Landing for pliard@chromium.org: Remove static initializers in v8.

src/v8.cc

Index: src/v8.cc
===================================================================
--- src/v8.cc	(revision 11005)
+++ src/v8.cc	(working copy)
@@ -36,6 +36,8 @@
 #include "hydrogen.h"
 #include "lithium-allocator.h"
 #include "log.h"
+#include "once.h"
+#include "platform.h"
 #include "runtime-profiler.h"
 #include "serialize.h"
 #include "store-buffer.h"
@@ -43,8 +45,7 @@
 namespace v8 {
 namespace internal {
 
-static Mutex* init_once_mutex = OS::CreateMutex();
-static bool init_once_called = false;
+V8_DECLARE_ONCE(init_once);
 
 bool V8::is_running_ = false;
 bool V8::has_been_set_up_ = false;
@@ -53,7 +54,8 @@
 bool V8::use_crankshaft_ = true;
 List<CallCompletedCallback>* V8::call_completed_callbacks_ = NULL;
 
-static Mutex* entropy_mutex = OS::CreateMutex();
+static LazyMutex entropy_mutex = LAZY_MUTEX_INITIALIZER;
+
 static EntropySource entropy_source;
 
 
@@ -117,7 +119,7 @@
       state[i] = FLAG_random_seed;
     } else if (entropy_source != NULL) {
       uint32_t val;
-      ScopedLock lock(entropy_mutex);
+      ScopedLock lock(entropy_mutex.Pointer());
       entropy_source(reinterpret_cast<unsigned char*>(&val), sizeof(uint32_t));
       state[i] = val;
     } else {
@@ -237,12 +239,7 @@
   return heap_number;
 }
 
-
-void V8::InitializeOncePerProcess() {
-  ScopedLock lock(init_once_mutex);
-  if (init_once_called) return;
-  init_once_called = true;
-
+void V8::InitializeOncePerProcessImpl() {
   // Set up the platform OS support.
   OS::SetUp();
 
@@ -266,6 +263,12 @@
     FLAG_gc_global = true;
     FLAG_max_new_space_size = (1 << (kPageSizeBits - 10)) * 2;
   }
+
+  LOperand::SetUpCaches();
 }
 
+void V8::InitializeOncePerProcess() {
+  CallOnce(&init_once, &InitializeOncePerProcessImpl);
+}
+
 } }  // namespace v8::internal