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How to setup Hadoop cluster so that it accepts mapreduce jobs from remote computers?

- by drasto

There is a computer I use for Hadoop map/reduce testing. This computer runs 4 Linux virtual machines (using Oracle virtual box). Each of them has Cloudera with Hadoop (distribution c3u4) installed and serves as a node of Hadoop cluster. One of those 4 nodes is master node running namenode and jobtracker, others are slave nodes. Normally I use this cluster from local network for testing. However when I try to access it from another network I cannot send any jobs to it. The computer running Hadoop cluster has public IP and can be reached over internet for another services. For example I am able to get HDFS (namenode) administration site and map/reduce (jobtracker) administration site (on ports 50070 and 50030 respectively) from remote network. Also it is possible to use Hue. Ports 8020 and 8021 are both allowed. What is blocking my map/reduce job submits from reaching the cluster? Is there some setting that I must change first in order to be able to submit map/reduce jobs remotely? Here is my mapred-site.xml file: <configuration> <property> <name>mapred.job.tracker</name> <value>master:8021</value> </property>  <property> <name>mapred.jobtracker.plugins</name> <value>org.apache.hadoop.thriftfs.ThriftJobTrackerPlugin</value> <description>Comma-separated list of jobtracker plug-ins to be activated. </description> </property> <property> <name>jobtracker.thrift.address</name> <value>0.0.0.0:9290</value> </property> </configuration> And this is in /etc/hosts file: 192.168.1.15 master 192.168.1.14 slave1 192.168.1.13 slave2 192.168.1.9 slave3

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Finding the shortest path between two points on a grid, using Haskell.

- by esperantist

This is a problem that I can easily enough solve in a non-functional manner. But solving it in Haskell is giving me big problems. Me being inexperienced when it comes to functional programming is surely a reason. The problem: I have a 2D field divided into rectangles of equal size. A simple grid. Some rectangles are empty space (and can be passed through) while others are impassable. Given a starting rectangle A and a destination rectangle B, how would I calculate the shortest path between the two? Movement is possible only vertically and horizontally, in steps a single rectangle large. How would I go about accomplishing this in Haskell? Code snippets certainly welcome, but also certainly not neccessary. And links to further resources also very welcome! Thanks!

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Wrapping/warping a CALayer/UIView (or OpenGL) in 3D (iPhone)

- by jbrennan

I've got a UIView (and thus a CALayer) which I'm trying to warp or bend slightly in 3D space. That is, imagine my UIView is a flat label which I want to partially wrap around a beer bottle (not 360 degrees around, just on one "side"). I figured this would be possible by applying a transform to the view's layer, but as far as I can tell, this transform is limited to rotation, scale and translation of the layer uniformly. I could be wrong here, as my linear algebra is foggy at this point, to say the least. How can I achieve this?

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UITableView: Juxtaposing row, header, and footer insertions/deletions

- by jdandrea

Consider a very simple UITableView with one of two states. First state: One (overall) table footer One section containing two rows, a section header, and a section footer Second state: No table footer One section containing four rows and no section header/footer In both cases, each row is essentially one of four possible UITableViewCell objects, each containing its own UITextField. We don't even bother with reuse or caching, since we're only dealing with four known cells in this case. They've been created in an accompanying XIB, so we already have them all wired up and ready to go. Now consider we want to toggle between the two states. Sounds easy enough. Let's suppose our view controller's right bar button item provides the toggling support. We'll also track the current state with an ivar and enumeration. To be explicit for a sec, here's how one might go from state 1 to 2. (Presume we handle the bar button item's title as well.) In short, we want to clear out our table's footer view, then insert the third and fourth rows. We batch this inside an update block like so: // Brute forced references to the third and fourth rows in section 0 NSUInteger row02[] = {0, 2}; NSUInteger row03[] = {0, 3}; [self.tableView beginUpdates]; state = tableStateTwo; // 'internal' iVar, not a property self.tableView.tableFooterView = nil; [self.tableView insertRowsAtIndexPaths:[NSArray arrayWithObjects: [NSIndexPath indexPathWithIndexes:row02 length:2], [NSIndexPath indexPathWithIndexes:row03 length:2], nil] withRowAnimation:UITableViewRowAnimationFade]; [self.tableView endUpdates]; For the reverse, we want to reassign the table footer view (which, like the cells, is in the XIB ready and waiting), and remove the last two rows: // Use row02 and row03 from earlier snippet [self.tableView beginUpdates]; state = tableStateOne; self.tableView.tableFooterView = theTableFooterView; [self.tableView deleteRowsAtIndexPaths:[NSArray arrayWithObjects: [NSIndexPath indexPathWithIndexes:row02 length:2], [NSIndexPath indexPathWithIndexes:row03 length:2], nil] withRowAnimation:UITableViewRowAnimationFade]; [self.tableView endUpdates]; Now, when the table asks for rows, it's very cut and dry. The first two cells are the same in both cases. Only the last two appear/disappear depending on the state. The state ivar is consulted when the Table View asks for things like number of rows in a section, height for header/footer in a section, or view for header/footer in a section. This last bit is also where I'm running into trouble. Using the above logic, section 0's header/footer does not disappear. Specifically, the footer stays below the inserted rows, but the header now overlays the topmost row. If we switch back to state one, the section footer is removed, but the section header remains. How about using [self.tableView reloadData] then? Sure, why not. We take care not to use it inside the update block, per Apple's advisement, and simply add it after endUpdates. This time, good news! The section 0 header/footer disappears. :) However ... Toggling back to state one results in a most exquisite mess! The section 0 header returns, only to overlay the first row once again (instead of appear above it). The section 0 footer is placed below the last row just fine, but the overall table footer - now reinstated - overlays the section footer. Waaaaaah … now what? Just to be sure, let's toggle back to state two again. Yep, that looks fine. Coming back to state one? Yecccch. I also tried sprinkling in a few other stunts like using reloadSections:withRowAnimation:, but that only serves to make things worse. NSRange range = {0, 1}; NSIndexSet *indexSet = [NSIndexSet indexSetWithIndexesInRange:range]; ... [self.tableView reloadSections:indexSet withRowAnimation:UITableViewRowAnimationFade]; Case in point: If we invoke reloadSections... just before the end of the update block, changing to state two hides the first two rows from view, even though the space they would otherwise occupy remains. Switching back to state one returns section 0's header/footer to normal, but those first two rows remain invisible. Case two: Moving reloadSections... to just after the update block but before reloadData results in all rows becoming invisible! (I refer to the row as being invisible because, during tracing, tableView:cellForRowAtIndexPath: is returning bona-fide cell objects for those rows.) Case three: Moving reloadSections... after tableView:cellForRowAtIndexPath: brings us a bit closer, but the section 0 header/footer never returns when switching back to state one. Hmm. Perhaps it's a faux pas using both reloadSections... and reloadData, based on what I'm seeing at trace-time, which brings us to: Case four: Replacing reloadData with reloadSections... outright. All cells in state two disappear. All cells in state one remain missing as well (though the space is kept). So much for that theory. :) Tracing through the code, the cell and view objects, as well as the section heights, are all where they should be at the opportune times. They just aren't rendering sanely. So, how to crack this case? Clues welcome/appreciated!

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android: which view should I use for showing text and image?

- by Yang

My app shows a list of items, where each line is an item title with its image asides, the line reserves 70% of space for text and 30% for image. Imagine what iphone app store looks like. Which view/layout combo is recommended for this purpose? I googled and find this article: http://www.curious-creature.org/2009/02/22/android-layout-tricks-1/ Does this view sound good? <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="?android:attr/listPreferredItemHeight" android:padding="6dip"> <ImageView android:id="@+id/icon" android:layout_width="wrap_content" android:layout_height="fill_parent" android:layout_alignParentTop="true" android:layout_alignParentBottom="true" android:layout_marginRight="6dip" android:src="@drawable/icon" /> <TextView android:id="@+id/secondLine" android:layout_width="fill_parent" android:layout_height="26dip" android:layout_toRightOf="@id/icon" android:layout_alignParentBottom="true" android:layout_alignParentRight="true" android:singleLine="true" android:ellipsize="marquee" android:text="Simple application that shows how to use RelativeLayout" /> <TextView android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_toRightOf="@id/icon" android:layout_alignParentRight="true" android:layout_alignParentTop="true" android:layout_above="@id/secondLine" android:layout_alignWithParentIfMissing="true" android:gravity="center_vertical" android:text="My Application" />

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Eclipse Code Templates with Cobol

- by Bruno Brant

People, My team is just beginning to learn how to use COBOL on Eclipse (as part of the Rational Developer for System Z package) and one of our most desired features are code templates or code snippets. What we'd like to have is a code completion based on snippets just like we have on Java. For example, when I type try and hit ctrl-space Eclipse shows me a list of completion options, where one of those is create a try/catch block. Well, in COBOL one could leverage this when creating, for example, embedded SQL blocks, like EXEC SQL SELECT field, field, field, FROM table WHERE field = value, field = value END-EXEC. However, for some reason, it seems that Eclipse treats COBOL a little differently (no wonder why) from other languages. As such, when looking for the code templates in the preferences menu for COBOL, its appearance is very different from the Java one. The question is: how does one uses Eclipse's code templates with COBOL?

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Monitoring disk performance with MRTG

- by Ghostrider

I use MRTG to monitor vital stats on my servers like disk space, CPU load, memory usage, temperatures etc. It all works fine and well for parameters that don't change rapidly. By running small VB script I can also get any Performance Counter. However these scripts are called by MRTG every 5 minutes while performance counters like physical disk idle time return a snapshot value from previous few seconds so a lot or data is missed. Surely I could write a service that would poll all required counters in background and store average values somewhere on disk where MRTG would pick them up. However before I do so I would like to find out if there is some ready solution that would allow me to get average value of some counter for the last 5 minutes as opposed to immediate snapshot.

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UILabel text doesn't word wrap

- by iFloh

Hi, I have a long text string (including \n newline charactersthat I feed into a UILabel for display. The UILabel is dynamically setup to provide sufficient space foor the text. My code looks like this: myText = [NSString stringWithFormat:@"%@some text: %@ \n \n %@", myText, moreText1, moreText2]; NSLog(@"%@", myText); myLabelSize = [vLabelText sizeWithFont:[UIFont fontWithName:@"Helvetica" size:(15.0)] constrainedToSize:cMaxLabelSize lineBreakMode:UILineBreakModeWordWrap]; UILabel *lBody = [[UILabel alloc] initWithFrame:CGRectMake(cFromLeft, vFromTop, vLabelSize.width, vLabelSize.height)]; lBody.font = [UIFont fontWithName:@"Helvetica" size:(15.0)]; lBody.lineBreakMode = UILineBreakModeWordWrap; lBody.textAlignment = UITextAlignmentLeft; lBody.backgroundColor = [UIColor cyanColor]; [myScrollView addSubview:lBody]; lBody.text = vLabelText; My problem is that the text does not wrap, but truncates after the first line. The \n newlines are ignored. any ideas?

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How can I extract similarities/patterns from a collection of binary strings?

- by JohnIdol

I have a collection of binary strings of given size encoding effective solutions to a given problem. By looking at them, I can spot obvious similarities and intuitively see patterns of symmetry and periodicity. Are there mathematical/algorithmic tools I can "feed" this set of strings to and get results that might give me an idea of what this set of strings have in common? By doing so I would be able to impose a structure (or at least favor some features over others) on candidate solutions in order to greatly reduce the search space, maximizing chances to find optimal solutions for my problem (I am using genetic algorithms as the search tool - but this is not pivotal to the question). Any pointers/approaches appreciated.

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stanford pos tagger runs out of memory?

- by goh

my stanford tagger ran out of memory. Is it because the text has to be properly formatted? This is because i use it to tag html contents, with the tags stripped, but there may have quite a excessive amount of newlines. here is the error: BlockquoWARNING: Untokenizable: ? (char in decimal: 9829) Exception in thread "main" java.lang.OutOfMemoryError: Java heap space at edu.stanford.nlp.sequences.ExactBestSequenceFinder.bestSequenceNew(Ex actBestSequenceFinder.java:175) at edu.stanford.nlp.sequences.ExactBestSequenceFinder.bestSequence(Exact BestSequenceFinder.java:98) at edu.stanford.nlp.tagger.maxent.TestSentence.runTagInference(TestSente nce.java:277) at edu.stanford.nlp.tagger.maxent.TestSentence.testTagInference(TestSent ence.java:258) at edu.stanford.nlp.tagger.maxent.TestSentence.tagSentence(TestSentence. java:110) at edu.stanford.nlp.tagger.maxent.MaxentTagger.tagSentence(MaxentTagger. java:825) at edu.stanford.nlp.tagger.maxent.MaxentTagger.runTagger(MaxentTagger.ja va:1319) at edu.stanford.nlp.tagger.maxent.MaxentTagger.runTagger(MaxentTagger.ja va:1225) at edu.stanford.nlp.tagger.maxent.MaxentTagger.runTagger(MaxentTagger.ja va:1183) at edu.stanford.nlp.tagger.maxent.MaxentTagger.main(MaxentTagger.java:13 58)

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multiple webapps in tomcat -- what is the optimal architecture?

- by rvdb

I am maintaining a growing base of mainly Cocoon-2.1-based web applications [http://cocoon.apache.org/2.1/], deployed in a Tomcat servlet container [http://tomcat.apache.org/], and proxied with an Apache http server [http://httpd.apache.org/docs/2.2/]. I am conceptually struggling with the best way to deploy multiple web applications in Tomcat. Since I'm not a Java programmer and we don't have any sysadmin staff I have to figure out myself what is the most sensible way to do this. My setup has evolved through 2 scenarios and I'm considering a third for maximal separation of the distinct webapps. [1] 1 Tomcat instance, 1 Cocoon instance, multiple webapps -tomcat |_ webapps |_ webapp1 |_ webapp2 |_ webapp[n] |_ WEB-INF (with Cocoon libs) This was my first approach: just drop all web applications inside a single Cocoon webapps folder inside a single Tomcat container. This seemed to run fine, I did not encounter any memory issues. However, this poses a maintainability drawback, as some Cocoon components are subject to updates, which often affect the webapp coding. Hence, updating Cocoon becomes unwieldy: since all webapps share the same pool of Cocoon components, updating one of them would require the code in all web applications to be updated simultaneously. In order to isolate the web applications, I moved to the second scenario. [2] 1 Tomcat instance, each webapp in its dedicated Cocoon environment -tomcat |_ webapps |_ webapp1 | |_ WEB-INF (with Cocoon libs) |_ webapp1 | |_ WEB-INF (with Cocoon libs) |_ webapp[n] |_ WEB-INF (with Cocoon libs) This approach separates all webapps into their own Cocoon environment, run inside a single Tomcat container. In theory, this works fine: all webapps can be updated independently. However, this soon results in PermGenSpace errors. It seemed that I could manage the problem by increasing memory allocation for Tomcat, but I realise this isn't a structural solution, and that overloading a single Tomcat in this way is prone to future memory errors. This set me thinking about the third scenario. [3] multiple Tomcat instances, each with a single webapp in its dedicated Cocoon environment -tomcat |_ webapps |_ webapp1 |_ WEB-INF (with Cocoon libs) -tomcat |_ webapps |_ webapp2 |_ WEB-INF (with Cocoon libs) -tomcat |_ webapps |_ webapp[n] |_ WEB-INF (with Cocoon libs) I haven't tried this approach, but am thinking of the $CATALINA_BASE variable. A single Tomcat distribution can be multiply instanciated with different $CATALINA_BASE environments, each pointing to a Cocoon instance with its own webapp. I wonder whether such an approach could avoid the structural memory-related problems of approach [2], or will the same issues apply? On the other hand, this approach would complicate management of the Apache http frontend, as it will require the AJP connectors of the different Tomcat instances to be listening at different ports. Hence, Apache's worker configuration has to be updated and reloaded whenever a new webapp (in its own Tomcat instance) is added. And there seems no way to reload worker.properties without restarting the entire Apache http server. Is there perhaps another / more dynamic way of 'modularizing' multiple Tomcat-served webapps, or can one of these scenarios be refined? Any thoughts, suggestions, advice much appreciated. Ron

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CGBitmapContextCreate: unsupported parameter combination

- by tarmes

I'm getting this error when creating a bitmap context: CGBitmapContextCreate: unsupported parameter combination: 8 integer bits/component; 24 bits/pixel; 3-component color space; kCGImageAlphaNone; 7936 bytes/row. Here's the code (note that the context is based on the parameters of an existing CGImage: context = CGBitmapContextCreate(NULL, (int)pi.bufferSizeRequired.width, (int)pi.bufferSizeRequired.height, CGImageGetBitsPerComponent(imageRef), 0, CGImageGetColorSpace(imageRef), CGImageGetBitmapInfo(imageRef)); Width is 2626, height is 3981. I've leaving bytesPerRow at zero so that it gets calculated automatically for me, and it's chosen 7936 of its own accord. So, where on Earth is the inconsistency? It's driving me nuts.

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are posix pipes lightweight?

- by Nils Pipenbrinck

In a linux application I'm using pipes to pass information between threads. The idea behind using pipes is that I can wait for multiple pipes at once using poll(2). That works well in practice, and my threads are sleeping most of the time and only wake up if there is something to do for them. On the user-space the pipes look just like two file-handles. Now I wonder wonder how much resources such a pipes use on the OS side. Btw: In my application I only send single bytes every now and then. Think about my pipes as simple message queues that allow me to wake-up receiving threads, tell them to send some status-data or to terminate.

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Facebook Like button working but not sharing

- by Victor P

Im using the XFBML version of the Like button but the "Share it" box with the space to leave a comment doesn't show up after clicking "Recommend". The rest works fine. Im using this code: <fb:like href="www.google.cl" width="300" action="recommend" font="lucida grande"></fb:like> And, in the end of the page </body> <div id="fb-root"></div> <script src="http://connect.facebook.net/en_US/all.js"></script> <script> FB.init({appId: '1234567890', status: true, cookie: true, xfbml: true}); FB.Event.subscribe('auth.sessionChange', function(response) { if (response.session) { // A user has logged in, and a new cookie has been saved } else { // The user has logged out, and the cookie has been cleared } }); </script> </html> Do you know what is happening? Any advice is warmly received. Thanks

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How to shutdown VMware Fusion virtual machine on host shutdown

- by Nikksno

I have a Mac mini running Mavericks server. I installed the Atmail server + webmail vm [a linux centos distribution] in VMware Fusion Professional 6 with the VMware Tools addon. It works flawlessly. I've set it to start on boot and that works very reliably. However I've been looking for a way to also safely and gracefully shut it down whenever OS X shuts down for whatever reason. The Mac is connected to a UPS and configured to perform an automatic shutdown in case the battery starts running low so that's no additional problem. Now the first thing I did was to go into Fusion's prefs and select "Power off the vm" when closing it. However I noticed that for some arcane reason closing the vm window would actually forcibly power off the vm: so then I found this post that showed me how to change the default power options and I managed to have the vm cleanly shutdown when closing its window or quitting Fusion altogether. At this point I was hoping to have solved the problem but as it turns out upon invoking system shutdown OS X doesn't wait for the vm to shutdown and terminates Fusion before it has a chance to do so. At this point I started looking for a way to automate the process of shutting down the guest os via some advanced setting but had no luck in doing so. That's when I found a command to shut the vm down: vmrun and it worked. The only thing left was to find out a way to execute this script on os x shutdown and giving it a little time to power off completely. However this turned out to be a nightmare: I spent hours looking through several ways to do this with Startup Items, rc.shutdown, cron, launchd, etc... but none of them worked the way I had configured them. I have to say that I found very limited information on using launchd for a shutdown script execution and I know it's the latest thing in the OS X world so I'm hoping someone out there among you will be able to help me out with this. I still think this is an extremely basic feature to ask for and I was really surprised to find this little documentation on so many different aspects of this problem. Is Fusion too basic of an application for this? I really hope someone can help. Thank you very much in advance.

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UIImages not displaying in TableView on iPhone, but working in Simulator

- by Graeme

Hi, I have a UITable View that displays an image in the left hand side of the table cell, and it works fine in the simulator. Only problem is, once I ran it on my device no images appear. It's just a blank white space. Have checked that images are added to resource folder for build (which they are) and that capitals etc. match (which they do). Any ideas? Thanks. Code to display images: cell.imageView.layer.masksToBounds = YES; cell.imageView.layer.cornerRadius = 5.0; UIImage *image = [UIImage imageNamed:[[dog types] stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]]];; if ( image ) { cell.imageView.image = [image imageScaledToSize:CGSizeMake(50, 50)]; }

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Win32 API Question

- by Lalit_M

We have developed a ASP.NET web application and has implemented a custom authentication solution using active directory as the credentials store. Our front end application uses a normal login form to capture the user name and password and leverages the Win32 LogonUser method to authenticate the user’s credentials. When we are calling the LogonUser method, we are using the LOGON32_LOGON_NETWORK as the logon type. The issue we have found is that user profile folders are being created under the C:\Users folder of the web server. The folder seems to be created when a new user who has never logged on before is logging in for the first time. As the number of new users logging into the application grows, disk space is shrinking due to the large number of new user folders getting created. Has anyone seen this behavior with the Win32 LogonUser method? Does anyone know how to disable this behavior?

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how do you use ${word_selection} in an Eclipse PDT template?

- by pocketfullofcheese

I was recently trying to use some code templates with Eclipse PDT 2.1 to speed up some common tasks. We use a lot of getters/setters, so I wrote the following template. function get${word_selection}() { return $$this->getData('${word_selection}'); } function set${word_selection}($$${word_selection}) { $$this->setData('${word_selection}', $$${word_selection}); } I named the template "getset" and the only way I know to use the Code Assist is to type: "getset" then hit my code assist keys (I have it set to Esc, but I think the default was Ctrl+Space). The problem is, this doesn't actually let me select a word to be used by the ${word_selection}. My question is: how do I type in my template name, hit the key combo, and have a word selected all at the same time?

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MVVM framework AND Prism 4?

- by Karsten

I just read this question. It has some nice answers, but they are over 1 year old, and a lot have changed in this space over the last year. Some of the most popular frameworks have come out in a new mayor release such as Prism and MVVM Light Toolkit. My question is somehow the same, but with one twist, I'm already using Prism 4.0 because of the region and module features. Prism 4.0 embraces MVVM, but I feel there are something which are "not lightweight", for instance interaction requests. So I'm thinking would it better to use another MVVM framework either as a substitute or a supplement for Prism 4.0?

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Using RegEx to replace invalid characters

- by yeahumok

Hello I have a directory with lots of folders, subfolder and all with files in them. The idea of my project is to recurse through the entire directory, gather up all the names of the files and replace invalid characters (invalid for a SharePoint migration). However, i'm completely unfamiliar with Regular Expressions. The characters i need to get rid in filenames are: ~, #, %, &, *, { } , \, /, :, <, ?, -, | and "" I want to replace these characters with a blank space. I was hoping to use a string.replace() method to look through all these file names and do the replacement. So far, the only code i've gotten to is the recursion. I was thinking of the recursion scanning the drive, fetching the names of these files and putting them in a List. Can anybody help me with how to find/replace invalid chars with RegEx with those specific characters?

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Problem calling linux C code from FIQ handler

- by fastmonkeywheels

I'm working on an armv6 core and have an FIQ hander that works great when I do all of my work in it. However I need to branch to some additional code that's too large for the FIQ memory area. The FIQ handler gets copied from fiq_start to fiq_end to 0xFFFF001C when registered static void test_fiq_handler(void) { asm volatile("\ .global fiq_start\n\ fiq_start:"); // clear gpio irq asm("ldr r10, GPIO_BASE_ISR"); asm("ldr r9, [r10]"); asm("orr r9, #0x04"); asm("str r9, [r10]"); // clear force register asm("ldr r10, AVIC_BASE_INTFRCH"); asm("ldr r9, [r10]"); asm("mov r9, #0"); asm("str r9, [r10]"); // prepare branch register asm(" ldr r11, fiq_handler"); // save all registers, build sp and branch to C asm(" adr r9, regpool"); asm(" stmia r9, {r0 - r8, r14}"); asm(" adr sp, fiq_sp"); asm(" ldr sp, [sp]"); asm(" add lr, pc,#4"); asm(" mov pc, r11"); #if 0 asm("ldr r10, IOMUX_ADDR12"); asm("ldr r9, [r10]"); asm("orr r9, #0x08 @ top/vertex LED"); asm("str r9,[r10] @turn on LED"); asm("bic r9, #0x08 @ top/vertex LED"); asm("str r9,[r10] @turn on LED"); #endif asm(" adr r9, regpool"); asm(" ldmia r9, {r0 - r8, r14}"); // return asm("subs pc, r14, #4"); asm("IOMUX_ADDR12: .word 0xFC2A4000"); asm("AVIC_BASE_INTCNTL: .word 0xFC400000"); asm("AVIC_BASE_INTENNUM: .word 0xFC400008"); asm("AVIC_BASE_INTDISNUM: .word 0xFC40000C"); asm("AVIC_BASE_FIVECSR: .word 0xFC400044"); asm("AVIC_BASE_INTFRCH: .word 0xFC400050"); asm("GPIO_BASE_ISR: .word 0xFC2CC018"); asm(".globl fiq_handler"); asm("fiq_sp: .long fiq_stack+120"); asm("fiq_handler: .long 0"); asm("regpool: .space 40"); asm(".pool"); asm(".align 5"); asm("fiq_stack: .space 124"); asm(".global fiq_end"); asm("fiq_end:"); } fiq_hander gets set to the following function: static void fiq_flip_pins(void) { asm("ldr r10, IOMUX_ADDR12_k"); asm("ldr r9, [r10]"); asm("orr r9, #0x08 @ top/vertex LED"); asm("str r9,[r10] @turn on LED"); asm("bic r9, #0x08 @ top/vertex LED"); asm("str r9,[r10] @turn on LED"); asm("IOMUX_ADDR12_k: .word 0xFC2A4000"); } EXPORT_SYMBOL(fiq_flip_pins); I know that since the FIQ handler operates outside of any normal kernel API's and that it is a rather high priority interrupt I must ensure that whatever I call is already swapped into memory. I do this by having the fiq_flip_pins function defined in the monolithic kernel and not as a module which gets vmalloc. If I don't branch to the fiq_flip_pins function, and instead do the work in the test_fiq_handler function everything works as expected. It's the branching that's causing me problems at the moment. Right after branching I get a kernel panic about a paging request. I don't understand why I'm getting the paging request. fiq_flip_pins is in the kernel at: c00307ec t fiq_flip_pins Unable to handle kernel paging request at virtual address 736e6f63 pgd = c3dd0000 [736e6f63] *pgd=00000000 Internal error: Oops: 5 [#1] PREEMPT Modules linked in: hello_1 CPU: 0 Not tainted (2.6.31-207-g7286c01-svn4 #122) PC is at strnlen+0x10/0x28 LR is at string+0x38/0xcc pc : [<c016b004>] lr : [<c016c754>] psr: a00001d3 sp : c3817ea0 ip : 736e6f63 fp : 00000400 r10: c03cab5c r9 : c0339ae0 r8 : 736e6f63 r7 : c03caf5c r6 : c03cab6b r5 : ffffffff r4 : 00000000 r3 : 00000004 r2 : 00000000 r1 : ffffffff r0 : 736e6f63 Flags: NzCv IRQs off FIQs off Mode SVC_32 ISA ARM Segment user Control: 00c5387d Table: 83dd0008 DAC: 00000015 Process sh (pid: 1663, stack limit = 0xc3816268) Stack: (0xc3817ea0 to 0xc3818000) Since there are no API calls in my code I have to assume that something is going wrong in the C call and back. Any help solving this is appreciated.

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Clojure editor/IDE recommendations on OS X

- by Julien Chastang

I am starting to learn the Clojure programming language. Are there any recommendations for Clojure editors/IDEs on OS X? Update 2009-9-23: The clojure space has changed tremendously since I originally posted this question. Many of the links below, especially those that refer to clojure-mode with emacs, are out-of-date. The best clojure IDE I found was the enclojure Netbeans plugin which was recently released (2009-08-25). Update 2010-4-30: Here is another very good link on this subject by Lau B. Jensen. Also, for my own clojure development, I have actually moved to emacs / swank-clojure.

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SAPI Speech recognition delphi

- by XBasic3000

I need create a programatic equivalent using delphi language... or could someone post a link on how to do grammars in peech recogniton using the delphi. sorry for my english... **Programmatic Equivalent C#:** Ref: http://msdn.microsoft.com/en-us/library/ms723634(v=VS.85).aspx To add a phrase to a rule, SAPI provides an API called ISpGrammarBuilder::AddWordTransition. The application developer can add the sentences as follows: SPSTATEHANDLE hsHelloWorld; // Create new top-level rule called "HelloWorld" hr = cpRecoGrammar->GetRule(L"HelloWorld", NULL, SPRAF_TopLevel | SPRAF_Active, TRUE, &hsHelloWorld); // Check hr // Add the command words "hello world" // Note that the lexical delimiter is " ", a space character. // By using a space delimiter, the entire phrase can be added // in one method call hr = cpRecoGrammar->AddWordTransition(hsHelloWorld, NULL, L"hello world", L" ", SPWT_LEXICAL, NULL, NULL); // Check hr // Add the command words "hiya there" // Note that the lexical delimiter is "|", a pipe character. // By using a pipe delimiter, the entire phrase can be added // in one method call hr = cpRecoGrammar->AddWordTransition(hsHelloWorld, NULL, L"hiya|there", L"|", SPWT_LEXICAL, NULL, NULL); // Check hr // save/commit changes hr = cpRecoGrammar->Commit(NULL); // Check hr XML Grammar Sample(s): <GRAMMAR>  <RULE NAME="HelloWorld" TOPLEVEL="ACTIVE"> <P>hello world</P> </RULE>  <RULE NAME="HelloWorld_Disp" TOPLEVEL="ACTIVE"> <P DISP="Hiya there!">hello world</P> </RULE>  <RULE NAME="Question_Pron" TOPLEVEL="ACTIVE"> <P DISP="I don't understand" PRON="eh">what</P> </RULE>   <RULE NAME="NurseryRhyme" TOPLEVEL="ACTIVE"> <P>hey</P> <P MIN="2" MAX="2">diddle</P> </RULE>   <RULE NAME="UseWeights" TOPLEVEL="ACTIVE"> <LIST>  <P WEIGHT=".95">recognize speech</P> <P WEIGHT=".05">wreck a nice beach</P> </LIST> </RULE>   <RULE NAME="UseProps" TOPLEVEL="ACTIVE">  <P PROPNAME="NOVALUE">one</P>  <P PROPNAME="NUMBER" VAL="2">two</P>  <P PROPNAME="STRING" VALSTR="three">three</P> </RULE> </GRAMMAR>

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perl one liner alternative to this bash "chain"?

- by Michael Mao

Hello everyone: I am trying to comprehend Perl following the way describe in the book "Minimal Perl". I've uploaded all source txt files onto my own server : results folder I got the output from using several bash commands in a "chain" like this: cat run*.txt | grep '^Bank[[:space:]]Balance'| cut -d ':' -f2 | grep -E '\$[0-9]+' I know this is far from the most concise and efficient, but at least it works... As our uni subject now moves onto the Perl part, I'd like to know if there is a way to get the same results in one line? I am trying something like the following code but stuck in the middle: Chenxi Mao@chenxi-a6b123bb /cygdrive/c/eMarket/output $ perl -wlne 'print; if $n=~/^Bank Balance/' syntax error at -e line 1, near "if $n" Execution of -e aborted due to compilation errors.

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Ignore whitespace in HTML

- by IP

Is there anything in HTML/CSS that tells the browser to ignore whitespace completely? So many times when you want to put, say, two images next to each other - you try desperately to keep the HTML readable, but the browser puts a space between them. So instead of something like this: <imc src="images/minithing.jpg" alt="my mini thing" /> <imc src="images/minithing.jpg" alt="my mini thing" /> <imc src="images/minithing.jpg" alt="my mini thing" /> <imc src="images/minithing.jpg" alt="my mini thing" /> you end up with this <imc src="images/minithing.jpg" alt="my mini thing" /><imc src="images/minithing.jpg" alt="my mini thing" /><imc src="images/minithing.jpg" alt="my mini thing" /><imc src="images/minithing.jpg" alt="my mini thing" /> Which is just so horrible!

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