Zero closed ThreadCondition handles

third_party/WebKit/Source/wtf/ThreadingWin.cpp

 /*
  * Copyright (C) 2007, 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Google Inc. All rights reserved.
  * Copyright (C) 2009 Torch Mobile, Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
@@ skipping 314 matching lines @@
     m_condition.m_blockQueue = CreateSemaphore(0, 0, MaxSemaphoreCount, 0);
     m_condition.m_unblockLock = CreateMutex(0, 0, 0);
 
     if (!m_condition.m_blockLock || !m_condition.m_blockQueue || !m_condition.m_unblockLock) {
         if (m_condition.m_blockLock)
             CloseHandle(m_condition.m_blockLock);
         if (m_condition.m_blockQueue)
             CloseHandle(m_condition.m_blockQueue);
         if (m_condition.m_unblockLock)
             CloseHandle(m_condition.m_unblockLock);
+
+        m_condition.m_blockLock = nullptr;
+        m_condition.m_blockQueue = nullptr;
+        m_condition.m_unblockLock = nullptr;
     }
 }
 
 ThreadCondition::~ThreadCondition()
 {
-    CloseHandle(m_condition.m_blockLock);
-    CloseHandle(m_condition.m_blockQueue);
-    CloseHandle(m_condition.m_unblockLock);
+    if (m_condition.m_blockLock)
+        CloseHandle(m_condition.m_blockLock);
+    if (m_condition.m_blockQueue)
+        CloseHandle(m_condition.m_blockQueue);
+    if (m_condition.m_unblockLock)
+        CloseHandle(m_condition.m_unblockLock);
 }
 
 void ThreadCondition::wait(MutexBase& mutex)
 {
     m_condition.timedWait(mutex.impl(), INFINITE);
 }
 
 bool ThreadCondition::timedWait(MutexBase& mutex, double absoluteTime)
 {
     DWORD interval = absoluteTimeToWaitTimeoutInterval(absoluteTime);
@@ skipping 47 matching lines @@
 
 void willCreateThread()
 {
     s_threadCreated = true;
 }
 #endif
 
 } // namespace WTF
 
 #endif // OS(WIN)