fatal error createmutex return null Johns Island South Carolina

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fatal error createmutex return null Johns Island, South Carolina

C++ Copy #include #include #define THREADCOUNT 2 HANDLE ghMutex; DWORD WINAPI WriteToDatabase( LPVOID ); int main( void ) { HANDLE aThread[THREADCOUNT]; DWORD ThreadID; int i; // Create a mutex Otherwise, the calling thread does not obtain ownership of the mutex. Kernel object names must follow the guidelines outlined for Terminal Services so that applications can support multiple users. Any ideas? [edit] I want call MakeList() in multiple threads later, I expect problems too.

I'm still thinking about semaptores in POSIX manner - acquired means it's acquired regardless of process accessing it. 0 Discussion Starter Cybulski 5 8 Years Ago Ok, I got working threads, Cover an unusual board with minimum chess rooks Why is the spacesuit design so strange in Sunshine? However, every time I call the CreateMutex function to create the handles, I get a NULL return value. If lpName matches the name of an existing event, semaphore, waitable timer, job, or file-mapping object, the function fails and the GetLastError function returns ERROR_INVALID_HANDLE.

How do investigators always know the logged flight time of the pilots? Downloads and tools Windows 10 dev tools Visual Studio Windows SDK Windows Store badges Essentials API reference (Windows apps) API reference (desktop apps) Code samples How-to guides (Windows apps) Learning resources Still there may be a trouble when TCHAR and char are mixed. I was able to install it in Linux because the website: … Writing PCM as raw data in C/C++ in Windows 6 replies Hello!

The state of a mutex object is signaled when it is not owned by any thread. asked 4 years ago viewed 3306 times active 4 years ago Related 0CreateMutex and ActiveX5Same mutex name for a Windows service and exe in Windows 71CreateMutex with bInitialOwner=true seem to be Browse other questions tagged c++ windows mutex shared-memory or ask your own question. What does かぎのあるヱ mean?

To limit your application to one instance per user, create a locked file in the user's profile directory. Exiting.\n", display); - } - #ifdef XWIN_XF86CONFIG /* Try to read the xorg.conf-style configuration file */ if (!winReadConfigfile ()) @@ -1052,78 +1040,3 @@ InitOutput (ScreenInfo *screenInfo, int winDebug ("InitOutput - Returning.\n"); c++ Cybulski 5 47 posts since Apr 2008 Community Member 3Contributors 17Replies 18Views 8 YearsDiscussion Span 8 Years Ago Last Post by Ancient Dragon 0 Ancient Dragon 5,243 8 Years Ago So I suppose that this would cause this. –Ian Dec 23 '11 at 3:45 add a comment| up vote 0 down vote CreateMutex() takes LPCTSTR as last argument.

There are several ways to check for thisdepending on what programming language is used. savedlema 17 159 posts since Sep 2012 Community Member group tuple values with tolerance and average Last Post 2 Hours Ago Dear All, I have a very long list of values To get over this problem you need something like ... // in MultiReader.cpp ... Otherwise, a thread must use one of the wait functions to request ownership.

I can comment out Wait function, Release function. Yes No Additional feedback? 1500 characters remaining Submit Skip this Thank you! For more information, see Synchronization Object Security and Access Rights. The single-object wait functions return when the state of the specified object is signaled.

But I think for security reasons, every time I open Internet … Program encouters a problem a needs to close everytime i run my program 1 reply Everytime i run my For more information, see Mutex Objects. If this parameter is NULL, the handle cannot be inherited by child processes. Doğukan 5 posts since Oct 2016 Newbie Member More Recommended Articles About Us Contact Us Donate Advertising Vendor Program Terms of Service Newsletter Archive Community Forums Recent Articles © 2002 -

Can somebody explain the problem with using bInitialOwner = TRUE? I need to read more about parameters of these functions when I get back home, but MSDN is pretty hard lecture for me. Using Mutex Objects You can use a mutex object to protect a shared resource from simultaneous access by multiple threads or processes. Requirements Minimum supported client Windows XP [desktop apps | Windows Store apps] Minimum supported server Windows Server 2003 [desktop apps | Windows Store apps] Header WinBase.h on Windows XP, Windows Server 2003, Windows Vista, Windows 7, Windows

while( dwCount < 20 ) { dwWaitResult = WaitForSingleObject( ghMutex, // handle to mutex INFINITE); // no time-out interval switch (dwWaitResult) { // The thread got ownership of the mutex case Yes No Additional feedback? 1500 characters remaining Submit Skip this Thank you! The multiple-object wait functions can be instructed to return either when any one or when all of the specified objects are signaled. Try this code and see if it changes anything: d_mutex_to_h = CreateMutex(NULL, FALSE, _T("your_mutex_name_here")); share|improve this answer answered Dec 23 '11 at 2:21 Pavel Zhuravlev 1,6201913 This would fail

I have so strange problem... The screen rotates and the data disappears. In the United States is racial, ethnic, or national preference an acceptable hiring practice for departments or companies in some situations? If lpName is NULL, the mutex object is created without a name.

Updated version of cygwin-fix-silent-dup-error.patch attached really fixes it. See ASP.NET Ajax CDN Terms of Use – http://www.asp.net/ajaxlibrary/CDN.ashx. ]]> Developer resources Microsoft developer Windows Windows Dev Center Windows What is the most expensive item I could buy with £50? When using this technique, you should set the bInitialOwner flag to FALSE; otherwise, it can be difficult to be certain which process has initial ownership.

I don't want it static too! Index Nav: [DateIndex] [SubjectIndex] [AuthorIndex] [ThreadIndex] Message Nav: [DatePrev][DateNext] [ThreadPrev][ThreadNext] Other format: [Raw text] PATCH: Fix -silent-dup-error (for real this time) From: Jon TURNEY

Class will be part of singleton. 0 mitrmkar 1,056 8 Years Ago hReaderMutex is not defined anywhere, hence the error. c++ This article has been dead for over six months. The __finally block of code is executed no matter how the __try block terminates (unless the __try block includes a call to the TerminateThread function). Name comparison is case sensitive.