author Sriram Ramasubramanian <sriram@mozilla.com>
Wed, 16 Jan 2013 11:26:48 -0800
changeset 119171 154e9ce25e412ecc9df0c0ad50e8cbe25e40ef69
parent 106706 c4f83d9d8243f3f853a5356188164a5fddee2b5a
child 124959 8c4e1ad6d30b0e179ac4d322d18af827a25047f2
permissions -rw-r--r--
Bug 831402: Tablets will have a split action-bar. [r=mfinkle]

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 et cindent: */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef nsThreadManager_h__
#define nsThreadManager_h__

#include "mozilla/Mutex.h"
#include "nsIThreadManager.h"
#include "nsRefPtrHashtable.h"
#include "nsThread.h"

class nsIRunnable;

class nsThreadManager : public nsIThreadManager

  static nsThreadManager *get() {
    return &sInstance;

  nsresult Init();

  // Shutdown all threads.  This function should only be called on the main
  // thread of the application process.
  void Shutdown();

  // Called by nsThread to inform the ThreadManager it exists.  This method
  // must be called when the given thread is the current thread.
  void RegisterCurrentThread(nsThread *thread);

  // Called by nsThread to inform the ThreadManager it is going away.  This
  // method must be called when the given thread is the current thread.
  void UnregisterCurrentThread(nsThread *thread);

  // Returns the current thread.  Returns null if OOM or if ThreadManager isn't
  // initialized.
  nsThread *GetCurrentThread();

  // This needs to be public in order to support static instantiation of this
  // class with older compilers (e.g., egcs-2.91.66).
  ~nsThreadManager() {}

    : mCurThreadIndex(0)
    , mMainPRThread(nullptr)
    , mLock(nullptr)
    , mInitialized(false) {
  static nsThreadManager sInstance;

  nsRefPtrHashtable<nsPtrHashKey<PRThread>, nsThread> mThreadsByPRThread;
  unsigned             mCurThreadIndex;  // thread-local-storage index
  nsRefPtr<nsThread>  mMainThread;
  PRThread           *mMainPRThread;
  // This is a pointer in order to allow creating nsThreadManager from
  // the static context in debug builds.
  nsAutoPtr<mozilla::Mutex> mLock;  // protects tables
  bool                mInitialized;

#define NS_THREADMANAGER_CLASSNAME "nsThreadManager"
#define NS_THREADMANAGER_CID                       \
{ /* 7a4204c6-e45a-4c37-8ebb-6709a22c917c */       \
  0x7a4204c6,                                      \
  0xe45a,                                          \
  0x4c37,                                          \
  {0x8e, 0xbb, 0x67, 0x09, 0xa2, 0x2c, 0x91, 0x7c} \

#endif  // nsThreadManager_h__