Import ConditionVariable class.

src/platform/mutex.cc

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 83 matching lines @@
   int result = pthread_mutex_trylock(mutex);
   if (result == EBUSY) {
     return false;
   }
   ASSERT_EQ(0, result);
   return true;
 }
 
 #elif V8_OS_WIN
 
-static V8_INLINE(void InitializeNativeHandle(CRITICAL_SECTION* cs)) {
+static V8_INLINE(void InitializeNativeHandle(PCRITICAL_SECTION cs)) {
   InitializeCriticalSection(cs);
 }
 
 
-static V8_INLINE(void InitializeRecursiveNativeHandle(CRITICAL_SECTION* cs)) {
+static V8_INLINE(void InitializeRecursiveNativeHandle(PCRITICAL_SECTION cs)) {
   InitializeCriticalSection(cs);
 }
 
 
-static V8_INLINE(void DestroyNativeHandle(CRITICAL_SECTION* cs)) {
+static V8_INLINE(void DestroyNativeHandle(PCRITICAL_SECTION cs)) {
   DeleteCriticalSection(cs);
 }
 
 
-static V8_INLINE(void LockNativeHandle(CRITICAL_SECTION* cs)) {
+static V8_INLINE(void LockNativeHandle(PCRITICAL_SECTION cs)) {
   EnterCriticalSection(cs);
 }
 
 
-static V8_INLINE(void UnlockNativeHandle(CRITICAL_SECTION* cs)) {
+static V8_INLINE(void UnlockNativeHandle(PCRITICAL_SECTION cs)) {
   LeaveCriticalSection(cs);
 }
 
 
-static V8_INLINE(bool TryLockNativeHandle(CRITICAL_SECTION* cs)) {
+static V8_INLINE(bool TryLockNativeHandle(PCRITICAL_SECTION cs)) {
   return TryEnterCriticalSection(cs);
 }
 
 #endif  // V8_OS_POSIX
 
 
 Mutex::Mutex() {
   InitializeNativeHandle(&native_handle_);
 #ifdef DEBUG
   level_ = 0;
 #endif
 }
 
 
 Mutex::~Mutex() {
   DestroyNativeHandle(&native_handle_);
   ASSERT_EQ(0, level_);
 }
 
 
 void Mutex::Lock() {
   LockNativeHandle(&native_handle_);
-#ifdef DEBUG
-  ASSERT_EQ(0, level_);
-  level_++;
-#endif
+  CheckUnheldAndMark();
 }
 
 
 void Mutex::Unlock() {
-#ifdef DEBUG
-  ASSERT_EQ(1, level_);
-  level_--;
-#endif
+  CheckHeldAndUnmark();
   UnlockNativeHandle(&native_handle_);
 }
 
 
 bool Mutex::TryLock() {
   if (!TryLockNativeHandle(&native_handle_)) {
     return false;
   }
-#ifdef DEBUG
-  ASSERT_EQ(0, level_);
-  level_++;
-#endif
+  CheckUnheldAndMark();
   return true;
 }
 
 
 RecursiveMutex::RecursiveMutex() {
   InitializeRecursiveNativeHandle(&native_handle_);
 #ifdef DEBUG
   level_ = 0;
 #endif
 }
@@ skipping 28 matching lines @@
     return false;
   }
 #ifdef DEBUG
   ASSERT_LE(0, level_);
   level_++;
 #endif
   return true;
 }
 
 } }  // namespace v8::internal