gecko-dev/dom/quota/QuotaManager.h
Luke Wagner 5ed834b091 Bug 929236 - Cache asm.js compiled code in Gecko (r=janv)
--HG--
extra : rebase_source : 1c97962da0044858c583fc45e69dd22e519b8066
2013-11-18 15:49:53 -06:00

530 lines
15 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef mozilla_dom_quota_quotamanager_h__
#define mozilla_dom_quota_quotamanager_h__
#include "QuotaCommon.h"
#include "nsIObserver.h"
#include "nsIQuotaManager.h"
#include "mozilla/dom/Nullable.h"
#include "mozilla/Mutex.h"
#include "nsClassHashtable.h"
#include "nsRefPtrHashtable.h"
#include "ArrayCluster.h"
#include "Client.h"
#include "PersistenceType.h"
#include "StoragePrivilege.h"
#define QUOTA_MANAGER_CONTRACTID "@mozilla.org/dom/quota/manager;1"
class nsIOfflineStorage;
class nsIPrincipal;
class nsIThread;
class nsITimer;
class nsIURI;
class nsPIDOMWindow;
class nsIRunnable;
BEGIN_QUOTA_NAMESPACE
class AcquireListener;
class AsyncUsageRunnable;
class CheckQuotaHelper;
class CollectOriginsHelper;
class FinalizeOriginEvictionRunnable;
class GroupInfo;
class GroupInfoPair;
class OriginClearRunnable;
class OriginInfo;
class OriginOrPatternString;
class QuotaObject;
class ResetOrClearRunnable;
struct SynchronizedOp;
class QuotaManager MOZ_FINAL : public nsIQuotaManager,
public nsIObserver
{
friend class AsyncUsageRunnable;
friend class CollectOriginsHelper;
friend class FinalizeOriginEvictionRunnable;
friend class GroupInfo;
friend class OriginClearRunnable;
friend class OriginInfo;
friend class QuotaObject;
friend class ResetOrClearRunnable;
enum MozBrowserPatternFlag
{
MozBrowser = 0,
NotMozBrowser,
IgnoreMozBrowser
};
typedef void
(*WaitingOnStoragesCallback)(nsTArray<nsCOMPtr<nsIOfflineStorage> >&, void*);
public:
NS_DECL_ISUPPORTS
NS_DECL_NSIQUOTAMANAGER
NS_DECL_NSIOBSERVER
// Returns a non-owning reference.
static QuotaManager*
GetOrCreate();
// Returns a non-owning reference.
static QuotaManager*
Get();
// Returns an owning reference! No one should call this but the factory.
static QuotaManager*
FactoryCreate();
// Returns true if we've begun the shutdown process.
static bool IsShuttingDown();
void
InitQuotaForOrigin(PersistenceType aPersistenceType,
const nsACString& aGroup,
const nsACString& aOrigin,
uint64_t aLimitBytes,
uint64_t aUsageBytes,
int64_t aAccessTime);
void
DecreaseUsageForOrigin(PersistenceType aPersistenceType,
const nsACString& aGroup,
const nsACString& aOrigin,
int64_t aSize);
void
UpdateOriginAccessTime(PersistenceType aPersistenceType,
const nsACString& aGroup,
const nsACString& aOrigin);
void
RemoveQuota();
void
RemoveQuotaForPersistenceType(PersistenceType);
void
RemoveQuotaForOrigin(PersistenceType aPersistenceType,
const nsACString& aGroup,
const nsACString& aOrigin)
{
MutexAutoLock lock(mQuotaMutex);
LockedRemoveQuotaForOrigin(aPersistenceType, aGroup, aOrigin);
}
void
RemoveQuotaForPattern(PersistenceType aPersistenceType,
const nsACString& aPattern);
already_AddRefed<QuotaObject>
GetQuotaObject(PersistenceType aPersistenceType,
const nsACString& aGroup,
const nsACString& aOrigin,
nsIFile* aFile);
already_AddRefed<QuotaObject>
GetQuotaObject(PersistenceType aPersistenceType,
const nsACString& aGroup,
const nsACString& aOrigin,
const nsAString& aPath);
// Set the Window that the current thread is doing operations for.
// The caller is responsible for ensuring that aWindow is held alive.
static void
SetCurrentWindow(nsPIDOMWindow* aWindow)
{
QuotaManager* quotaManager = Get();
NS_ASSERTION(quotaManager, "Must have a manager here!");
quotaManager->SetCurrentWindowInternal(aWindow);
}
static void
CancelPromptsForWindow(nsPIDOMWindow* aWindow)
{
NS_ASSERTION(aWindow, "Passed null window!");
QuotaManager* quotaManager = Get();
NS_ASSERTION(quotaManager, "Must have a manager here!");
quotaManager->CancelPromptsForWindowInternal(aWindow);
}
// Called when a storage is created.
bool
RegisterStorage(nsIOfflineStorage* aStorage);
// Called when a storage is being unlinked or destroyed.
void
UnregisterStorage(nsIOfflineStorage* aStorage);
// Called when a storage has been closed.
void
OnStorageClosed(nsIOfflineStorage* aStorage);
// Called when a window is being purged from the bfcache or the user leaves
// a page which isn't going into the bfcache. Forces any live storage
// objects to close themselves and aborts any running transactions.
void
AbortCloseStoragesForWindow(nsPIDOMWindow* aWindow);
// Used to check if there are running transactions in a given window.
bool
HasOpenTransactions(nsPIDOMWindow* aWindow);
// Waits for storages to be cleared and for version change transactions to
// complete before dispatching the given runnable.
nsresult
WaitForOpenAllowed(const OriginOrPatternString& aOriginOrPattern,
Nullable<PersistenceType> aPersistenceType,
const nsACString& aId, nsIRunnable* aRunnable);
// Acquire exclusive access to the storage given (waits for all others to
// close). If storages need to close first, the callback will be invoked
// with an array of said storages.
nsresult
AcquireExclusiveAccess(nsIOfflineStorage* aStorage,
const nsACString& aOrigin,
AcquireListener* aListener,
WaitingOnStoragesCallback aCallback,
void* aClosure)
{
NS_ASSERTION(aStorage, "Need a storage here!");
return AcquireExclusiveAccess(aOrigin, aStorage, aListener, aCallback,
aClosure);
}
nsresult
AcquireExclusiveAccess(const nsACString& aOrigin,
AcquireListener* aListener,
WaitingOnStoragesCallback aCallback,
void* aClosure)
{
return AcquireExclusiveAccess(aOrigin, nullptr, aListener, aCallback,
aClosure);
}
void
AllowNextSynchronizedOp(const OriginOrPatternString& aOriginOrPattern,
Nullable<PersistenceType> aPersistenceType,
const nsACString& aId);
bool
IsClearOriginPending(const nsACString& aPattern)
{
return !!FindSynchronizedOp(aPattern, Nullable<PersistenceType>(),
EmptyCString());
}
nsresult
GetDirectoryForOrigin(PersistenceType aPersistenceType,
const nsACString& aASCIIOrigin,
nsIFile** aDirectory) const;
nsresult
EnsureOriginIsInitialized(PersistenceType aPersistenceType,
const nsACString& aGroup,
const nsACString& aOrigin,
bool aTrackQuota,
nsIFile** aDirectory);
void
OriginClearCompleted(PersistenceType aPersistenceType,
const OriginOrPatternString& aOriginOrPattern);
void
ResetOrClearCompleted();
void
AssertCurrentThreadOwnsQuotaMutex()
{
mQuotaMutex.AssertCurrentThreadOwns();
}
nsIThread*
IOThread()
{
NS_ASSERTION(mIOThread, "This should never be null!");
return mIOThread;
}
already_AddRefed<Client>
GetClient(Client::Type aClientType);
const nsString&
GetStoragePath(PersistenceType aPersistenceType) const
{
if (aPersistenceType == PERSISTENCE_TYPE_PERSISTENT) {
return mPersistentStoragePath;
}
NS_ASSERTION(aPersistenceType == PERSISTENCE_TYPE_TEMPORARY, "Huh?");
return mTemporaryStoragePath;
}
uint64_t
GetGroupLimit() const
{
return mTemporaryStorageLimit / 5;
}
static uint32_t
GetStorageQuotaMB();
static void
GetStorageId(PersistenceType aPersistenceType,
const nsACString& aOrigin,
Client::Type aClientType,
const nsAString& aName,
nsACString& aDatabaseId);
static nsresult
GetInfoFromURI(nsIURI* aURI,
uint32_t aAppId,
bool aInMozBrowser,
nsACString* aGroup,
nsACString* aASCIIOrigin,
StoragePrivilege* aPrivilege,
PersistenceType* aDefaultPersistenceType);
static nsresult
GetInfoFromPrincipal(nsIPrincipal* aPrincipal,
nsACString* aGroup,
nsACString* aASCIIOrigin,
StoragePrivilege* aPrivilege,
PersistenceType* aDefaultPersistenceType);
static nsresult
GetInfoFromWindow(nsPIDOMWindow* aWindow,
nsACString* aGroup,
nsACString* aASCIIOrigin,
StoragePrivilege* aPrivilege,
PersistenceType* aDefaultPersistenceType);
static void
GetInfoForChrome(nsACString* aGroup,
nsACString* aASCIIOrigin,
StoragePrivilege* aPrivilege,
PersistenceType* aDefaultPersistenceType);
static void
GetOriginPatternString(uint32_t aAppId, bool aBrowserOnly,
const nsACString& aOrigin, nsAutoCString& _retval)
{
return GetOriginPatternString(aAppId,
aBrowserOnly ? MozBrowser : NotMozBrowser,
aOrigin, _retval);
}
static void
GetOriginPatternStringMaybeIgnoreBrowser(uint32_t aAppId, bool aBrowserOnly,
nsAutoCString& _retval)
{
return GetOriginPatternString(aAppId,
aBrowserOnly ? MozBrowser : IgnoreMozBrowser,
EmptyCString(), _retval);
}
private:
QuotaManager();
virtual ~QuotaManager();
nsresult
Init();
void
SetCurrentWindowInternal(nsPIDOMWindow* aWindow);
void
CancelPromptsForWindowInternal(nsPIDOMWindow* aWindow);
// Determine if the quota is lifted for the Window the current thread is
// using.
bool
LockedQuotaIsLifted();
uint64_t
LockedCollectOriginsForEviction(uint64_t aMinSizeToBeFreed,
nsTArray<OriginInfo*>& aOriginInfos);
void
LockedRemoveQuotaForOrigin(PersistenceType aPersistenceType,
const nsACString& aGroup,
const nsACString& aOrigin);
nsresult
AcquireExclusiveAccess(const nsACString& aOrigin,
nsIOfflineStorage* aStorage,
AcquireListener* aListener,
WaitingOnStoragesCallback aCallback,
void* aClosure);
void
AddSynchronizedOp(const OriginOrPatternString& aOriginOrPattern,
Nullable<PersistenceType> aPersistenceType);
nsresult
RunSynchronizedOp(nsIOfflineStorage* aStorage,
SynchronizedOp* aOp);
SynchronizedOp*
FindSynchronizedOp(const nsACString& aPattern,
Nullable<PersistenceType> aPersistenceType,
const nsACString& aId);
nsresult
MaybeUpgradeIndexedDBDirectory();
nsresult
InitializeOrigin(PersistenceType aPersistenceType,
const nsACString& aGroup,
const nsACString& aOrigin,
bool aTrackQuota,
int64_t aAccessTime,
nsIFile* aDirectory);
nsresult
ClearStoragesForApp(uint32_t aAppId, bool aBrowserOnly);
void
CheckTemporaryStorageLimits();
// Collect inactive and the least recently used origins.
uint64_t
CollectOriginsForEviction(uint64_t aMinSizeToBeFreed,
nsTArray<OriginInfo*>& aOriginInfos);
void
DeleteTemporaryFilesForOrigin(const nsACString& aOrigin);
void
FinalizeOriginEviction(nsTArray<nsCString>& aOrigins);
void
SaveOriginAccessTime(const nsACString& aOrigin, int64_t aTimestamp);
void
ReleaseIOThreadObjects()
{
AssertIsOnIOThread();
for (uint32_t index = 0; index < Client::TYPE_MAX; index++) {
mClients[index]->ReleaseIOThreadObjects();
}
}
static void
GetOriginPatternString(uint32_t aAppId,
MozBrowserPatternFlag aBrowserFlag,
const nsACString& aOrigin,
nsAutoCString& _retval);
static PLDHashOperator
RemoveQuotaForPersistenceTypeCallback(const nsACString& aKey,
nsAutoPtr<GroupInfoPair>& aValue,
void* aUserArg);
static PLDHashOperator
RemoveQuotaCallback(const nsACString& aKey,
nsAutoPtr<GroupInfoPair>& aValue,
void* aUserArg);
static PLDHashOperator
RemoveQuotaForPatternCallback(const nsACString& aKey,
nsAutoPtr<GroupInfoPair>& aValue,
void* aUserArg);
static PLDHashOperator
GetOriginsExceedingGroupLimit(const nsACString& aKey,
GroupInfoPair* aValue,
void* aUserArg);
static PLDHashOperator
GetAllTemporaryStorageOrigins(const nsACString& aKey,
GroupInfoPair* aValue,
void* aUserArg);
static PLDHashOperator
AddTemporaryStorageOrigins(const nsACString& aKey,
ArrayCluster<nsIOfflineStorage*>* aValue,
void* aUserArg);
static PLDHashOperator
GetInactiveTemporaryStorageOrigins(const nsACString& aKey,
GroupInfoPair* aValue,
void* aUserArg);
// TLS storage index for the current thread's window.
unsigned int mCurrentWindowIndex;
mozilla::Mutex mQuotaMutex;
nsClassHashtable<nsCStringHashKey, GroupInfoPair> mGroupInfoPairs;
// A map of Windows to the corresponding quota helper.
nsRefPtrHashtable<nsPtrHashKey<nsPIDOMWindow>,
CheckQuotaHelper> mCheckQuotaHelpers;
// Maintains a list of live storages per origin.
nsClassHashtable<nsCStringHashKey,
ArrayCluster<nsIOfflineStorage*> > mLiveStorages;
// Maintains a list of synchronized operatons that are in progress or queued.
nsAutoTArray<nsAutoPtr<SynchronizedOp>, 5> mSynchronizedOps;
// Thread on which IO is performed.
nsCOMPtr<nsIThread> mIOThread;
// A timer that gets activated at shutdown to ensure we close all storages.
nsCOMPtr<nsITimer> mShutdownTimer;
// A list of all successfully initialized origins. This list isn't protected
// by any mutex but it is only ever touched on the IO thread.
nsTArray<nsCString> mInitializedOrigins;
nsAutoTArray<nsRefPtr<Client>, Client::TYPE_MAX> mClients;
nsString mIndexedDBPath;
nsString mPersistentStoragePath;
nsString mTemporaryStoragePath;
uint64_t mTemporaryStorageLimit;
uint64_t mTemporaryStorageUsage;
bool mTemporaryStorageInitialized;
bool mStorageAreaInitialized;
};
class AutoEnterWindow
{
public:
AutoEnterWindow(nsPIDOMWindow* aWindow)
{
QuotaManager::SetCurrentWindow(aWindow);
}
~AutoEnterWindow()
{
QuotaManager::SetCurrentWindow(nullptr);
}
};
END_QUOTA_NAMESPACE
#endif /* mozilla_dom_quota_quotamanager_h__ */