зеркало из https://github.com/mozilla/gecko-dev.git
112 строки
3.8 KiB
C++
112 строки
3.8 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
|
|
/* 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 "nsIThreadManager.h"
|
|
#include "nsThread.h"
|
|
|
|
class nsIRunnable;
|
|
class nsIEventTarget;
|
|
class nsISerialEventTarget;
|
|
class nsIThread;
|
|
|
|
namespace mozilla {
|
|
class IdleTaskManager;
|
|
class SynchronizedEventQueue;
|
|
} // namespace mozilla
|
|
|
|
class BackgroundEventTarget;
|
|
|
|
class nsThreadManager : public nsIThreadManager {
|
|
public:
|
|
NS_DECL_ISUPPORTS
|
|
NS_DECL_NSITHREADMANAGER
|
|
|
|
static nsThreadManager& get();
|
|
|
|
static void InitializeShutdownObserver();
|
|
|
|
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& aThread);
|
|
|
|
// 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& aThread);
|
|
|
|
// Returns the current thread. Returns null if OOM or if ThreadManager isn't
|
|
// initialized. Creates the nsThread if one does not exist yet.
|
|
nsThread* GetCurrentThread();
|
|
|
|
// Returns true iff the currently running thread has an nsThread associated
|
|
// with it (ie; whether this is a thread that we can dispatch runnables to).
|
|
bool IsNSThread() const;
|
|
|
|
// CreateCurrentThread sets up an nsThread for the current thread. It uses the
|
|
// event queue and main thread flags passed in. It should only be called once
|
|
// for the current thread. After it returns, GetCurrentThread() will return
|
|
// the thread that was created. GetCurrentThread() will also create a thread
|
|
// (lazily), but it doesn't allow the queue or main-thread attributes to be
|
|
// specified.
|
|
nsThread* CreateCurrentThread(mozilla::SynchronizedEventQueue* aQueue,
|
|
nsThread::MainThreadFlag aMainThread);
|
|
|
|
nsresult DispatchToBackgroundThread(nsIRunnable* aEvent,
|
|
uint32_t aDispatchFlags);
|
|
|
|
already_AddRefed<nsISerialEventTarget> CreateBackgroundTaskQueue(
|
|
const char* aName);
|
|
|
|
// Returns the maximal number of threads that have been in existence
|
|
// simultaneously during the execution of the thread manager.
|
|
uint32_t GetHighestNumberOfThreads();
|
|
|
|
~nsThreadManager();
|
|
|
|
void EnableMainThreadEventPrioritization();
|
|
void FlushInputEventPrioritization();
|
|
void SuspendInputEventPrioritization();
|
|
void ResumeInputEventPrioritization();
|
|
|
|
static bool MainThreadHasPendingHighPriorityEvents();
|
|
|
|
nsIThread* GetMainThreadWeak() { return mMainThread; }
|
|
|
|
private:
|
|
nsThreadManager();
|
|
|
|
nsresult SpinEventLoopUntilInternal(nsINestedEventLoopCondition* aCondition,
|
|
bool aCheckingShutdown);
|
|
|
|
static void ReleaseThread(void* aData);
|
|
|
|
unsigned mCurThreadIndex; // thread-local-storage index
|
|
RefPtr<mozilla::IdleTaskManager> mIdleTaskManager;
|
|
RefPtr<nsThread> mMainThread;
|
|
PRThread* mMainPRThread;
|
|
mozilla::Atomic<bool, mozilla::SequentiallyConsistent> mInitialized;
|
|
|
|
// Shared event target used for background runnables.
|
|
RefPtr<BackgroundEventTarget> mBackgroundEventTarget;
|
|
};
|
|
|
|
#define NS_THREADMANAGER_CID \
|
|
{ /* 7a4204c6-e45a-4c37-8ebb-6709a22c917c */ \
|
|
0x7a4204c6, 0xe45a, 0x4c37, { \
|
|
0x8e, 0xbb, 0x67, 0x09, 0xa2, 0x2c, 0x91, 0x7c \
|
|
} \
|
|
}
|
|
|
|
#endif // nsThreadManager_h__
|