Cleanup Semaphore class.

src/isolate.cc

 // 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 208 matching lines @@
     // of it being optimized away.
     OS::StrNCpy(local_buffer, "PreallocatedMemoryThread shutting down.\n",
                 local_buffer.length());
   }
 
 
  private:
   PreallocatedMemoryThread()
       : Thread("v8:PreallocMem"),
         keep_running_(true),
-        wait_for_ever_semaphore_(OS::CreateSemaphore(0)),
-        data_ready_semaphore_(OS::CreateSemaphore(0)),
+        wait_for_ever_semaphore_(new Semaphore(0)),
+        data_ready_semaphore_(new Semaphore(0)),
         data_(NULL),
         length_(0) {
   }
 
   // Used to make sure that the thread keeps looping even for spurious wakeups.
   bool keep_running_;
 
   // This semaphore is used by the PreallocatedMemoryThread to wait for ever.
   Semaphore* wait_for_ever_semaphore_;
   // Semaphore to signal that the data has been initialized.
@@ skipping 2286 matching lines @@
 
 #ifdef DEBUG
 #define ISOLATE_FIELD_OFFSET(type, name, ignored)                       \
 const intptr_t Isolate::name##_debug_offset_ = OFFSET_OF(Isolate, name##_);
 ISOLATE_INIT_LIST(ISOLATE_FIELD_OFFSET)
 ISOLATE_INIT_ARRAY_LIST(ISOLATE_FIELD_OFFSET)
 #undef ISOLATE_FIELD_OFFSET
 #endif
 
 } }  // namespace v8::internal