Valgrind cleanliness, part 6: Introduce OS::TearDown, cleaning up 2 mutexes.

src/v8.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 100 matching lines @@
   RegisteredExtension::UnregisterAll();
 
   isolate->TearDown();
   delete isolate;
 
   is_running_ = false;
   has_been_disposed_ = true;
 
   delete call_completed_callbacks_;
   call_completed_callbacks_ = NULL;
+
+  OS::TearDown();
 }
 
 
 static void seed_random(uint32_t* state) {
   for (int i = 0; i < 2; ++i) {
     if (FLAG_random_seed != 0) {
       state[i] = FLAG_random_seed;
     } else if (entropy_source != NULL) {
       uint32_t val;
       ScopedLock lock(entropy_mutex.Pointer());
@@ skipping 110 matching lines @@
   static const double binary_million = 1048576.0;
   r.double_value = binary_million;
   r.uint64_t_value |= random_bits;
   r.double_value -= binary_million;
 
   HeapNumber::cast(heap_number)->set_value(r.double_value);
   return heap_number;
 }
 
 void V8::InitializeOncePerProcessImpl() {
-  // Set up the platform OS support.
   OS::SetUp();
 
   use_crankshaft_ = FLAG_crankshaft;
 
   if (Serializer::enabled()) {
     use_crankshaft_ = false;
   }
 
   CPU::SetUp();
   if (!CPU::SupportsCrankshaft()) {
@@ skipping 16 matching lines @@
   SetUpJSCallerSavedCodeData();
   SamplerRegistry::SetUp();
   ExternalReference::SetUp();
 }
 
 void V8::InitializeOncePerProcess() {
   CallOnce(&init_once, &InitializeOncePerProcessImpl);
 }
 
 } }  // namespace v8::internal