mirror of
https://github.com/mozilla/gecko-dev.git
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a903aefdc0
Backed out changeset 85486c4aa3d8 (bug 936964) Backed out changeset 25312eb71998 (bug 936964) Backed out changeset 6dbb8333960c (bug 936964) Backed out changeset da6465ad476f (bug 936964) Backed out changeset a87ffc992f38 (bug 936964) Backed out changeset 4ae3a61182db (bug 936964) Backed out changeset 34e9c3137804 (bug 936964) Backed out changeset fd1459e71585 (bug 936964) Backed out changeset 3e8a701d8bdc (bug 943660) Landed on a CLOSED TREE --HG-- rename : content/canvas/src/WebGLMemoryTracker.h => content/canvas/src/WebGLMemoryReporterWrapper.h
389 lines
14 KiB
C++
389 lines
14 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* vim: set ts=8 sts=4 et sw=4 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef _nsCacheService_h_
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#define _nsCacheService_h_
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#include "nsICacheService.h"
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#include "nsCacheSession.h"
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#include "nsCacheDevice.h"
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#include "nsCacheEntry.h"
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#include "nsThreadUtils.h"
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#include "nsICacheListener.h"
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#include "prthread.h"
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#include "nsIObserver.h"
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#include "nsString.h"
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#include "nsTArray.h"
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#include "nsRefPtrHashtable.h"
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#include "mozilla/CondVar.h"
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#include "mozilla/Mutex.h"
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#include "mozilla/Telemetry.h"
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class nsCacheRequest;
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class nsCacheProfilePrefObserver;
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class nsDiskCacheDevice;
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class nsMemoryCacheDevice;
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class nsOfflineCacheDevice;
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class nsCacheServiceAutoLock;
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class nsITimer;
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class mozIStorageService;
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/******************************************************************************
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* nsNotifyDoomListener
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*****************************************************************************/
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class nsNotifyDoomListener : public nsRunnable {
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public:
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nsNotifyDoomListener(nsICacheListener *listener,
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nsresult status)
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: mListener(listener) // transfers reference
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, mStatus(status)
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{}
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NS_IMETHOD Run()
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{
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mListener->OnCacheEntryDoomed(mStatus);
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NS_RELEASE(mListener);
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return NS_OK;
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}
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private:
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nsICacheListener *mListener;
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nsresult mStatus;
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};
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/******************************************************************************
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* nsCacheService
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******************************************************************************/
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class nsCacheService : public nsICacheServiceInternal
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{
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public:
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NS_DECL_THREADSAFE_ISUPPORTS
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NS_DECL_NSICACHESERVICE
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NS_DECL_NSICACHESERVICEINTERNAL
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nsCacheService();
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virtual ~nsCacheService();
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// Define a Create method to be used with a factory:
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static nsresult
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Create(nsISupports* outer, const nsIID& iid, void* *result);
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/**
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* Methods called by nsCacheSession
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*/
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static nsresult OpenCacheEntry(nsCacheSession * session,
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const nsACString & key,
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nsCacheAccessMode accessRequested,
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bool blockingMode,
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nsICacheListener * listener,
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nsICacheEntryDescriptor ** result);
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static nsresult EvictEntriesForSession(nsCacheSession * session);
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static nsresult IsStorageEnabledForPolicy(nsCacheStoragePolicy storagePolicy,
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bool * result);
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static nsresult DoomEntry(nsCacheSession *session,
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const nsACString &key,
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nsICacheListener *listener);
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/**
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* Methods called by nsCacheEntryDescriptor
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*/
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static void CloseDescriptor(nsCacheEntryDescriptor * descriptor);
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static nsresult GetFileForEntry(nsCacheEntry * entry,
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nsIFile ** result);
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static nsresult OpenInputStreamForEntry(nsCacheEntry * entry,
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nsCacheAccessMode mode,
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uint32_t offset,
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nsIInputStream ** result);
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static nsresult OpenOutputStreamForEntry(nsCacheEntry * entry,
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nsCacheAccessMode mode,
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uint32_t offset,
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nsIOutputStream ** result);
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static nsresult OnDataSizeChange(nsCacheEntry * entry, int32_t deltaSize);
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static nsresult SetCacheElement(nsCacheEntry * entry, nsISupports * element);
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static nsresult ValidateEntry(nsCacheEntry * entry);
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static int32_t CacheCompressionLevel();
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static bool GetClearingEntries();
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/**
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* Methods called by any cache classes
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*/
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static
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nsCacheService * GlobalInstance() { return gService; }
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static nsresult DoomEntry(nsCacheEntry * entry);
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static bool IsStorageEnabledForPolicy_Locked(nsCacheStoragePolicy policy);
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/**
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* Called by disk cache to notify us to use the new max smart size
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*/
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static void MarkStartingFresh();
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/**
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* Methods called by nsApplicationCacheService
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*/
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nsresult GetOfflineDevice(nsOfflineCacheDevice ** aDevice);
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/**
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* Creates an offline cache device that works over a specific profile directory.
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* A tool to preload offline cache for profiles different from the current
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* application's profile directory.
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*/
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nsresult GetCustomOfflineDevice(nsIFile *aProfileDir,
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int32_t aQuota,
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nsOfflineCacheDevice **aDevice);
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// This method may be called to release an object while the cache service
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// lock is being held. If a non-null target is specified and the target
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// does not correspond to the current thread, then the release will be
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// proxied to the specified target. Otherwise, the object will be added to
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// the list of objects to be released when the cache service is unlocked.
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static void ReleaseObject_Locked(nsISupports * object,
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nsIEventTarget * target = nullptr);
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static nsresult DispatchToCacheIOThread(nsIRunnable* event);
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// Calling this method will block the calling thread until all pending
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// events on the cache-io thread has finished. The calling thread must
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// hold the cache-lock
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static nsresult SyncWithCacheIOThread();
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/**
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* Methods called by nsCacheProfilePrefObserver
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*/
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static void OnProfileShutdown(bool cleanse);
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static void OnProfileChanged();
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static void SetDiskCacheEnabled(bool enabled);
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// Sets the disk cache capacity (in kilobytes)
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static void SetDiskCacheCapacity(int32_t capacity);
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// Set max size for a disk-cache entry (in KB). -1 disables limit up to
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// 1/8th of disk cache size
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static void SetDiskCacheMaxEntrySize(int32_t maxSize);
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// Set max size for a memory-cache entry (in kilobytes). -1 disables
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// limit up to 90% of memory cache size
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static void SetMemoryCacheMaxEntrySize(int32_t maxSize);
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static void SetOfflineCacheEnabled(bool enabled);
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// Sets the offline cache capacity (in kilobytes)
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static void SetOfflineCacheCapacity(int32_t capacity);
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static void SetMemoryCache();
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static void SetCacheCompressionLevel(int32_t level);
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// Starts smart cache size computation if disk device is available
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static nsresult SetDiskSmartSize();
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static void MoveOrRemoveDiskCache(nsIFile *aOldCacheDir,
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nsIFile *aNewCacheDir,
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const char *aCacheSubdir);
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nsresult Init();
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void Shutdown();
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static bool IsInitialized()
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{
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if (!gService) {
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return false;
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}
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return gService->mInitialized;
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}
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static void AssertOwnsLock()
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{ gService->mLock.AssertCurrentThreadOwns(); }
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static void LeavePrivateBrowsing();
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bool IsDoomListEmpty();
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typedef bool (*DoomCheckFn)(nsCacheEntry* entry);
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private:
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friend class nsCacheServiceAutoLock;
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friend class nsOfflineCacheDevice;
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friend class nsProcessRequestEvent;
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friend class nsSetSmartSizeEvent;
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friend class nsBlockOnCacheThreadEvent;
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friend class nsSetDiskSmartSizeCallback;
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friend class nsDoomEvent;
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friend class nsDisableOldMaxSmartSizePrefEvent;
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friend class nsDiskCacheMap;
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friend class nsAsyncDoomEvent;
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friend class nsCacheEntryDescriptor;
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/**
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* Internal Methods
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*/
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static void Lock(::mozilla::Telemetry::ID mainThreadLockerID);
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static void Unlock();
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void LockAcquired();
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void LockReleased();
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nsresult CreateDiskDevice();
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nsresult CreateOfflineDevice();
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nsresult CreateCustomOfflineDevice(nsIFile *aProfileDir,
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int32_t aQuota,
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nsOfflineCacheDevice **aDevice);
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nsresult CreateMemoryDevice();
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nsresult RemoveCustomOfflineDevice(nsOfflineCacheDevice *aDevice);
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nsresult CreateRequest(nsCacheSession * session,
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const nsACString & clientKey,
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nsCacheAccessMode accessRequested,
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bool blockingMode,
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nsICacheListener * listener,
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nsCacheRequest ** request);
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nsresult DoomEntry_Internal(nsCacheEntry * entry,
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bool doProcessPendingRequests);
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nsresult EvictEntriesForClient(const char * clientID,
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nsCacheStoragePolicy storagePolicy);
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// Notifies request listener asynchronously on the request's thread, and
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// releases the descriptor on the request's thread. If this method fails,
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// the descriptor is not released.
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nsresult NotifyListener(nsCacheRequest * request,
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nsICacheEntryDescriptor * descriptor,
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nsCacheAccessMode accessGranted,
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nsresult error);
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nsresult ActivateEntry(nsCacheRequest * request,
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nsCacheEntry ** entry,
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nsCacheEntry ** doomedEntry);
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nsCacheDevice * EnsureEntryHasDevice(nsCacheEntry * entry);
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nsCacheEntry * SearchCacheDevices(nsCString * key, nsCacheStoragePolicy policy, bool *collision);
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void DeactivateEntry(nsCacheEntry * entry);
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nsresult ProcessRequest(nsCacheRequest * request,
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bool calledFromOpenCacheEntry,
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nsICacheEntryDescriptor ** result);
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nsresult ProcessPendingRequests(nsCacheEntry * entry);
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void ClearDoomList(void);
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void DoomActiveEntries(DoomCheckFn check);
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void CloseAllStreams();
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void FireClearNetworkCacheStoredAnywhereNotification();
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static
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PLDHashOperator GetActiveEntries(PLDHashTable * table,
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PLDHashEntryHdr * hdr,
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uint32_t number,
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void * arg);
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static
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PLDHashOperator RemoveActiveEntry(PLDHashTable * table,
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PLDHashEntryHdr * hdr,
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uint32_t number,
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void * arg);
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static
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PLDHashOperator ShutdownCustomCacheDeviceEnum(const nsAString& aProfileDir,
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nsRefPtr<nsOfflineCacheDevice>& aDevice,
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void* aUserArg);
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#if defined(PR_LOGGING)
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void LogCacheStatistics();
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#endif
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nsresult SetDiskSmartSize_Locked();
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/**
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* Data Members
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*/
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static nsCacheService * gService; // there can be only one...
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nsCOMPtr<mozIStorageService> mStorageService;
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nsCacheProfilePrefObserver * mObserver;
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mozilla::Mutex mLock;
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mozilla::CondVar mCondVar;
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mozilla::Mutex mTimeStampLock;
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mozilla::TimeStamp mLockAcquiredTimeStamp;
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nsCOMPtr<nsIThread> mCacheIOThread;
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nsTArray<nsISupports*> mDoomedObjects;
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nsCOMPtr<nsITimer> mSmartSizeTimer;
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bool mInitialized;
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bool mClearingEntries;
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bool mEnableMemoryDevice;
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bool mEnableDiskDevice;
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bool mEnableOfflineDevice;
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nsMemoryCacheDevice * mMemoryDevice;
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nsDiskCacheDevice * mDiskDevice;
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nsOfflineCacheDevice * mOfflineDevice;
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nsRefPtrHashtable<nsStringHashKey, nsOfflineCacheDevice> mCustomOfflineDevices;
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nsCacheEntryHashTable mActiveEntries;
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PRCList mDoomedEntries;
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// stats
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uint32_t mTotalEntries;
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uint32_t mCacheHits;
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uint32_t mCacheMisses;
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uint32_t mMaxKeyLength;
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uint32_t mMaxDataSize;
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uint32_t mMaxMetaSize;
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// Unexpected error totals
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uint32_t mDeactivateFailures;
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uint32_t mDeactivatedUnboundEntries;
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};
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/******************************************************************************
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* nsCacheServiceAutoLock
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******************************************************************************/
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#define LOCK_TELEM(x) \
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(::mozilla::Telemetry::CACHE_SERVICE_LOCK_WAIT_MAINTHREAD_##x)
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// Instantiate this class to acquire the cache service lock for a particular
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// execution scope.
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class nsCacheServiceAutoLock {
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public:
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nsCacheServiceAutoLock(mozilla::Telemetry::ID mainThreadLockerID) {
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nsCacheService::Lock(mainThreadLockerID);
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}
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~nsCacheServiceAutoLock() {
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nsCacheService::Unlock();
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}
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};
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#endif // _nsCacheService_h_
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