Merge WTF::initializeMainThread into WTF::initialize

third_party/WebKit/Source/wtf/WTF.cpp

 /*
  * Copyright (C) 2013 Google Inc. 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
@@ skipping 14 matching lines @@
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "wtf/WTF.h"
 
 #include "wtf/ArrayBufferContents.h"
 #include "wtf/Assertions.h"
+#include "wtf/Functional.h"
 #include "wtf/Partitions.h"
+#include "wtf/Threading.h"
+#include "wtf/text/AtomicString.h"
+#include "wtf/text/StringStatics.h"
 
 namespace WTF {
 
 extern void initializeThreading();
 
 bool s_initialized;
 bool s_shutdown;
+void (*s_callOnMainThreadFunction)(MainThreadFunction, void*);
+ThreadIdentifier s_mainThreadIdentifier;
 
-void initialize()
+namespace internal {
+
+void callOnMainThread(MainThreadFunction* function, void* context)
+{
+    (*s_callOnMainThreadFunction)(function, context);
+}
+
+} // namespace internal
+
+bool isMainThread()
+{
+    return currentThread() == s_mainThreadIdentifier;
+}
+
+void initialize(void (*callOnMainThreadFunction)(MainThreadFunction, void*))
 {
     // WTF, and Blink in general, cannot handle being re-initialized, even if shutdown first.
     // Make that explicit here.
     RELEASE_ASSERT(!s_initialized);
     RELEASE_ASSERT(!s_shutdown);
     s_initialized = true;
     initializeThreading();
+
+    s_callOnMainThreadFunction = callOnMainThreadFunction;
+    s_mainThreadIdentifier = currentThread();
+    AtomicString::init();
+    StringStatics::init();
 }
 
 void shutdown()
 {
     RELEASE_ASSERT(s_initialized);
     RELEASE_ASSERT(!s_shutdown);
     s_shutdown = true;
 }
 
 bool isShutdown()
 {
     return s_shutdown;
 }
 
 } // namespace WTF