The Tor Browser / file comparison
comparison: netwerk/cache/nsMemoryCacheDevice.h
netwerk/cache/nsMemoryCacheDevice.h
- changeset 0
- 6474c204b198
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| -1:000000000000 | 0:0b8027136f64 |
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| 1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ | |
| 2 /* vim: set ts=8 sts=4 et sw=4 tw=80: */ | |
| 3 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 4 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 6 | |
| 7 #ifndef _nsMemoryCacheDevice_h_ | |
| 8 #define _nsMemoryCacheDevice_h_ | |
| 9 | |
| 10 #include "nsCacheDevice.h" | |
| 11 #include "pldhash.h" | |
| 12 #include "nsCacheEntry.h" | |
| 13 | |
| 14 | |
| 15 class nsMemoryCacheDeviceInfo; | |
| 16 | |
| 17 /****************************************************************************** | |
| 18 * nsMemoryCacheDevice | |
| 19 ******************************************************************************/ | |
| 20 class nsMemoryCacheDevice : public nsCacheDevice | |
| 21 { | |
| 22 public: | |
| 23 nsMemoryCacheDevice(); | |
| 24 virtual ~nsMemoryCacheDevice(); | |
| 25 | |
| 26 virtual nsresult Init(); | |
| 27 virtual nsresult Shutdown(); | |
| 28 | |
| 29 virtual const char * GetDeviceID(void); | |
| 30 | |
| 31 virtual nsresult BindEntry( nsCacheEntry * entry ); | |
| 32 virtual nsCacheEntry * FindEntry( nsCString * key, bool *collision ); | |
| 33 virtual void DoomEntry( nsCacheEntry * entry ); | |
| 34 virtual nsresult DeactivateEntry( nsCacheEntry * entry ); | |
| 35 | |
| 36 virtual nsresult OpenInputStreamForEntry(nsCacheEntry * entry, | |
| 37 nsCacheAccessMode mode, | |
| 38 uint32_t offset, | |
| 39 nsIInputStream ** result); | |
| 40 | |
| 41 virtual nsresult OpenOutputStreamForEntry(nsCacheEntry * entry, | |
| 42 nsCacheAccessMode mode, | |
| 43 uint32_t offset, | |
| 44 nsIOutputStream ** result); | |
| 45 | |
| 46 virtual nsresult GetFileForEntry( nsCacheEntry * entry, | |
| 47 nsIFile ** result ); | |
| 48 | |
| 49 virtual nsresult OnDataSizeChange( nsCacheEntry * entry, int32_t deltaSize ); | |
| 50 | |
| 51 virtual nsresult Visit( nsICacheVisitor * visitor ); | |
| 52 | |
| 53 virtual nsresult EvictEntries(const char * clientID); | |
| 54 nsresult EvictPrivateEntries(); | |
| 55 | |
| 56 void SetCapacity(int32_t capacity); | |
| 57 void SetMaxEntrySize(int32_t maxSizeInKilobytes); | |
| 58 | |
| 59 bool EntryIsTooBig(int64_t entrySize); | |
| 60 | |
| 61 size_t TotalSize(); | |
| 62 | |
| 63 private: | |
| 64 friend class nsMemoryCacheDeviceInfo; | |
| 65 enum { DELETE_ENTRY = true, | |
| 66 DO_NOT_DELETE_ENTRY = false }; | |
| 67 | |
| 68 void AdjustMemoryLimits( int32_t softLimit, int32_t hardLimit); | |
| 69 void EvictEntry( nsCacheEntry * entry , bool deleteEntry); | |
| 70 void EvictEntriesIfNecessary(); | |
| 71 int EvictionList(nsCacheEntry * entry, int32_t deltaSize); | |
| 72 | |
| 73 typedef bool (*EvictionMatcherFn)(nsCacheEntry* entry, void* args); | |
| 74 nsresult DoEvictEntries(EvictionMatcherFn matchFn, void* args); | |
| 75 | |
| 76 #ifdef DEBUG | |
| 77 void CheckEntryCount(); | |
| 78 #endif | |
| 79 /* | |
| 80 * Data members | |
| 81 */ | |
| 82 enum { | |
| 83 kQueueCount = 24 // entries > 2^23 (8Mb) start in last queue | |
| 84 }; | |
| 85 | |
| 86 nsCacheEntryHashTable mMemCacheEntries; | |
| 87 bool mInitialized; | |
| 88 | |
| 89 PRCList mEvictionList[kQueueCount]; | |
| 90 | |
| 91 int32_t mHardLimit; | |
| 92 int32_t mSoftLimit; | |
| 93 | |
| 94 int32_t mTotalSize; | |
| 95 int32_t mInactiveSize; | |
| 96 | |
| 97 int32_t mEntryCount; | |
| 98 int32_t mMaxEntryCount; | |
| 99 int32_t mMaxEntrySize; // internal unit is bytes | |
| 100 | |
| 101 // XXX what other stats do we want to keep? | |
| 102 }; | |
| 103 | |
| 104 | |
| 105 /****************************************************************************** | |
| 106 * nsMemoryCacheDeviceInfo - used to call nsIVisitor for about:cache | |
| 107 ******************************************************************************/ | |
| 108 class nsMemoryCacheDeviceInfo : public nsICacheDeviceInfo { | |
| 109 public: | |
| 110 NS_DECL_ISUPPORTS | |
| 111 NS_DECL_NSICACHEDEVICEINFO | |
| 112 | |
| 113 nsMemoryCacheDeviceInfo(nsMemoryCacheDevice* device) | |
| 114 : mDevice(device) | |
| 115 { | |
| 116 } | |
| 117 | |
| 118 virtual ~nsMemoryCacheDeviceInfo() {} | |
| 119 | |
| 120 private: | |
| 121 nsMemoryCacheDevice* mDevice; | |
| 122 }; | |
| 123 | |
| 124 | |
| 125 #endif // _nsMemoryCacheDevice_h_ |
