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

src/runtime-profiler.cc

Index: src/runtime-profiler.cc
===================================================================
--- src/runtime-profiler.cc	(revision 11005)
+++ src/runtime-profiler.cc	(working copy)
@@ -72,10 +72,10 @@
 
 
 Atomic32 RuntimeProfiler::state_ = 0;
-// TODO(isolates): Create the semaphore lazily and clean it up when no
-// longer required.
-Semaphore* RuntimeProfiler::semaphore_ = OS::CreateSemaphore(0);
 
+// TODO(isolates): Clean up the semaphore when it is no longer required.
+static LazySemaphore<0>::type semaphore = LAZY_SEMAPHORE_INITIALIZER;
+
 #ifdef DEBUG
 bool RuntimeProfiler::has_been_globally_set_up_ = false;
 #endif
@@ -406,7 +406,7 @@
   // undid the decrement done by the profiler thread. Increment again
   // to get the right count of active isolates.
   NoBarrier_AtomicIncrement(&state_, 1);
-  semaphore_->Signal();
+  semaphore.Pointer()->Signal();
 }
 
 
@@ -419,7 +419,7 @@
   Atomic32 old_state = NoBarrier_CompareAndSwap(&state_, 0, -1);
   ASSERT(old_state >= -1);
   if (old_state != 0) return false;
-  semaphore_->Wait();
+  semaphore.Pointer()->Wait();
   return true;
 }
 
@@ -435,7 +435,7 @@
   if (new_state == 0) {
     // The profiler thread is waiting. Wake it up. It must check for
     // stop conditions before attempting to wait again.
-    semaphore_->Signal();
+    semaphore.Pointer()->Signal();
   }
   thread->Join();
   // The profiler thread is now stopped. Undo the increment in case it