Cleanup Semaphore class.

src/optimizing-compiler-thread.h

 // Copyright 2012 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 32 matching lines @@
 class SharedFunctionInfo;
 
 class OptimizingCompilerThread : public Thread {
  public:
   explicit OptimizingCompilerThread(Isolate *isolate) :
       Thread("OptimizingCompilerThread"),
 #ifdef DEBUG
       thread_id_(0),
 #endif
       isolate_(isolate),
-      stop_semaphore_(OS::CreateSemaphore(0)),
-      input_queue_semaphore_(OS::CreateSemaphore(0)) {
+      stop_semaphore_(0),
+      input_queue_semaphore_(0) {
     NoBarrier_Store(&stop_thread_, static_cast<AtomicWord>(CONTINUE));
     NoBarrier_Store(&queue_length_, static_cast<AtomicWord>(0));
   }
+  ~OptimizingCompilerThread() {}
 
   void Run();
   void Stop();
   void Flush();
   void QueueForOptimization(OptimizingCompiler* optimizing_compiler);
   void InstallOptimizedFunctions();
 
   inline bool IsQueueAvailable() {
     // We don't need a barrier since we have a data dependency right
     // after.
     Atomic32 current_length = NoBarrier_Load(&queue_length_);
 
     // This can be queried only from the execution thread.
     ASSERT(!IsOptimizerThread());
     // Since only the execution thread increments queue_length_ and
     // only one thread can run inside an Isolate at one time, a direct
     // doesn't introduce a race -- queue_length_ may decreased in
     // meantime, but not increased.
     return (current_length < FLAG_concurrent_recompilation_queue_length);
   }
 
 #ifdef DEBUG
   bool IsOptimizerThread();
 #endif
 
-  ~OptimizingCompilerThread() {
-    delete input_queue_semaphore_;
-    delete stop_semaphore_;
-#ifdef DEBUG
-#endif
-  }
-
  private:
   enum StopFlag { CONTINUE, STOP, FLUSH };
 
   void FlushInputQueue(bool restore_function_code);
   void FlushOutputQueue(bool restore_function_code);
 
   void CompileNext();
 
 #ifdef DEBUG
   int thread_id_;
   Mutex thread_id_mutex_;
 #endif
 
   Isolate* isolate_;
-  Semaphore* stop_semaphore_;
-  Semaphore* input_queue_semaphore_;
+  Semaphore stop_semaphore_;
+  Semaphore input_queue_semaphore_;
   UnboundQueue<OptimizingCompiler*> input_queue_;
   UnboundQueue<OptimizingCompiler*> output_queue_;
   Mutex install_mutex_;
   volatile AtomicWord stop_thread_;
   volatile Atomic32 queue_length_;
   TimeDelta time_spent_compiling_;
   TimeDelta time_spent_total_;
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OPTIMIZING_COMPILER_THREAD_H_