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Thread: fix a crash on Windows due to data race condition on Thread::m_start_finished_mutex (#6515)

This commit is contained in:
Loïc Blot 2017-10-10 12:27:08 +02:00 committed by SmallJoker
parent 9dc1f2d638
commit 0129c9a9dd
1 changed files with 6 additions and 2 deletions
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8
src/threading/thread.cpp
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@ -103,8 +103,8 @@ Thread::~Thread()
kill();
// Make sure start finished mutex is unlocked before it's destroyed
m_start_finished_mutex.try_lock();
m_start_finished_mutex.unlock();
if (m_start_finished_mutex.try_lock())
m_start_finished_mutex.unlock();
}
@ -267,6 +267,10 @@ DWORD WINAPI Thread::threadProc(LPVOID param)
thr->m_retval = thr->run();
thr->m_running = false;
// Unlock m_start_finished_mutex to prevent data race condition on Windows.
// On Windows with VS2017 build TerminateThread is called and this mutex is not
// released. We try to unlock it from caller thread and it's refused by system.
thr->m_start_finished_mutex.unlock();
g_logger.deregisterThread();
// 0 is returned here to avoid an unnecessary ifdef clause