text: /*
   * 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
   * copyright notice, this list of conditions and the following disclaimer
   * in the documentation and/or other materials provided with the
   * distribution.
   *     * Neither the name of Google Inc. nor the names of its
   * contributors may be used to endorse or promote products derived from
   * this software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
   * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
   * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   * 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 "third_party/blink/renderer/platform/wtf/wtf.h"
  
  #include "third_party/blink/renderer/platform/wtf/allocator/partitions.h"
  #include "third_party/blink/renderer/platform/wtf/assertions.h"
  #include "third_party/blink/renderer/platform/wtf/functional.h"
  #include "third_party/blink/renderer/platform/wtf/stack_util.h"
  #include "third_party/blink/renderer/platform/wtf/text/atomic_string.h"
  #include "third_party/blink/renderer/platform/wtf/text/string_statics.h"
  #include "third_party/blink/renderer/platform/wtf/thread_specific.h"
  #include "third_party/blink/renderer/platform/wtf/threading.h"
  #include "third_party/blink/renderer/platform/wtf/typed_arrays/array_buffer_contents.h"
  
  namespace WTF {
  
  extern void InitializeThreading();
  
  bool g_initialized;
  void (*g_call_on_main_thread_function)(MainThreadFunction, void*);
  ThreadIdentifier g_main_thread_identifier;
  
  namespace internal {
  
  void CallOnMainThread(MainThreadFunction* function, void* context) {
    (*g_call_on_main_thread_function)(function, context);
  }
  
  }  // namespace internal
  
  bool IsMainThread() {
    return CurrentThread() == g_main_thread_identifier;
  }
  
  void Initialize(void (*call_on_main_thread_function)(MainThreadFunction,
                                                       void*)) {
    // WTF, and Blink in general, cannot handle being re-initialized.
    // Make that explicit here.
    CHECK(!g_initialized);
    g_initialized = true;
    InitializeCurrentThread();
    g_main_thread_identifier = CurrentThread();
  
    InitializeThreading();
  
    g_call_on_main_thread_function = call_on_main_thread_function;
    internal::InitializeMainThreadStackEstimate();
    AtomicString::Init();
    StringStatics::Init();
  }
  
  }  // namespace WTF
  