mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
415 lines
15 KiB
C++
415 lines
15 KiB
C++
/* 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 CacheFileIOManager__h__
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#define CacheFileIOManager__h__
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#include "CacheIOThread.h"
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#include "CacheStorageService.h"
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#include "nsIEventTarget.h"
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#include "nsITimer.h"
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#include "nsCOMPtr.h"
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#include "mozilla/SHA1.h"
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#include "mozilla/TimeStamp.h"
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#include "nsTArray.h"
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#include "nsString.h"
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#include "nsTHashtable.h"
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#include "prio.h"
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//#define DEBUG_HANDLES 1
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class nsIFile;
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class nsITimer;
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class nsIDirectoryEnumerator;
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class nsILoadContextInfo;
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class nsICacheStorageVisitor;
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namespace mozilla {
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namespace net {
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class CacheFile;
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#ifdef DEBUG_HANDLES
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class CacheFileHandlesEntry;
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#endif
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const char kEntriesDir[] = "entries";
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const char kDoomedDir[] = "doomed";
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const char kTrashDir[] = "trash";
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class CacheFileHandle : public nsISupports
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{
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public:
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NS_DECL_THREADSAFE_ISUPPORTS
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bool DispatchRelease();
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CacheFileHandle(const SHA1Sum::Hash *aHash, bool aPriority);
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CacheFileHandle(const nsACString &aKey, bool aPriority);
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CacheFileHandle(const CacheFileHandle &aOther);
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void Log();
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bool IsDoomed() const { return mIsDoomed; }
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const SHA1Sum::Hash *Hash() const { return mHash; }
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int64_t FileSize() const { return mFileSize; }
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uint32_t FileSizeInK() const;
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bool IsPriority() const { return mPriority; }
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bool FileExists() const { return mFileExists; }
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bool IsClosed() const { return mClosed; }
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bool IsSpecialFile() const { return mSpecialFile; }
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nsCString & Key() { return mKey; }
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// Memory reporting
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size_t SizeOfExcludingThis(mozilla::MallocSizeOf mallocSizeOf) const;
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size_t SizeOfIncludingThis(mozilla::MallocSizeOf mallocSizeOf) const;
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private:
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friend class CacheFileIOManager;
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friend class CacheFileHandles;
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friend class ReleaseNSPRHandleEvent;
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virtual ~CacheFileHandle();
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const SHA1Sum::Hash *mHash;
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bool mIsDoomed;
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bool mPriority;
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bool mClosed;
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bool mSpecialFile;
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bool mInvalid;
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bool mFileExists; // This means that the file should exists,
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// but it can be still deleted by OS/user
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// and then a subsequent OpenNSPRFileDesc()
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// will fail.
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nsCOMPtr<nsIFile> mFile;
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int64_t mFileSize;
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PRFileDesc *mFD; // if null then the file doesn't exists on the disk
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nsCString mKey;
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};
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class CacheFileHandles {
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public:
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CacheFileHandles();
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~CacheFileHandles();
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nsresult GetHandle(const SHA1Sum::Hash *aHash, CacheFileHandle **_retval);
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nsresult NewHandle(const SHA1Sum::Hash *aHash, bool aPriority, CacheFileHandle **_retval);
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void RemoveHandle(CacheFileHandle *aHandlle);
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void GetAllHandles(nsTArray<nsRefPtr<CacheFileHandle> > *_retval);
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void GetActiveHandles(nsTArray<nsRefPtr<CacheFileHandle> > *_retval);
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void ClearAll();
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uint32_t HandleCount();
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#ifdef DEBUG_HANDLES
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void Log(CacheFileHandlesEntry *entry);
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#endif
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// Memory reporting
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size_t SizeOfExcludingThis(mozilla::MallocSizeOf mallocSizeOf) const;
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size_t SizeOfIncludingThis(mozilla::MallocSizeOf mallocSizeOf) const;
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class HandleHashKey : public PLDHashEntryHdr
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{
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public:
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typedef const SHA1Sum::Hash& KeyType;
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typedef const SHA1Sum::Hash* KeyTypePointer;
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explicit HandleHashKey(KeyTypePointer aKey)
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{
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MOZ_COUNT_CTOR(HandleHashKey);
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mHash = (SHA1Sum::Hash*)new uint8_t[SHA1Sum::kHashSize];
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memcpy(mHash, aKey, sizeof(SHA1Sum::Hash));
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}
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HandleHashKey(const HandleHashKey& aOther)
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{
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NS_NOTREACHED("HandleHashKey copy constructor is forbidden!");
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}
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~HandleHashKey()
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{
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MOZ_COUNT_DTOR(HandleHashKey);
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}
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bool KeyEquals(KeyTypePointer aKey) const
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{
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return memcmp(mHash, aKey, sizeof(SHA1Sum::Hash)) == 0;
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}
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static KeyTypePointer KeyToPointer(KeyType aKey)
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{
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return &aKey;
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}
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static PLDHashNumber HashKey(KeyTypePointer aKey)
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{
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return (reinterpret_cast<const uint32_t *>(aKey))[0];
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}
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void AddHandle(CacheFileHandle* aHandle);
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void RemoveHandle(CacheFileHandle* aHandle);
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already_AddRefed<CacheFileHandle> GetNewestHandle();
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void GetHandles(nsTArray<nsRefPtr<CacheFileHandle> > &aResult);
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SHA1Sum::Hash *Hash() const { return mHash; }
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bool IsEmpty() const { return mHandles.Length() == 0; }
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enum { ALLOW_MEMMOVE = true };
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#ifdef DEBUG
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void AssertHandlesState();
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#endif
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// Memory reporting
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size_t SizeOfExcludingThis(mozilla::MallocSizeOf mallocSizeOf) const;
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size_t SizeOfIncludingThis(mozilla::MallocSizeOf mallocSizeOf) const;
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private:
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nsAutoArrayPtr<SHA1Sum::Hash> mHash;
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// Use weak pointers since the hash table access is on a single thread
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// only and CacheFileHandle removes itself from this table in its dtor
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// that may only be called on the same thread as we work with the hashtable
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// since we dispatch its Release() to this thread.
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nsTArray<CacheFileHandle*> mHandles;
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};
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private:
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nsTHashtable<HandleHashKey> mTable;
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};
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////////////////////////////////////////////////////////////////////////////////
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class OpenFileEvent;
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class CloseFileEvent;
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class ReadEvent;
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class WriteEvent;
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class MetadataWriteScheduleEvent;
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class CacheFileContextEvictor;
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#define CACHEFILEIOLISTENER_IID \
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{ /* dcaf2ddc-17cf-4242-bca1-8c86936375a5 */ \
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0xdcaf2ddc, \
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0x17cf, \
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0x4242, \
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{0xbc, 0xa1, 0x8c, 0x86, 0x93, 0x63, 0x75, 0xa5} \
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}
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class CacheFileIOListener : public nsISupports
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{
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public:
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NS_DECLARE_STATIC_IID_ACCESSOR(CACHEFILEIOLISTENER_IID)
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NS_IMETHOD OnFileOpened(CacheFileHandle *aHandle, nsresult aResult) = 0;
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NS_IMETHOD OnDataWritten(CacheFileHandle *aHandle, const char *aBuf,
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nsresult aResult) = 0;
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NS_IMETHOD OnDataRead(CacheFileHandle *aHandle, char *aBuf,
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nsresult aResult) = 0;
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NS_IMETHOD OnFileDoomed(CacheFileHandle *aHandle, nsresult aResult) = 0;
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NS_IMETHOD OnEOFSet(CacheFileHandle *aHandle, nsresult aResult) = 0;
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NS_IMETHOD OnFileRenamed(CacheFileHandle *aHandle, nsresult aResult) = 0;
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};
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NS_DEFINE_STATIC_IID_ACCESSOR(CacheFileIOListener, CACHEFILEIOLISTENER_IID)
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class CacheFileIOManager : public nsITimerCallback
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{
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public:
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NS_DECL_THREADSAFE_ISUPPORTS
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NS_DECL_NSITIMERCALLBACK
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enum {
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OPEN = 0U,
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CREATE = 1U,
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CREATE_NEW = 2U,
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PRIORITY = 4U,
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SPECIAL_FILE = 8U
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};
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CacheFileIOManager();
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static nsresult Init();
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static nsresult Shutdown();
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static nsresult OnProfile();
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static already_AddRefed<nsIEventTarget> IOTarget();
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static already_AddRefed<CacheIOThread> IOThread();
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static bool IsOnIOThread();
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static bool IsOnIOThreadOrCeased();
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static bool IsShutdown();
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// Make aFile's WriteMetadataIfNeeded be called automatically after
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// a short interval.
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static nsresult ScheduleMetadataWrite(CacheFile * aFile);
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// Remove aFile from the scheduling registry array.
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// WriteMetadataIfNeeded will not be automatically called.
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static nsresult UnscheduleMetadataWrite(CacheFile * aFile);
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// Shuts the scheduling off and flushes all pending metadata writes.
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static nsresult ShutdownMetadataWriteScheduling();
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static nsresult OpenFile(const nsACString &aKey,
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uint32_t aFlags, CacheFileIOListener *aCallback);
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static nsresult Read(CacheFileHandle *aHandle, int64_t aOffset,
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char *aBuf, int32_t aCount,
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CacheFileIOListener *aCallback);
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static nsresult Write(CacheFileHandle *aHandle, int64_t aOffset,
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const char *aBuf, int32_t aCount, bool aValidate,
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CacheFileIOListener *aCallback);
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static nsresult DoomFile(CacheFileHandle *aHandle,
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CacheFileIOListener *aCallback);
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static nsresult DoomFileByKey(const nsACString &aKey,
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CacheFileIOListener *aCallback);
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static nsresult ReleaseNSPRHandle(CacheFileHandle *aHandle);
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static nsresult TruncateSeekSetEOF(CacheFileHandle *aHandle,
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int64_t aTruncatePos, int64_t aEOFPos,
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CacheFileIOListener *aCallback);
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static nsresult RenameFile(CacheFileHandle *aHandle,
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const nsACString &aNewName,
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CacheFileIOListener *aCallback);
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static nsresult EvictIfOverLimit();
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static nsresult EvictAll();
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static nsresult EvictByContext(nsILoadContextInfo *aLoadContextInfo);
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static nsresult InitIndexEntry(CacheFileHandle *aHandle,
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uint32_t aAppId,
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bool aAnonymous,
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bool aInBrowser);
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static nsresult UpdateIndexEntry(CacheFileHandle *aHandle,
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const uint32_t *aFrecency,
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const uint32_t *aExpirationTime);
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static nsresult UpdateIndexEntry();
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enum EEnumerateMode {
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ENTRIES,
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DOOMED
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};
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static void GetCacheDirectory(nsIFile** result);
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#if defined(MOZ_WIDGET_ANDROID)
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static void GetProfilelessCacheDirectory(nsIFile** result);
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#endif
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// Calls synchronously OnEntryInfo for an entry with the given hash.
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// Tries to find an existing entry in the service hashtables first, if not
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// found, loads synchronously from disk file.
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// Callable on the IO thread only.
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static nsresult GetEntryInfo(const SHA1Sum::Hash *aHash,
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CacheStorageService::EntryInfoCallback *aCallback);
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// Memory reporting
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static size_t SizeOfExcludingThis(mozilla::MallocSizeOf mallocSizeOf);
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static size_t SizeOfIncludingThis(mozilla::MallocSizeOf mallocSizeOf);
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private:
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friend class CacheFileHandle;
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friend class CacheFileChunk;
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friend class CacheFile;
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friend class ShutdownEvent;
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friend class OpenFileEvent;
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friend class CloseHandleEvent;
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friend class ReadEvent;
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friend class WriteEvent;
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friend class DoomFileEvent;
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friend class DoomFileByKeyEvent;
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friend class ReleaseNSPRHandleEvent;
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friend class TruncateSeekSetEOFEvent;
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friend class RenameFileEvent;
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friend class CacheIndex;
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friend class MetadataWriteScheduleEvent;
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friend class CacheFileContextEvictor;
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virtual ~CacheFileIOManager();
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nsresult InitInternal();
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nsresult ShutdownInternal();
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nsresult OpenFileInternal(const SHA1Sum::Hash *aHash,
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const nsACString &aKey,
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uint32_t aFlags,
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CacheFileHandle **_retval);
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nsresult OpenSpecialFileInternal(const nsACString &aKey,
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uint32_t aFlags,
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CacheFileHandle **_retval);
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nsresult CloseHandleInternal(CacheFileHandle *aHandle);
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nsresult ReadInternal(CacheFileHandle *aHandle, int64_t aOffset,
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char *aBuf, int32_t aCount);
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nsresult WriteInternal(CacheFileHandle *aHandle, int64_t aOffset,
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const char *aBuf, int32_t aCount, bool aValidate);
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nsresult DoomFileInternal(CacheFileHandle *aHandle);
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nsresult DoomFileByKeyInternal(const SHA1Sum::Hash *aHash);
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nsresult ReleaseNSPRHandleInternal(CacheFileHandle *aHandle);
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nsresult TruncateSeekSetEOFInternal(CacheFileHandle *aHandle,
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int64_t aTruncatePos, int64_t aEOFPos);
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nsresult RenameFileInternal(CacheFileHandle *aHandle,
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const nsACString &aNewName);
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nsresult EvictIfOverLimitInternal();
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nsresult OverLimitEvictionInternal();
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nsresult EvictAllInternal();
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nsresult EvictByContextInternal(nsILoadContextInfo *aLoadContextInfo);
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nsresult TrashDirectory(nsIFile *aFile);
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static void OnTrashTimer(nsITimer *aTimer, void *aClosure);
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nsresult StartRemovingTrash();
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nsresult RemoveTrashInternal();
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nsresult FindTrashDirToRemove();
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nsresult CreateFile(CacheFileHandle *aHandle);
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static void HashToStr(const SHA1Sum::Hash *aHash, nsACString &_retval);
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static nsresult StrToHash(const nsACString &aHash, SHA1Sum::Hash *_retval);
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nsresult GetFile(const SHA1Sum::Hash *aHash, nsIFile **_retval);
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nsresult GetSpecialFile(const nsACString &aKey, nsIFile **_retval);
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nsresult GetDoomedFile(nsIFile **_retval);
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nsresult IsEmptyDirectory(nsIFile *aFile, bool *_retval);
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nsresult CheckAndCreateDir(nsIFile *aFile, const char *aDir,
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bool aEnsureEmptyDir);
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nsresult CreateCacheTree();
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nsresult OpenNSPRHandle(CacheFileHandle *aHandle, bool aCreate = false);
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void NSPRHandleUsed(CacheFileHandle *aHandle);
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// Removing all cache files during shutdown
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nsresult SyncRemoveDir(nsIFile *aFile, const char *aDir);
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void SyncRemoveAllCacheFiles();
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nsresult ScheduleMetadataWriteInternal(CacheFile * aFile);
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nsresult UnscheduleMetadataWriteInternal(CacheFile * aFile);
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nsresult ShutdownMetadataWriteSchedulingInternal();
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static nsresult CacheIndexStateChanged();
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nsresult CacheIndexStateChangedInternal();
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// Smart size calculation. UpdateSmartCacheSize() must be called on IO thread.
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// It is called in EvictIfOverLimitInternal() just before we decide whether to
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// start overlimit eviction or not and also in OverLimitEvictionInternal()
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// before we start an eviction loop.
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nsresult UpdateSmartCacheSize(int64_t aFreeSpace);
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// Memory reporting (private part)
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size_t SizeOfExcludingThisInternal(mozilla::MallocSizeOf mallocSizeOf) const;
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static CacheFileIOManager *gInstance;
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TimeStamp mStartTime;
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bool mShuttingDown;
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nsRefPtr<CacheIOThread> mIOThread;
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nsCOMPtr<nsIFile> mCacheDirectory;
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#if defined(MOZ_WIDGET_ANDROID)
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// On Android we add the active profile directory name between the path
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// and the 'cache2' leaf name. However, to delete any leftover data from
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// times before we were doing it, we still need to access the directory
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// w/o the profile name in the path. Here it is stored.
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nsCOMPtr<nsIFile> mCacheProfilelessDirectory;
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#endif
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bool mTreeCreated;
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CacheFileHandles mHandles;
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nsTArray<CacheFileHandle *> mHandlesByLastUsed;
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nsTArray<CacheFileHandle *> mSpecialHandles;
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nsTArray<nsRefPtr<CacheFile> > mScheduledMetadataWrites;
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nsCOMPtr<nsITimer> mMetadataWritesTimer;
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bool mOverLimitEvicting;
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bool mRemovingTrashDirs;
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nsCOMPtr<nsITimer> mTrashTimer;
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nsCOMPtr<nsIFile> mTrashDir;
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nsCOMPtr<nsIDirectoryEnumerator> mTrashDirEnumerator;
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nsTArray<nsCString> mFailedTrashDirs;
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nsRefPtr<CacheFileContextEvictor> mContextEvictor;
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TimeStamp mLastSmartSizeTime;
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};
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} // net
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} // mozilla
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#endif
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