The Tor Browser / file comparison
comparison: netwerk/cache2/CacheIOThread.h
netwerk/cache2/CacheIOThread.h
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
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| -1:000000000000 | 0:324a30220368 |
|---|---|
| 1 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 2 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 4 | |
| 5 #ifndef CacheIOThread__h__ | |
| 6 #define CacheIOThread__h__ | |
| 7 | |
| 8 #include "nsIThreadInternal.h" | |
| 9 #include "nsISupportsImpl.h" | |
| 10 #include "prthread.h" | |
| 11 #include "nsTArray.h" | |
| 12 #include "nsAutoPtr.h" | |
| 13 #include "mozilla/Monitor.h" | |
| 14 | |
| 15 class nsIRunnable; | |
| 16 | |
| 17 namespace mozilla { | |
| 18 namespace net { | |
| 19 | |
| 20 class CacheIOThread : public nsIThreadObserver | |
| 21 { | |
| 22 public: | |
| 23 NS_DECL_THREADSAFE_ISUPPORTS | |
| 24 NS_DECL_NSITHREADOBSERVER | |
| 25 | |
| 26 CacheIOThread(); | |
| 27 virtual ~CacheIOThread(); | |
| 28 | |
| 29 enum ELevel { | |
| 30 OPEN_PRIORITY, | |
| 31 READ_PRIORITY, | |
| 32 OPEN, | |
| 33 READ, | |
| 34 MANAGEMENT, | |
| 35 WRITE, | |
| 36 CLOSE, | |
| 37 INDEX, | |
| 38 EVICT, | |
| 39 LAST_LEVEL, | |
| 40 | |
| 41 // This is actually executed as the first level, but we want this enum | |
| 42 // value merely as an indicator while other values are used as indexes | |
| 43 // to the queue array. Hence put at end and not as the first. | |
| 44 XPCOM_LEVEL | |
| 45 }; | |
| 46 | |
| 47 nsresult Init(); | |
| 48 nsresult Dispatch(nsIRunnable* aRunnable, uint32_t aLevel); | |
| 49 // Makes sure that any previously posted event to OPEN or OPEN_PRIORITY | |
| 50 // levels (such as file opennings and dooms) are executed before aRunnable | |
| 51 // that is intended to evict stuff from the cache. | |
| 52 nsresult DispatchAfterPendingOpens(nsIRunnable* aRunnable); | |
| 53 bool IsCurrentThread(); | |
| 54 | |
| 55 /** | |
| 56 * Callable only on this thread, checks if there is an event waiting in | |
| 57 * the event queue with a higher execution priority. If so, the result | |
| 58 * is true and the current event handler should break it's work and return | |
| 59 * from Run() method immediately. The event handler will be rerun again | |
| 60 * when all more priority events are processed. Events pending after this | |
| 61 * handler (i.e. the one that called YieldAndRerun()) will not execute sooner | |
| 62 * then this handler is executed w/o a call to YieldAndRerun(). | |
| 63 */ | |
| 64 static bool YieldAndRerun() | |
| 65 { | |
| 66 return sSelf ? sSelf->YieldInternal() : false; | |
| 67 } | |
| 68 | |
| 69 nsresult Shutdown(); | |
| 70 already_AddRefed<nsIEventTarget> Target(); | |
| 71 | |
| 72 // Memory reporting | |
| 73 size_t SizeOfExcludingThis(mozilla::MallocSizeOf mallocSizeOf) const; | |
| 74 size_t SizeOfIncludingThis(mozilla::MallocSizeOf mallocSizeOf) const; | |
| 75 | |
| 76 private: | |
| 77 static void ThreadFunc(void* aClosure); | |
| 78 void ThreadFunc(); | |
| 79 void LoopOneLevel(uint32_t aLevel); | |
| 80 bool EventsPending(uint32_t aLastLevel = LAST_LEVEL); | |
| 81 nsresult DispatchInternal(nsIRunnable* aRunnable, uint32_t aLevel); | |
| 82 bool YieldInternal(); | |
| 83 | |
| 84 static CacheIOThread* sSelf; | |
| 85 | |
| 86 mozilla::Monitor mMonitor; | |
| 87 PRThread* mThread; | |
| 88 nsCOMPtr<nsIThread> mXPCOMThread; | |
| 89 uint32_t mLowestLevelWaiting; | |
| 90 uint32_t mCurrentlyExecutingLevel; | |
| 91 nsTArray<nsRefPtr<nsIRunnable> > mEventQueue[LAST_LEVEL]; | |
| 92 | |
| 93 bool mHasXPCOMEvents; | |
| 94 bool mRerunCurrentEvent; | |
| 95 bool mShutdown; | |
| 96 }; | |
| 97 | |
| 98 } // net | |
| 99 } // mozilla | |
| 100 | |
| 101 #endif |
