Rollback of r11015, r11014, r11011, r11010 in trunk branch.

src/runtime-profiler.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 118 matching lines @@
   int sampler_window_weight_[kSamplerWindowSize];
 
   bool any_ic_changed_;
   bool code_generated_;
   int total_code_generated_;
 
   // Possible state values:
   //   -1            => the profiler thread is waiting on the semaphore
   //   0 or positive => the number of isolates running JavaScript code.
   static Atomic32 state_;
+  static Semaphore* semaphore_;
 
 #ifdef DEBUG
   static bool has_been_globally_set_up_;
 #endif
   static bool enabled_;
 };
 
 
 // Rate limiter intended to be used in the profiler thread.
 class RuntimeProfilerRateLimiter BASE_EMBEDDED {
@@ skipping 29 matching lines @@
 
 void RuntimeProfiler::IsolateExitedJS(Isolate* isolate) {
   Atomic32 new_state = NoBarrier_AtomicIncrement(&state_, -1);
   ASSERT(new_state >= 0);
   USE(new_state);
 }
 
 } }  // namespace v8::internal
 
 #endif  // V8_RUNTIME_PROFILER_H_