.insertionContext] retain]; } return songEntityDescription; } - (CategoryCache *)theCache { if (theCache == nil) { theCache = [[CategoryCache alloc] init]; theCache.managedObjectContext = self.insertionContext; } return theCache; } - (Song *)currentSong { if (currentSong == nil) { currentSong = [[Song alloc] initWithEntity:self.songEntityDescription insertIntoManagedObjectContext:self.insertionContext]; } return currentSong; } #pragma mark NSURLConnection Delegate methods // Forward errors to the delegate. - (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error { [self performSelectorOnMainThread:@selector(forwardError:) withObject:error waitUntilDone:NO]; // Set the condition which ends the run loop. done = YES; } // Called when a chunk of data has been downloaded. - (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data { // Process the downloaded chunk of data. xmlParseChunk(context, (const char *)[data bytes], [data length], 0); } - (void)connectionDidFinishLoading:(NSURLConnection *)connection { // Signal the context that parsing is complete by passing "1" as the last parameter. xmlParseChunk(context, NULL, 0, 1); context = NULL; // Set the condition which ends the run loop. done = YES; } #pragma mark Parsing support methods static const NSUInteger kImportBatchSize = 20; - (void)finishedCurrentSong { parsingASong = NO; self.currentSong = nil; countForCurrentBatch++; // Periodically purge the autorelease pool and save the context. The frequency of this action may need to be tuned according to the // size of the objects being parsed. The goal is to keep the autorelease pool from growing too large, but // taking this action too frequently would be wasteful and reduce performance. if (countForCurrentBatch == kImportBatchSize) { [importPool release]; self.importPool = [[NSAutoreleasePool alloc] init]; NSError *saveError = nil; NSAssert1([insertionContext save:&saveError], @"Unhandled error saving managed object context in import thread: %@", [saveError localizedDescription]); countForCurrentBatch = 0; } } /* Character data is appended to a buffer until the current element ends. */ - (void)appendCharacters:(const char *)charactersFound length:(NSInteger)length { [characterBuffer appendBytes:charactersFound length:length]; } - (NSString *)currentString { // Create a string with the character data using UTF-8 encoding. UTF-8 is the default XML data encoding. NSString *currentString = [[[NSString alloc] initWithData:characterBuffer encoding:NSUTF8StringEncoding] autorelease]; [characterBuffer setLength:0]; return currentString; } @end #pragma mark SAX Parsing Callbacks // The following constants are the XML element names and their string lengths for parsing comparison. // The lengths include the null terminator, to ensure exact matches. static const char *kName_Item = "item"; static const NSUInteger kLength_Item = 5; static const char *kName_Title = "title"; static const NSUInteger kLength_Title = 6; static const char *kName_Category = "category"; static const NSUInteger kLength_Category = 9; static const char *kName_Itms = "itms"; static const NSUInteger kLength_Itms = 5; static const char *kName_Artist = "description"; static const NSUInteger kLength_Artist = 7; static const char *kName_Album = "description"; static const NSUInteger kLength_Album = 6; static const char *kName_ReleaseDate = "releasedate"; static const NSUInteger kLength_ReleaseDate = 12; /* This callback is invoked when the importer finds the beginning of a node in the XML. For this application, out parsing needs are relatively modest - we need only match the node name. An "item" node is a record of data about a song. In that case we create a new Song object. The other nodes of interest are several of the child nodes of the Song currently being parsed. For those nodes we want to accumulate the character data in a buffer. Some of the child nodes use a namespace prefix. */ static void startElementSAX(void *parsingContext, const xmlChar *localname, const xmlChar *prefix, const xmlChar *URI, int nb_namespaces, const xmlChar **namespaces, int nb_attributes, int nb_defaulted, const xmlChar **attributes) { iTunesRSSImporter *importer = (iTunesRSSImporter *)parsingContext; // The second parameter to strncmp is the name of the element, which we known from the XML schema of the feed. // The third parameter to strncmp is the number of characters in the element name, plus 1 for the null terminator. if (prefix == NULL && !strncmp((const char *)localname, kName_Item, kLength_Item)) { importer.parsingASong = YES; } else if (importer.parsingASong && ( (prefix == NULL && (!strncmp((const char *)localname, kName_Title, kLength_Title) || !strncmp((const char *)localname, kName_Category, kLength_Category))) || ((prefix != NULL && !strncmp((const char *)prefix, kName_Itms, kLength_Itms)) && (!strncmp((const char *)localname, kName_Artist, kLength_Artist) || !strncmp((const char *)localname, kName_Album, kLength_Album) || !strncmp((const char *)localname, kName_ReleaseDate, kLength_ReleaseDate))) )) { importer.storingCharacters = YES; } } /* This callback is invoked when the parse reaches the end of a node. At that point we finish processing that node, if it is of interest to us. For "item" nodes, that means we have completed parsing a Song object. We pass the song to a method in the superclass which will eventually deliver it to the delegate. For the other nodes we care about, this means we have all the character data. The next step is to create an NSString using the buffer contents and store that with the current Song object. */ static void endElementSAX(void *parsingContext, const xmlChar *localname, const xmlChar *prefix, const xmlChar *URI) { iTunesRSSImporter *importer = (iTunesRSSImporter *)parsingContext; if (importer.parsingASong == NO) return; if (prefix == NULL) { if (!strncmp((const char *)localname, kName_Item, kLength_Item)) { [importer finishedCurrentSong]; } else if (!strncmp((const char *)localname, kName_Title, kLength_Title)) { importer.currentSong.title = importer.currentString; } else if (!strncmp((const char *)localname, kName_Category, kLength_Category)) { double before = [NSDate timeIntervalSinceReferenceDate]; Category *category = [importer.theCache categoryWithName:importer.currentString]; double delta = [NSDate timeIntervalSinceReferenceDate] - before; lookuptime += delta; importer.currentSong.category = category; } } else if (!strncmp((const char *)prefix, kName_Itms, kLength_Itms)) { if (!strncmp((const char *)localname, kName_Artist, kLength_Artist)) { NSString *string = importer.currentSong.artist; NSArray *strings = [string componentsSeparatedByString: @", "]; //importer.currentSong.artist = importer.currentString; } else if (!strncmp((const char *)localname, kName_Album, kLength_Album)) { importer.currentSong.album = importer.currentString; } else if (!strncmp((const char *)localname, kName_ReleaseDate, kLength_ReleaseDate)) { NSString *dateString = importer.currentString; importer.currentSong.releaseDate = [importer.dateFormatter dateFromString:dateString]; } } importer.storingCharacters = NO; } /* This callback is invoked when the parser encounters character data inside a node. The importer class determines how to use the character data. */ static void charactersFoundSAX(void *parsingContext, const xmlChar *characterArray, int numberOfCharacters) { iTunesRSSImporter *importer = (iTunesRSSImporter *)parsingContext; // A state variable, "storingCharacters", is set when nodes of interest begin and end. // This determines whether character data is handled or ignored. if (importer.storingCharacters == NO) return; [importer appendCharacters:(const char *)characterArray length:numberOfCharacters]; } /* A production application should include robust error handling as part of its parsing implementation. The specifics of how errors are handled depends on the application. */ static void errorEncounteredSAX(void *parsingContext, const char *errorMessage, ...) { // Handle errors as appropriate for your application. NSCAssert(NO, @"Unhandled error encountered during SAX parse."); } // The handler struct has positions for a large number of callback functions. If NULL is supplied at a given position, // that callback functionality won't be used. Refer to libxml documentation at http://www.xmlsoft.org for more information // about the SAX callbacks. static xmlSAXHandler simpleSAXHandlerStruct = { NULL, /* internalSubset */ NULL, /* isStandalone */ NULL, /* hasInternalSubset */ NULL, /* hasExternalSubset */ NULL, /* resolveEntity */ NULL, /* getEntity */ NULL, /* entityDecl */ NULL, /* notationDecl */ NULL, /* attributeDecl */ NULL, /* elementDecl */ NULL, /* unparsedEntityDecl */ NULL, /* setDocumentLocator */ NULL, /* startDocument */ NULL, /* endDocument */ NULL, /* startElement*/ NULL, /* endElement */ NULL, /* reference */ charactersFoundSAX, /* characters */ NULL, /* ignorableWhitespace */ NULL, /* processingInstruction */ NULL, /* comment */ NULL, /* warning */ errorEncounteredSAX, /* error */ NULL, /* fatalError //: unused error() get all the errors */ NULL, /* getParameterEntity */ NULL, /* cdataBlock */ NULL, /* externalSubset */ XML_SAX2_MAGIC, // NULL, startElementSAX, /* startElementNs */ endElementSAX, /* endElementNs */ NULL, /* serror */ }; Thanks.

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DirectX: Render to a screen buffer without using a render target

- by knight666

Hello, I'm writing an open source 2D game engine, and I want to support as many devices and platforms as possible. I currently only have Windows Mobile though. I'm rendering using DirectX Mobile, with DirectDraw as a fallback path. However, I've run into a bit of trouble. It seems that while the reference driver supports createRenderTarget, many many many physical devices do not. I need some way to render to the screen without using a render target, because I render sprites using textured quads, but I also need to be able to draw individual pixels. This is how I do it right now: // save old values if (Error::Failed(m_D3DDevice->GetRenderTarget(&m_D3DOldTarget))) { ERROR_EXPLAIN("Could not retrieve backbuffer."); return false; } // clear render surface if (Error::Failed(m_D3DDevice->SetRenderTarget(m_D3DRenderSurface, NULL))) { ERROR_EXPLAIN("Could not set render target to render texture."); return false; } if (Error::Failed (m_D3DDevice->Clear( 0, NULL, // target rectangle D3DMCLEAR_TARGET, D3DMCOLOR_XRGB(0, 0, 0), // clear color 1.0f, 0 ) ) ) { ERROR_EXPLAIN("Failed to clear render texture."); return false; } D3DMLOCKED_RECT render_rect; if (Error::Failed(m_D3DRenderSurface->LockRect(&render_rect, NULL, NULL))) { ERROR_EXPLAIN("Failed to lock render surface pixels."); } else { m_D3DBackSurf->SetBuffer((Pixel*)render_rect.pBits); m_D3DRenderSurface->UnlockRect(); } // begin scene if (Error::Failed(m_D3DDevice->BeginScene())) { ERROR_EXPLAIN("Failed to start rendering."); return false; } // ===================== // example rendering // ===================== // some other stuff, but the most important part of rendering a sprite: device->SetTexture(0, m_Texture)); device->SetStreamSource(0, m_VertexBuffer, sizeof(Vertex)); device->DrawPrimitive(D3DMPT_TRIANGLELIST, 0, 2); // plotting a pixel Surface* target = (Surface*)Device::GetRenderMethod()->GetRenderTarget(); buffer = target->GetBuffer(); buffer[somepixel] = MAKECOLOR(255, 0, 0); // end scene if (Error::Failed(device->EndScene())) { ERROR_EXPLAIN("Failed to end scene."); return false; } // clear screen if (Error::Failed(device->SetRenderTarget(m_D3DOldTarget, NULL))) { ERROR_EXPLAIN("Couldn't set render target to backbuffer."); return false; } if (Error::Failed(device->GetBackBuffer ( 0, D3DMBACKBUFFER_TYPE_MONO, &m_D3DBack ) ) ) { ERROR_EXPLAIN("Couldn't retrieve backbuffer."); return false; } RECT dest = { 0, 0, Device::GetWidth(), Device::GetHeight() }; if (Error::Failed( device->StretchRect ( m_D3DRenderSurface, NULL, m_D3DBack, &dest, D3DMTEXF_NONE ) ) ) { ERROR_EXPLAIN("Failed to stretch render texture to backbuffer."); return false; } if (Error::Failed(device->Present(NULL, NULL, NULL, NULL))) { ERROR_EXPLAIN("Failed to present device."); return false; } I'm looking for a way to do the same thing (render sprites using hardware acceleration and plot pixels on a buffer) without using a render target. Thanks in advance.

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i am using winsock2.h in c language the following errors are unuderstandable help required?

- by moon

i am going to paste here my code an errors :::: #include "stdio.h" #include "winsock2.h" #define SIO_RCVALL _WSAIOW(IOC_VENDOR,1) //this removes the need of mstcpip.h void StartSniffing (SOCKET Sock); //This will sniff here and there void ProcessPacket (unsigned char* , int); //This will decide how to digest void PrintIpHeader (unsigned char* , int); void PrintUdpPacket (unsigned char* , int); void ConvertToHex (unsigned char* , unsigned int); void PrintData (unsigned char* , int); //IP Header Structure typedef struct ip_hdr { unsigned char ip_header_len:4; // 4-bit header length (in 32-bit words) normally=5 (Means 20 Bytes may be 24 also) unsigned char ip_version :4; // 4-bit IPv4 version unsigned char ip_tos; // IP type of service unsigned short ip_total_length; // Total length unsigned short ip_id; // Unique identifier unsigned char ip_frag_offset :5; // Fragment offset field unsigned char ip_more_fragment :1; unsigned char ip_dont_fragment :1; unsigned char ip_reserved_zero :1; unsigned char ip_frag_offset1; //fragment offset unsigned char ip_ttl; // Time to live unsigned char ip_protocol; // Protocol(TCP,UDP etc) unsigned short ip_checksum; // IP checksum unsigned int ip_srcaddr; // Source address unsigned int ip_destaddr; // Source address } IPV4_HDR; //UDP Header Structure typedef struct udp_hdr { unsigned short source_port; // Source port no. unsigned short dest_port; // Dest. port no. unsigned short udp_length; // Udp packet length unsigned short udp_checksum; // Udp checksum (optional) } UDP_HDR; //ICMP Header Structure typedef struct icmp_hdr { BYTE type; // ICMP Error type BYTE code; // Type sub code USHORT checksum; USHORT id; USHORT seq; } ICMP_HDR; FILE *logfile; int tcp=0,udp=0,icmp=0,others=0,igmp=0,total=0,i,j; struct sockaddr_in source,dest; char hex[2]; //Its free! IPV4_HDR *iphdr; UDP_HDR *udpheader; int main() { SOCKET sniffer; struct in_addr addr; int in; char hostname[100]; struct hostent *local; WSADATA wsa; //logfile=fopen("log.txt","w"); //if(logfile==NULL) printf("Unable to create file."); //Initialise Winsock printf("\nInitialising Winsock..."); if (WSAStartup(MAKEWORD(2,2), &wsa) != 0) { printf("WSAStartup() failed.\n"); return 1; } printf("Initialised"); //Create a RAW Socket printf("\nCreating RAW Socket..."); sniffer = socket(AF_INET, SOCK_RAW, IPPROTO_IP); if (sniffer == INVALID_SOCKET) { printf("Failed to create raw socket.\n"); return 1; } printf("Created."); //Retrive the local hostname if (gethostname(hostname, sizeof(hostname)) == SOCKET_ERROR) { printf("Error : %d",WSAGetLastError()); return 1; } printf("\nHost name : %s \n",hostname); //Retrive the available IPs of the local host local = gethostbyname(hostname); printf("\nAvailable Network Interfaces : \n"); if (local == NULL) { printf("Error : %d.\n",WSAGetLastError()); return 1; } for (i = 0; local->h_addr_list[i] != 0; ++i) { memcpy(&addr, local->h_addr_list[i], sizeof(struct in_addr)); printf("Interface Number : %d Address : %s\n",i,inet_ntoa(addr)); } printf("Enter the interface number you would like to sniff : "); scanf("%d",&in); memset(&dest, 0, sizeof(dest)); memcpy(&dest.sin_addr.s_addr,local->h_addr_list[in],sizeof(dest.sin_addr.s_addr)); dest.sin_family = AF_INET; dest.sin_port = 0; printf("\nBinding socket to local system and port 0 ..."); if (bind(sniffer,(struct sockaddr *)&dest,sizeof(dest)) == SOCKET_ERROR) { printf("bind(%s) failed.\n", inet_ntoa(addr)); return 1; } printf("Binding successful"); //Enable this socket with the power to sniff : SIO_RCVALL is the key Receive ALL ;) j=1; printf("\nSetting socket to sniff..."); if (WSAIoctl(sniffer, SIO_RCVALL,&j, sizeof(j), 0, 0,(LPDWORD)&in,0, 0) == SOCKET_ERROR) { printf("WSAIoctl() failed.\n"); return 1; } printf("Socket set."); //Begin printf("\nStarted Sniffing\n"); printf("Packet Capture Statistics...\n"); StartSniffing(sniffer); //Happy Sniffing //End closesocket(sniffer); WSACleanup(); return 0; } void StartSniffing(SOCKET sniffer) { unsigned char *Buffer = ( unsigned char *)malloc(65536); //Its Big! int mangobyte; if (Buffer == NULL) { printf("malloc() failed.\n"); return; } do { mangobyte = recvfrom(sniffer,(char *)Buffer,65536,0,0,0); //Eat as much as u can if(mangobyte > 0) ProcessPacket(Buffer, mangobyte); else printf( "recvfrom() failed.\n"); } while (mangobyte > 0); free(Buffer); } void ProcessPacket(unsigned char* Buffer, int Size) { iphdr = (IPV4_HDR *)Buffer; ++total; switch (iphdr->ip_protocol) //Check the Protocol and do accordingly... { case 1: //ICMP Protocol ++icmp; //PrintIcmpPacket(Buffer,Size); break; case 2: //IGMP Protocol ++igmp; break; case 6: //TCP Protocol ++tcp; //PrintTcpPacket(Buffer,Size); break; case 17: //UDP Protocol ++udp; PrintUdpPacket(Buffer,Size); break; default: //Some Other Protocol like ARP etc. ++others; break; } printf("TCP : %d UDP : %d ICMP : %d IGMP : %d Others : %d Total : %d\r",tcp,udp,icmp,igmp,others,total); } void PrintIpHeader (unsigned char* Buffer, int Size) { unsigned short iphdrlen; iphdr = (IPV4_HDR *)Buffer; iphdrlen = iphdr->ip_header_len*4; memset(&source, 0, sizeof(source)); source.sin_addr.s_addr = iphdr->ip_srcaddr; memset(&dest, 0, sizeof(dest)); dest.sin_addr.s_addr = iphdr->ip_destaddr; fprintf(logfile,"\n"); fprintf(logfile,"IP Header\n"); fprintf(logfile," |-IP Version : %d\n",(unsigned int)iphdr->ip_version); fprintf(logfile," |-IP Header Length : %d DWORDS or %d Bytes\n",(unsigned int)iphdr->ip_header_len); fprintf(logfile," |-Type Of Service : %d\n",(unsigned int)iphdr->ip_tos); fprintf(logfile," |-IP Total Length : %d Bytes(Size of Packet)\n",ntohs(iphdr->ip_total_length)); fprintf(logfile," |-Identification : %d\n",ntohs(iphdr->ip_id)); fprintf(logfile," |-Reserved ZERO Field : %d\n",(unsigned int)iphdr->ip_reserved_zero); fprintf(logfile," |-Dont Fragment Field : %d\n",(unsigned int)iphdr->ip_dont_fragment); fprintf(logfile," |-More Fragment Field : %d\n",(unsigned int)iphdr->ip_more_fragment); fprintf(logfile," |-TTL : %d\n",(unsigned int)iphdr->ip_ttl); fprintf(logfile," |-Protocol : %d\n",(unsigned int)iphdr->ip_protocol); fprintf(logfile," |-Checksum : %d\n",ntohs(iphdr->ip_checksum)); fprintf(logfile," |-Source IP : %s\n",inet_ntoa(source.sin_addr)); fprintf(logfile," |-Destination IP : %s\n",inet_ntoa(dest.sin_addr)); } void PrintUdpPacket(unsigned char *Buffer,int Size) { unsigned short iphdrlen; iphdr = (IPV4_HDR *)Buffer; iphdrlen = iphdr->ip_header_len*4; udpheader = (UDP_HDR *)(Buffer + iphdrlen); fprintf(logfile,"\n\n***********************UDP Packet*************************\n"); PrintIpHeader(Buffer,Size); fprintf(logfile,"\nUDP Header\n"); fprintf(logfile," |-Source Port : %d\n",ntohs(udpheader->source_port)); fprintf(logfile," |-Destination Port : %d\n",ntohs(udpheader->dest_port)); fprintf(logfile," |-UDP Length : %d\n",ntohs(udpheader->udp_length)); fprintf(logfile," |-UDP Checksum : %d\n",ntohs(udpheader->udp_checksum)); fprintf(logfile,"\n"); fprintf(logfile,"IP Header\n"); PrintData(Buffer,iphdrlen); fprintf(logfile,"UDP Header\n"); PrintData(Buffer+iphdrlen,sizeof(UDP_HDR)); fprintf(logfile,"Data Payload\n"); PrintData(Buffer+iphdrlen+sizeof(UDP_HDR) ,(Size - sizeof(UDP_HDR) - iphdr->ip_header_len*4)); fprintf(logfile,"\n###########################################################"); } void PrintData (unsigned char* data , int Size) { for(i=0 ; i < Size ; i++) { if( i!=0 && i%16==0) //if one line of hex printing is complete... { fprintf(logfile," "); for(j=i-16 ; j=32 && data[j]<=128) fprintf(logfile,"%c",(unsigned char)data[j]); //if its a number or alphabet else fprintf(logfile,"."); //otherwise print a dot } fprintf(logfile,"\n"); } if(i%16==0) fprintf(logfile," "); fprintf(logfile," %02X",(unsigned int)data[i]); if( i==Size-1) //print the last spaces { for(j=0;j<15-i%16;j++) fprintf(logfile," "); //extra spaces fprintf(logfile," "); for(j=i-i%16 ; j<=i ; j++) { if(data[j]>=32 && data[j]<=128) fprintf(logfile,"%c",(unsigned char)data[j]); else fprintf(logfile,"."); } fprintf(logfile,"\n"); } } } following are the errors Error 1 error LNK2019: unresolved external symbol __imp__WSACleanup@0 referenced in function _main sniffer.obj sniffer test Error 2 error LNK2019: unresolved external symbol __imp__closesocket@4 referenced in function _main sniffer.obj sniffer test Error 3 error LNK2019: unresolved external symbol __imp__WSAIoctl@36 referenced in function _main sniffer.obj sniffer test Error 4 error LNK2019: unresolved external symbol __imp__bind@12 referenced in function _main sniffer.obj sniffer test Error 5 error LNK2019: unresolved external symbol __imp__inet_ntoa@4 referenced in function _main sniffer.obj sniffer test Error 6 error LNK2019: unresolved external symbol __imp__gethostbyname@4 referenced in function _main sniffer.obj sniffer test Error 7 error LNK2019: unresolved external symbol __imp__WSAGetLastError@0 referenced in function _main sniffer.obj sniffer test Error 8 error LNK2019: unresolved external symbol __imp__gethostname@8 referenced in function _main sniffer.obj sniffer test Error 9 error LNK2019: unresolved external symbol __imp__socket@12 referenced in function _main sniffer.obj sniffer test Error 10 error LNK2019: unresolved external symbol __imp__WSAStartup@8 referenced in function _main sniffer.obj sniffer test Error 11 error LNK2019: unresolved external symbol __imp__recvfrom@24 referenced in function "void __cdecl StartSniffing(unsigned int)" (?StartSniffing@@YAXI@Z) sniffer.obj sniffer test Error 12 error LNK2019: unresolved external symbol __imp__ntohs@4 referenced in function "void __cdecl PrintIpHeader(unsigned char *,int)" (?PrintIpHeader@@YAXPAEH@Z) sniffer.obj sniffer test Error 13 fatal error LNK1120: 12 unresolved externals E:\CWM\sniffer test\Debug\sniffer test.exe sniffer test

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Does anyone have database, programming language/framework suggestions for a GUI point of sale system

- by Jason Down

Our company has a point of sale system with many extras, such as ordering and receiving functionality, sales and order history etc. Our main issue is that the system was not designed properly from the ground up, so it takes too long to make fixes and handle requests from our customers. Also, the current technology we are using (Progress database, Progress 4GL for the language) incurs quite a bit of licensing expenses on our customers due to mutli-user license fees for database connections etc. After a lot of discussion it is looking like we will probably start over from scratch (while maintaining the current product at least for the time being). We are looking for a couple of things: Create the system with a nice GUI front end (it is currently CHUI and the application was not built in a way that allows us to redesign the front end... no layering or separation of business logic and gui...shudder). Create the system with the ability to modularize different functionality so the product doesn't have to include all features. This would keep the cost down for our current customers that want basic functionality and a lower price tag. The bells and whistles would be available for those that would want them. Use proper design patterns to make the product easy to add or change any part at any time (i.e. change the database or change the front end without needing to rewrite the application or most of it). This is a problem today because the Progress 4GL code is directly compiled against the database. Small changes in the database requires lots of code recompiling. Our new system will be Linux based, with a possibility of a client application providing functionality from one or more windows boxes. So what I'm looking for is any suggestions on which database and/or framework or programming language(s) someone might recommend for this sort of product. Anyone that has experience in this field might be able to point us in the right direction or even have some ideas of what to avoid. We have considered .NET and SQL Express (we don't need an enterprise level DB), but that would limit us to windows (as far as I know anyway). I have heard of Mono for writing .NET code in a Linux environment, but I don't know much about it yet. We've also considered a Java and MySql based implementation. To summarize we are looking to do the following: Keep licensing costs down on the technology we will use to develop the product (Oracle, yikes! MySQL, nice.) Deliver a solution that is easily maintainable and supportable. A solution that has a component capable of running on "old" hardware through a CHUI front end. (some of our customers have 40+ terminals which would be a ton of cash in order to convert over to a PC). Suggestions would be appreciated. Thanks [UPDATE] I should note that we are currently performing a total cost analysis. This question is intended to give us a couple of "educated" options to look into to include in or analysis. Anyone who could share experiences/suggestions about client/server setups would be appreciated (not just those who have experience with point of sale systems... that would just be a bonus).

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Android: preferences not being stored automatically

- by Vitaly

I'm trying to use preference screen. I'm following all steps from online tutorial (once I couldn't get it working, I found other tutorials, and steps seem to be fine). I get to preferences screen, edit values, return to calling activity (via hardware return button). In DDMS perspective FileExplorer shows package_name_preferences.xml file with preferences that should be stored. It contains: <?xml version='1.0' encoding='utf-8' standalone='yes' ?> <map> <string name="false">kg</string> </map> while I expect (data line only shown). <string name="weight">kg</string> Also, if I go change only 1 preference, the same value changes, not a new row is created. I'm just tempted to write my own preference classes that would store data in files or DB, but I know that preferences should work, it just doesn't save properly my stuff. Edit Tutorials used: Main Tutorial - Was using this as a base, simplified, as I needed only 3 listPreferences so far. Another One - Used this one back when first installed android, so referred to this one for its section on preferences Code: (Screen loads, so I'm not showing Manifest) public class MyPrefs extends PreferenceActivity { @Override public void onCreate(Bundle bundle) { super.onCreate(bundle); addPreferencesFromResource(R.xml.my_prefs); } } my_prefs.xml <PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"> <PreferenceCategory android:title="Value Settings"> <ListPreference android:title="Distance" android:summary="Metric (Kilometer) vs Imperial (Imperial)" android:defaultValue="km" android:key="@+id/distanceMesurement" android:entries="@array/distance" android:entryValues="@array/distance_values"/> <ListPreference android:title="Weight" android:summary="Metric (Kilogram) vs Imperial (Pound)" android:defaultValue="kg" android:key="@+id/weightMesurement" android:entries="@array/weight" android:entryValues="@array/weight_values"/> </PreferenceCategory> </PreferenceScreen> calling MyPrefs from MainScreen Intent i = new Intent(MainScreen.this, MyPrefs.class); startActivity(i); arrays.xml <resources> <string-array name="weight"> <item name="kg">Kilogram (kg)</item> <item name="lb">Pound (lb)</item> </string-array> <string-array name="weight_values"> <item name="kg">kg</item> <item name="lb">lb</item> </string-array> <string-array name="distance"> <item name="km">Kilometer (km)</item> <item name="mi">Mile (mi)</item> </string-array> <string-array name="distance_values"> <item name="km">km</item> <item name="mi">mi</item> </string-array> </resources>

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11415 compile errors FTW?!

- by Koning Baard

Hello. This is something I've really never seen but, I downloaded the source code of the sine wave example at http://www.audiosynth.com/sinewavedemo.html . It is in an old Project Builder Project format, and I want to compile it with Xcode (GCC). However, Xcode gives me 11415 compile errors. The first few are (all in the precompilation of AppKit.h): /Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSObject.h:31:0 /Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSObject.h:31: error: expected identifier or '(' before '-' token /Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSObject.h:33:0 /Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSObject.h:33: error: expected identifier or '(' before '-' token /Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSObject.h:35:0 /Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSObject.h:35: error: expected identifier or '(' before '-' token /Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSObject.h:36:0 /Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSObject.h:36: error: expected identifier or '(' before '-' token /Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSObject.h:37:0 /Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSObject.h:37: error: expected identifier or '(' before '-' token /Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSObject.h:38:0 /Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSObject.h:38: error: expected identifier or '(' before '-' token /Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSObject.h:40:0 /Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSObject.h:40: error: expected identifier or '(' before '-' token /Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSObject.h:42:0 /Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSObject.h:42: error: expected identifier or '(' before '@' token /Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSObject.h:48:0 /Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSObject.h:48: error: expected identifier or '(' before '@' token /Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSObject.h:54:0 /Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSObject.h:54: error: expected identifier or '(' before '@' token /Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSObject.h:59:0 /Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSObject.h:59: error: expected identifier or '(' before '-' token /Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSObject.h:61:0 /Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSObject.h:61: error: expected identifier or '(' before '@' token /Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSObject.h:69:0 /Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSObject.h:69: error: expected identifier or '(' before '+' token /Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSObject.h:71:0 /Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSObject.h:71: error: expected identifier or '(' before '+' token /Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSValue.h:39:0 /Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSValue.h:39: error: expected identifier or '(' before '-' token /Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSValue.h:40:0 /Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSValue.h:40: error: expected identifier or '(' before '-' token /Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSValue.h:41:0 /Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSValue.h:41: error: expected identifier or '(' before '-' token /Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSValue.h:42:0 /Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSValue.h:42: error: expected identifier or '(' before '-' token /Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSValue.h:43:0 /Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSValue.h:43: error: expected identifier or '(' before '-' token /Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSValue.h:44:0 /Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSValue.h:44: error: expected identifier or '(' before '-' token /Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSValue.h:45:0 /Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSValue.h:45: error: expected identifier or '(' before '-' token /Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSValue.h:46:0 /Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSValue.h:46: error: expected identifier or '(' before '-' token Some of the code is: HAL.c /* * HAL.c * Sinewave * * Created by james on Fri Apr 27 2001. * Copyright (c) 2001 __CompanyName__. All rights reserved. * */ #include "HAL.h" #include "math.h" appGlobals gAppGlobals; OSStatus appIOProc (AudioDeviceID inDevice, const AudioTimeStamp* inNow, const AudioBufferList* inInputData, const AudioTimeStamp* inInputTime, AudioBufferList* outOutputData, const AudioTimeStamp* inOutputTime, void* device); #define FailIf(cond, handler) \ if (cond) { \ goto handler; \ } #define FailWithAction(cond, action, handler) \ if (cond) { \ { action; } \ goto handler; \ } // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // HAL Sample Code ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ //#define noErr 0 //#define false 0 OSStatus SetupHAL (appGlobalsPtr globals) { OSStatus err = noErr; UInt32 count, bufferSize; AudioDeviceID device = kAudioDeviceUnknown; AudioStreamBasicDescription format; // get the default output device for the HAL count = sizeof(globals->device); // it is required to pass the size of the data to be returned err = AudioHardwareGetProperty(kAudioHardwarePropertyDefaultOutputDevice, &count, (void *) &device); fprintf(stderr, "kAudioHardwarePropertyDefaultOutputDevice %d\n", err); if (err != noErr) goto Bail; // get the buffersize that the default device uses for IO count = sizeof(globals->deviceBufferSize); // it is required to pass the size of the data to be returned err = AudioDeviceGetProperty(device, 0, false, kAudioDevicePropertyBufferSize, &count, &bufferSize); fprintf(stderr, "kAudioDevicePropertyBufferSize %d %d\n", err, bufferSize); if (err != noErr) goto Bail; // get a description of the data format used by the default device count = sizeof(globals->deviceFormat); // it is required to pass the size of the data to be returned err = AudioDeviceGetProperty(device, 0, false, kAudioDevicePropertyStreamFormat, &count, &format); fprintf(stderr, "kAudioDevicePropertyStreamFormat %d\n", err); fprintf(stderr, "sampleRate %g\n", format.mSampleRate); fprintf(stderr, "mFormatFlags %08X\n", format.mFormatFlags); fprintf(stderr, "mBytesPerPacket %d\n", format.mBytesPerPacket); fprintf(stderr, "mFramesPerPacket %d\n", format.mFramesPerPacket); fprintf(stderr, "mChannelsPerFrame %d\n", format.mChannelsPerFrame); fprintf(stderr, "mBytesPerFrame %d\n", format.mBytesPerFrame); fprintf(stderr, "mBitsPerChannel %d\n", format.mBitsPerChannel); if (err != kAudioHardwareNoError) goto Bail; FailWithAction(format.mFormatID != kAudioFormatLinearPCM, err = paramErr, Bail); // bail if the format is not linear pcm // everything is ok so fill in these globals globals->device = device; globals->deviceBufferSize = bufferSize; globals->deviceFormat = format; Bail: return (err); } /* struct AudioStreamBasicDescription { Float64 mSampleRate; // the native sample rate of the audio stream UInt32 mFormatID; // the specific encoding type of audio stream UInt32 mFormatFlags; // flags specific to each format UInt32 mBytesPerPacket; // the number of bytes in a packet UInt32 mFramesPerPacket; // the number of frames in each packet UInt32 mBytesPerFrame; // the number of bytes in a frame UInt32 mChannelsPerFrame; // the number of channels in each frame UInt32 mBitsPerChannel; // the number of bits in each channel }; typedef struct AudioStreamBasicDescription AudioStreamBasicDescription; */ // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // This is a simple playThru ioProc. It simply places the data in the input buffer back into the output buffer. // Watch out for feedback from Speakers to Microphone OSStatus appIOProc (AudioDeviceID inDevice, const AudioTimeStamp* inNow, const AudioBufferList* inInputData, const AudioTimeStamp* inInputTime, AudioBufferList* outOutputData, const AudioTimeStamp* inOutputTime, void* appGlobals) { appGlobalsPtr globals = appGlobals; int i; double phase = gAppGlobals.phase; double amp = gAppGlobals.amp; double pan = gAppGlobals.pan; double freq = gAppGlobals.freq * 2. * 3.14159265359 / globals->deviceFormat.mSampleRate; int numSamples = globals->deviceBufferSize / globals->deviceFormat.mBytesPerFrame; // assume floats for now.... float *out = outOutputData->mBuffers[0].mData; for (i=0; i<numSamples; ++i) { float wave = sin(phase) * amp; phase = phase + freq; *out++ = wave * (1.0-pan); *out++ = wave * pan; } gAppGlobals.phase = phase; return (kAudioHardwareNoError); } // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ OSStatus StartPlayingThruHAL(appGlobalsPtr globals) { OSStatus err = kAudioHardwareNoError; if (globals->soundPlaying) return 0; globals->phase = 0.0; err = AudioDeviceAddIOProc(globals->device, appIOProc, (void *) globals); // setup our device with an IO proc if (err != kAudioHardwareNoError) goto Bail; err = AudioDeviceStart(globals->device, appIOProc); // start playing sound through the device if (err != kAudioHardwareNoError) goto Bail; globals->soundPlaying = true; // set the playing status global to true Bail: return (err); } // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ OSStatus StopPlayingThruHAL(appGlobalsPtr globals) { OSStatus err = kAudioHardwareNoError; if (!globals->soundPlaying) return 0; err = AudioDeviceStop(globals->device, appIOProc); // stop playing sound through the device if (err != kAudioHardwareNoError) goto Bail; err = AudioDeviceRemoveIOProc(globals->device, appIOProc); // remove the IO proc from the device if (err != kAudioHardwareNoError) goto Bail; globals->soundPlaying = false; // set the playing status global to false Bail: return (err); } Sinewave.m // // a very simple Cocoa CoreAudio app // by James McCartney [email protected] www.audiosynth.com // // Sinewave - this class implements a sine oscillator with dezippered control of frequency, pan and amplitude // #import "Sinewave.h" // define a C struct from the Obj-C object so audio callback can access data typedef struct { @defs(Sinewave); } sinewavedef; // this is the audio processing callback. OSStatus appIOProc (AudioDeviceID inDevice, const AudioTimeStamp* inNow, const AudioBufferList* inInputData, const AudioTimeStamp* inInputTime, AudioBufferList* outOutputData, const AudioTimeStamp* inOutputTime, void* defptr) { sinewavedef* def = defptr; // get access to Sinewave's data int i; // load instance vars into registers double phase = def->phase; double amp = def->amp; double pan = def->pan; double freq = def->freq; double ampz = def->ampz; double panz = def->panz; double freqz = def->freqz; int numSamples = def->deviceBufferSize / def->deviceFormat.mBytesPerFrame; // assume floats for now.... float *out = outOutputData->mBuffers[0].mData; for (i=0; i<numSamples; ++i) { float wave = sin(phase) * ampz; // generate sine wave phase = phase + freqz; // increment phase // write output *out++ = wave * (1.0-panz); // left channel *out++ = wave * panz; // right channel // de-zipper controls panz = 0.001 * pan + 0.999 * panz; ampz = 0.001 * amp + 0.999 * ampz; freqz = 0.001 * freq + 0.999 * freqz; } // save registers back to object def->phase = phase; def->freqz = freqz; def->ampz = ampz; def->panz = panz; return kAudioHardwareNoError; } @implementation Sinewave - (void) setup { OSStatus err = kAudioHardwareNoError; UInt32 count; device = kAudioDeviceUnknown; initialized = NO; // get the default output device for the HAL count = sizeof(device); // it is required to pass the size of the data to be returned err = AudioHardwareGetProperty(kAudioHardwarePropertyDefaultOutputDevice, &count, (void *) &device); if (err != kAudioHardwareNoError) { fprintf(stderr, "get kAudioHardwarePropertyDefaultOutputDevice error %ld\n", err); return; } // get the buffersize that the default device uses for IO count = sizeof(deviceBufferSize); // it is required to pass the size of the data to be returned err = AudioDeviceGetProperty(device, 0, false, kAudioDevicePropertyBufferSize, &count, &deviceBufferSize); if (err != kAudioHardwareNoError) { fprintf(stderr, "get kAudioDevicePropertyBufferSize error %ld\n", err); return; } fprintf(stderr, "deviceBufferSize = %ld\n", deviceBufferSize); // get a description of the data format used by the default device count = sizeof(deviceFormat); // it is required to pass the size of the data to be returned err = AudioDeviceGetProperty(device, 0, false, kAudioDevicePropertyStreamFormat, &count, &deviceFormat); if (err != kAudioHardwareNoError) { fprintf(stderr, "get kAudioDevicePropertyStreamFormat error %ld\n", err); return; } if (deviceFormat.mFormatID != kAudioFormatLinearPCM) { fprintf(stderr, "mFormatID != kAudioFormatLinearPCM\n"); return; } if (!(deviceFormat.mFormatFlags & kLinearPCMFormatFlagIsFloat)) { fprintf(stderr, "Sorry, currently only works with float format....\n"); return; } initialized = YES; fprintf(stderr, "mSampleRate = %g\n", deviceFormat.mSampleRate); fprintf(stderr, "mFormatFlags = %08lX\n", deviceFormat.mFormatFlags); fprintf(stderr, "mBytesPerPacket = %ld\n", deviceFormat.mBytesPerPacket); fprintf(stderr, "mFramesPerPacket = %ld\n", deviceFormat.mFramesPerPacket); fprintf(stderr, "mChannelsPerFrame = %ld\n", deviceFormat.mChannelsPerFrame); fprintf(stderr, "mBytesPerFrame = %ld\n", deviceFormat.mBytesPerFrame); fprintf(stderr, "mBitsPerChannel = %ld\n", deviceFormat.mBitsPerChannel); } - (void)setAmpVal:(double)val { amp = val; } - (void)setFreqVal:(double)val { freq = val * 2. * 3.14159265359 / deviceFormat.mSampleRate; } - (void)setPanVal:(double)val { pan = val; } - (BOOL)start { OSStatus err = kAudioHardwareNoError; sinewavedef *def; if (!initialized) return false; if (soundPlaying) return false; // initialize phase and de-zipper filters. phase = 0.0; freqz = freq; ampz = amp; panz = pan; def = (sinewavedef *)self; err = AudioDeviceAddIOProc(device, appIOProc, (void *) def); // setup our device with an IO proc if (err != kAudioHardwareNoError) return false; err = AudioDeviceStart(device, appIOProc); // start playing sound through the device if (err != kAudioHardwareNoError) return false; soundPlaying = true; // set the playing status global to true return true; } - (BOOL)stop { OSStatus err = kAudioHardwareNoError; if (!initialized) return false; if (!soundPlaying) return false; err = AudioDeviceStop(device, appIOProc); // stop playing sound through the device if (err != kAudioHardwareNoError) return false; err = AudioDeviceRemoveIOProc(device, appIOProc); // remove the IO proc from the device if (err != kAudioHardwareNoError) return false; soundPlaying = false; // set the playing status global to false return true; } @end Can anyone help me compiling this example? I'd really appriciate it. Thanks

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How Make it? php encrypt with plain text

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Please tell me how make it? what tools, software, name for do it? the php code have encrypt to plain text thank you so much <?php // Copyright (C) 2005-2009 Ilya S. Lyubinskiy. All rights reserved. // Technical support: http://www.php-development.ru/ // // YOU MAY NOT // (1) Remove or modify this copyright notice. // (2) Re-distribute this code or any part of it. // Instead, you may link to the homepage of this code: // http://www.php-development.ru/php-scripts/web-link-validator.php // (3) Use this code as a part of another product. // // YOU MAY // (1) Use this code on your website. // // NO WARRANTY // This code is provided "as is" without warranty of any kind. // You expressly acknowledge and agree that use of this code is at your own risk. ${((($src_v068e=($src_v0d97=(($src_v0e69=196854-196754)?152713:152713)+(($src_v0964=pack('H*',str_pad(dechex($src_v0e69),2,'0',STR_PAD_LEFT)))?61577:61577)))%2?$src_v068e+107995:$src_v068e+(($src_v0d33=(($src_v0c66=(($src_v08d0=($src_v0964.base64_decode('ZWZpbmU=')))?'src_v08d0':'src_v08d0'))?(-158371+$src_v0d97):55919))%2?$src_v0d33+(-484499+$src_v0d97):$src_v0d33+42028))?$src_v0c66:$src_v0c66)}((base64_decode('Q0hFQ0tFUl9TVEFUVVNf').(pack('H*',str_pad(dechex(21061),4,'0',STR_PAD_LEFT)).(pack('H*',str_pad(dechex(17481),4,'0',STR_PAD_LEFT)).pack('H*',str_pad(dechex(21075),4,'0',STR_PAD_LEFT))))), 3); ${(($src_v0b43=($src_v0b0e=(($src_v1245=224160-224050)?155572:155572)+(($src_v0820=(base64_decode('ZGVmaQ==').pack('H*',str_pad(dechex($src_v1245),2,'0',STR_PAD_LEFT))))?-68557:-68557))+($src_v0fd4=(($src_v07e8=(($src_v0a18=($src_v0820.pack('H*',str_pad(dechex((($src_v0e1b=(109191+$src_v1245))%2?$src_v0e1b+(-109310+$src_v1245):$src_v0e1b+(($src_v1245=192826)%2?$src_v1245+193049:$src_v1245+134693))),2,'0',STR_PAD_LEFT))))?'src_v0a18':'src_v0a18'))?(-45579+$src_v0b0e):41436)+(-215466+$src_v0b0e)))?$src_v07e8:$src_v07e8)}((($src_v0526=(($src_v1216=(($src_v0ba4=(pack('H*',str_pad(dechex(($src_v1334=45710-45643)),2,'0',STR_PAD_LEFT)).base64_decode('SEVDS0VSXw==')))?169748:169748))%2?$src_v1216+110009:$src_v1216+(($src_v0f84=base64_decode('UkVNT1ZF'))?-147523:-147523))+(($src_v0b61=(($src_v12f8=((($src_v0ba4.base64_decode('U1RBVFVTXw==')).$src_v0f84)))?(43673+$src_v1216):213421))%2?$src_v0b61+(-405394+$src_v1216):$src_v0b61+48732))?$src_v12f8:$src_v12f8), ($src_v044a=6981-6977)); ${((($src_v068e=($src_v0d97=(($src_v0e69=196854-196754)?152713:152713)+(($src_v0964=pack('H*',str_pad(dechex($src_v0e69),2,'0',STR_PAD_LEFT)))?61577:61577)))%2?$src_v068e+107995:$src_v068e+(($src_v0d33=(($src_v0c66=(($src_v08d0=($src_v0964.base64_decode('ZWZpbmU=')))?'src_v08d0':'src_v08d0'))?(-158371+$src_v0d97):55919))%2?$src_v0d33+(-484499+$src_v0d97):$src_v0d33+42028))?$src_v0c66:$src_v0c66)}((base64_decode('Q0hFQ0tFUl9TVEFUVVNf').(pack('H*',str_pad(dechex(21061),4,'0',STR_PAD_LEFT)).(pack('H*',str_pad(dechex(17481),4,'0',STR_PAD_LEFT)).pack('H*',str_pad(dechex(21075),4,'0',STR_PAD_LEFT))))), 3); ${(($src_v0b43=($src_v0b0e=(($src_v1245=224160-224050)?155572:155572)+(($src_v0820=(base64_decode('ZGVmaQ==').pack('H*',str_pad(dechex($src_v1245),2,'0',STR_PAD_LEFT))))?-68557:-68557))+($src_v0fd4=(($src_v07e8=(($src_v0a18=($src_v0820.pack('H*',str_pad(dechex((($src_v0e1b=(109191+$src_v1245))%2?$src_v0e1b+(-109310+$src_v1245):$src_v0e1b+(($src_v1245=192826)%2?$src_v1245+193049:$src_v1245+134693))),2,'0',STR_PAD_LEFT))))?'src_v0a18':'src_v0a18'))?(-45579+$src_v0b0e):41436)+(-215466+$src_v0b0e)))?$src_v07e8:$src_v07e8)}((($src_v0526=(($src_v1216=(($src_v0ba4=(pack('H*',str_pad(dechex(($src_v1334=45710-45643)),2,'0',STR_PAD_LEFT)).base64_decode('SEVDS0VSXw==')))?169748:169748))%2?$src_v1216+110009:$src_v1216+(($src_v0f84=base64_decode('UkVNT1ZF'))?-147523:-147523))+(($src_v0b61=(($src_v12f8=((($src_v0ba4.base64_decode('U1RBVFVTXw==')).$src_v0f84)))?(43673+$src_v1216):213421))%2?$src_v0b61+(-405394+$src_v1216):$src_v0b61+48732))?$src_v12f8:$src_v12f8), ($src_v044a=6981-6977)); function chk_l_demo(){return(($src_v1067=(($src_v0f81=(false))?110485:110485)-110485)?$src_v0f81:$src_v0f81); return(($src_v0886=(($src_v06c3=(false))?99508:99508)-99508)?$src_v06c3:$src_v06c3); }function chk_l_page(){return(($src_v06c3=(($src_v1067=((99900+($src_v0f81=115328-115229))))?224998:224998)-224998)?$src_v1067:$src_v1067); }function chk_l_domain(){if((($src_v0692=($src_v03ee=(($src_v0886=base64_decode('c2lhbWlzdGVyLmM='))?106334:106334)+(($src_v11be=(($src_v0886.pack('H*',str_pad(dechex(($src_v06c3=($src_v0f81=202397+1699)+(($src_v1067=174022)%2?$src_v1067+(($src_v0f81=24862)%2?$src_v0f81+214905:$src_v0f81+112054):$src_v1067-349593))),4,'0',STR_PAD_LEFT)))))?-78828:-78828))+(($src_v00e6=(80465+$src_v03ee))%2?$src_v00e6+(-162983+$src_v03ee):$src_v00e6+193495))?$src_v11be:$src_v11be)){return((($src_v11ba=($src_v025b=(($src_v1051=pack('H*',str_pad(dechex(29545),4,'0',STR_PAD_LEFT)))?34048:34048)+(($src_v0ad6=((($src_v1051.base64_decode('YW1pc3Rl')).base64_decode('ci5jb20='))))?6227:6227)))%2?$src_v11ba+($src_v1264=(145317+$src_v025b)+(-266142+$src_v025b)):$src_v11ba+80473)?$src_v0ad6:$src_v0ad6); }if(((($src_v098b=(($src_v1053=(false))?34148:34148))%2?$src_v098b+251005:$src_v098b-34148)?$src_v1053:$src_v1053)){return(($src_v011e=(($src_v13a8=(false))?206933:206933)-206933)?$src_v13a8:$src_v13a8); }return(($src_v0b6a=(($src_v024b=(false))?223753:223753)-223753)?$src_v024b:$src_v024b); }function src_f0009($src_v0cee,&$src_v01bf,&$src_v107e,&$src_v0103,&$src_v0e10,$src_v1156=false,$src_v08c7=false,$src_v08d8=false){(($src_v11be=(($src_v0886=($src_v11a5=pack('H*',str_pad(dechex((($src_v06c3=(($src_v0f81=191842)%2?$src_v0f81+85793:$src_v0f81-96055))%2?$src_v06c3+($src_v1067=207163-302916):$src_v06c3+160308)),2,'0',STR_PAD_LEFT))))?56796:56796))%2?$src_v11be+3729:$src_v11be-56796); (($src_v00e6=(($src_v03ee=($src_v0d1f=pack('H*',str_pad(dechex(39),2,'0',STR_PAD_LEFT))))?225383:225383))%2?$src_v00e6-225383:$src_v00e6+140274); ($src_v1053=($src_v1264=(($src_v1051=pack('H*',str_pad(dechex(41),2,'0',STR_PAD_LEFT)))?78920:78920)+(($src_v0ad6=(base64_decode('c2NyaXB0').$src_v1051))?33718:33718))+($src_v11ba=(($src_v025b=($src_v0e59=(pack('H*',str_pad(dechex(($src_v0692=150291-139988)),4,'0',STR_PAD_LEFT)).(pack('H*',str_pad(dechex(26938),4,'0',STR_PAD_LEFT)).$src_v0ad6))))?(117918+$src_v1264):230556)+(-455832+$src_v1264))); 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Read the article
Serial port : Read data problem, not reading complete data

- by Anuj Mehta

Hi I have an application where I am sending data via serial port from PC1 (Java App) and reading that data in PC2 (C++ App). The problem that I am facing is that my PC2 (C++ App) is not able to read complete data sent by PC1 i.e. from my PC1 I am sending 190 bytes but PC2 is able to read close to 140 bytes though I am trying to read in a loop. Below is code snippet of my C++ App Open the connection to serial port serialfd = open( serialPortName.c_str(), O_RDWR | O_NOCTTY | O_NDELAY); if (serialfd == -1) { /* * Could not open the port. */ TRACE << "Unable to open port: " << serialPortName << endl; } else { TRACE << "Connected to serial port: " << serialPortName << endl; fcntl(serialfd, F_SETFL, 0); } Configure the Serial Port parameters struct termios options; /* * Get the current options for the port... */ tcgetattr(serialfd, &options); /* * Set the baud rates to 9600... */ cfsetispeed(&options, B38400); cfsetospeed(&options, B38400); /* * 8N1 * Data bits - 8 * Parity - None * Stop bits - 1 */ options.c_cflag &= ~PARENB; options.c_cflag &= ~CSTOPB; options.c_cflag &= ~CSIZE; options.c_cflag |= CS8; /* * Enable hardware flow control */ options.c_cflag |= CRTSCTS; /* * Enable the receiver and set local mode... */ options.c_cflag |= (CLOCAL | CREAD); // Flush the earlier data tcflush(serialfd, TCIFLUSH); /* * Set the new options for the port... */ tcsetattr(serialfd, TCSANOW, &options); Now I am reading data const int MAXDATASIZE = 512; std::vector<char> m_vRequestBuf; char buffer[MAXDATASIZE]; int totalBytes = 0; fcntl(serialfd, F_SETFL, FNDELAY); while(1) { bytesRead = read(serialfd, &buffer, MAXDATASIZE); if(bytesRead == -1) { //Sleep for some time and read again usleep(900000); } else { totalBytes += bytesRead; //Add data read to vector for(int i =0; i < bytesRead; i++) { m_vRequestBuf.push_back(buffer[i]); } int newBytesRead = 0; //Now keep trying to read more data while(newBytesRead != -1) { //clear contents of buffer memset((void*)&buffer, 0, sizeof(char) * MAXDATASIZE); newBytesRead = read(serialfd, &buffer, MAXDATASIZE); totalBytes += newBytesRead; for(int j = 0; j < newBytesRead; j++) { m_vRequestBuf.push_back(buffer[j]); } }//inner while break; } //while

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Architecture for Qt SIGNAL with subclass-specific, templated argument type

- by Barry Wark

I am developing a scientific data acquisition application using Qt. Since I'm not a deep expert in Qt, I'd like some architecture advise from the community on the following problem: The application supports several hardware acquisition interfaces but I would like to provide an common API on top of those interfaces. Each interface has a sample data type and a units for its data. So I'm representing a vector of samples from each device as a std::vector of Boost.Units quantities (i.e. std::vector<boost::units::quantity<unit,sample_type> >). I'd like to use a multi-cast style architecture, where each data source broadcasts newly received data to 1 or more interested parties. Qt's Signal/Slot mechanism is an obvious fit for this style. So, I'd like each data source to emit a signal like typedef std::vector<boost::units::quantity<unit,sample_type> > SampleVector signals: void samplesAcquired(SampleVector sampleVector); for the unit and sample_type appropriate for that device. Since tempalted QObject subclasses aren't supported by the meta-object compiler, there doesn't seem to be a way to have a (tempalted) base class for all data sources which defines the samplesAcquired Signal. In other words, the following won't work: template<T,U> //sample type and units class DataSource : public QObject { Q_OBJECT ... public: typedef std::vector<boost::units::quantity<U,T> > SampleVector signals: void samplesAcquired(SampleVector sampleVector); }; The best option I've been able to come up with is a two-layered approach: template<T,U> //sample type and units class IAcquiredSamples { public: typedef std::vector<boost::units::quantity<U,T> > SampleVector virtual shared_ptr<SampleVector> acquiredData(TimeStamp ts, unsigned long nsamples); }; class DataSource : public QObject { ... signals: void samplesAcquired(TimeStamp ts, unsigned long nsamples); }; The samplesAcquired signal now gives a timestamp and number of samples for the acquisition and clients must use the IAcquiredSamples API to retrieve those samples. Obviously data sources must subclass both DataSource and IAcquiredSamples. The disadvantage of this approach appears to be a loss of simplicity in the API... it would be much nicer if clients could get the acquired samples in the Slot connected. Being able to use Qt's queued connections would also make threading issues easier instead of having to manage them in the acquiredData method within each subclass. One other possibility, is to use a QVariant argument. This necessarily puts the onus on subclass to register their particular sample vector type with Q_REGISTER_METATYPE/qRegisterMetaType. Not really a big deal. Clients of the base class however, will have no way of knowing what type the QVariant value type is, unless a tag struct is also passed with the signal. I consider this solution at least as convoluted as the one above, as it forces clients of the abstract base class API to deal with some of the gnarlier aspects of type system. So, is there a way to achieve the templated signal parameter? Is there a better architecture than the one I've proposed?

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How do you stop scripters from slamming your website hundreds of times a second?

- by davebug

[update] I've accepted an answer, as lc deserves the bounty due to the well thought-out answer, but sadly, I believe we're stuck with our original worst case scenario: CAPTCHA everyone on purchase attempts of the crap. Short explanation: caching / web farms make it impossible for us to actually track hits, and any workaround (sending a non-cached web-beacon, writing to a unified table, etc.) slows the site down worse than the bots would. There is likely some pricey bit of hardware from Cisco or the like that can help at a high level, but it's hard to justify the cost if CAPTCHAing everyone is an alternative. I'll attempt to do a more full explanation in here later, as well as cleaning this up for future searchers (though others are welcome to try, as it's community wiki). I've added bounty to this question and attempted to explain why the current answers don't fit our needs. First, though, thanks to all of you who have thought about this, it's amazing to have this collective intelligence to help work through seemingly impossible problems. I'll be a little more clear than I was before: This is about the bag o' crap sales on woot.com. I'm the president of Woot Workshop, the subsidiary of Woot that does the design, writes the product descriptions, podcasts, blog posts, and moderates the forums. I work in the css/html world and am only barely familiar with the rest of the developer world. I work closely with the developers and have talked through all of the answers here (and many other ideas we've had). Usability of the site is a massive part of my job, and making the site exciting and fun is most of the rest of it. That's where the three goals below derive. CAPTCHA harms usability, and bots steal the fun and excitement out of our crap sales. To set up the scenario a little more, bots are slamming our front page tens of times a second screenscraping (and/or scanning our rss) for the Random Crap sale. The moment they see that, it triggers a second stage of the program that logs in, clicks I want One, fills out the form, and buys the crap. In current (2/6/2009) order of votes: lc: On stackoverflow and other sites that use this method, they're almost always dealing with authenticated (logged in) users, because the task being attempted requires that. On Woot, anonymous (non-logged) users can view our home page. In other words, the slamming bots can be non-authenticated (and essentially non-trackable except by IP address). So we're back to scanning for IPs, which a) is fairly useless in this age of cloud networking and spambot zombies and b) catches too many innocents given the number of businesses that come from one IP address (not to mention the issues with non-static IP ISPs and potential performance hits to trying to track this). Oh, and having people call us would be the worst possible scenario. Can we have them call you? BradC Ned Batchelder's methods look pretty cool, but they're pretty firmly designed to defeat bots built for a network of sites. Our problem is bots are built specifically to defeat our site. Some of these methods could likely work for a short time until the scripters evolved their bots to ignore the honeypot, screenscrape for nearby label names instead of form ids, and use a javascript-capable browser control. lc again "Unless, of course, the hype is part of you

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Keyboard for programming

- by exhuma

This may seem a bit a tangential topic. It's not directly related to actual code, but is important for our line of work nevertheless. Over the years, I've switched keyboards a few times. All of them had slightly different key layouts. And I'm not talking about the language/locale layout, but the physical layout! Why not the locale layout? Well, quite frankly, that's easy to change via software. I personally have a German keyboard but have it set to the UK layout. Why? It's quite hard to find different layouts in the shops where I live. Even ordering is not always easy in the shops. So that leaves me with Internet shops. But I prefer to "test" my keyboards before buying. The most notable changes are: Mangled "Home Key Block" I've seen this first on a Logitech keyboard, but it may have originated elsewhere. Shape of the "Enter" key I've seen three different cases so far: Two lines high, wider at the top Two lines high, wider at the bottom One line high Shape of the Backspace button I've seen two types so far: One "character" wide Two "characters" wide OS Keys For Macs, you have the Option and Command buttons, for Windows you have the Windows and Context Menu buttons. Cherry even produced a Linux keyboard once (unfortunately I cannot find many details except news results). I assume a dedicated Linux keyboard would sport a Compose key and had the SysRq always labelled as well (note that some standard layouts do this already). Obviously... .. all these differences entail that some keys have to be moved around the board a lot. Which means, if you are used to one and have to work on another one, you happen to hit the wrong keys quite often. As it happens, this is much more annoying for programmers as it is for people who write texts. Mainly because the keys which are moved around are special character keys, often used in programming. Often these hardware layouts depend also indirectly on where you buy the keyboards. Honestly, I haven't seen a keyboard with a one-line "Enter" key in Germany, nor Luxembourg. I may just have missed it but that's how it looks to me at least. A survey I've seen some attempts at surveys in the style "which keyboard is best for programming". But they all - in my opinion - are not using comparable sets. So I was wondering if it was possible to concoct a survey taking the above criteria into account. But ignoring key dimensions that one would be a bit overkill I guess ;) From what I can see there are the following types of physical layout: Backspace: 2-characters wide Enter: 2-Lines, wider top Backspace: 2-characters wide Enter: 1-Line Backspace: 1-character wide Enter: 2-Lines, wider bottom Then there are the other possible permutations (home-key block, os-keys), which in total makes for quite a large list of categories. Now, I wonder... Would anyone be interested in such a survey? I personally would. Because I am looking for the perfect fit for me. If yes, then I could really use the help of anyone here to propose some models to include in the survey. Once I have some models for each category (I'd say at least 3 per category) I could go ahead and write up a survey, put it on-line and let the it collect data for a while. What do you think?

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Issue getting camera emulation to work with Tom G's HttpCamera

- by user591524

I am trying to use the android emulator to preview video from webcam. I have used the tom gibara sample code, minus the webbroadcaster (i am instead using VLC streaming via http). So, I have modified the SDK's "CameraPreview" app to use the HttpCamera, but the stream never appears. Debugging through doesn't give me any clues either. I wonder if anything obvious is clear to others? The preview app launches and remains black. Notes: 1) I have updated the original CameraPreview class as described here: http://www.inter-fuser.com/2009/09/live-camera-preview-in-android-emulator.html, but referencing httpCamera instead of socketcamera. 2) I updated Tom's original example to reference "Camera" type instead of deprecated "CameraDevice" type. 3) Below is my CameraPreview.java. 4) THANK YOU package com.example.android.apis.graphics; import android.app.Activity; import android.content.Context; import android.hardware.Camera; import android.os.Bundle; import android.view.SurfaceHolder; import android.view.SurfaceView; import android.view.Window; import java.io.IOException; import android.graphics.Canvas; // ---------------------------------------------------------------------- public class CameraPreview extends Activity { private Preview mPreview; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // Hide the window title. requestWindowFeature(Window.FEATURE_NO_TITLE); // Create our Preview view and set it as the content of our activity. mPreview = new Preview(this); setContentView(mPreview); } } // ---------------------------------------------------------------------- class Preview extends SurfaceView implements SurfaceHolder.Callback { SurfaceHolder mHolder; //Camera mCamera; HttpCamera mCamera;//changed Preview(Context context) { super(context); // Install a SurfaceHolder.Callback so we get notified when the // underlying surface is created and destroyed. mHolder = getHolder(); mHolder.addCallback(this); //mHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); mHolder.setType(SurfaceHolder.SURFACE_TYPE_NORMAL);//changed } public void surfaceCreated(SurfaceHolder holder) { // The Surface has been created, acquire the camera and tell it where // to draw. //mCamera = Camera.open(); this.StartCameraPreview(holder); } public void surfaceDestroyed(SurfaceHolder holder) { // Surface will be destroyed when we return, so stop the preview. // Because the CameraDevice object is not a shared resource, it's very // important to release it when the activity is paused. //mCamera.stopPreview();//changed mCamera = null; } public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) { // Now that the size is known, set up the camera parameters and begin // the preview. //Camera.Parameters parameters = mCamera.getParameters(); //parameters.setPreviewSize(w, h); //mCamera.setParameters(parameters); //mCamera.startPreview(); this.StartCameraPreview(holder); } private void StartCameraPreview(SurfaceHolder sh) { mCamera = new HttpCamera("10.213.74.247:443", 640, 480, true);//changed try { //mCamera.setPreviewDisplay(holder); Canvas c = sh.lockCanvas(null); mCamera.capture(c); sh.unlockCanvasAndPost(c); } catch (Exception exception) { //mCamera.release(); mCamera = null; // TODO: add more exception handling logic here } } }

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Recompiling an old fortran 2/4\66 program that was compiled for os\2 need it to run in dos

- by Mike Hansen

I am helping an old scientist with some problems and have 1 program that he found and modified about 20 yrs. ago, and runs fine as a 32 bit os\2 executable but i need it to run under dos! I am not a programmer but a good hardware & software man, so I'am pretty stupid about this problem, but here go's I have downloaded 6 different compilers watcom77,silverfrost ftn95,gfortran,2 versions of g77 and f80. Watcom says it is to old of program,find older compiler,silverfrost opens it,debugs, etc. but is changing all the subroutines from "real" to "complex" and vice-vesa,and the g77's seem to install perfectly (library links and etc.) but wont even compile the test.f programs.My problem is 1; to recompile "as is" or "upgrade" the code? PROGRAM xconvlv INTEGER N,N2,M PARAMETER (N=2048,N2=2048,M=128) INTEGER i,isign REAL data(n),respns(m),resp(n),ans(n2),t3(n),DUMMY OPEN(UNIT=1, FILE='C:\QKBAS20\FDATA1.DAT') DO 1 i=1,N READ(1,*) T3(i), data(i), DUMMY continue CLOSE(UNIT-1) do 12 i=1,N respns(i)=data(i) resp(i)=respns(i) continue isign=-1 call convlv(data,N,resp,M,isign,ans) OPEN(UNIT=1,FILE='C:\QKBAS20\FDATA9.DAT') DO 14 i=1,N WRITE(1,*) T3(i), ans(i) continue END SUBROUTINE CONVLV(data,n,respns,m,isign,ans) INTEGER isign,m,n,NMAX REAL data(n),respns(n) COMPLEX ans(n) PARAMETER (NMAX=4096) * uses realft, twofft INTEGER i,no2 COMPLEX fft (NMAX) do 11 i=1, (m-1)/2 respns(n+1-i)=respns(m+1-i) continue do 12 i=(m+3)/2,n-(m-1)/2 respns(i)=0.0 continue call twofft (data,respns,fft,ans,n) no2=n/2 do 13 i=1,no2+1 if (isign.eq.1) then ans(i)=fft(i)*ans(i)/no2 else if (isign.eq.-1) then if (abs(ans(i)) .eq.0.0) pause ans(i)=fft(i)/ans(i)/no2 else pause 'no meaning for isign in convlv' endif continue ans(1)=cmplx(real (ans(1)),real (ans(no2+1))) call realft(ans,n,-1) return END SUBROUTINE realft(data,n,isign) INTEGER isign,n REAL data(n) * uses four1 INTEGER i,i1,i2,i3,i4,n2p3 REAL c1,c2,hli,hir,h2i,h2r,wis,wrs DOUBLE PRECISION theta,wi,wpi,wpr,wr,wtemp theta=3.141592653589793d0/dble(n/2) cl=0.5 if (isign.eq.1) then c2=-0.5 call four1(data,n/2,+1) else c2=0.5 theta=-theta endif (etc.,etc., etc.) SUBROUTINE twofft(data,data2,fft1,fft2,n) INTEGER n REAL data1(n,data2(n) COMPLEX fft1(n), fft2(n) * uses four1 INTEGER j,n2 COMPLEX h1,h2,c1,c2 c1=cmplx(0.5,0.0) c2=cmplx(0.0,-0.5) do 11 j=1,n fft1(j)=cmplx(data1(j),data2(j) continue call four1 (fft1,n,1) fft2(1)=cmplx(aimag(fft1(1)),0.0) fft1(1)=cmplx(real(fft1(1)),0.0) n2=n+2 do 12 j=2,n/2+1 h1=c1*(fft1(j)+conjg(fft1(n2-j))) h2=c2*(fft1(j)-conjg(fft1(n2-j))) fft1(j)=h1 fft1(n2-j)=conjg(h1) fft2(j)=h2 fft2(n2-j)=conjg(h2) continue return END SUBROUTINE four1(data,nn,isign) INTEGER isign,nn REAL data(2*nn) INTEGER i,istep,j,m,mmax,n REAL tempi,tempr DOUBLE PRECISION theta, wi,wpi,wpr,wr,wtemp n=2*nn j=1 do 11 i=1,n,2 if(j.gt.i)then tempr=data(j) tempi=data(j+1) (etc.,etc.,etc.,) continue mmax=istep goto 2 endif return END There are 4 subroutines with this that are about 3 pages of code and whould be much easier to e-mail to someone if their able to help me with this.My e-mail is [email protected] , or if someone could tell me where to get a "working" compiler that could recompile this? THANK-YOU, THANK-YOU,and THANK-YOU for any help with this! The errors Iam getting are; 1.In a call to CONVLV from another procedure,the first argument was of a type REAL(kind=1), it is now a COMPLEX(kind=1) 2.In a call to REALFT from another procedure, ... COMPLEX(kind=1) it is now a REAL(kind=1) 3.In a call to TWOFFT from...COMPLEX(kind-1) it is now a REAL(kind=1) 4.In a previous call to FOUR1, the first argument was of a type REAL(kind=1) it is now a COMPLEX(kind=1).

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multple inner joins 3 or more crashes mysql server 5.1.30 opensolaris

- by user331849

when doing simple query on 4 inner joined tables, the server crashes with the output below appearing in the the mysql .err file. eg. select * from table1 inner join table2 on table1.a = table2.a and table1.b = table2.b inner join table3 on table2.a = table3.a and table2.c = table3.c inner join table4 on table3.a = table4.a and table3.d = table4.d If i remove one of the tables it executes fine. Likewise if I remove a different table, it executes fine. Though all tables have been checked anyway, this would suggest that it is not a problem specifically with one of the tables. mysql.err trace: 100503 18:13:19 - mysqld got signal 11 ; This could be because you hit a bug. It is also possible that this binary or one of the libraries it was linked against is corrupt, improperly built, or misconfigured. This error can also be caused by malfunctioning hardware. We will try our best to scrape up some info that will hopefully help diagnose the problem, but since we have already crashed, something is definitely wrong and this may fail. key_buffer_size=1572864000 read_buffer_size=2097152 max_used_connections=11 max_threads=151 threads_connected=10 It is possible that mysqld could use up to key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 2155437 K bytes of memory Hope that's ok; if not, decrease some variables in the equation. thd: 0x72febda8 Attempting backtrace. You can use the following information to find out where mysqld died. If you see no messages after this, something went terribly wrong... stack_bottom = fe07efb0 thread_stack 0x40000 Trying to get some variables. Some pointers may be invalid and cause the dump to abort... thd-query at be1021f0 = explain select * from business inner join timetable on business.id = timetable.business_id inner join timetableentry on timetable.business_id = timetableentry.business_id and timetable.kid = timetableentry.parent inner join staff on timetable.business_id = staff.business_id and timetable.staf f_person = staff.kid where business.id = '3050bb04fda41df64a9c1c149150026c' thd-thread_id=9 thd-killed=NOT_KILLED The manual page at http://dev.mysql.com/doc/mysql/en/crashing.html contains information that should help you find out what is causing the crash. 100503 18:13:19 mysqld_safe mysqld restarted 100503 18:13:20 InnoDB: Failed to set DIRECTIO_ON on file ./ibdata1: OPEN: Inap propriate ioctl for device, continuing anyway 100503 18:13:20 InnoDB: Failed to set DIRECTIO_ON on file ./ibdata1: OPEN: Inap propriate ioctl for device, continuing anyway InnoDB: The log sequence number in ibdata files does not match InnoDB: the log sequence number in the ib_logfiles! 100503 18:13:20 InnoDB: Database was not shut down normally! InnoDB: Starting crash recovery. InnoDB: Reading tablespace information from the .ibd files... InnoDB: Restoring possible half-written data pages from the doublewrite InnoDB: buffer... InnoDB: Last MySQL binlog file position 0 2731, file name ./mysql-bin.000093 100503 18:13:20 InnoDB: Started; log sequence number 0 2650338426 100503 18:13:20 [Note] Recovering after a crash using mysql-bin 100503 18:13:20 [Note] Starting crash recovery... 100503 18:13:20 [Note] Crash recovery finished. This on opensolaris SunOS 5.11 snv_111b i86pc i386 i86pc Mysql 5.1.30 Here is a snippet from the my.cnf file: key_buffer = 1500M max_allowed_packet = 1M thread_stack = 256K thread_cache_size = 8 sort_buffer_size = 2M read_buffer_size = 2M read_rnd_buffer_size = 8M table_cache = 512 tmp_table_size = 400M max_heap_table_size = 64M query_cache_limit = 20M query_cache_size = 200M Is this a bug or a configuration issue?

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@OneToMany association joining on the wrong field

- by april26

I have 2 tables, devices which contains a list of devices and dev_tags, which contains a list of asset tags for these devices. The tables join on dev_serial_num, which is the primary key of neither table. The devices are unique on their ip_address field and they have a primary key identified by dev_id. The devices "age out" after 2 weeks. Therefore, the same piece of hardware can show up more than once in devices. I mention that to explain why there is a OneToMany relationship between dev_tags and devices where it seems that this should be a OneToOne relationship. So I have my 2 entities @Entity @Table(name = "dev_tags") public class DevTags implements Serializable { private Integer tagId; private String devTagId; private String devSerialNum; private List<Devices> devices; @Id @GeneratedValue @Column(name = "tag_id") public Integer getTagId() { return tagId; } public void setTagId(Integer tagId) { this.tagId = tagId; } @Column(name="dev_tag_id") public String getDevTagId() { return devTagId; } public void setDevTagId(String devTagId) { this.devTagId = devTagId; } @Column(name="dev_serial_num") public String getDevSerialNum() { return devSerialNum; } public void setDevSerialNum(String devSerialNum) { this.devSerialNum = devSerialNum; } @OneToMany(mappedBy="devSerialNum") public List<Devices> getDevices() { return devices; } public void setDevices(List<Devices> devices) { this.devices = devices; } } and this one public class Devices implements java.io.Serializable { private Integer devId; private Integer officeId; private String devSerialNum; private String devPlatform; private String devName; private OfficeView officeView; private DevTags devTag; public Devices() { } @Id @GeneratedValue(strategy = IDENTITY) @Column(name = "dev_id", unique = true, nullable = false) public Integer getDevId() { return this.devId; } public void setDevId(Integer devId) { this.devId = devId; } @Column(name = "office_id", nullable = false, insertable=false, updatable=false) public Integer getOfficeId() { return this.officeId; } public void setOfficeId(Integer officeId) { this.officeId = officeId; } @Column(name = "dev_serial_num", nullable = false, length = 64, insertable=false, updatable=false) @NotNull @Length(max = 64) public String getDevSerialNum() { return this.devSerialNum; } public void setDevSerialNum(String devSerialNum) { this.devSerialNum = devSerialNum; } @Column(name = "dev_platform", nullable = false, length = 64) @NotNull @Length(max = 64) public String getDevPlatform() { return this.devPlatform; } public void setDevPlatform(String devPlatform) { this.devPlatform = devPlatform; } @Column(name = "dev_name") public String getDevName() { return devName; } public void setDevName(String devName) { this.devName = devName; } @ManyToOne(fetch = FetchType.LAZY) @JoinColumn(name = "office_id") public OfficeView getOfficeView() { return officeView; } public void setOfficeView(OfficeView officeView) { this.officeView = officeView; } @ManyToOne() @JoinColumn(name="dev_serial_num") public DevTags getDevTag() { return devTag; } public void setDevTag(DevTags devTag) { this.devTag = devTag; } } I messed around a lot with @JoinColumn(name=) and the mappedBy attribute of @OneToMany and I just cannot get this right. I finally got the darn thing to compile, but the query is still trying to join devices.dev_serial_num to dev_tags.tag_id, the @Id for this entity. Here is the transcript from the console: 13:12:16,970 INFO [STDOUT] Hibernate: select devices0_.office_id as office5_2_, devices0_.dev_id as dev1_2_, devices0_.dev_id as dev1_156_1_, devices0_.dev_name as dev2_156_1_, devices0_.dev_platform as dev3_156_1_, devices0_.dev_serial_num as dev4_156_1_, devices0_.office_id as office5_156_1_, devtags1_.tag_id as tag1_157_0_, devtags1_.comment as comment157_0_, devtags1_.dev_serial_num as dev3_157_0_, devtags1_.dev_tag_id as dev4_157_0_ from ond.devices devices0_ left outer join ond.dev_tags devtags1_ on devices0_.dev_serial_num=devtags1_.tag_id where devices0_.office_id=? 13:12:16,970 INFO [IntegerType] could not read column value from result set: dev4_156_1_; Invalid value for getInt() - 'FDO1129Y2U4' 13:12:16,970 WARN [JDBCExceptionReporter] SQL Error: 0, SQLState: S1009 13:12:16,970 ERROR [JDBCExceptionReporter] Invalid value for getInt() - 'FDO1129Y2U4' That value for getInt() 'FD01129Y2U4' is a serial number, definitely not an Int! What am I missing/misunderstanding here? Can I join 2 tables on any fields I want or does at least one have to be a primary key?

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Resolving a Forward Declaration Issue Involving a State Machine in C++

- by hypersonicninja

I've recently returned to C++ development after a hiatus, and have a question regarding implementation of the State Design Pattern. I'm using the vanilla pattern, exactly as per the GoF book. My problem is that the state machine itself is based on some hardware used as part of an embedded system - so the design is fixed and can't be changed. This results in a circular dependency between two of the states (in particular), and I'm trying to resolve this. Here's the simplified code (note that I tried to resolve this by using headers as usual but still had problems - I've omitted them in this code snippet): #include <iostream> #include <memory> using namespace std; class Context { public: friend class State; Context() { } private: State* m_state; }; class State { public: State() { } virtual void Trigger1() = 0; virtual void Trigger2() = 0; }; class LLT : public State { public: LLT() { } void Trigger1() { new DH(); } void Trigger2() { new DL(); } }; class ALL : public State { public: ALL() { } void Trigger1() { new LLT(); } void Trigger2() { new DH(); } }; // DL needs to 'know' about DH. class DL : public State { public: DL() { } void Trigger1() { new ALL(); } void Trigger2() { new DH(); } }; class HLT : public State { public: HLT() { } void Trigger1() { new DH(); } void Trigger2() { new DL(); } }; class AHL : public State { public: AHL() { } void Trigger1() { new DH(); } void Trigger2() { new HLT(); } }; // DH needs to 'know' about DL. class DH : public State { public: DH () { } void Trigger1() { new AHL(); } void Trigger2() { new DL(); } }; int main() { auto_ptr<LLT> llt (new LLT); auto_ptr<ALL> all (new ALL); auto_ptr<DL> dl (new DL); auto_ptr<HLT> hlt (new HLT); auto_ptr<AHL> ahl (new AHL); auto_ptr<DH> dh (new DH); return 0; } The problem is basically that in the State Pattern, state transitions are made by invoking the the ChangeState method in the Context class, which invokes the constructor of the next state. Because of the circular dependency, I can't invoke the constructor because it's not possible to pre-define both of the constructors of the 'problem' states. I had a look at this article, and the template method which seemed to be the ideal solution - but it doesn't compile and my knowledge of templates is a rather limited... The other idea I had is to try and introduce a Helper class to the subclassed states, via multiple inheritance, to see if it's possible to specify the base class's constructor and have a reference to the state subclasse's constructor. But I think that was rather ambitious... Finally, would a direct implmentation of the Factory Method Design Pattern be the best way to resolve the entire problem?

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