[Bug 26500] New: Critical section busy wait

wine-bugs at winehq.org wine-bugs at winehq.org
Mon Mar 21 03:52:33 CDT 2011


http://bugs.winehq.org/show_bug.cgi?id=26500

           Summary: Critical section busy wait
           Product: Wine
           Version: 1.3.16
          Platform: All
        OS/Version: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: ntdll
        AssignedTo: wine-bugs at winehq.org
        ReportedBy: vvoznesensky at gmail.com


The critical section machinery (EnterCriticalSection, LeaveCriticalSection,
TryEnterCriticalSection) is realized suboptimal: waiting thread consumes CPU
cycles polling LockCount instead of using system lock like pthread_mutex_lock
do (please look at http://www.jbox.dk/sanos/source/lib/pthread/mutex.c.html ) .

Suggested solution: throw out custom realization and use pthread_mutex_t,
pthread_mutex_lock, pthread_mutex_unlock and pthread_mutex_lock instead.

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