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fix EventImpl_Win32::Signal race condition (looks like Broadcast now)

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Glenn Maynard
2006-12-27 09:28:13 +00:00
parent 01bc9b4040
commit e1cd655ab9
1 changed files with 11 additions and 8 deletions
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stepmania/src/arch/Threads/Threads_Win32.cpp
+11 -8
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@@ -390,16 +390,19 @@ bool EventImpl_Win32::Wait( RageTimer *pTimeout )
void EventImpl_Win32::Signal() void EventImpl_Win32::Signal()
{ {
EnterCriticalSection( &m_iNumWaitingLock ); EnterCriticalSection( &m_iNumWaitingLock );
bool bHaveWaiters = (m_iNumWaiting > 0);
if( m_iNumWaiting == 0 )
{
LeaveCriticalSection( &m_iNumWaitingLock );
return;
}
ReleaseSemaphore( m_WakeupSema, 1, 0 );
LeaveCriticalSection( &m_iNumWaitingLock ); LeaveCriticalSection( &m_iNumWaitingLock );
if( bHaveWaiters ) /* The waiter will touch m_WaitersDone. */
{ WaitForSingleObject( m_WaitersDone, INFINITE );
ReleaseSemaphore( m_WakeupSema, 1, 0 );
/* The waiter will touch m_WaitersDone. */
WaitForSingleObject( m_WaitersDone, INFINITE );
}
} }
void EventImpl_Win32::Broadcast() void EventImpl_Win32::Broadcast()