forked from mirrors/gecko-dev
13f4c5ecaf
* A memory leak occurs when this happens in the content process * I added an assertion that we only create it in the parent process MozReview-Commit-ID: 1UTyusRg0qx --HG-- extra : rebase_source : 400cfb21ee094ad33e15681f213af6dbe20ebbf5
2316 lines
66 KiB
C++
2316 lines
66 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 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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#include "CacheLog.h"
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#include "CacheStorageService.h"
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#include "CacheFileIOManager.h"
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#include "CacheObserver.h"
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#include "CacheIndex.h"
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#include "CacheIndexIterator.h"
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#include "CacheStorage.h"
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#include "AppCacheStorage.h"
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#include "CacheEntry.h"
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#include "CacheFileUtils.h"
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#include "OldWrappers.h"
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#include "nsCacheService.h"
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#include "nsDeleteDir.h"
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#include "nsICacheStorageVisitor.h"
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#include "nsIObserverService.h"
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#include "nsIFile.h"
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#include "nsIURI.h"
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#include "nsCOMPtr.h"
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#include "nsAutoPtr.h"
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#include "nsNetCID.h"
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#include "nsNetUtil.h"
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#include "nsServiceManagerUtils.h"
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#include "nsWeakReference.h"
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#include "nsXULAppAPI.h"
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#include "mozilla/TimeStamp.h"
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#include "mozilla/DebugOnly.h"
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#include "mozilla/Services.h"
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#include "mozilla/IntegerPrintfMacros.h"
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namespace mozilla {
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namespace net {
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namespace {
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void AppendMemoryStorageID(nsAutoCString &key)
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{
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key.Append('/');
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key.Append('M');
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}
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} // namespace
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// Not defining as static or class member of CacheStorageService since
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// it would otherwise need to include CacheEntry.h and that then would
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// need to be exported to make nsNetModule.cpp compilable.
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typedef nsClassHashtable<nsCStringHashKey, CacheEntryTable>
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GlobalEntryTables;
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/**
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* Keeps tables of entries. There is one entries table for each distinct load
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* context type. The distinction is based on following load context info states:
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* <isPrivate|isAnon|appId|inIsolatedMozBrowser> which builds a mapping key.
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*
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* Thread-safe to access, protected by the service mutex.
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*/
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static GlobalEntryTables* sGlobalEntryTables;
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CacheMemoryConsumer::CacheMemoryConsumer(uint32_t aFlags)
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: mReportedMemoryConsumption(0)
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, mFlags(aFlags)
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{
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}
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void
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CacheMemoryConsumer::DoMemoryReport(uint32_t aCurrentSize)
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{
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if (!(mFlags & DONT_REPORT) && CacheStorageService::Self()) {
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CacheStorageService::Self()->OnMemoryConsumptionChange(this, aCurrentSize);
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}
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}
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CacheStorageService::MemoryPool::MemoryPool(EType aType)
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: mType(aType)
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, mMemorySize(0)
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{
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}
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CacheStorageService::MemoryPool::~MemoryPool()
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{
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if (mMemorySize != 0) {
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NS_ERROR("Network cache reported memory consumption is not at 0, probably leaking?");
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}
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}
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uint32_t
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CacheStorageService::MemoryPool::Limit() const
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{
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switch (mType) {
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case DISK:
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return CacheObserver::MetadataMemoryLimit();
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case MEMORY:
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return CacheObserver::MemoryCacheCapacity();
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}
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MOZ_CRASH("Bad pool type");
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return 0;
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}
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NS_IMPL_ISUPPORTS(CacheStorageService,
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nsICacheStorageService,
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nsIMemoryReporter,
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nsITimerCallback,
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nsICacheTesting,
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nsINamed)
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CacheStorageService* CacheStorageService::sSelf = nullptr;
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CacheStorageService::CacheStorageService()
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: mLock("CacheStorageService.mLock")
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, mForcedValidEntriesLock("CacheStorageService.mForcedValidEntriesLock")
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, mShutdown(false)
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, mDiskPool(MemoryPool::DISK)
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, mMemoryPool(MemoryPool::MEMORY)
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{
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CacheFileIOManager::Init();
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MOZ_ASSERT(XRE_IsParentProcess());
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MOZ_ASSERT(!sSelf);
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sSelf = this;
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sGlobalEntryTables = new GlobalEntryTables();
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RegisterStrongMemoryReporter(this);
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}
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CacheStorageService::~CacheStorageService()
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{
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LOG(("CacheStorageService::~CacheStorageService"));
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sSelf = nullptr;
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}
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void CacheStorageService::Shutdown()
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{
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mozilla::MutexAutoLock lock(mLock);
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if (mShutdown)
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return;
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LOG(("CacheStorageService::Shutdown - start"));
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mShutdown = true;
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nsCOMPtr<nsIRunnable> event =
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NewRunnableMethod("net::CacheStorageService::ShutdownBackground",
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this,
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&CacheStorageService::ShutdownBackground);
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Dispatch(event);
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#ifdef NS_FREE_PERMANENT_DATA
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sGlobalEntryTables->Clear();
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delete sGlobalEntryTables;
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#endif
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sGlobalEntryTables = nullptr;
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LOG(("CacheStorageService::Shutdown - done"));
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}
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void CacheStorageService::ShutdownBackground()
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{
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LOG(("CacheStorageService::ShutdownBackground - start"));
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MOZ_ASSERT(IsOnManagementThread());
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{
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mozilla::MutexAutoLock lock(mLock);
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// Cancel purge timer to avoid leaking.
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if (mPurgeTimer) {
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LOG((" freeing the timer"));
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mPurgeTimer->Cancel();
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}
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}
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#ifdef NS_FREE_PERMANENT_DATA
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Pool(false).mFrecencyArray.Clear();
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Pool(false).mExpirationArray.Clear();
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Pool(true).mFrecencyArray.Clear();
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Pool(true).mExpirationArray.Clear();
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#endif
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LOG(("CacheStorageService::ShutdownBackground - done"));
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}
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// Internal management methods
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namespace {
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// WalkCacheRunnable
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// Base class for particular storage entries visiting
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class WalkCacheRunnable : public Runnable
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, public CacheStorageService::EntryInfoCallback
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{
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protected:
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WalkCacheRunnable(nsICacheStorageVisitor* aVisitor, bool aVisitEntries)
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: Runnable("net::WalkCacheRunnable")
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, mService(CacheStorageService::Self())
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, mCallback(aVisitor)
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, mSize(0)
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, mNotifyStorage(true)
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, mVisitEntries(aVisitEntries)
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, mCancel(false)
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{
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MOZ_ASSERT(NS_IsMainThread());
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}
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virtual ~WalkCacheRunnable()
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{
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if (mCallback) {
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ProxyReleaseMainThread(
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"WalkCacheRunnable::mCallback", mCallback);
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}
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}
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RefPtr<CacheStorageService> mService;
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nsCOMPtr<nsICacheStorageVisitor> mCallback;
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uint64_t mSize;
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bool mNotifyStorage : 1;
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bool mVisitEntries : 1;
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Atomic<bool> mCancel;
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};
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// WalkMemoryCacheRunnable
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// Responsible to visit memory storage and walk
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// all entries on it asynchronously.
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class WalkMemoryCacheRunnable : public WalkCacheRunnable
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{
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public:
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WalkMemoryCacheRunnable(nsILoadContextInfo *aLoadInfo,
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bool aVisitEntries,
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nsICacheStorageVisitor* aVisitor)
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: WalkCacheRunnable(aVisitor, aVisitEntries)
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{
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CacheFileUtils::AppendKeyPrefix(aLoadInfo, mContextKey);
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MOZ_ASSERT(NS_IsMainThread());
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}
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nsresult Walk()
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{
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return mService->Dispatch(this);
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}
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private:
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NS_IMETHOD Run() override
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{
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if (CacheStorageService::IsOnManagementThread()) {
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LOG(("WalkMemoryCacheRunnable::Run - collecting [this=%p]", this));
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// First, walk, count and grab all entries from the storage
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mozilla::MutexAutoLock lock(CacheStorageService::Self()->Lock());
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if (!CacheStorageService::IsRunning())
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return NS_ERROR_NOT_INITIALIZED;
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CacheEntryTable* entries;
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if (sGlobalEntryTables->Get(mContextKey, &entries)) {
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for (auto iter = entries->Iter(); !iter.Done(); iter.Next()) {
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CacheEntry* entry = iter.UserData();
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// Ignore disk entries
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if (entry->IsUsingDisk()) {
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continue;
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}
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mSize += entry->GetMetadataMemoryConsumption();
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int64_t size;
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if (NS_SUCCEEDED(entry->GetDataSize(&size))) {
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mSize += size;
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}
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mEntryArray.AppendElement(entry);
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}
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}
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// Next, we dispatch to the main thread
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} else if (NS_IsMainThread()) {
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LOG(("WalkMemoryCacheRunnable::Run - notifying [this=%p]", this));
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if (mNotifyStorage) {
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LOG((" storage"));
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// Second, notify overall storage info
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mCallback->OnCacheStorageInfo(mEntryArray.Length(), mSize,
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CacheObserver::MemoryCacheCapacity(), nullptr);
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if (!mVisitEntries)
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return NS_OK; // done
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mNotifyStorage = false;
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} else {
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LOG((" entry [left=%zu, canceled=%d]", mEntryArray.Length(), (bool)mCancel));
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// Third, notify each entry until depleted or canceled
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if (!mEntryArray.Length() || mCancel) {
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mCallback->OnCacheEntryVisitCompleted();
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return NS_OK; // done
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}
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// Grab the next entry
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RefPtr<CacheEntry> entry = mEntryArray[0];
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mEntryArray.RemoveElementAt(0);
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// Invokes this->OnEntryInfo, that calls the callback with all
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// information of the entry.
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CacheStorageService::GetCacheEntryInfo(entry, this);
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}
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} else {
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MOZ_CRASH("Bad thread");
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return NS_ERROR_FAILURE;
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}
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NS_DispatchToMainThread(this);
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return NS_OK;
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}
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virtual ~WalkMemoryCacheRunnable()
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{
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if (mCallback)
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ProxyReleaseMainThread(
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"WalkMemoryCacheRunnable::mCallback", mCallback);
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}
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virtual void OnEntryInfo(const nsACString & aURISpec, const nsACString & aIdEnhance,
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int64_t aDataSize, int32_t aFetchCount,
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uint32_t aLastModifiedTime, uint32_t aExpirationTime,
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bool aPinned, nsILoadContextInfo* aInfo) override
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{
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nsresult rv;
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nsCOMPtr<nsIURI> uri;
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rv = NS_NewURI(getter_AddRefs(uri), aURISpec);
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if (NS_FAILED(rv)) {
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return;
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}
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rv = mCallback->OnCacheEntryInfo(uri, aIdEnhance, aDataSize, aFetchCount,
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aLastModifiedTime, aExpirationTime,
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aPinned, aInfo);
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if (NS_FAILED(rv)) {
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LOG((" callback failed, canceling the walk"));
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mCancel = true;
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}
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}
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private:
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nsCString mContextKey;
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nsTArray<RefPtr<CacheEntry> > mEntryArray;
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};
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// WalkDiskCacheRunnable
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// Using the cache index information to get the list of files per context.
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class WalkDiskCacheRunnable : public WalkCacheRunnable
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{
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public:
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WalkDiskCacheRunnable(nsILoadContextInfo *aLoadInfo,
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bool aVisitEntries,
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nsICacheStorageVisitor* aVisitor)
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: WalkCacheRunnable(aVisitor, aVisitEntries)
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, mLoadInfo(aLoadInfo)
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, mPass(COLLECT_STATS)
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{
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}
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nsresult Walk()
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{
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// TODO, bug 998693
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// Initial index build should be forced here so that about:cache soon
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// after startup gives some meaningfull results.
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// Dispatch to the INDEX level in hope that very recent cache entries
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// information gets to the index list before we grab the index iterator
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// for the first time. This tries to avoid miss of entries that has
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// been created right before the visit is required.
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RefPtr<CacheIOThread> thread = CacheFileIOManager::IOThread();
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NS_ENSURE_TRUE(thread, NS_ERROR_NOT_INITIALIZED);
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return thread->Dispatch(this, CacheIOThread::INDEX);
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}
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private:
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// Invokes OnCacheEntryInfo callback for each single found entry.
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// There is one instance of this class per one entry.
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class OnCacheEntryInfoRunnable : public Runnable
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{
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public:
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explicit OnCacheEntryInfoRunnable(WalkDiskCacheRunnable* aWalker)
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: Runnable("net::WalkDiskCacheRunnable::OnCacheEntryInfoRunnable")
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, mWalker(aWalker)
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{
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}
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NS_IMETHOD Run() override
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{
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MOZ_ASSERT(NS_IsMainThread());
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nsresult rv;
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nsCOMPtr<nsIURI> uri;
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rv = NS_NewURI(getter_AddRefs(uri), mURISpec);
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if (NS_FAILED(rv)) {
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return NS_OK;
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}
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rv = mWalker->mCallback->OnCacheEntryInfo(
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uri, mIdEnhance, mDataSize, mFetchCount,
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mLastModifiedTime, mExpirationTime, mPinned, mInfo);
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if (NS_FAILED(rv)) {
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mWalker->mCancel = true;
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}
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return NS_OK;
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}
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RefPtr<WalkDiskCacheRunnable> mWalker;
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nsCString mURISpec;
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nsCString mIdEnhance;
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int64_t mDataSize;
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int32_t mFetchCount;
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uint32_t mLastModifiedTime;
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uint32_t mExpirationTime;
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bool mPinned;
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nsCOMPtr<nsILoadContextInfo> mInfo;
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};
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NS_IMETHOD Run() override
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{
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// The main loop
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nsresult rv;
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if (CacheStorageService::IsOnManagementThread()) {
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switch (mPass) {
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case COLLECT_STATS:
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// Get quickly the cache stats.
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uint32_t size;
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rv = CacheIndex::GetCacheStats(mLoadInfo, &size, &mCount);
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if (NS_FAILED(rv)) {
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if (mVisitEntries) {
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// both onStorageInfo and onCompleted are expected
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NS_DispatchToMainThread(this);
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}
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return NS_DispatchToMainThread(this);
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}
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mSize = static_cast<uint64_t>(size) << 10;
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// Invoke onCacheStorageInfo with valid information.
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NS_DispatchToMainThread(this);
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if (!mVisitEntries) {
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return NS_OK; // done
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}
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mPass = ITERATE_METADATA;
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MOZ_FALLTHROUGH;
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case ITERATE_METADATA:
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// Now grab the context iterator.
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if (!mIter) {
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rv = CacheIndex::GetIterator(mLoadInfo, true, getter_AddRefs(mIter));
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if (NS_FAILED(rv)) {
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// Invoke onCacheEntryVisitCompleted now
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return NS_DispatchToMainThread(this);
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}
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}
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while (!mCancel && !CacheObserver::ShuttingDown()) {
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if (CacheIOThread::YieldAndRerun())
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return NS_OK;
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SHA1Sum::Hash hash;
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rv = mIter->GetNextHash(&hash);
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if (NS_FAILED(rv))
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break; // done (or error?)
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// This synchronously invokes OnEntryInfo on this class where we
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// redispatch to the main thread for the consumer callback.
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CacheFileIOManager::GetEntryInfo(&hash, this);
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}
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// Invoke onCacheEntryVisitCompleted on the main thread
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NS_DispatchToMainThread(this);
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}
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} else if (NS_IsMainThread()) {
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if (mNotifyStorage) {
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nsCOMPtr<nsIFile> dir;
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CacheFileIOManager::GetCacheDirectory(getter_AddRefs(dir));
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mCallback->OnCacheStorageInfo(mCount, mSize, CacheObserver::DiskCacheCapacity(), dir);
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mNotifyStorage = false;
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} else {
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mCallback->OnCacheEntryVisitCompleted();
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}
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} else {
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MOZ_CRASH("Bad thread");
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return NS_ERROR_FAILURE;
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}
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return NS_OK;
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}
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virtual void OnEntryInfo(const nsACString & aURISpec, const nsACString & aIdEnhance,
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int64_t aDataSize, int32_t aFetchCount,
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uint32_t aLastModifiedTime, uint32_t aExpirationTime,
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bool aPinned, nsILoadContextInfo* aInfo) override
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{
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// Called directly from CacheFileIOManager::GetEntryInfo.
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// Invoke onCacheEntryInfo on the main thread for this entry.
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RefPtr<OnCacheEntryInfoRunnable> info = new OnCacheEntryInfoRunnable(this);
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info->mURISpec = aURISpec;
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info->mIdEnhance = aIdEnhance;
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info->mDataSize = aDataSize;
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info->mFetchCount = aFetchCount;
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info->mLastModifiedTime = aLastModifiedTime;
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info->mExpirationTime = aExpirationTime;
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info->mPinned = aPinned;
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info->mInfo = aInfo;
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NS_DispatchToMainThread(info);
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}
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RefPtr<nsILoadContextInfo> mLoadInfo;
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enum {
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// First, we collect stats for the load context.
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COLLECT_STATS,
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// Second, if demanded, we iterate over the entries gethered
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// from the iterator and call CacheFileIOManager::GetEntryInfo
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// for each found entry.
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ITERATE_METADATA,
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} mPass;
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|
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RefPtr<CacheIndexIterator> mIter;
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uint32_t mCount;
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};
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} // namespace
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|
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void CacheStorageService::DropPrivateBrowsingEntries()
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{
|
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mozilla::MutexAutoLock lock(mLock);
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|
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if (mShutdown)
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|
return;
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|
|
nsTArray<nsCString> keys;
|
|
for (auto iter = sGlobalEntryTables->Iter(); !iter.Done(); iter.Next()) {
|
|
const nsACString& key = iter.Key();
|
|
nsCOMPtr<nsILoadContextInfo> info = CacheFileUtils::ParseKey(key);
|
|
if (info && info->IsPrivate()) {
|
|
keys.AppendElement(key);
|
|
}
|
|
}
|
|
|
|
for (uint32_t i = 0; i < keys.Length(); ++i) {
|
|
DoomStorageEntries(keys[i], nullptr, true, false, nullptr);
|
|
}
|
|
}
|
|
|
|
namespace {
|
|
|
|
class CleaupCacheDirectoriesRunnable : public Runnable
|
|
{
|
|
public:
|
|
NS_DECL_NSIRUNNABLE
|
|
static bool Post();
|
|
|
|
private:
|
|
CleaupCacheDirectoriesRunnable()
|
|
: Runnable("net::CleaupCacheDirectoriesRunnable")
|
|
{
|
|
nsCacheService::GetDiskCacheDirectory(getter_AddRefs(mCache1Dir));
|
|
CacheFileIOManager::GetCacheDirectory(getter_AddRefs(mCache2Dir));
|
|
#if defined(MOZ_WIDGET_ANDROID)
|
|
CacheFileIOManager::GetProfilelessCacheDirectory(getter_AddRefs(mCache2Profileless));
|
|
#endif
|
|
}
|
|
|
|
virtual ~CleaupCacheDirectoriesRunnable() {}
|
|
nsCOMPtr<nsIFile> mCache1Dir, mCache2Dir;
|
|
#if defined(MOZ_WIDGET_ANDROID)
|
|
nsCOMPtr<nsIFile> mCache2Profileless;
|
|
#endif
|
|
};
|
|
|
|
// static
|
|
bool CleaupCacheDirectoriesRunnable::Post()
|
|
{
|
|
// To obtain the cache1 directory we must unfortunately instantiate the old cache
|
|
// service despite it may not be used at all... This also initializes nsDeleteDir.
|
|
nsCOMPtr<nsICacheService> service = do_GetService(NS_CACHESERVICE_CONTRACTID);
|
|
if (!service)
|
|
return false;
|
|
|
|
nsCOMPtr<nsIEventTarget> thread;
|
|
service->GetCacheIOTarget(getter_AddRefs(thread));
|
|
if (!thread)
|
|
return false;
|
|
|
|
RefPtr<CleaupCacheDirectoriesRunnable> r = new CleaupCacheDirectoriesRunnable();
|
|
thread->Dispatch(r, NS_DISPATCH_NORMAL);
|
|
return true;
|
|
}
|
|
|
|
NS_IMETHODIMP CleaupCacheDirectoriesRunnable::Run()
|
|
{
|
|
MOZ_ASSERT(!NS_IsMainThread());
|
|
|
|
if (mCache1Dir) {
|
|
nsDeleteDir::RemoveOldTrashes(mCache1Dir);
|
|
}
|
|
if (mCache2Dir) {
|
|
nsDeleteDir::RemoveOldTrashes(mCache2Dir);
|
|
}
|
|
#if defined(MOZ_WIDGET_ANDROID)
|
|
if (mCache2Profileless) {
|
|
nsDeleteDir::RemoveOldTrashes(mCache2Profileless);
|
|
// Always delete the profileless cache on Android
|
|
nsDeleteDir::DeleteDir(mCache2Profileless, true, 30000);
|
|
}
|
|
#endif
|
|
|
|
if (mCache1Dir) {
|
|
nsDeleteDir::DeleteDir(mCache1Dir, true, 30000);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
} // namespace
|
|
|
|
// static
|
|
void CacheStorageService::CleaupCacheDirectories()
|
|
{
|
|
// Make sure we schedule just once in case CleaupCacheDirectories gets called
|
|
// multiple times from some reason.
|
|
static bool runOnce = CleaupCacheDirectoriesRunnable::Post();
|
|
if (!runOnce) {
|
|
NS_WARNING("Could not start cache trashes cleanup");
|
|
}
|
|
}
|
|
|
|
// Helper methods
|
|
|
|
// static
|
|
bool CacheStorageService::IsOnManagementThread()
|
|
{
|
|
RefPtr<CacheStorageService> service = Self();
|
|
if (!service)
|
|
return false;
|
|
|
|
nsCOMPtr<nsIEventTarget> target = service->Thread();
|
|
if (!target)
|
|
return false;
|
|
|
|
bool currentThread;
|
|
nsresult rv = target->IsOnCurrentThread(¤tThread);
|
|
return NS_SUCCEEDED(rv) && currentThread;
|
|
}
|
|
|
|
already_AddRefed<nsIEventTarget> CacheStorageService::Thread() const
|
|
{
|
|
return CacheFileIOManager::IOTarget();
|
|
}
|
|
|
|
nsresult CacheStorageService::Dispatch(nsIRunnable* aEvent)
|
|
{
|
|
RefPtr<CacheIOThread> cacheIOThread = CacheFileIOManager::IOThread();
|
|
if (!cacheIOThread)
|
|
return NS_ERROR_NOT_AVAILABLE;
|
|
|
|
return cacheIOThread->Dispatch(aEvent, CacheIOThread::MANAGEMENT);
|
|
}
|
|
|
|
// nsICacheStorageService
|
|
|
|
NS_IMETHODIMP CacheStorageService::MemoryCacheStorage(nsILoadContextInfo *aLoadContextInfo,
|
|
nsICacheStorage * *_retval)
|
|
{
|
|
NS_ENSURE_ARG(aLoadContextInfo);
|
|
NS_ENSURE_ARG(_retval);
|
|
|
|
nsCOMPtr<nsICacheStorage> storage = new CacheStorage(
|
|
aLoadContextInfo, false, false, false, false);
|
|
storage.forget(_retval);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP CacheStorageService::DiskCacheStorage(nsILoadContextInfo *aLoadContextInfo,
|
|
bool aLookupAppCache,
|
|
nsICacheStorage * *_retval)
|
|
{
|
|
NS_ENSURE_ARG(aLoadContextInfo);
|
|
NS_ENSURE_ARG(_retval);
|
|
|
|
// TODO save some heap granularity - cache commonly used storages.
|
|
|
|
// When disk cache is disabled, still provide a storage, but just keep stuff
|
|
// in memory.
|
|
bool useDisk = CacheObserver::UseDiskCache();
|
|
|
|
nsCOMPtr<nsICacheStorage> storage = new CacheStorage(
|
|
aLoadContextInfo, useDisk, aLookupAppCache, false /* size limit */, false /* don't pin */);
|
|
storage.forget(_retval);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP CacheStorageService::PinningCacheStorage(nsILoadContextInfo *aLoadContextInfo,
|
|
nsICacheStorage * *_retval)
|
|
{
|
|
NS_ENSURE_ARG(aLoadContextInfo);
|
|
NS_ENSURE_ARG(_retval);
|
|
|
|
// When disk cache is disabled don't pretend we cache.
|
|
if (!CacheObserver::UseDiskCache()) {
|
|
return NS_ERROR_NOT_AVAILABLE;
|
|
}
|
|
|
|
nsCOMPtr<nsICacheStorage> storage = new CacheStorage(
|
|
aLoadContextInfo, true /* use disk */, false /* no appcache */, true /* ignore size checks */, true /* pin */);
|
|
storage.forget(_retval);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP CacheStorageService::AppCacheStorage(nsILoadContextInfo *aLoadContextInfo,
|
|
nsIApplicationCache *aApplicationCache,
|
|
nsICacheStorage * *_retval)
|
|
{
|
|
NS_ENSURE_ARG(aLoadContextInfo);
|
|
NS_ENSURE_ARG(_retval);
|
|
|
|
nsCOMPtr<nsICacheStorage> storage;
|
|
// Using classification since cl believes we want to instantiate this method
|
|
// having the same name as the desired class...
|
|
storage = new mozilla::net::AppCacheStorage(aLoadContextInfo, aApplicationCache);
|
|
|
|
storage.forget(_retval);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP CacheStorageService::SynthesizedCacheStorage(nsILoadContextInfo *aLoadContextInfo,
|
|
nsICacheStorage * *_retval)
|
|
{
|
|
NS_ENSURE_ARG(aLoadContextInfo);
|
|
NS_ENSURE_ARG(_retval);
|
|
|
|
nsCOMPtr<nsICacheStorage> storage = new CacheStorage(
|
|
aLoadContextInfo, false, false, true /* skip size checks for synthesized cache */, false /* no pinning */);
|
|
storage.forget(_retval);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP CacheStorageService::Clear()
|
|
{
|
|
nsresult rv;
|
|
|
|
// Tell the index to block notification to AsyncGetDiskConsumption.
|
|
// Will be allowed again from CacheFileContextEvictor::EvictEntries()
|
|
// when all the context have been removed from disk.
|
|
CacheIndex::OnAsyncEviction(true);
|
|
|
|
mozilla::MutexAutoLock lock(mLock);
|
|
|
|
{
|
|
mozilla::MutexAutoLock forcedValidEntriesLock(mForcedValidEntriesLock);
|
|
mForcedValidEntries.Clear();
|
|
}
|
|
|
|
NS_ENSURE_TRUE(!mShutdown, NS_ERROR_NOT_INITIALIZED);
|
|
|
|
nsTArray<nsCString> keys;
|
|
for (auto iter = sGlobalEntryTables->Iter(); !iter.Done(); iter.Next()) {
|
|
keys.AppendElement(iter.Key());
|
|
}
|
|
|
|
for (uint32_t i = 0; i < keys.Length(); ++i) {
|
|
DoomStorageEntries(keys[i], nullptr, true, false, nullptr);
|
|
}
|
|
|
|
// Passing null as a load info means to evict all contexts.
|
|
// EvictByContext() respects the entry pinning. EvictAll() does not.
|
|
rv = CacheFileIOManager::EvictByContext(nullptr, false);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP CacheStorageService::PurgeFromMemory(uint32_t aWhat)
|
|
{
|
|
uint32_t what;
|
|
|
|
switch (aWhat) {
|
|
case PURGE_DISK_DATA_ONLY:
|
|
what = CacheEntry::PURGE_DATA_ONLY_DISK_BACKED;
|
|
break;
|
|
|
|
case PURGE_DISK_ALL:
|
|
what = CacheEntry::PURGE_WHOLE_ONLY_DISK_BACKED;
|
|
break;
|
|
|
|
case PURGE_EVERYTHING:
|
|
what = CacheEntry::PURGE_WHOLE;
|
|
break;
|
|
|
|
default:
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
|
|
nsCOMPtr<nsIRunnable> event =
|
|
new PurgeFromMemoryRunnable(this, what);
|
|
|
|
return Dispatch(event);
|
|
}
|
|
|
|
NS_IMETHODIMP CacheStorageService::PurgeFromMemoryRunnable::Run()
|
|
{
|
|
if (NS_IsMainThread()) {
|
|
nsCOMPtr<nsIObserverService> observerService =
|
|
mozilla::services::GetObserverService();
|
|
if (observerService) {
|
|
observerService->NotifyObservers(nullptr, "cacheservice:purge-memory-pools", nullptr);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
if (mService) {
|
|
// TODO not all flags apply to both pools
|
|
mService->Pool(true).PurgeAll(mWhat);
|
|
mService->Pool(false).PurgeAll(mWhat);
|
|
mService = nullptr;
|
|
}
|
|
|
|
NS_DispatchToMainThread(this);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP CacheStorageService::AsyncGetDiskConsumption(
|
|
nsICacheStorageConsumptionObserver* aObserver)
|
|
{
|
|
NS_ENSURE_ARG(aObserver);
|
|
|
|
nsresult rv;
|
|
|
|
rv = CacheIndex::AsyncGetDiskConsumption(aObserver);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP CacheStorageService::GetIoTarget(nsIEventTarget** aEventTarget)
|
|
{
|
|
NS_ENSURE_ARG(aEventTarget);
|
|
|
|
nsCOMPtr<nsIEventTarget> ioTarget = CacheFileIOManager::IOTarget();
|
|
ioTarget.forget(aEventTarget);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP CacheStorageService::AsyncVisitAllStorages(
|
|
nsICacheStorageVisitor* aVisitor,
|
|
bool aVisitEntries)
|
|
{
|
|
LOG(("CacheStorageService::AsyncVisitAllStorages [cb=%p]", aVisitor));
|
|
NS_ENSURE_FALSE(mShutdown, NS_ERROR_NOT_INITIALIZED);
|
|
|
|
// Walking the disk cache also walks the memory cache.
|
|
RefPtr<WalkDiskCacheRunnable> event =
|
|
new WalkDiskCacheRunnable(nullptr, aVisitEntries, aVisitor);
|
|
return event->Walk();
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
// Methods used by CacheEntry for management of in-memory structures.
|
|
|
|
namespace {
|
|
|
|
class FrecencyComparator
|
|
{
|
|
public:
|
|
bool Equals(CacheEntry* a, CacheEntry* b) const {
|
|
return a->GetFrecency() == b->GetFrecency();
|
|
}
|
|
bool LessThan(CacheEntry* a, CacheEntry* b) const {
|
|
return a->GetFrecency() < b->GetFrecency();
|
|
}
|
|
};
|
|
|
|
class ExpirationComparator
|
|
{
|
|
public:
|
|
bool Equals(CacheEntry* a, CacheEntry* b) const {
|
|
return a->GetExpirationTime() == b->GetExpirationTime();
|
|
}
|
|
bool LessThan(CacheEntry* a, CacheEntry* b) const {
|
|
return a->GetExpirationTime() < b->GetExpirationTime();
|
|
}
|
|
};
|
|
|
|
} // namespace
|
|
|
|
void
|
|
CacheStorageService::RegisterEntry(CacheEntry* aEntry)
|
|
{
|
|
MOZ_ASSERT(IsOnManagementThread());
|
|
|
|
if (mShutdown || !aEntry->CanRegister())
|
|
return;
|
|
|
|
TelemetryRecordEntryCreation(aEntry);
|
|
|
|
LOG(("CacheStorageService::RegisterEntry [entry=%p]", aEntry));
|
|
|
|
MemoryPool& pool = Pool(aEntry->IsUsingDisk());
|
|
pool.mFrecencyArray.AppendElement(aEntry);
|
|
pool.mExpirationArray.AppendElement(aEntry);
|
|
|
|
aEntry->SetRegistered(true);
|
|
}
|
|
|
|
void
|
|
CacheStorageService::UnregisterEntry(CacheEntry* aEntry)
|
|
{
|
|
MOZ_ASSERT(IsOnManagementThread());
|
|
|
|
if (!aEntry->IsRegistered())
|
|
return;
|
|
|
|
TelemetryRecordEntryRemoval(aEntry);
|
|
|
|
LOG(("CacheStorageService::UnregisterEntry [entry=%p]", aEntry));
|
|
|
|
MemoryPool& pool = Pool(aEntry->IsUsingDisk());
|
|
mozilla::DebugOnly<bool> removedFrecency = pool.mFrecencyArray.RemoveElement(aEntry);
|
|
mozilla::DebugOnly<bool> removedExpiration = pool.mExpirationArray.RemoveElement(aEntry);
|
|
|
|
MOZ_ASSERT(mShutdown || (removedFrecency && removedExpiration));
|
|
|
|
// Note: aEntry->CanRegister() since now returns false
|
|
aEntry->SetRegistered(false);
|
|
}
|
|
|
|
static bool
|
|
AddExactEntry(CacheEntryTable* aEntries,
|
|
nsACString const& aKey,
|
|
CacheEntry* aEntry,
|
|
bool aOverwrite)
|
|
{
|
|
RefPtr<CacheEntry> existingEntry;
|
|
if (!aOverwrite && aEntries->Get(aKey, getter_AddRefs(existingEntry))) {
|
|
bool equals = existingEntry == aEntry;
|
|
LOG(("AddExactEntry [entry=%p equals=%d]", aEntry, equals));
|
|
return equals; // Already there...
|
|
}
|
|
|
|
LOG(("AddExactEntry [entry=%p put]", aEntry));
|
|
aEntries->Put(aKey, aEntry);
|
|
return true;
|
|
}
|
|
|
|
static bool
|
|
RemoveExactEntry(CacheEntryTable* aEntries,
|
|
nsACString const& aKey,
|
|
CacheEntry* aEntry,
|
|
bool aOverwrite)
|
|
{
|
|
RefPtr<CacheEntry> existingEntry;
|
|
if (!aEntries->Get(aKey, getter_AddRefs(existingEntry))) {
|
|
LOG(("RemoveExactEntry [entry=%p already gone]", aEntry));
|
|
return false; // Already removed...
|
|
}
|
|
|
|
if (!aOverwrite && existingEntry != aEntry) {
|
|
LOG(("RemoveExactEntry [entry=%p already replaced]", aEntry));
|
|
return false; // Already replaced...
|
|
}
|
|
|
|
LOG(("RemoveExactEntry [entry=%p removed]", aEntry));
|
|
aEntries->Remove(aKey);
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
CacheStorageService::RemoveEntry(CacheEntry* aEntry, bool aOnlyUnreferenced)
|
|
{
|
|
LOG(("CacheStorageService::RemoveEntry [entry=%p]", aEntry));
|
|
|
|
nsAutoCString entryKey;
|
|
nsresult rv = aEntry->HashingKey(entryKey);
|
|
if (NS_FAILED(rv)) {
|
|
NS_ERROR("aEntry->HashingKey() failed?");
|
|
return false;
|
|
}
|
|
|
|
mozilla::MutexAutoLock lock(mLock);
|
|
|
|
if (mShutdown) {
|
|
LOG((" after shutdown"));
|
|
return false;
|
|
}
|
|
|
|
if (aOnlyUnreferenced) {
|
|
if (aEntry->IsReferenced()) {
|
|
LOG((" still referenced, not removing"));
|
|
return false;
|
|
}
|
|
|
|
if (!aEntry->IsUsingDisk() && IsForcedValidEntry(aEntry->GetStorageID(), entryKey)) {
|
|
LOG((" forced valid, not removing"));
|
|
return false;
|
|
}
|
|
}
|
|
|
|
CacheEntryTable* entries;
|
|
if (sGlobalEntryTables->Get(aEntry->GetStorageID(), &entries))
|
|
RemoveExactEntry(entries, entryKey, aEntry, false /* don't overwrite */);
|
|
|
|
nsAutoCString memoryStorageID(aEntry->GetStorageID());
|
|
AppendMemoryStorageID(memoryStorageID);
|
|
|
|
if (sGlobalEntryTables->Get(memoryStorageID, &entries))
|
|
RemoveExactEntry(entries, entryKey, aEntry, false /* don't overwrite */);
|
|
|
|
return true;
|
|
}
|
|
|
|
void
|
|
CacheStorageService::RecordMemoryOnlyEntry(CacheEntry* aEntry,
|
|
bool aOnlyInMemory,
|
|
bool aOverwrite)
|
|
{
|
|
LOG(("CacheStorageService::RecordMemoryOnlyEntry [entry=%p, memory=%d, overwrite=%d]",
|
|
aEntry, aOnlyInMemory, aOverwrite));
|
|
// This method is responsible to put this entry to a special record hashtable
|
|
// that contains only entries that are stored in memory.
|
|
// Keep in mind that every entry, regardless of whether is in-memory-only or not
|
|
// is always recorded in the storage master hash table, the one identified by
|
|
// CacheEntry.StorageID().
|
|
|
|
mLock.AssertCurrentThreadOwns();
|
|
|
|
if (mShutdown) {
|
|
LOG((" after shutdown"));
|
|
return;
|
|
}
|
|
|
|
nsresult rv;
|
|
|
|
nsAutoCString entryKey;
|
|
rv = aEntry->HashingKey(entryKey);
|
|
if (NS_FAILED(rv)) {
|
|
NS_ERROR("aEntry->HashingKey() failed?");
|
|
return;
|
|
}
|
|
|
|
CacheEntryTable* entries = nullptr;
|
|
nsAutoCString memoryStorageID(aEntry->GetStorageID());
|
|
AppendMemoryStorageID(memoryStorageID);
|
|
|
|
if (!sGlobalEntryTables->Get(memoryStorageID, &entries)) {
|
|
if (!aOnlyInMemory) {
|
|
LOG((" not recorded as memory only"));
|
|
return;
|
|
}
|
|
|
|
entries = new CacheEntryTable(CacheEntryTable::MEMORY_ONLY);
|
|
sGlobalEntryTables->Put(memoryStorageID, entries);
|
|
LOG((" new memory-only storage table for %s", memoryStorageID.get()));
|
|
}
|
|
|
|
if (aOnlyInMemory) {
|
|
AddExactEntry(entries, entryKey, aEntry, aOverwrite);
|
|
}
|
|
else {
|
|
RemoveExactEntry(entries, entryKey, aEntry, aOverwrite);
|
|
}
|
|
}
|
|
|
|
// Checks if a cache entry is forced valid (will be loaded directly from cache
|
|
// without further validation) - see nsICacheEntry.idl for further details
|
|
bool CacheStorageService::IsForcedValidEntry(nsACString const &aContextKey,
|
|
nsACString const &aEntryKey)
|
|
{
|
|
return IsForcedValidEntry(aContextKey + aEntryKey);
|
|
}
|
|
|
|
bool CacheStorageService::IsForcedValidEntry(nsACString const &aContextEntryKey)
|
|
{
|
|
mozilla::MutexAutoLock lock(mForcedValidEntriesLock);
|
|
|
|
TimeStamp validUntil;
|
|
|
|
if (!mForcedValidEntries.Get(aContextEntryKey, &validUntil)) {
|
|
return false;
|
|
}
|
|
|
|
if (validUntil.IsNull()) {
|
|
return false;
|
|
}
|
|
|
|
// Entry timeout not reached yet
|
|
if (TimeStamp::NowLoRes() <= validUntil) {
|
|
return true;
|
|
}
|
|
|
|
// Entry timeout has been reached
|
|
mForcedValidEntries.Remove(aContextEntryKey);
|
|
return false;
|
|
}
|
|
|
|
// Allows a cache entry to be loaded directly from cache without further
|
|
// validation - see nsICacheEntry.idl for further details
|
|
void CacheStorageService::ForceEntryValidFor(nsACString const &aContextKey,
|
|
nsACString const &aEntryKey,
|
|
uint32_t aSecondsToTheFuture)
|
|
{
|
|
mozilla::MutexAutoLock lock(mForcedValidEntriesLock);
|
|
|
|
TimeStamp now = TimeStamp::NowLoRes();
|
|
ForcedValidEntriesPrune(now);
|
|
|
|
// This will be the timeout
|
|
TimeStamp validUntil = now + TimeDuration::FromSeconds(aSecondsToTheFuture);
|
|
|
|
mForcedValidEntries.Put(aContextKey + aEntryKey, validUntil);
|
|
}
|
|
|
|
void CacheStorageService::RemoveEntryForceValid(nsACString const &aContextKey,
|
|
nsACString const &aEntryKey)
|
|
{
|
|
mozilla::MutexAutoLock lock(mForcedValidEntriesLock);
|
|
|
|
LOG(("CacheStorageService::RemoveEntryForceValid context='%s' entryKey=%s",
|
|
aContextKey.BeginReading(), aEntryKey.BeginReading()));
|
|
mForcedValidEntries.Remove(aContextKey + aEntryKey);
|
|
}
|
|
|
|
// Cleans out the old entries in mForcedValidEntries
|
|
void CacheStorageService::ForcedValidEntriesPrune(TimeStamp &now)
|
|
{
|
|
static TimeDuration const oneMinute = TimeDuration::FromSeconds(60);
|
|
static TimeStamp dontPruneUntil = now + oneMinute;
|
|
if (now < dontPruneUntil)
|
|
return;
|
|
|
|
for (auto iter = mForcedValidEntries.Iter(); !iter.Done(); iter.Next()) {
|
|
if (iter.Data() < now) {
|
|
iter.Remove();
|
|
}
|
|
}
|
|
dontPruneUntil = now + oneMinute;
|
|
}
|
|
|
|
void
|
|
CacheStorageService::OnMemoryConsumptionChange(CacheMemoryConsumer* aConsumer,
|
|
uint32_t aCurrentMemoryConsumption)
|
|
{
|
|
LOG(("CacheStorageService::OnMemoryConsumptionChange [consumer=%p, size=%u]",
|
|
aConsumer, aCurrentMemoryConsumption));
|
|
|
|
uint32_t savedMemorySize = aConsumer->mReportedMemoryConsumption;
|
|
if (savedMemorySize == aCurrentMemoryConsumption)
|
|
return;
|
|
|
|
// Exchange saved size with current one.
|
|
aConsumer->mReportedMemoryConsumption = aCurrentMemoryConsumption;
|
|
|
|
bool usingDisk = !(aConsumer->mFlags & CacheMemoryConsumer::MEMORY_ONLY);
|
|
bool overLimit = Pool(usingDisk).OnMemoryConsumptionChange(
|
|
savedMemorySize, aCurrentMemoryConsumption);
|
|
|
|
if (!overLimit)
|
|
return;
|
|
|
|
// It's likely the timer has already been set when we get here,
|
|
// check outside the lock to save resources.
|
|
if (mPurgeTimer)
|
|
return;
|
|
|
|
// We don't know if this is called under the service lock or not,
|
|
// hence rather dispatch.
|
|
RefPtr<nsIEventTarget> cacheIOTarget = Thread();
|
|
if (!cacheIOTarget)
|
|
return;
|
|
|
|
// Dispatch as a priority task, we want to set the purge timer
|
|
// ASAP to prevent vain redispatch of this event.
|
|
nsCOMPtr<nsIRunnable> event =
|
|
NewRunnableMethod("net::CacheStorageService::SchedulePurgeOverMemoryLimit",
|
|
this,
|
|
&CacheStorageService::SchedulePurgeOverMemoryLimit);
|
|
cacheIOTarget->Dispatch(event, nsIEventTarget::DISPATCH_NORMAL);
|
|
}
|
|
|
|
bool
|
|
CacheStorageService::MemoryPool::OnMemoryConsumptionChange(uint32_t aSavedMemorySize,
|
|
uint32_t aCurrentMemoryConsumption)
|
|
{
|
|
mMemorySize -= aSavedMemorySize;
|
|
mMemorySize += aCurrentMemoryConsumption;
|
|
|
|
LOG((" mMemorySize=%u (+%u,-%u)", uint32_t(mMemorySize), aCurrentMemoryConsumption, aSavedMemorySize));
|
|
|
|
// Bypass purging when memory has not grew up significantly
|
|
if (aCurrentMemoryConsumption <= aSavedMemorySize)
|
|
return false;
|
|
|
|
return mMemorySize > Limit();
|
|
}
|
|
|
|
void
|
|
CacheStorageService::SchedulePurgeOverMemoryLimit()
|
|
{
|
|
LOG(("CacheStorageService::SchedulePurgeOverMemoryLimit"));
|
|
|
|
mozilla::MutexAutoLock lock(mLock);
|
|
|
|
if (mShutdown) {
|
|
LOG((" past shutdown"));
|
|
return;
|
|
}
|
|
|
|
if (mPurgeTimer) {
|
|
LOG((" timer already up"));
|
|
return;
|
|
}
|
|
|
|
mPurgeTimer = NS_NewTimer();
|
|
if (mPurgeTimer) {
|
|
nsresult rv;
|
|
rv = mPurgeTimer->InitWithCallback(this, 1000, nsITimer::TYPE_ONE_SHOT);
|
|
LOG((" timer init rv=0x%08" PRIx32, static_cast<uint32_t>(rv)));
|
|
}
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
CacheStorageService::Notify(nsITimer* aTimer)
|
|
{
|
|
LOG(("CacheStorageService::Notify"));
|
|
|
|
mozilla::MutexAutoLock lock(mLock);
|
|
|
|
if (aTimer == mPurgeTimer) {
|
|
mPurgeTimer = nullptr;
|
|
|
|
nsCOMPtr<nsIRunnable> event =
|
|
NewRunnableMethod("net::CacheStorageService::PurgeOverMemoryLimit",
|
|
this,
|
|
&CacheStorageService::PurgeOverMemoryLimit);
|
|
Dispatch(event);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
CacheStorageService::GetName(nsACString& aName)
|
|
{
|
|
aName.AssignLiteral("CacheStorageService");
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
CacheStorageService::PurgeOverMemoryLimit()
|
|
{
|
|
MOZ_ASSERT(IsOnManagementThread());
|
|
|
|
LOG(("CacheStorageService::PurgeOverMemoryLimit"));
|
|
|
|
static TimeDuration const kFourSeconds = TimeDuration::FromSeconds(4);
|
|
TimeStamp now = TimeStamp::NowLoRes();
|
|
|
|
if (!mLastPurgeTime.IsNull() && now - mLastPurgeTime < kFourSeconds) {
|
|
LOG((" bypassed, too soon"));
|
|
return;
|
|
}
|
|
|
|
mLastPurgeTime = now;
|
|
|
|
Pool(true).PurgeOverMemoryLimit();
|
|
Pool(false).PurgeOverMemoryLimit();
|
|
}
|
|
|
|
void
|
|
CacheStorageService::MemoryPool::PurgeOverMemoryLimit()
|
|
{
|
|
TimeStamp start(TimeStamp::Now());
|
|
|
|
uint32_t const memoryLimit = Limit();
|
|
if (mMemorySize > memoryLimit) {
|
|
LOG((" memory data consumption over the limit, abandon expired entries"));
|
|
PurgeExpired();
|
|
}
|
|
|
|
bool frecencyNeedsSort = true;
|
|
|
|
// No longer makes sense since:
|
|
// Memory entries are never purged partially, only as a whole when the memory
|
|
// cache limit is overreached.
|
|
// Disk entries throw the data away ASAP so that only metadata are kept.
|
|
// TODO when this concept of two separate pools is found working, the code should
|
|
// clean up.
|
|
#if 0
|
|
if (mMemorySize > memoryLimit) {
|
|
LOG((" memory data consumption over the limit, abandon disk backed data"));
|
|
PurgeByFrecency(frecencyNeedsSort, CacheEntry::PURGE_DATA_ONLY_DISK_BACKED);
|
|
}
|
|
|
|
if (mMemorySize > memoryLimit) {
|
|
LOG((" metadata consumtion over the limit, abandon disk backed entries"));
|
|
PurgeByFrecency(frecencyNeedsSort, CacheEntry::PURGE_WHOLE_ONLY_DISK_BACKED);
|
|
}
|
|
#endif
|
|
|
|
if (mMemorySize > memoryLimit) {
|
|
LOG((" memory data consumption over the limit, abandon any entry"));
|
|
PurgeByFrecency(frecencyNeedsSort, CacheEntry::PURGE_WHOLE);
|
|
}
|
|
|
|
LOG((" purging took %1.2fms", (TimeStamp::Now() - start).ToMilliseconds()));
|
|
}
|
|
|
|
void
|
|
CacheStorageService::MemoryPool::PurgeExpired()
|
|
{
|
|
MOZ_ASSERT(IsOnManagementThread());
|
|
|
|
mExpirationArray.Sort(ExpirationComparator());
|
|
uint32_t now = NowInSeconds();
|
|
|
|
uint32_t const memoryLimit = Limit();
|
|
|
|
for (uint32_t i = 0; mMemorySize > memoryLimit && i < mExpirationArray.Length();) {
|
|
if (CacheIOThread::YieldAndRerun())
|
|
return;
|
|
|
|
RefPtr<CacheEntry> entry = mExpirationArray[i];
|
|
|
|
uint32_t expirationTime = entry->GetExpirationTime();
|
|
if (expirationTime > 0 && expirationTime <= now &&
|
|
entry->Purge(CacheEntry::PURGE_WHOLE)) {
|
|
LOG((" purged expired, entry=%p, exptime=%u (now=%u)",
|
|
entry.get(), entry->GetExpirationTime(), now));
|
|
continue;
|
|
}
|
|
|
|
// not purged, move to the next one
|
|
++i;
|
|
}
|
|
}
|
|
|
|
void
|
|
CacheStorageService::MemoryPool::PurgeByFrecency(bool &aFrecencyNeedsSort, uint32_t aWhat)
|
|
{
|
|
MOZ_ASSERT(IsOnManagementThread());
|
|
|
|
if (aFrecencyNeedsSort) {
|
|
mFrecencyArray.Sort(FrecencyComparator());
|
|
aFrecencyNeedsSort = false;
|
|
}
|
|
|
|
uint32_t const memoryLimit = Limit();
|
|
|
|
for (uint32_t i = 0; mMemorySize > memoryLimit && i < mFrecencyArray.Length();) {
|
|
if (CacheIOThread::YieldAndRerun())
|
|
return;
|
|
|
|
RefPtr<CacheEntry> entry = mFrecencyArray[i];
|
|
|
|
if (entry->Purge(aWhat)) {
|
|
LOG((" abandoned (%d), entry=%p, frecency=%1.10f",
|
|
aWhat, entry.get(), entry->GetFrecency()));
|
|
continue;
|
|
}
|
|
|
|
// not purged, move to the next one
|
|
++i;
|
|
}
|
|
}
|
|
|
|
void
|
|
CacheStorageService::MemoryPool::PurgeAll(uint32_t aWhat)
|
|
{
|
|
LOG(("CacheStorageService::MemoryPool::PurgeAll aWhat=%d", aWhat));
|
|
MOZ_ASSERT(IsOnManagementThread());
|
|
|
|
for (uint32_t i = 0; i < mFrecencyArray.Length();) {
|
|
if (CacheIOThread::YieldAndRerun())
|
|
return;
|
|
|
|
RefPtr<CacheEntry> entry = mFrecencyArray[i];
|
|
|
|
if (entry->Purge(aWhat)) {
|
|
LOG((" abandoned entry=%p", entry.get()));
|
|
continue;
|
|
}
|
|
|
|
// not purged, move to the next one
|
|
++i;
|
|
}
|
|
}
|
|
|
|
// Methods exposed to and used by CacheStorage.
|
|
|
|
nsresult
|
|
CacheStorageService::AddStorageEntry(CacheStorage const* aStorage,
|
|
const nsACString & aURI,
|
|
const nsACString & aIdExtension,
|
|
bool aReplace,
|
|
CacheEntryHandle** aResult)
|
|
{
|
|
NS_ENSURE_FALSE(mShutdown, NS_ERROR_NOT_INITIALIZED);
|
|
|
|
NS_ENSURE_ARG(aStorage);
|
|
|
|
nsAutoCString contextKey;
|
|
CacheFileUtils::AppendKeyPrefix(aStorage->LoadInfo(), contextKey);
|
|
|
|
return AddStorageEntry(contextKey, aURI, aIdExtension,
|
|
aStorage->WriteToDisk(),
|
|
aStorage->SkipSizeCheck(),
|
|
aStorage->Pinning(),
|
|
aReplace,
|
|
aResult);
|
|
}
|
|
|
|
nsresult
|
|
CacheStorageService::AddStorageEntry(const nsACString& aContextKey,
|
|
const nsACString & aURI,
|
|
const nsACString & aIdExtension,
|
|
bool aWriteToDisk,
|
|
bool aSkipSizeCheck,
|
|
bool aPin,
|
|
bool aReplace,
|
|
CacheEntryHandle** aResult)
|
|
{
|
|
nsresult rv;
|
|
|
|
nsAutoCString entryKey;
|
|
rv = CacheEntry::HashingKey(EmptyCString(), aIdExtension, aURI, entryKey);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
LOG(("CacheStorageService::AddStorageEntry [entryKey=%s, contextKey=%s]",
|
|
entryKey.get(), aContextKey.BeginReading()));
|
|
|
|
RefPtr<CacheEntry> entry;
|
|
RefPtr<CacheEntryHandle> handle;
|
|
|
|
{
|
|
mozilla::MutexAutoLock lock(mLock);
|
|
|
|
NS_ENSURE_FALSE(mShutdown, NS_ERROR_NOT_INITIALIZED);
|
|
|
|
// Ensure storage table
|
|
CacheEntryTable* entries;
|
|
if (!sGlobalEntryTables->Get(aContextKey, &entries)) {
|
|
entries = new CacheEntryTable(CacheEntryTable::ALL_ENTRIES);
|
|
sGlobalEntryTables->Put(aContextKey, entries);
|
|
LOG((" new storage entries table for context '%s'", aContextKey.BeginReading()));
|
|
}
|
|
|
|
bool entryExists = entries->Get(entryKey, getter_AddRefs(entry));
|
|
|
|
if (entryExists && !aReplace) {
|
|
// check whether we want to turn this entry to a memory-only.
|
|
if (MOZ_UNLIKELY(!aWriteToDisk) && MOZ_LIKELY(entry->IsUsingDisk())) {
|
|
LOG((" entry is persistent but we want mem-only, replacing it"));
|
|
aReplace = true;
|
|
}
|
|
}
|
|
|
|
// If truncate is demanded, delete and doom the current entry
|
|
if (entryExists && aReplace) {
|
|
entries->Remove(entryKey);
|
|
|
|
LOG((" dooming entry %p for %s because of OPEN_TRUNCATE", entry.get(), entryKey.get()));
|
|
// On purpose called under the lock to prevent races of doom and open on I/O thread
|
|
// No need to remove from both memory-only and all-entries tables. The new entry
|
|
// will overwrite the shadow entry in its ctor.
|
|
entry->DoomAlreadyRemoved();
|
|
|
|
entry = nullptr;
|
|
entryExists = false;
|
|
|
|
// Would only lead to deleting force-valid timestamp again. We don't need the
|
|
// replace information anymore after this point anyway.
|
|
aReplace = false;
|
|
}
|
|
|
|
// Ensure entry for the particular URL
|
|
if (!entryExists) {
|
|
// When replacing with a new entry, always remove the current force-valid timestamp,
|
|
// this is the only place to do it.
|
|
if (aReplace) {
|
|
RemoveEntryForceValid(aContextKey, entryKey);
|
|
}
|
|
|
|
// Entry is not in the hashtable or has just been truncated...
|
|
entry = new CacheEntry(aContextKey, aURI, aIdExtension, aWriteToDisk, aSkipSizeCheck, aPin);
|
|
entries->Put(entryKey, entry);
|
|
LOG((" new entry %p for %s", entry.get(), entryKey.get()));
|
|
}
|
|
|
|
if (entry) {
|
|
// Here, if this entry was not for a long time referenced by any consumer,
|
|
// gets again first 'handles count' reference.
|
|
handle = entry->NewHandle();
|
|
}
|
|
}
|
|
|
|
handle.forget(aResult);
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
CacheStorageService::CheckStorageEntry(CacheStorage const* aStorage,
|
|
const nsACString & aURI,
|
|
const nsACString & aIdExtension,
|
|
bool* aResult)
|
|
{
|
|
nsresult rv;
|
|
|
|
nsAutoCString contextKey;
|
|
CacheFileUtils::AppendKeyPrefix(aStorage->LoadInfo(), contextKey);
|
|
|
|
if (!aStorage->WriteToDisk()) {
|
|
AppendMemoryStorageID(contextKey);
|
|
}
|
|
|
|
LOG(("CacheStorageService::CheckStorageEntry [uri=%s, eid=%s, contextKey=%s]",
|
|
aURI.BeginReading(), aIdExtension.BeginReading(), contextKey.get()));
|
|
|
|
{
|
|
mozilla::MutexAutoLock lock(mLock);
|
|
|
|
NS_ENSURE_FALSE(mShutdown, NS_ERROR_NOT_INITIALIZED);
|
|
|
|
nsAutoCString entryKey;
|
|
rv = CacheEntry::HashingKey(EmptyCString(), aIdExtension, aURI, entryKey);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
CacheEntryTable* entries;
|
|
if ((*aResult = sGlobalEntryTables->Get(contextKey, &entries)) &&
|
|
entries->GetWeak(entryKey, aResult)) {
|
|
LOG((" found in hash tables"));
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
if (!aStorage->WriteToDisk()) {
|
|
// Memory entry, nothing more to do.
|
|
LOG((" not found in hash tables"));
|
|
return NS_OK;
|
|
}
|
|
|
|
// Disk entry, not found in the hashtable, check the index.
|
|
nsAutoCString fileKey;
|
|
rv = CacheEntry::HashingKey(contextKey, aIdExtension, aURI, fileKey);
|
|
|
|
CacheIndex::EntryStatus status;
|
|
rv = CacheIndex::HasEntry(fileKey, &status);
|
|
if (NS_FAILED(rv) || status == CacheIndex::DO_NOT_KNOW) {
|
|
LOG((" index doesn't know, rv=0x%08" PRIx32, static_cast<uint32_t>(rv)));
|
|
return NS_ERROR_NOT_AVAILABLE;
|
|
}
|
|
|
|
*aResult = status == CacheIndex::EXISTS;
|
|
LOG((" %sfound in index", *aResult ? "" : "not "));
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
CacheStorageService::GetCacheIndexEntryAttrs(CacheStorage const* aStorage,
|
|
const nsACString &aURI,
|
|
const nsACString &aIdExtension,
|
|
bool *aHasAltData,
|
|
uint32_t *aFileSizeKb)
|
|
{
|
|
nsresult rv;
|
|
|
|
nsAutoCString contextKey;
|
|
CacheFileUtils::AppendKeyPrefix(aStorage->LoadInfo(), contextKey);
|
|
|
|
LOG(("CacheStorageService::GetCacheIndexEntryAttrs [uri=%s, eid=%s, contextKey=%s]",
|
|
aURI.BeginReading(), aIdExtension.BeginReading(), contextKey.get()));
|
|
|
|
nsAutoCString fileKey;
|
|
rv = CacheEntry::HashingKey(contextKey, aIdExtension, aURI, fileKey);
|
|
if (NS_FAILED(rv)) {
|
|
return rv;
|
|
}
|
|
|
|
*aHasAltData = false;
|
|
*aFileSizeKb = 0;
|
|
auto closure = [&aHasAltData, &aFileSizeKb](const CacheIndexEntry *entry) {
|
|
*aHasAltData = entry->GetHasAltData();
|
|
*aFileSizeKb = entry->GetFileSize();
|
|
};
|
|
|
|
CacheIndex::EntryStatus status;
|
|
rv = CacheIndex::HasEntry(fileKey, &status, closure);
|
|
if (NS_FAILED(rv)) {
|
|
return rv;
|
|
}
|
|
|
|
if (status != CacheIndex::EXISTS) {
|
|
return NS_ERROR_CACHE_KEY_NOT_FOUND;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
namespace {
|
|
|
|
class CacheEntryDoomByKeyCallback : public CacheFileIOListener
|
|
, public nsIRunnable
|
|
{
|
|
public:
|
|
NS_DECL_THREADSAFE_ISUPPORTS
|
|
NS_DECL_NSIRUNNABLE
|
|
|
|
explicit CacheEntryDoomByKeyCallback(nsICacheEntryDoomCallback* aCallback)
|
|
: mCallback(aCallback) { }
|
|
|
|
private:
|
|
virtual ~CacheEntryDoomByKeyCallback();
|
|
|
|
NS_IMETHOD OnFileOpened(CacheFileHandle *aHandle, nsresult aResult) override { return NS_OK; }
|
|
NS_IMETHOD OnDataWritten(CacheFileHandle *aHandle, const char *aBuf, nsresult aResult) override { return NS_OK; }
|
|
NS_IMETHOD OnDataRead(CacheFileHandle *aHandle, char *aBuf, nsresult aResult) override { return NS_OK; }
|
|
NS_IMETHOD OnFileDoomed(CacheFileHandle *aHandle, nsresult aResult) override;
|
|
NS_IMETHOD OnEOFSet(CacheFileHandle *aHandle, nsresult aResult) override { return NS_OK; }
|
|
NS_IMETHOD OnFileRenamed(CacheFileHandle *aHandle, nsresult aResult) override { return NS_OK; }
|
|
|
|
nsCOMPtr<nsICacheEntryDoomCallback> mCallback;
|
|
nsresult mResult;
|
|
};
|
|
|
|
CacheEntryDoomByKeyCallback::~CacheEntryDoomByKeyCallback()
|
|
{
|
|
if (mCallback)
|
|
ProxyReleaseMainThread(
|
|
"CacheEntryDoomByKeyCallback::mCallback", mCallback);
|
|
}
|
|
|
|
NS_IMETHODIMP CacheEntryDoomByKeyCallback::OnFileDoomed(CacheFileHandle *aHandle,
|
|
nsresult aResult)
|
|
{
|
|
if (!mCallback)
|
|
return NS_OK;
|
|
|
|
mResult = aResult;
|
|
if (NS_IsMainThread()) {
|
|
Run();
|
|
} else {
|
|
NS_DispatchToMainThread(this);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP CacheEntryDoomByKeyCallback::Run()
|
|
{
|
|
mCallback->OnCacheEntryDoomed(mResult);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMPL_ISUPPORTS(CacheEntryDoomByKeyCallback, CacheFileIOListener, nsIRunnable);
|
|
|
|
} // namespace
|
|
|
|
nsresult
|
|
CacheStorageService::DoomStorageEntry(CacheStorage const* aStorage,
|
|
const nsACString & aURI,
|
|
const nsACString & aIdExtension,
|
|
nsICacheEntryDoomCallback* aCallback)
|
|
{
|
|
LOG(("CacheStorageService::DoomStorageEntry"));
|
|
|
|
NS_ENSURE_ARG(aStorage);
|
|
|
|
nsAutoCString contextKey;
|
|
CacheFileUtils::AppendKeyPrefix(aStorage->LoadInfo(), contextKey);
|
|
|
|
nsAutoCString entryKey;
|
|
nsresult rv = CacheEntry::HashingKey(EmptyCString(), aIdExtension, aURI, entryKey);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
RefPtr<CacheEntry> entry;
|
|
{
|
|
mozilla::MutexAutoLock lock(mLock);
|
|
|
|
NS_ENSURE_FALSE(mShutdown, NS_ERROR_NOT_INITIALIZED);
|
|
|
|
CacheEntryTable* entries;
|
|
if (sGlobalEntryTables->Get(contextKey, &entries)) {
|
|
if (entries->Get(entryKey, getter_AddRefs(entry))) {
|
|
if (aStorage->WriteToDisk() || !entry->IsUsingDisk()) {
|
|
// When evicting from disk storage, purge
|
|
// When evicting from memory storage and the entry is memory-only, purge
|
|
LOG((" purging entry %p for %s [storage use disk=%d, entry use disk=%d]",
|
|
entry.get(), entryKey.get(), aStorage->WriteToDisk(), entry->IsUsingDisk()));
|
|
entries->Remove(entryKey);
|
|
}
|
|
else {
|
|
// Otherwise, leave it
|
|
LOG((" leaving entry %p for %s [storage use disk=%d, entry use disk=%d]",
|
|
entry.get(), entryKey.get(), aStorage->WriteToDisk(), entry->IsUsingDisk()));
|
|
entry = nullptr;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!entry) {
|
|
RemoveEntryForceValid(contextKey, entryKey);
|
|
}
|
|
}
|
|
|
|
if (entry) {
|
|
LOG((" dooming entry %p for %s", entry.get(), entryKey.get()));
|
|
return entry->AsyncDoom(aCallback);
|
|
}
|
|
|
|
LOG((" no entry loaded for %s", entryKey.get()));
|
|
|
|
if (aStorage->WriteToDisk()) {
|
|
nsAutoCString contextKey;
|
|
CacheFileUtils::AppendKeyPrefix(aStorage->LoadInfo(), contextKey);
|
|
|
|
rv = CacheEntry::HashingKey(contextKey, aIdExtension, aURI, entryKey);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
LOG((" dooming file only for %s", entryKey.get()));
|
|
|
|
RefPtr<CacheEntryDoomByKeyCallback> callback(
|
|
new CacheEntryDoomByKeyCallback(aCallback));
|
|
rv = CacheFileIOManager::DoomFileByKey(entryKey, callback);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
class Callback : public Runnable
|
|
{
|
|
public:
|
|
explicit Callback(nsICacheEntryDoomCallback* aCallback)
|
|
: mozilla::Runnable("Callback")
|
|
, mCallback(aCallback)
|
|
{
|
|
}
|
|
NS_IMETHOD Run() override
|
|
{
|
|
mCallback->OnCacheEntryDoomed(NS_ERROR_NOT_AVAILABLE);
|
|
return NS_OK;
|
|
}
|
|
nsCOMPtr<nsICacheEntryDoomCallback> mCallback;
|
|
};
|
|
|
|
if (aCallback) {
|
|
RefPtr<Runnable> callback = new Callback(aCallback);
|
|
return NS_DispatchToMainThread(callback);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
CacheStorageService::DoomStorageEntries(CacheStorage const* aStorage,
|
|
nsICacheEntryDoomCallback* aCallback)
|
|
{
|
|
LOG(("CacheStorageService::DoomStorageEntries"));
|
|
|
|
NS_ENSURE_FALSE(mShutdown, NS_ERROR_NOT_INITIALIZED);
|
|
NS_ENSURE_ARG(aStorage);
|
|
|
|
nsAutoCString contextKey;
|
|
CacheFileUtils::AppendKeyPrefix(aStorage->LoadInfo(), contextKey);
|
|
|
|
mozilla::MutexAutoLock lock(mLock);
|
|
|
|
return DoomStorageEntries(contextKey, aStorage->LoadInfo(),
|
|
aStorage->WriteToDisk(), aStorage->Pinning(),
|
|
aCallback);
|
|
}
|
|
|
|
nsresult
|
|
CacheStorageService::DoomStorageEntries(const nsACString& aContextKey,
|
|
nsILoadContextInfo* aContext,
|
|
bool aDiskStorage,
|
|
bool aPinned,
|
|
nsICacheEntryDoomCallback* aCallback)
|
|
{
|
|
LOG(("CacheStorageService::DoomStorageEntries [context=%s]", aContextKey.BeginReading()));
|
|
|
|
mLock.AssertCurrentThreadOwns();
|
|
|
|
NS_ENSURE_TRUE(!mShutdown, NS_ERROR_NOT_INITIALIZED);
|
|
|
|
nsAutoCString memoryStorageID(aContextKey);
|
|
AppendMemoryStorageID(memoryStorageID);
|
|
|
|
if (aDiskStorage) {
|
|
LOG((" dooming disk+memory storage of %s", aContextKey.BeginReading()));
|
|
|
|
// Walk one by one and remove entries according their pin status
|
|
CacheEntryTable *diskEntries, *memoryEntries;
|
|
if (sGlobalEntryTables->Get(aContextKey, &diskEntries)) {
|
|
sGlobalEntryTables->Get(memoryStorageID, &memoryEntries);
|
|
|
|
for (auto iter = diskEntries->Iter(); !iter.Done(); iter.Next()) {
|
|
auto entry = iter.Data();
|
|
if (entry->DeferOrBypassRemovalOnPinStatus(aPinned)) {
|
|
continue;
|
|
}
|
|
|
|
if (memoryEntries) {
|
|
RemoveExactEntry(memoryEntries, iter.Key(), entry, false);
|
|
}
|
|
iter.Remove();
|
|
}
|
|
}
|
|
|
|
if (aContext && !aContext->IsPrivate()) {
|
|
LOG((" dooming disk entries"));
|
|
CacheFileIOManager::EvictByContext(aContext, aPinned);
|
|
}
|
|
} else {
|
|
LOG((" dooming memory-only storage of %s", aContextKey.BeginReading()));
|
|
|
|
// Remove the memory entries table from the global tables.
|
|
// Since we store memory entries also in the disk entries table
|
|
// we need to remove the memory entries from the disk table one
|
|
// by one manually.
|
|
nsAutoPtr<CacheEntryTable> memoryEntries;
|
|
sGlobalEntryTables->Remove(memoryStorageID, &memoryEntries);
|
|
|
|
CacheEntryTable* diskEntries;
|
|
if (memoryEntries && sGlobalEntryTables->Get(aContextKey, &diskEntries)) {
|
|
for (auto iter = memoryEntries->Iter(); !iter.Done(); iter.Next()) {
|
|
auto entry = iter.Data();
|
|
RemoveExactEntry(diskEntries, iter.Key(), entry, false);
|
|
}
|
|
}
|
|
}
|
|
|
|
{
|
|
mozilla::MutexAutoLock lock(mForcedValidEntriesLock);
|
|
|
|
if (aContext) {
|
|
for (auto iter = mForcedValidEntries.Iter(); !iter.Done(); iter.Next()) {
|
|
bool matches;
|
|
DebugOnly<nsresult> rv = CacheFileUtils::KeyMatchesLoadContextInfo(
|
|
iter.Key(), aContext, &matches);
|
|
MOZ_ASSERT(NS_SUCCEEDED(rv));
|
|
|
|
if (matches) {
|
|
iter.Remove();
|
|
}
|
|
}
|
|
} else {
|
|
mForcedValidEntries.Clear();
|
|
}
|
|
}
|
|
|
|
// An artificial callback. This is a candidate for removal tho. In the new
|
|
// cache any 'doom' or 'evict' function ensures that the entry or entries
|
|
// being doomed is/are not accessible after the function returns. So there is
|
|
// probably no need for a callback - has no meaning. But for compatibility
|
|
// with the old cache that is still in the tree we keep the API similar to be
|
|
// able to make tests as well as other consumers work for now.
|
|
class Callback : public Runnable
|
|
{
|
|
public:
|
|
explicit Callback(nsICacheEntryDoomCallback* aCallback)
|
|
: mozilla::Runnable("Callback")
|
|
, mCallback(aCallback)
|
|
{
|
|
}
|
|
NS_IMETHOD Run() override
|
|
{
|
|
mCallback->OnCacheEntryDoomed(NS_OK);
|
|
return NS_OK;
|
|
}
|
|
nsCOMPtr<nsICacheEntryDoomCallback> mCallback;
|
|
};
|
|
|
|
if (aCallback) {
|
|
RefPtr<Runnable> callback = new Callback(aCallback);
|
|
return NS_DispatchToMainThread(callback);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
CacheStorageService::WalkStorageEntries(CacheStorage const* aStorage,
|
|
bool aVisitEntries,
|
|
nsICacheStorageVisitor* aVisitor)
|
|
{
|
|
LOG(("CacheStorageService::WalkStorageEntries [cb=%p, visitentries=%d]", aVisitor, aVisitEntries));
|
|
NS_ENSURE_FALSE(mShutdown, NS_ERROR_NOT_INITIALIZED);
|
|
|
|
NS_ENSURE_ARG(aStorage);
|
|
|
|
if (aStorage->WriteToDisk()) {
|
|
RefPtr<WalkDiskCacheRunnable> event =
|
|
new WalkDiskCacheRunnable(aStorage->LoadInfo(), aVisitEntries, aVisitor);
|
|
return event->Walk();
|
|
}
|
|
|
|
RefPtr<WalkMemoryCacheRunnable> event =
|
|
new WalkMemoryCacheRunnable(aStorage->LoadInfo(), aVisitEntries, aVisitor);
|
|
return event->Walk();
|
|
}
|
|
|
|
void
|
|
CacheStorageService::CacheFileDoomed(nsILoadContextInfo* aLoadContextInfo,
|
|
const nsACString & aIdExtension,
|
|
const nsACString & aURISpec)
|
|
{
|
|
nsAutoCString contextKey;
|
|
CacheFileUtils::AppendKeyPrefix(aLoadContextInfo, contextKey);
|
|
|
|
nsAutoCString entryKey;
|
|
CacheEntry::HashingKey(EmptyCString(), aIdExtension, aURISpec, entryKey);
|
|
|
|
mozilla::MutexAutoLock lock(mLock);
|
|
|
|
if (mShutdown) {
|
|
return;
|
|
}
|
|
|
|
CacheEntryTable* entries;
|
|
RefPtr<CacheEntry> entry;
|
|
|
|
if (sGlobalEntryTables->Get(contextKey, &entries) &&
|
|
entries->Get(entryKey, getter_AddRefs(entry))) {
|
|
if (entry->IsFileDoomed()) {
|
|
// Need to remove under the lock to avoid possible race leading
|
|
// to duplication of the entry per its key.
|
|
RemoveExactEntry(entries, entryKey, entry, false);
|
|
entry->DoomAlreadyRemoved();
|
|
}
|
|
|
|
// Entry found, but it's not the entry that has been found doomed
|
|
// by the lower eviction layer. Just leave everything unchanged.
|
|
return;
|
|
}
|
|
|
|
RemoveEntryForceValid(contextKey, entryKey);
|
|
}
|
|
|
|
bool
|
|
CacheStorageService::GetCacheEntryInfo(nsILoadContextInfo* aLoadContextInfo,
|
|
const nsACString & aIdExtension,
|
|
const nsACString & aURISpec,
|
|
EntryInfoCallback *aCallback)
|
|
{
|
|
nsAutoCString contextKey;
|
|
CacheFileUtils::AppendKeyPrefix(aLoadContextInfo, contextKey);
|
|
|
|
nsAutoCString entryKey;
|
|
CacheEntry::HashingKey(EmptyCString(), aIdExtension, aURISpec, entryKey);
|
|
|
|
RefPtr<CacheEntry> entry;
|
|
{
|
|
mozilla::MutexAutoLock lock(mLock);
|
|
|
|
if (mShutdown) {
|
|
return false;
|
|
}
|
|
|
|
CacheEntryTable* entries;
|
|
if (!sGlobalEntryTables->Get(contextKey, &entries)) {
|
|
return false;
|
|
}
|
|
|
|
if (!entries->Get(entryKey, getter_AddRefs(entry))) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
GetCacheEntryInfo(entry, aCallback);
|
|
return true;
|
|
}
|
|
|
|
// static
|
|
void
|
|
CacheStorageService::GetCacheEntryInfo(CacheEntry* aEntry,
|
|
EntryInfoCallback *aCallback)
|
|
{
|
|
nsCString const uriSpec = aEntry->GetURI();
|
|
nsCString const enhanceId = aEntry->GetEnhanceID();
|
|
|
|
nsAutoCString entryKey;
|
|
aEntry->HashingKeyWithStorage(entryKey);
|
|
|
|
nsCOMPtr<nsILoadContextInfo> info =
|
|
CacheFileUtils::ParseKey(entryKey);
|
|
|
|
uint32_t dataSize;
|
|
if (NS_FAILED(aEntry->GetStorageDataSize(&dataSize))) {
|
|
dataSize = 0;
|
|
}
|
|
int32_t fetchCount;
|
|
if (NS_FAILED(aEntry->GetFetchCount(&fetchCount))) {
|
|
fetchCount = 0;
|
|
}
|
|
uint32_t lastModified;
|
|
if (NS_FAILED(aEntry->GetLastModified(&lastModified))) {
|
|
lastModified = 0;
|
|
}
|
|
uint32_t expirationTime;
|
|
if (NS_FAILED(aEntry->GetExpirationTime(&expirationTime))) {
|
|
expirationTime = 0;
|
|
}
|
|
|
|
aCallback->OnEntryInfo(uriSpec, enhanceId, dataSize,
|
|
fetchCount, lastModified, expirationTime,
|
|
aEntry->IsPinned(), info);
|
|
}
|
|
|
|
// static
|
|
uint32_t CacheStorageService::CacheQueueSize(bool highPriority)
|
|
{
|
|
RefPtr<CacheIOThread> thread = CacheFileIOManager::IOThread();
|
|
// The thread will be null at shutdown.
|
|
if (!thread) {
|
|
return 0;
|
|
}
|
|
return thread->QueueSize(highPriority);
|
|
}
|
|
|
|
// Telemetry collection
|
|
|
|
namespace {
|
|
|
|
bool TelemetryEntryKey(CacheEntry const* entry, nsAutoCString& key)
|
|
{
|
|
nsAutoCString entryKey;
|
|
nsresult rv = entry->HashingKey(entryKey);
|
|
if (NS_FAILED(rv))
|
|
return false;
|
|
|
|
if (entry->GetStorageID().IsEmpty()) {
|
|
// Hopefully this will be const-copied, saves some memory
|
|
key = entryKey;
|
|
} else {
|
|
key.Assign(entry->GetStorageID());
|
|
key.Append(':');
|
|
key.Append(entryKey);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
} // namespace
|
|
|
|
void
|
|
CacheStorageService::TelemetryPrune(TimeStamp &now)
|
|
{
|
|
static TimeDuration const oneMinute = TimeDuration::FromSeconds(60);
|
|
static TimeStamp dontPruneUntil = now + oneMinute;
|
|
if (now < dontPruneUntil)
|
|
return;
|
|
|
|
static TimeDuration const fifteenMinutes = TimeDuration::FromSeconds(900);
|
|
for (auto iter = mPurgeTimeStamps.Iter(); !iter.Done(); iter.Next()) {
|
|
if (now - iter.Data() > fifteenMinutes) {
|
|
// We are not interested in resurrection of entries after 15 minutes
|
|
// of time. This is also the limit for the telemetry.
|
|
iter.Remove();
|
|
}
|
|
}
|
|
dontPruneUntil = now + oneMinute;
|
|
}
|
|
|
|
void
|
|
CacheStorageService::TelemetryRecordEntryCreation(CacheEntry const* entry)
|
|
{
|
|
MOZ_ASSERT(CacheStorageService::IsOnManagementThread());
|
|
|
|
nsAutoCString key;
|
|
if (!TelemetryEntryKey(entry, key))
|
|
return;
|
|
|
|
TimeStamp now = TimeStamp::NowLoRes();
|
|
TelemetryPrune(now);
|
|
|
|
// When an entry is craeted (registered actually) we check if there is
|
|
// a timestamp marked when this very same cache entry has been removed
|
|
// (deregistered) because of over-memory-limit purging. If there is such
|
|
// a timestamp found accumulate telemetry on how long the entry was away.
|
|
TimeStamp timeStamp;
|
|
if (!mPurgeTimeStamps.Get(key, &timeStamp))
|
|
return;
|
|
|
|
mPurgeTimeStamps.Remove(key);
|
|
|
|
Telemetry::AccumulateTimeDelta(Telemetry::HTTP_CACHE_ENTRY_RELOAD_TIME,
|
|
timeStamp, TimeStamp::NowLoRes());
|
|
}
|
|
|
|
void
|
|
CacheStorageService::TelemetryRecordEntryRemoval(CacheEntry const* entry)
|
|
{
|
|
MOZ_ASSERT(CacheStorageService::IsOnManagementThread());
|
|
|
|
// Doomed entries must not be considered, we are only interested in purged
|
|
// entries. Note that the mIsDoomed flag is always set before deregistration
|
|
// happens.
|
|
if (entry->IsDoomed())
|
|
return;
|
|
|
|
nsAutoCString key;
|
|
if (!TelemetryEntryKey(entry, key))
|
|
return;
|
|
|
|
// When an entry is removed (deregistered actually) we put a timestamp for this
|
|
// entry to the hashtable so that when the entry is created (registered) again
|
|
// we know how long it was away. Also accumulate number of AsyncOpen calls on
|
|
// the entry, this tells us how efficiently the pool actually works.
|
|
|
|
TimeStamp now = TimeStamp::NowLoRes();
|
|
TelemetryPrune(now);
|
|
mPurgeTimeStamps.Put(key, now);
|
|
|
|
Telemetry::Accumulate(Telemetry::HTTP_CACHE_ENTRY_REUSE_COUNT, entry->UseCount());
|
|
Telemetry::AccumulateTimeDelta(Telemetry::HTTP_CACHE_ENTRY_ALIVE_TIME,
|
|
entry->LoadStart(), TimeStamp::NowLoRes());
|
|
}
|
|
|
|
// nsIMemoryReporter
|
|
|
|
size_t
|
|
CacheStorageService::SizeOfExcludingThis(mozilla::MallocSizeOf mallocSizeOf) const
|
|
{
|
|
CacheStorageService::Self()->Lock().AssertCurrentThreadOwns();
|
|
|
|
size_t n = 0;
|
|
// The elemets are referenced by sGlobalEntryTables and are reported from there
|
|
n += Pool(true).mFrecencyArray.ShallowSizeOfExcludingThis(mallocSizeOf);
|
|
n += Pool(true).mExpirationArray.ShallowSizeOfExcludingThis(mallocSizeOf);
|
|
n += Pool(false).mFrecencyArray.ShallowSizeOfExcludingThis(mallocSizeOf);
|
|
n += Pool(false).mExpirationArray.ShallowSizeOfExcludingThis(mallocSizeOf);
|
|
// Entries reported manually in CacheStorageService::CollectReports callback
|
|
if (sGlobalEntryTables) {
|
|
n += sGlobalEntryTables->ShallowSizeOfIncludingThis(mallocSizeOf);
|
|
}
|
|
|
|
return n;
|
|
}
|
|
|
|
size_t
|
|
CacheStorageService::SizeOfIncludingThis(mozilla::MallocSizeOf mallocSizeOf) const
|
|
{
|
|
return mallocSizeOf(this) + SizeOfExcludingThis(mallocSizeOf);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
CacheStorageService::CollectReports(nsIHandleReportCallback* aHandleReport,
|
|
nsISupports* aData, bool aAnonymize)
|
|
{
|
|
MOZ_COLLECT_REPORT(
|
|
"explicit/network/cache2/io", KIND_HEAP, UNITS_BYTES,
|
|
CacheFileIOManager::SizeOfIncludingThis(MallocSizeOf),
|
|
"Memory used by the cache IO manager.");
|
|
|
|
MOZ_COLLECT_REPORT(
|
|
"explicit/network/cache2/index", KIND_HEAP, UNITS_BYTES,
|
|
CacheIndex::SizeOfIncludingThis(MallocSizeOf),
|
|
"Memory used by the cache index.");
|
|
|
|
MutexAutoLock lock(mLock);
|
|
|
|
// Report the service instance, this doesn't report entries, done lower
|
|
MOZ_COLLECT_REPORT(
|
|
"explicit/network/cache2/service", KIND_HEAP, UNITS_BYTES,
|
|
SizeOfIncludingThis(MallocSizeOf),
|
|
"Memory used by the cache storage service.");
|
|
|
|
// Report all entries, each storage separately (by the context key)
|
|
//
|
|
// References are:
|
|
// sGlobalEntryTables to N CacheEntryTable
|
|
// CacheEntryTable to N CacheEntry
|
|
// CacheEntry to 1 CacheFile
|
|
// CacheFile to
|
|
// N CacheFileChunk (keeping the actual data)
|
|
// 1 CacheFileMetadata (keeping http headers etc.)
|
|
// 1 CacheFileOutputStream
|
|
// N CacheFileInputStream
|
|
if (sGlobalEntryTables) {
|
|
for (auto iter1 = sGlobalEntryTables->Iter(); !iter1.Done(); iter1.Next()) {
|
|
CacheStorageService::Self()->Lock().AssertCurrentThreadOwns();
|
|
|
|
CacheEntryTable* table = iter1.UserData();
|
|
|
|
size_t size = 0;
|
|
mozilla::MallocSizeOf mallocSizeOf = CacheStorageService::MallocSizeOf;
|
|
|
|
size += table->ShallowSizeOfIncludingThis(mallocSizeOf);
|
|
for (auto iter2 = table->Iter(); !iter2.Done(); iter2.Next()) {
|
|
size += iter2.Key().SizeOfExcludingThisIfUnshared(mallocSizeOf);
|
|
|
|
// Bypass memory-only entries, those will be reported when iterating the
|
|
// memory only table. Memory-only entries are stored in both ALL_ENTRIES
|
|
// and MEMORY_ONLY hashtables.
|
|
RefPtr<mozilla::net::CacheEntry> const& entry = iter2.Data();
|
|
if (table->Type() == CacheEntryTable::MEMORY_ONLY ||
|
|
entry->IsUsingDisk()) {
|
|
size += entry->SizeOfIncludingThis(mallocSizeOf);
|
|
}
|
|
}
|
|
|
|
// These key names are not privacy-sensitive.
|
|
aHandleReport->Callback(
|
|
EmptyCString(),
|
|
nsPrintfCString("explicit/network/cache2/%s-storage(%s)",
|
|
table->Type() == CacheEntryTable::MEMORY_ONLY ? "memory" : "disk",
|
|
iter1.Key().BeginReading()),
|
|
nsIMemoryReporter::KIND_HEAP, nsIMemoryReporter::UNITS_BYTES, size,
|
|
NS_LITERAL_CSTRING("Memory used by the cache storage."),
|
|
aData);
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
// nsICacheTesting
|
|
|
|
NS_IMETHODIMP
|
|
CacheStorageService::IOThreadSuspender::Run()
|
|
{
|
|
MonitorAutoLock mon(mMon);
|
|
while (!mSignaled) {
|
|
mon.Wait();
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
CacheStorageService::IOThreadSuspender::Notify()
|
|
{
|
|
MonitorAutoLock mon(mMon);
|
|
mSignaled = true;
|
|
mon.Notify();
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
CacheStorageService::SuspendCacheIOThread(uint32_t aLevel)
|
|
{
|
|
RefPtr<CacheIOThread> thread = CacheFileIOManager::IOThread();
|
|
if (!thread) {
|
|
return NS_ERROR_NOT_AVAILABLE;
|
|
}
|
|
|
|
MOZ_ASSERT(!mActiveIOSuspender);
|
|
mActiveIOSuspender = new IOThreadSuspender();
|
|
return thread->Dispatch(mActiveIOSuspender, aLevel);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
CacheStorageService::ResumeCacheIOThread()
|
|
{
|
|
MOZ_ASSERT(mActiveIOSuspender);
|
|
|
|
RefPtr<IOThreadSuspender> suspender;
|
|
suspender.swap(mActiveIOSuspender);
|
|
suspender->Notify();
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
CacheStorageService::Flush(nsIObserver* aObserver)
|
|
{
|
|
RefPtr<CacheIOThread> thread = CacheFileIOManager::IOThread();
|
|
if (!thread) {
|
|
return NS_ERROR_NOT_AVAILABLE;
|
|
}
|
|
|
|
nsCOMPtr<nsIObserverService> observerService =
|
|
mozilla::services::GetObserverService();
|
|
if (!observerService) {
|
|
return NS_ERROR_NOT_AVAILABLE;
|
|
}
|
|
|
|
// Adding as weak, the consumer is responsible to keep the reference
|
|
// until notified.
|
|
observerService->AddObserver(aObserver, "cacheservice:purge-memory-pools", false);
|
|
|
|
// This runnable will do the purging and when done, notifies the above observer.
|
|
// We dispatch it to the CLOSE level, so all data writes scheduled up to this time
|
|
// will be done before this purging happens.
|
|
RefPtr<CacheStorageService::PurgeFromMemoryRunnable> r =
|
|
new CacheStorageService::PurgeFromMemoryRunnable(this, CacheEntry::PURGE_WHOLE);
|
|
|
|
return thread->Dispatch(r, CacheIOThread::WRITE);
|
|
}
|
|
|
|
} // namespace net
|
|
} // namespace mozilla
|