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• Using an ActiveX control without a form/dialog/window in C++, VS 2008

  - by younevertell

  an ActiveX control generated by Visual Basic 6, very old stuff, it has a couple of methods and one event. now I have to use the control in C++, visual studio 2008, but I don't like to generate a form/dialog/window as constainer. I add some MFC class From ActiveX Control. Now the wrap class has all the methods defined in the ActiveX control. I definitely need add event handler to take care of the event fired by ActiveX control. With a form/dialgue/window, it could be done by below BEGIN_EVENTSINK_MAP ON_EVENT. My questions are 1. how to add the event handler without a form/dialgue/window. Is this impossible? 2. Could I manually add constructor in the ActiveX control wrap class, so I could use new operator to get an instance on the heap? Thanks Add the Event Sinks Map near the start of the definition (.cpp) file. The BEGIN_EVENTSINK_MAP macro takes the container's Class name, then the base class name as parameters. The container's class name is used again in the AFX_EVENTSINK_MAP macro and the ON_EVENT macro.

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• Sorted queue with dropping out elements

  - by ffriend

  I have a list of jobs and queue of workers waiting for these jobs. All the jobs are the same, but workers are different and sorted by their ability to perform the job. That is, first person can do this job best of all, second does it just a little bit worse and so on. Job is always assigned to the person with the highest skills from those who are free at that moment. When person is assigned a job, he drops out of the queue for some time. But when he is done, he gets back to his position. So, for example, at some moment in time worker queue looks like: [x, x, .83, x, .7, .63, .55, .54, .48, ...] where x's stand for missing workers and numbers show skill level of left workers. When there's a new job, it is assigned to 3rd worker as the one with highest skill of available workers. So next moment queue looks like: [x, x, x, x, .7, .63, .55, .54, .48, ...] Let's say, that at this moment worker #2 finishes his job and gets back to the list: [x, .91, x, x, .7, .63, .55, .54, .48, ...] I hope the process is completely clear now. My question is what algorithm and data structure to use to implement quick search and deletion of worker and insertion back to his position. For the moment the best approach I can see is to use Fibonacci heap that have amortized O(log n) for deleting minimal element (assigning job and deleting worker from queue) and O(1) for inserting him back, which is pretty good. But is there even better algorithm / data structure that possibly take into account the fact that elements are already sorted and only drop of the queue from time to time?

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• Asynchronous URL connection objective C

  - by tweety

  I created an asynchronous URL connection to call a web service using HTTP POST method. after I am pinging the web i set an NSTimerInterval in the completion handler. my problem is when I'm trying to display the time on the view controller it is not doing promptly. I know block is stored in the heap and gets executed later on anytime and probably that's why i'm not getting prompt answer. I was wondering is there any other way to do this? Thanks in advance. my code: __block NSDate *start= [NSDate date]; __block NSDate *end; __block double miliseconds; __block NSTimeInterval time; [NSURLConnection sendAsynchronousRequest:urlRequest queue:queue completionHandler:^(NSURLResponse *response, NSData *data, NSError *error) { if([data length]==0 && error==nil){ end=[NSDate date]; time=[end timeIntervalSinceDate:start]; NSLog(@"Successfully Pinged"); miliseconds = time; // calling a method to display ping time [self label:miliseconds]; } -(void) label:(double) mili{ double miliseconds=mili*1000; self.timeDisplay.text=[NSString stringWithFormat:@"Time: %.3f ms", miliseconds];

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• How string accepting interface should look like?

  - by ybungalobill

  Hello, This is a follow up of this question. Suppose I write a C++ interface that accepts or returns a const string. I can use a const char* zero-terminated string: void f(const char* str); // (1) The other way would be to use an std::string: void f(const string& str); // (2) It's also possible to write an overload and accept both: void f(const char* str); // (3) void f(const string& str); Or even a template in conjunction with boost string algorithms: template<class Range> void f(const Range& str); // (4) My thoughts are: (1) is not C++ish and may be less efficient when subsequent operations may need to know the string length. (2) is bad because now f("long very long C string"); invokes a construction of std::string which involves a heap allocation. If f uses that string just to pass it to some low-level interface that expects a C-string (like fopen) then it is just a waste of resources. (3) causes code duplication. Although one f can call the other depending on what is the most efficient implementation. However we can't overload based on return type, like in case of std::exception::what() that returns a const char*. (4) doesn't work with separate compilation and may cause even larger code bloat. Choosing between (1) and (2) based on what's needed by the implementation is, well, leaking an implementation detail to the interface. The question is: what is the preffered way? Is there any single guideline I can follow? What's your experience?

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• How come the Actionscript 3 ENTER_FRAME event is crazy nuts?

  - by nstory

  So, I've been toying around with Flash, browsing through the documentation, and all that, and noticed that the ENTER_FRAME event seems to defy my expectation of a deterministic universe. Take the following example: (new MovieClip()).addEventListener(Event.ENTER_FRAME, function(ev) {trace("Test");}); Notice this anonymous MovieClip is not added to the display hierarchy, and any reference to it is immediately lost. It will actually print "Test" once a frame until it is garbage collected. How insane is that? The behavior of this is actually determined by when the garbage collector feels like coming around in all its unpredictable insanity! Is there a better way to create intermittent failures? Seriously. My two theories are that either the DisplayObject class stores weak references to all its instances for the purpose of dispatching ENTER_FRAME events, or, and much wilder, the Flash player actually scans the heap each frame looking for ENTER_FRAME listeners to pull on. Can any hardened Actionscript developer clue me in on how this works? (And maybe a why - the - f**k they thought this was a good idea?)

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• How to repair Java in Ubuntu after trying to switch to Java 6 using update-java-alternatives

  - by Kau-Boy

  I tried to switch from Java 5 to Java 6 using the "update-java-alternatives" command like explained on this page: https://help.ubuntu.com/community/Java But afterwards I get the following error when I tried to execute java: root@webserver:~# java Error occurred during initialization of VM Could not reserve enough space for object heap Could not create the Java virtual machine. I also tried to reinstall the java binaries using "apt-get" but I didn't succeed reinstalling it. I would like to post the "apt-get" errors, but unfortunately I don't know how to print out the error messages in English and not in German. My system is a Ubuntu 8.04 ROOT server. Here is the (Google translated) english text tring to install Java 6 again: root@server:~# apt-get install sun-java6-jdk Reading package lists ... Ready Dependency tree Reading state information ... Ready sun-java6-jdk is already the newest version. sun-java6-jdk set to manually installed. 0 upgraded, 0 newly installed, 0 to remove and 86 not upgraded. 1 not fully installed or removed. After this operation, 0B of additional disk space will be used. Set up a sun-java6-bin (6-03-0ubuntu2) ... Could not create the Java virtual machine. dpkg: error processing sun-java6-bin (- configure): Subprocess post-installation script returned error exit status 1 Errors were encountered while processing: sun-java6-bin E: Sub-process / usr / bin / dpkg returned an error code (1) I hope that this might help you helping me.

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• localhost yes but phpmyadmin blank

  - by Giskin Leow

  WAMP people having problem with both localhost and phpmyadmin loads blank which usually the port problem. Mine is only phpmyadmin blank. sqlbuddy and phpinfo no problem. tried uninstall reinstalled wamp. tried xampp, same problem, all works well, not phpmyadmin. mysql log: 120905 8:03:08 [Note] Plugin 'FEDERATED' is disabled. 120905 8:03:08 InnoDB: The InnoDB memory heap is disabled 120905 8:03:08 InnoDB: Mutexes and rw_locks use Windows interlocked functions 120905 8:03:08 InnoDB: Compressed tables use zlib 1.2.3 120905 8:03:09 InnoDB: Initializing buffer pool, size = 128.0M 120905 8:03:09 InnoDB: Completed initialization of buffer pool 120905 8:03:09 InnoDB: highest supported file format is Barracuda. 120905 8:03:09 InnoDB: Waiting for the background threads to start 120905 8:03:10 InnoDB: 1.1.8 started; log sequence number 1595675 120905 8:03:11 [Note] Server hostname (bind-address): '(null)'; port: 3306 120905 8:03:11 [Note] - '(null)' resolves to '::'; 120905 8:03:11 [Note] - '(null)' resolves to '0.0.0.0'; 120905 8:03:11 [Note] Server socket created on IP: '0.0.0.0'. 120905 8:03:13 [Note] Event Scheduler: Loaded 0 events 120905 8:03:13 [Note] wampmysqld: ready for connections. apache log [Wed Sep 05 08:03:09 2012] [notice] Apache/2.2.22 (Win32) PHP/5.4.3 configured -- resuming normal operations [Wed Sep 05 08:03:09 2012] [notice] Server built: May 13 2012 13:32:42 [Wed Sep 05 08:03:09 2012] [notice] Parent: Created child process 3812 [Wed Sep 05 08:03:09 2012] [notice] Child 3812: Child process is running [Wed Sep 05 08:03:09 2012] [notice] Child 3812: Acquired the start mutex. [Wed Sep 05 08:03:09 2012] [notice] Child 3812: Starting 64 worker threads. [Wed Sep 05 08:03:09 2012] [notice] Child 3812: Starting thread to listen on port 80. [Wed Sep 05 08:03:09 2012] [notice] Child 3812: Starting thread to listen on port 80. [Wed Sep 05 08:04:14 2012] [error] [client 127.0.0.1] File does not exist: C:/wamp/www/favicon.ico [Wed Sep 05 08:09:50 2012] [error] [client 127.0.0.1] File does not exist: C:/wamp/www/favicon.ico [Wed Sep 05 08:41:03 2012] [error] [client 127.0.0.1] File does not exist: C:/wamp/www/phpMyAdmin

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• C++ and Dependency Injection in unit testing

  - by lhumongous

  Suppose I have a C++ class like so: class A { public: A() { } void SetNewB( const B& _b ) { m_B = _b; } private: B m_B; } In order to unit test something like this, I would have to break A's dependency on B. Since class A holds onto an actual object and not a pointer, I would have to refactor this code to take a pointer. Additionally, I would need to create a parent interface class for B so I can pass in my own fake of B when I test SetNewB. In this case, doesn't unit testing with dependency injection further complicate the existing code? If I make B a pointer, I'm now introducing heap allocation, and some piece of code is now responsible for cleaning it up (unless I use ref counted pointers). Additionally, if B is a rather trivial class with only a couple of member variables and functions, why introduce a whole new interface for it instead of just testing with an instance of B? I suppose you could make the argument that it would be easier to refactor A by using an interface. But are there some cases where two classes might need to be tightly coupled?

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• Tracking down origin of I/O in multi-process server

  - by Craig Ringer

  I'm currently trying to track down some phantom I/O in a PostgreSQL build I'm testing. It's a multi-process server and it isn't simple to associate disk I/O back to a particular back-end and query. I thought Linux's perf tool would be ideal for this, but I'm struggling to capture block I/O performance counter metrics and associate them with user-space activity. It's easy to record block I/O requests and completions with, eg: sudo perf record -g -T -u postgres -e 'block:block_rq_*' and the user-space pid is recorded, but there's no kernel or user-space stack captured, or ability to snapshot bits of the user-space process's heap (say, query text) etc. So while you have the pid, you don't know what the process was doing at that point. Just perf script output like: postgres 7462 [002] 301125.113632: block:block_rq_issue: 8,0 W 0 () 208078848 + 1024 [postgres] If I add the -g flag to perf record it'll take snapshots of the kernel stack, but doesn't capture user-space state for perf events captured in the kernel. The user-space stack only goes up to the entry-point from userspace, like LWLockRelease, LWLockAcquire, memcpy (mmap'd IO), __GI___libc_write, etc. So. Any tips? Being able to capture a snapshot of the user-space stack in response to kernel events would be ideal.

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• Program always returns binary '>>' : no operator found which takes a left-hand operand of type error

  - by Tom Ward

  So I've been set a task to create a temperature converter in C++ using this equation: Celsius = (5/9)*(Fahrenheit – 32) and so far I've come up with this (I've cut out the 10 lines worth of comments from the start so the code posted begins on line 11, if that makes any sense) #include <iostream> #include <string> #include <iomanip> #include <cmath> using namespace std; int main () { float celsius; float farenheit; std::cout << "**************************" << endl; std::cout << "*4001COMP-Lab5-Question 1*" << endl; std::cout << "**************************" << endl << endl; std::cout << "Please enter a temperature in farenheit: "; std::cin >> farenheit >> endl; std::cout << "Temperature (farenheit): " << endl; std::cout << "Temperature (celsius): " << celsius << endl; std::cin.get(); return 0; } Everytime I try to run this program I get a heap of errors with this one appearing every time: 1m:\visual studio 2010\projects\week 5\week 5\main.cpp(26): error C2678: binary '' : no operator found which takes a left-hand operand of type 'std::basic_istream<_Elem,_Traits' (or there is no acceptable conversion) I've tried everything I can think of to get rid of this error but it reappears every time, any idea on how to fix this?

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• Any workarounds for non-static member array initialization?

  - by TomiJ

  In C++, it's not possible to initialize array members in the initialization list, thus member objects should have default constructors and they should be properly initialized in the constructor. Is there any (reasonable) workaround for this apart from not using arrays? [Anything that can be initialized using only the initialization list is in our application far preferable to using the constructor, as that data can be allocated and initialized by the compiler and linker, and every CPU clock cycle counts, even before main. However, it is not always possible to have a default constructor for every class, and besides, reinitializing the data again in the constructor rather defeats the purpose anyway.] E.g. I'd like to have something like this (but this one doesn't work): class OtherClass { private: int data; public: OtherClass(int i) : data(i) {}; // No default constructor! }; class Foo { private: OtherClass inst[3]; // Array size fixed and known ahead of time. public: Foo(...) : inst[0](0), inst[1](1), inst[2](2) {}; }; The only workaround I'm aware of is the non-array one: class Foo { private: OtherClass inst0; OtherClass inst1; OtherClass inst2; OtherClass *inst[3]; public: Foo(...) : inst0(0), inst1(1), inst2(2) { inst[0]=&inst0; inst[1]=&inst1; inst[2]=&inst2; }; }; Edit: It should be stressed that OtherClass has no default constructor, and that it is very desirable to have the linker be able to allocate any memory needed (one or more static instances of Foo will be created), using the heap is essentially verboten. I've updated the examples above to highlight the first point.

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• C# language questions

  - by Water Cooler v2

  1) What is int? Is it any different from the struct System.Int32? I understand that the former is a C# alias (typedef or #define equivalant) for the CLR type System.Int32. Is this understanding correct? 2) When we say: IComparable x = 10; Is that like saying: IComparable x = new System.Int32(); But we can't new a struct, right? or in C like syntax: struct System.In32 *x; x=>someThing = 10; 3) What is String with a capitalized S? I see in Reflector that it is the sealed String class, which, of course, is a reference type, unlike the System.Int32 above, which is a value type. What is string, with an uncapitalized s, though? Is that also the C# alias for this class? Why can I not see the alias definitions in Reflector? 4) Try to follow me down this subtle train of thought, if you please. We know that a storage location of a particular type can only access properties and members on its interface. That means: Person p = new Customer(); p.Name = "Water Cooler v2"; // legal because as Name is defined on Person. but // illegal without an explicit cast even though the backing // store is a Customer, the storage location is of type // Person, which doesn't support the member/method being // accessed/called. p.GetTotalValueOfOrdersMade(); Now, with that inference, consider this scenario: int i = 10; // obvious System.object defines no member to // store an integer value or any other value in. // So, my question really is, when the integer is // boxed, what is the *type* it is actually boxed to. // In other words, what is the type that forms the // backing store on the heap, for this operation? object x = i;

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• How to synchronize access to many objects

  - by vividos

  I have a thread pool with some threads (e.g. as many as number of cores) that work on many objects, say thousands of objects. Normally I would give each object a mutex to protect access to its internals, lock it when I'm doing work, then release it. When two threads would try to access the same object, one of the threads has to wait. Now I want to save some resources and be scalable, as there may be thousands of objects, and still only a hand full of threads. I'm thinking about a class design where the thread has some sort of mutex or lock object, and assigns the lock to the object when the object should be accessed. This would save resources, as I only have as much lock objects as I have threads. Now comes the programming part, where I want to transfer this design into code, but don't know quite where to start. I'm programming in C++ and want to use Boost classes where possible, but self written classes that handle these special requirements are ok. How would I implement this? My first idea was to have a boost::mutex object per thread, and each object has a boost::shared_ptr that initially is unset (or NULL). Now when I want to access the object, I lock it by creating a scoped_lock object and assign it to the shared_ptr. When the shared_ptr is already set, I wait on the present lock. This idea sounds like a heap full of race conditions, so I sort of abandoned it. Is there another way to accomplish this design? A completely different way?

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• Slowing process creation under Java?

  - by oconnor0

  I have a single, large heap (up to 240GB, though in the 20-40GB range for most of this phase of execution) JVM [1] running under Linux [2] on a server with 24 cores. We have tens of thousands of objects that have to be processed by an external executable & then load the data created by those executables back into the JVM. Each executable produces about half a megabyte of data (on disk) that when read right in, after the process finishes, is, of course, larger. Our first implementation was to have each executable handle only a single object. This involved the spawning of twice as many executables as we had objects (since we called a shell script that called the executable). Our CPU utilization would start off high, but not necessarily 100%, and slowly worsen. As we began measuring to see what was happening we noticed that the process creation time [3] continually slows. While starting at sub-second times it would eventually grow to take a minute or more. The actual processing done by the executable usually takes less than 10 seconds. Next we changed the executable to take a list of objects to process in an attempt to reduce the number of processes created. With batch sizes of a few hundred (~1% of our current sample size), the process creation times start out around 2 seconds & grow to around 5-6 seconds. Basically, why is it taking so long to create these processes as execution continues? [1] Oracle JDK 1.6.0_22 [2] Red Hat Enterprise Linux Advanced Platform 5.3, Linux kernel 2.6.18-194.26.1.el5 #1 SMP [3] Creation of the ProcessBuilder object, redirecting the error stream, and starting it.

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• My HTML5 web app crashes and I have no clue how to debug

  - by Shouvik

  Hi All, I have written a word game using HTML5 canvas tag and a little bit of audio. I developed the application on the chrome web browser on a linux system. Recently during the testing phase it was tried on safari 5.0.3 on Mac and the webpage froze. Not just the canvas element, but interactive element on the page froze. I have at some times experienced this problem on google chrome when I was developing but since the console did not throw any error before this happened, I did not give it much credence. Now as per requirements I am supposed to support both chrome and safari but this dismal performance on safari has left me shocked and I cannot see what error can be thrown which might lead to such a situation. Worse yet the CPU usage on using this application peaks to 70-80percent on my 2yr old macbook running ubuntu... I can only but pity the person who uses mac to operate this app, which undoubtedly is a heavier OS. Could someone help me out with a place I can start with to find out what exactly is causing this issue. I have run profiles on this webapp on google chromes console and noticed that in the heap spanshot value increases steadily with the playing of the game, specifically (root) value which jumps up by 900 counts. Any help would be very appreciated! Thanks EDIT: I don't know if this helps, but I have noticed that even on refreshing the page after the app becomes unresponsive the page reloads and I am still not able to interact with the page elements but the tab scroll bar continues to work and I can see my application window completely. So to summaries the tab stops accepting any sort of user interaction inside the page. Edit2: Nop. It doesn't work still... The app crashes on double click on the canvas element. The console is not throwing any errors either! =/ I have noticed this problem is isolated only to safari!

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• Variable Scoping in a method and its persistence in C++

  - by de costo

  Consider the following public method that adds an integer variable to a vector of ints(private member) in a class in C++. KoolMethod() { int x; x = 10; KoolList.Add(x); } Vector<int>KoolList; But is this a valid addition to a vector ??? Upon calling the method, it creates a local variable. The scope of this local variable ends the moment the execution control leaves the method. And since this local variable is allocated on a stack(on the method call), any member of KoolList points to an invalid memory location in deallocated stack which may or may not contain the expected value of x. Is this an accurate description of above mechanism ?? Is there a need for creating an int in heap storage using "new" operator everytime a value needs to be added to the vector like described below ????: KoolMethod() { int *x = new int(); *x = 10; KoolList.Add(x); } Vector<int*>KoolList;

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• In Maven 2, Is it possible to specify a mirror for everything, but allow for failover to direct repo

  - by Justin Searls

  I understand that part of the appeal of setting up a Maven mirror, such as the following: <mirror> <id>nexus</id> <name>Maven Repository</name> <mirrorOf>*</mirrorOf> <url>http://server:8081/nexus/content/groups/public</url> </mirror> ... is that the documentation states, "You can force Maven to use a single repository by having it mirror all repository requests." However, is this also an indication that by having a * mirror set up each workstation [b]must[/b] be forced to go through the mirror? I ask because I would like each workstation to failover and connect directly to whatever public repositories it knows about in the event that Nexus can't resolve a dependency or plugin. (In a perfect world, each developer has the access necessary to add additional proxy repositories as needed. However, sometimes that access isn't available; sometimes the Nexus server goes down; sometimes it suffers a Java heap error.) Is this "mirror but go ahead and connect directly to public repos" failover configuration possible in Maven 2? Will it be in Maven 3?

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• API server not function ["The connection has been reset"]

  - by Miguel Beltrán

  I'm having some troubles with one of my servers. I've done an application with two servers, one the frontend that grabs the data of server API (Ubuntu server). Well, yesterday had a lot of visits and the API server stop functioning but: -I can do stuff in MySQL by SSH. -The memory usage is ok. -The logs are ok. -The bandwitch usage is ok. -If i restart the server or Apache2, function by some time (3-4 minutes). And the most important i think if i tries to access to API (Is rest-style with http) it puts me the Firefox error "The connection has been reset". I'd tried: -Restart the server -Restart Apache2 -Restart MySQL -Viewed the logs of Apache2/MySQL I don't know too much about systems so i don't know what to do more.

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• php-fpm version 5.4 with nginx constantly restarting

  - by endyourif

  I just upgraded my php version from 5.3.x to 5.4.x and since doing this - memory has dropped signifincantly! - however, I'm constantly getting these in my php5-fpm.log: [18-Sep-2012 15:11:34] WARNING: [pool www] child 8981 exited on signal 11 (SIGSEGV - core dumped) after 65.813370 seconds from start [18-Sep-2012 15:11:34] NOTICE: [pool www] child 8988 started [18-Sep-2012 15:12:09] WARNING: [pool www] child 8988 exited on signal 11 (SIGSEGV - core dumped) after 35.185071 seconds from start [18-Sep-2012 15:12:09] NOTICE: [pool www] child 8990 started [18-Sep-2012 15:12:17] WARNING: [pool www] child 8990 exited on signal 11 (SIGSEGV - core dumped) after 8.277977 seconds from start [18-Sep-2012 15:12:17] NOTICE: [pool www] child 8992 started [18-Sep-2012 15:12:18] WARNING: [pool www] child 8982 exited on signal 11 (SIGSEGV - core dumped) after 109.550089 seconds from start [18-Sep-2012 15:12:18] NOTICE: [pool www] child 8995 started [18-Sep-2012 15:12:18] WARNING: [pool www] child 8985 exited on signal 11 (SIGSEGV - core dumped) after 109.668554 seconds from start [18-Sep-2012 15:12:18] NOTICE: [pool www] child 8996 started From what I can gather this is php silently dying? I'm running basic Wordpress sites that keep popping up with 502 errors while php-fpm is constantly spinning up new processes.

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• How to install and use Tally ERP 9 in Wine

  - by askmish

  I am trying to run Tally ERP 9 (http://www.tallysolutions.com/), post-installation in wine 1.7. I am getting an "out of memory" error, the moment it starts(at the tally splash screen). I then have no option other than to close it. OS: Xubuntu 12.04.3 Wine: 1.6\1.7.9 How have I installed: Inserted the Tally Installation CD, clicked on the tally installer executable. Installed by following the setup. Configured for multi-user, client configuration. Server is at a specified LAN address running on Windows. Then once installation is done. Clicked on the executable/ran from command line for tally.exe Please guide.

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• Choice of operating systems for a Rackspace cloud installation

  - by riteshmnayak

  I am planning to use Rackspace cloud services to host a java web application and also run apace for wordpress and trac. What would be a stable operating system to host such an application. My requirements are that the core OS bundle should be minimalistic (so I can install only what I want), consume very little memory and be performant. I would also need it to contain softwares for the common lamp stack, J2EE stack etc. A supported package manager would be lovely. My choices are listed below. RHEL 5.3 or 5.4 Debian Lenny Ubuntu 8.04 onwards Centos 5.3 or 5.4 Arch 2009.02 Gentoo 2008.0 or 10.1 Fedora 11 or 12 PS: can somebody add the rackspace tag to this? Edit to remove this line as well. Thanks

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• OS X 10.9 Mavericks Kernel Panics out of the box

  - by Kevin

  OS X Kernel panics after a fresh install of OS X 10.9 on a 17" Macbook Pro. Anonymous UUID: D002464D-24B7-C2B5-3D83-1C0B02873B29 Wed Oct 30 11:08:17 2013 panic(cpu 1 caller 0xffffff8006edc19e): Kernel trap at 0xffffff7f88e0a96c, type 14=page fault, registers: CR0: 0x000000008001003b, CR2: 0xffffef7f88e309b8, CR3: 0x0000000009c2d000, CR4: 0x0000000000000660 RAX: 0x0fffffd0c7b30000, RBX: 0xffffef7f88e309b0, RCX: 0x0000000000000001, RDX: 0x000002f384d06471 RSP: 0xffffff80eff03d80, RBP: 0xffffff80eff03e70, RSI: 0x0000031384cfb168, RDI: 0xffffff80e8f05148 R8: 0xffffff801b0f8670, R9: 0x0000000000000005, R10: 0x0000000000004a24, R11: 0x0000000000000202 R12: 0xffffff801938b800, R13: 0x0000000000000005, R14: 0xffffff80e8f05148, R15: 0xffffff7f88e2ee20 RFL: 0x0000000000010006, RIP: 0xffffff7f88e0a96c, CS: 0x0000000000000008, SS: 0x0000000000000010 Fault CR2: 0xffffef7f88e309b8, Error code: 0x0000000000000002, Fault CPU: 0x1 Backtrace (CPU 1), Frame : Return Address 0xffffff80eff03a10 : 0xffffff8006e22f69 0xffffff80eff03a90 : 0xffffff8006edc19e 0xffffff80eff03c60 : 0xffffff8006ef3606 0xffffff80eff03c80 : 0xffffff7f88e0a96c 0xffffff80eff03e70 : 0xffffff7f88e09b89 0xffffff80eff03f30 : 0xffffff8006edda5c 0xffffff80eff03f50 : 0xffffff8006e3757a 0xffffff80eff03f90 : 0xffffff8006e378c8 0xffffff80eff03fb0 : 0xffffff8006ed6aa7 Kernel Extensions in backtrace: com.apple.driver.AppleIntelCPUPowerManagement(216.0)[A6EE4D7B-228E-3A3C-95BA-10ED6F331236]@0xffffff7f88e07000->0xffffff7f88e31fff BSD process name corresponding to current thread: kernel_task Mac OS version: 13A603 Kernel version: Darwin Kernel Version 13.0.0: Thu Sep 19 22:22:27 PDT 2013; root:xnu-2422.1.72~6/RELEASE_X86_64 Kernel UUID: 1D9369E3-D0A5-31B6-8D16-BFFBBB390393 Kernel slide: 0x0000000006c00000 Kernel text base: 0xffffff8006e00000 System model name: MacBookPro5,2 (Mac-F2268EC8) System uptime in nanoseconds: 4634353513870 last loaded kext at 39203945245: com.viscosityvpn.Viscosity.tun 1.0 (addr 0xffffff7f89200000, size 32768) last unloaded kext at 147930318702: com.apple.driver.AppleFileSystemDriver 3.0.1 (addr 0xffffff7f89110000, size 8192) loaded kexts: com.viscosityvpn.Viscosity.tun 1.0 com.viscosityvpn.Viscosity.tap 1.0 com.apple.driver.AudioAUUC 1.60 com.apple.driver.AppleHWSensor 1.9.5d0 com.apple.filesystems.autofs 3.0 com.apple.iokit.IOBluetoothSerialManager 4.2.0f6 com.apple.driver.AGPM 100.14.11 com.apple.driver.AppleMikeyHIDDriver 124 com.apple.driver.AppleHDA 2.5.2fc2 com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport 4.2.0f6 com.apple.GeForceTesla 8.1.8 com.apple.driver.AppleMikeyDriver 2.5.2fc2 com.apple.iokit.IOUserEthernet 1.0.0d1 com.apple.driver.AppleUpstreamUserClient 3.5.13 com.apple.driver.AppleMuxControl 3.4.12 com.apple.driver.ACPI_SMC_PlatformPlugin 1.0.0 com.apple.driver.AppleSMCLMU 2.0.4d1 com.apple.Dont_Steal_Mac_OS_X 7.0.0 com.apple.driver.AppleHWAccess 1 com.apple.driver.AppleMCCSControl 1.1.12 com.apple.driver.AppleLPC 1.7.0 com.apple.driver.SMCMotionSensor 3.0.4d1 com.apple.driver.AppleUSBTCButtons 240.2 com.apple.driver.AppleUSBTCKeyboard 240.2 com.apple.driver.AppleIRController 325.7 com.apple.AppleFSCompression.AppleFSCompressionTypeDataless 1.0.0d1 com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0d1 com.apple.BootCache 35 com.apple.iokit.SCSITaskUserClient 3.6.0 com.apple.driver.XsanFilter 404 com.apple.iokit.IOAHCIBlockStorage 2.4.0 com.apple.driver.AppleUSBHub 650.4.4 com.apple.driver.AppleUSBEHCI 650.4.1 com.apple.driver.AppleFWOHCI 4.9.9 com.apple.driver.AirPort.Brcm4331 700.20.22 com.apple.driver.AppleAHCIPort 2.9.5 com.apple.nvenet 2.0.21 com.apple.driver.AppleUSBOHCI 650.4.1 com.apple.driver.AppleSmartBatteryManager 161.0.0 com.apple.driver.AppleRTC 2.0 com.apple.driver.AppleHPET 1.8 com.apple.driver.AppleACPIButtons 2.0 com.apple.driver.AppleSMBIOS 2.0 com.apple.driver.AppleACPIEC 2.0 com.apple.driver.AppleAPIC 1.7 com.apple.driver.AppleIntelCPUPowerManagementClient 216.0.0 com.apple.nke.applicationfirewall 153 com.apple.security.quarantine 3 com.apple.driver.AppleIntelCPUPowerManagement 216.0.0 com.apple.kext.triggers 1.0 com.apple.iokit.IOSerialFamily 10.0.7 com.apple.AppleGraphicsDeviceControl 3.4.12 com.apple.driver.DspFuncLib 2.5.2fc2 com.apple.vecLib.kext 1.0.0 com.apple.iokit.IOAudioFamily 1.9.4fc11 com.apple.kext.OSvKernDSPLib 1.14 com.apple.iokit.IOBluetoothHostControllerUSBTransport 4.2.0f6 com.apple.iokit.IOSurface 91 com.apple.iokit.IOBluetoothFamily 4.2.0f6 com.apple.nvidia.classic.NVDANV50HalTesla 8.1.8 com.apple.driver.AppleSMBusPCI 1.0.12d1 com.apple.driver.AppleGraphicsControl 3.4.12 com.apple.driver.IOPlatformPluginLegacy 1.0.0 com.apple.driver.AppleBacklightExpert 1.0.4 com.apple.iokit.IOFireWireIP 2.2.5 com.apple.driver.AppleHDAController 2.5.2fc2 com.apple.iokit.IOHDAFamily 2.5.2fc2 com.apple.driver.AppleSMBusController 1.0.11d1 com.apple.nvidia.classic.NVDAResmanTesla 8.1.8 com.apple.driver.IOPlatformPluginFamily 5.5.1d27 com.apple.iokit.IONDRVSupport 2.3.6 com.apple.iokit.IOGraphicsFamily 2.3.6 com.apple.driver.AppleSMC 3.1.6d1 com.apple.driver.AppleUSBMultitouch 240.6 com.apple.iokit.IOUSBHIDDriver 650.4.4 com.apple.driver.AppleUSBMergeNub 650.4.0 com.apple.driver.AppleUSBComposite 650.4.0 com.apple.driver.CoreStorage 380 com.apple.iokit.IOSCSIMultimediaCommandsDevice 3.6.0 com.apple.iokit.IOBDStorageFamily 1.7 com.apple.iokit.IODVDStorageFamily 1.7.1 com.apple.iokit.IOCDStorageFamily 1.7.1 com.apple.iokit.IOAHCISerialATAPI 2.6.0 com.apple.iokit.IOSCSIArchitectureModelFamily 3.6.0 com.apple.iokit.IOUSBUserClient 650.4.4 com.apple.iokit.IOFireWireFamily 4.5.5 com.apple.iokit.IO80211Family 600.34 com.apple.iokit.IOAHCIFamily 2.6.0 com.apple.iokit.IONetworkingFamily 3.2 com.apple.iokit.IOUSBFamily 650.4.4 com.apple.driver.NVSMU 2.2.9 com.apple.driver.AppleEFINVRAM 2.0 com.apple.driver.AppleEFIRuntime 2.0 com.apple.iokit.IOHIDFamily 2.0.0 com.apple.iokit.IOSMBusFamily 1.1 com.apple.security.sandbox 278.10 com.apple.kext.AppleMatch 1.0.0d1 com.apple.security.TMSafetyNet 7 com.apple.driver.AppleKeyStore 2 com.apple.driver.DiskImages 371.1 com.apple.iokit.IOStorageFamily 1.9 com.apple.iokit.IOReportFamily 21 com.apple.driver.AppleFDEKeyStore 28.30 com.apple.driver.AppleACPIPlatform 2.0 com.apple.iokit.IOPCIFamily 2.8 com.apple.iokit.IOACPIFamily 1.4 com.apple.kec.pthread 1 com.apple.kec.corecrypto 1.0 System Profile: Model: MacBookPro5,2, BootROM MBP52.008E.B05, 2 processors, Intel Core 2 Duo, 2.8 GHz, 8 GB, SMC 1.42f4 Graphics: NVIDIA GeForce 9400M, NVIDIA GeForce 9400M, PCI, 256 MB Graphics: NVIDIA GeForce 9600M GT, NVIDIA GeForce 9600M GT, PCIe, 512 MB Memory Module: BANK 0/DIMM0, 4 GB, DDR3, 1333 MHz, 0x04CD, 0x46332D3130363636434C392D344742535100 Memory Module: BANK 1/DIMM0, 4 GB, DDR3, 1333 MHz, 0x04CD, 0x46332D3130363636434C392D344742535100 AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x8D), Broadcom BCM43xx 1.0 (5.106.98.100.22) Bluetooth: Version 4.2.0f6 12982, 3 services, 15 devices, 1 incoming serial ports Network Service: Wi-Fi, AirPort, en1 Serial ATA Device: Samsung SSD 840 Series, 120.03 GB Serial ATA Device: MATSHITADVD-R UJ-868 USB Device: Built-in iSight USB Device: BRCM2046 Hub USB Device: Bluetooth USB Host Controller USB Device: Apple Internal Keyboard / Trackpad USB Device: IR Receiver Thunderbolt Bus:

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• procdump on w3wp.exe: Only part of a ReadProcessMemory or WriteProcessMemory request was completed.

  - by JakeS

  I'm having a problem with an IIS application that occasionally spikes up in CPU usage, and am trying to use procdump to get a memory dump for examination. I'm running "procdump.exe -64 -mA 9999" where 9999 is the pid of the process. But every time I do it, I get an error: Only part of a ReadProcessMemory or WriteProcessMemory request was completed. Doing this also recycles the apppool, relieving the CPU spike, so I can't keep trying until I get it right. Does anyone know what is going wrong?

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• Ubuntu 11.04 VM shows a black screen in VMware Player

  - by Roel Veldhuizen

  I have a Ubuntu Server 11.04 64 bit VM running on VMware Player 3.1.4 that only shows a black screen. No matter what I try, the screen remains black. The VM has worked the first time. When I reset the machine, it shows the VMware loader and a flickering _ for about a second. Then the screen turns black again. VM settings: Memory: 512MB Processors: 1 HD: 20GB CD: auto detect Floppy: auto detect Network adapter: NAT USB controller: present soundcard: auto detect printer: present display: auto detect I just created a fresh VM and the same happens, so it seems that the problem is consistent.

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• kernel panic with exitcode=0x00000004 and no call trace

  - by litmusconfig

  A bit of background first - I'm trying to configure a MicroBlaze Linux (big-endian version) system on a Xilinx ML506 eval board. The goal is to use the second partition of a CompactFlash card attached to the Xilinx SystemACE controller. So far, root in initramfs works and after boot, I can mount and use said partition, no problem. But if I try to use it right from the getgo with the "root=/dev/xsa2" kernel command line parameter, the system hangs with [...] Freeing unused kernel memory: 143k freed Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000004 And that's it - no regdump, no call trace, no further nothing from the serial console, even though kernel has been configured with debugging enabled. Now, I'm pretty new at this, so is there something else I should be doing to see something more informative from the kernel?

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