The Tor Browser / annotate

netwerk/cache/nsCacheRequest.h@6474c204b198 (annotated)

netwerk/cache/nsCacheRequest.h

Wed, 31 Dec 2014 06:09:35 +0100

author
Michael Schloh von Bennewitz <michael@schloh.com>
date
Wed, 31 Dec 2014 06:09:35 +0100
changeset 0
6474c204b198
permissions
-rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

michael@0 1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
michael@0 2 *
michael@0 3 * This Source Code Form is subject to the terms of the Mozilla Public
michael@0 4 * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0 6
michael@0 7 #ifndef _nsCacheRequest_h_
michael@0 8 #define _nsCacheRequest_h_
michael@0 9
michael@0 10 #include "nspr.h"
michael@0 11 #include "mozilla/CondVar.h"
michael@0 12 #include "mozilla/Mutex.h"
michael@0 13 #include "nsCOMPtr.h"
michael@0 14 #include "nsICache.h"
michael@0 15 #include "nsICacheListener.h"
michael@0 16 #include "nsCacheSession.h"
michael@0 17 #include "nsCacheService.h"
michael@0 18
michael@0 19
michael@0 20 class nsCacheRequest : public PRCList
michael@0 21 {
michael@0 22 typedef mozilla::CondVar CondVar;
michael@0 23 typedef mozilla::MutexAutoLock MutexAutoLock;
michael@0 24 typedef mozilla::Mutex Mutex;
michael@0 25
michael@0 26 private:
michael@0 27 friend class nsCacheService;
michael@0 28 friend class nsCacheEntry;
michael@0 29 friend class nsProcessRequestEvent;
michael@0 30
michael@0 31 nsCacheRequest( const nsACString & key,
michael@0 32 nsICacheListener * listener,
michael@0 33 nsCacheAccessMode accessRequested,
michael@0 34 bool blockingMode,
michael@0 35 nsCacheSession * session)
michael@0 36 : mKey(key),
michael@0 37 mInfo(0),
michael@0 38 mListener(listener),
michael@0 39 mLock("nsCacheRequest.mLock"),
michael@0 40 mCondVar(mLock, "nsCacheRequest.mCondVar"),
michael@0 41 mProfileDir(session->ProfileDir())
michael@0 42 {
michael@0 43 MOZ_COUNT_CTOR(nsCacheRequest);
michael@0 44 PR_INIT_CLIST(this);
michael@0 45 SetAccessRequested(accessRequested);
michael@0 46 SetStoragePolicy(session->StoragePolicy());
michael@0 47 if (session->IsStreamBased()) MarkStreamBased();
michael@0 48 if (session->WillDoomEntriesIfExpired()) MarkDoomEntriesIfExpired();
michael@0 49 if (session->IsPrivate()) MarkPrivate();
michael@0 50 if (blockingMode == nsICache::BLOCKING) MarkBlockingMode();
michael@0 51 MarkWaitingForValidation();
michael@0 52 NS_IF_ADDREF(mListener);
michael@0 53 }
michael@0 54
michael@0 55 ~nsCacheRequest()
michael@0 56 {
michael@0 57 MOZ_COUNT_DTOR(nsCacheRequest);
michael@0 58 NS_ASSERTION(PR_CLIST_IS_EMPTY(this), "request still on a list");
michael@0 59
michael@0 60 if (mListener)
michael@0 61 nsCacheService::ReleaseObject_Locked(mListener, mThread);
michael@0 62 }
michael@0 63
michael@0 64 /**
michael@0 65 * Simple Accessors
michael@0 66 */
michael@0 67 enum CacheRequestInfo {
michael@0 68 eStoragePolicyMask = 0x000000FF,
michael@0 69 eStreamBasedMask = 0x00000100,
michael@0 70 ePrivateMask = 0x00000200,
michael@0 71 eDoomEntriesIfExpiredMask = 0x00001000,
michael@0 72 eBlockingModeMask = 0x00010000,
michael@0 73 eWaitingForValidationMask = 0x00100000,
michael@0 74 eAccessRequestedMask = 0xFF000000
michael@0 75 };
michael@0 76
michael@0 77 void SetAccessRequested(nsCacheAccessMode mode)
michael@0 78 {
michael@0 79 NS_ASSERTION(mode <= 0xFF, "too many bits in nsCacheAccessMode");
michael@0 80 mInfo &= ~eAccessRequestedMask;
michael@0 81 mInfo |= mode << 24;
michael@0 82 }
michael@0 83
michael@0 84 nsCacheAccessMode AccessRequested()
michael@0 85 {
michael@0 86 return (nsCacheAccessMode)((mInfo >> 24) & 0xFF);
michael@0 87 }
michael@0 88
michael@0 89 void MarkStreamBased() { mInfo |= eStreamBasedMask; }
michael@0 90 bool IsStreamBased() { return (mInfo & eStreamBasedMask) != 0; }
michael@0 91
michael@0 92
michael@0 93 void MarkDoomEntriesIfExpired() { mInfo |= eDoomEntriesIfExpiredMask; }
michael@0 94 bool WillDoomEntriesIfExpired() { return (0 != (mInfo & eDoomEntriesIfExpiredMask)); }
michael@0 95
michael@0 96 void MarkBlockingMode() { mInfo |= eBlockingModeMask; }
michael@0 97 bool IsBlocking() { return (0 != (mInfo & eBlockingModeMask)); }
michael@0 98 bool IsNonBlocking() { return !(mInfo & eBlockingModeMask); }
michael@0 99
michael@0 100 void SetStoragePolicy(nsCacheStoragePolicy policy)
michael@0 101 {
michael@0 102 NS_ASSERTION(policy <= 0xFF, "too many bits in nsCacheStoragePolicy");
michael@0 103 mInfo &= ~eStoragePolicyMask; // clear storage policy bits
michael@0 104 mInfo |= policy; // or in new bits
michael@0 105 }
michael@0 106
michael@0 107 nsCacheStoragePolicy StoragePolicy()
michael@0 108 {
michael@0 109 return (nsCacheStoragePolicy)(mInfo & eStoragePolicyMask);
michael@0 110 }
michael@0 111
michael@0 112 void MarkPrivate() { mInfo |= ePrivateMask; }
michael@0 113 void MarkPublic() { mInfo &= ~ePrivateMask; }
michael@0 114 bool IsPrivate() { return (mInfo & ePrivateMask) != 0; }
michael@0 115
michael@0 116 void MarkWaitingForValidation() { mInfo |= eWaitingForValidationMask; }
michael@0 117 void DoneWaitingForValidation() { mInfo &= ~eWaitingForValidationMask; }
michael@0 118 bool WaitingForValidation()
michael@0 119 {
michael@0 120 return (mInfo & eWaitingForValidationMask) != 0;
michael@0 121 }
michael@0 122
michael@0 123 nsresult
michael@0 124 WaitForValidation(void)
michael@0 125 {
michael@0 126 if (!WaitingForValidation()) { // flag already cleared
michael@0 127 MarkWaitingForValidation(); // set up for next time
michael@0 128 return NS_OK; // early exit;
michael@0 129 }
michael@0 130 {
michael@0 131 MutexAutoLock lock(mLock);
michael@0 132 while (WaitingForValidation()) {
michael@0 133 mCondVar.Wait();
michael@0 134 }
michael@0 135 MarkWaitingForValidation(); // set up for next time
michael@0 136 }
michael@0 137 return NS_OK;
michael@0 138 }
michael@0 139
michael@0 140 void WakeUp(void) {
michael@0 141 DoneWaitingForValidation();
michael@0 142 MutexAutoLock lock(mLock);
michael@0 143 mCondVar.Notify();
michael@0 144 }
michael@0 145
michael@0 146 /**
michael@0 147 * Data members
michael@0 148 */
michael@0 149 nsCString mKey;
michael@0 150 uint32_t mInfo;
michael@0 151 nsICacheListener * mListener; // strong ref
michael@0 152 nsCOMPtr<nsIThread> mThread;
michael@0 153 Mutex mLock;
michael@0 154 CondVar mCondVar;
michael@0 155 nsCOMPtr<nsIFile> mProfileDir;
michael@0 156 };
michael@0 157
michael@0 158 #endif // _nsCacheRequest_h_

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