1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/xpcom/threads/nsThreadManager.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,87 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* vim:set ts=2 sw=2 sts=2 et cindent: */
1.6 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.7 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.8 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.9 +
1.10 +#ifndef nsThreadManager_h__
1.11 +#define nsThreadManager_h__
1.12 +
1.13 +#include "mozilla/Mutex.h"
1.14 +#include "nsIThreadManager.h"
1.15 +#include "nsRefPtrHashtable.h"
1.16 +#include "nsThread.h"
1.17 +
1.18 +class nsIRunnable;
1.19 +
1.20 +class nsThreadManager : public nsIThreadManager
1.21 +{
1.22 +public:
1.23 + NS_DECL_ISUPPORTS
1.24 + NS_DECL_NSITHREADMANAGER
1.25 +
1.26 + static nsThreadManager *get() {
1.27 + static nsThreadManager sInstance;
1.28 + return &sInstance;
1.29 + }
1.30 +
1.31 + nsresult Init();
1.32 +
1.33 + // Shutdown all threads. This function should only be called on the main
1.34 + // thread of the application process.
1.35 + void Shutdown();
1.36 +
1.37 + // Called by nsThread to inform the ThreadManager it exists. This method
1.38 + // must be called when the given thread is the current thread.
1.39 + void RegisterCurrentThread(nsThread *thread);
1.40 +
1.41 + // Called by nsThread to inform the ThreadManager it is going away. This
1.42 + // method must be called when the given thread is the current thread.
1.43 + void UnregisterCurrentThread(nsThread *thread);
1.44 +
1.45 + // Returns the current thread. Returns null if OOM or if ThreadManager isn't
1.46 + // initialized.
1.47 + nsThread *GetCurrentThread();
1.48 +
1.49 + // Returns the maximal number of threads that have been in existence
1.50 + // simultaneously during the execution of the thread manager.
1.51 + uint32_t GetHighestNumberOfThreads();
1.52 +
1.53 + // This needs to be public in order to support static instantiation of this
1.54 + // class with older compilers (e.g., egcs-2.91.66).
1.55 + ~nsThreadManager() {}
1.56 +
1.57 +private:
1.58 + nsThreadManager()
1.59 + : mCurThreadIndex(0)
1.60 + , mMainPRThread(nullptr)
1.61 + , mLock(nullptr)
1.62 + , mInitialized(false)
1.63 + , mCurrentNumberOfThreads(1)
1.64 + , mHighestNumberOfThreads(1) {
1.65 + }
1.66 +
1.67 + nsRefPtrHashtable<nsPtrHashKey<PRThread>, nsThread> mThreadsByPRThread;
1.68 + unsigned mCurThreadIndex; // thread-local-storage index
1.69 + nsRefPtr<nsThread> mMainThread;
1.70 + PRThread *mMainPRThread;
1.71 + // This is a pointer in order to allow creating nsThreadManager from
1.72 + // the static context in debug builds.
1.73 + nsAutoPtr<mozilla::Mutex> mLock; // protects tables
1.74 + bool mInitialized;
1.75 +
1.76 + // The current number of threads
1.77 + uint32_t mCurrentNumberOfThreads;
1.78 + // The highest number of threads encountered so far during the session
1.79 + uint32_t mHighestNumberOfThreads;
1.80 +};
1.81 +
1.82 +#define NS_THREADMANAGER_CID \
1.83 +{ /* 7a4204c6-e45a-4c37-8ebb-6709a22c917c */ \
1.84 + 0x7a4204c6, \
1.85 + 0xe45a, \
1.86 + 0x4c37, \
1.87 + {0x8e, 0xbb, 0x67, 0x09, 0xa2, 0x2c, 0x91, 0x7c} \
1.88 +}
1.89 +
1.90 +#endif // nsThreadManager_h__
