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Issue #1263 - Part 1: Remove DiskSpaceWatcher

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This commit is contained in:
wolfbeast 2019-11-08 10:49:03 +01:00 • committed by Roy Tam
commit 92b01bf08a
20 changed files with 3 additions and 537 deletions
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56
dom/indexedDB/ActorsParent.cpp
View file

@ -4427,18 +4427,6 @@ CreateStorageConnection(nsIFile* aDBFile,
nsresult rv;
bool exists;
if (IndexedDatabaseManager::InLowDiskSpaceMode()) {
rv = aDBFile->Exists(&exists);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
if (!exists) {
NS_WARNING("Refusing to create database because disk space is low!");
return NS_ERROR_DOM_INDEXEDDB_QUOTA_ERR;
}
}
nsCOMPtr<nsIFileURL> dbFileUrl;
rv = GetDatabaseFileURL(aDBFile,
aPersistenceType,
@ -19103,23 +19091,6 @@ DatabaseMaintenance::DetermineMaintenanceAction(
return NS_OK;
}
bool lowDiskSpace = IndexedDatabaseManager::InLowDiskSpaceMode();
if (QuotaManager::IsRunningXPCShellTests()) {
// If we're running XPCShell then we want to test both the low disk space
// and normal disk space code paths so pick semi-randomly based on the
// current time.
lowDiskSpace = ((PR_Now() / PR_USEC_PER_MSEC) % 2) == 0;
}
// If we're low on disk space then the best we can hope for is that an
// incremental vacuum might free some space. That is a journaled operation so
// it may not be possible even then.
if (lowDiskSpace) {
*aMaintenanceAction = MaintenanceAction::IncrementalVacuum;
return NS_OK;
}
// This method shouldn't make any permanent changes to the database, so make
// sure everything gets rolled back when we leave.
mozStorageTransaction transaction(aConnection,
@ -24233,11 +24204,6 @@ CreateFileOp::DoDatabaseWork()
"CreateFileOp::DoDatabaseWork",
js::ProfileEntry::Category::STORAGE);
if (NS_WARN_IF(IndexedDatabaseManager::InLowDiskSpaceMode())) {
NS_WARNING("Refusing to create file because disk space is low!");
return NS_ERROR_DOM_INDEXEDDB_QUOTA_ERR;
}
if (NS_WARN_IF(QuotaManager::IsShuttingDown()) || !OperationMayProceed()) {
IDB_REPORT_INTERNAL_ERR();
return NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR;
@ -24378,10 +24344,6 @@ CreateObjectStoreOp::DoDatabaseWork(DatabaseConnection* aConnection)
"CreateObjectStoreOp::DoDatabaseWork",
js::ProfileEntry::Category::STORAGE);
if (NS_WARN_IF(IndexedDatabaseManager::InLowDiskSpaceMode())) {
return NS_ERROR_DOM_INDEXEDDB_QUOTA_ERR;
}
#ifdef DEBUG
{
// Make sure that we're not creating an object store with the same name as
@ -24705,10 +24667,6 @@ RenameObjectStoreOp::DoDatabaseWork(DatabaseConnection* aConnection)
"RenameObjectStoreOp::DoDatabaseWork",
js::ProfileEntry::Category::STORAGE);
if (NS_WARN_IF(IndexedDatabaseManager::InLowDiskSpaceMode())) {
return NS_ERROR_DOM_INDEXEDDB_QUOTA_ERR;
}
#ifdef DEBUG
{
// Make sure that we're not renaming an object store with the same name as
@ -24798,7 +24756,6 @@ CreateIndexOp::InsertDataFromObjectStore(DatabaseConnection* aConnection)
{
MOZ_ASSERT(aConnection);
aConnection->AssertIsOnConnectionThread();
MOZ_ASSERT(!IndexedDatabaseManager::InLowDiskSpaceMode());
MOZ_ASSERT(mMaybeUniqueIndexTable);
PROFILER_LABEL("IndexedDB",
@ -24849,7 +24806,6 @@ CreateIndexOp::InsertDataFromObjectStoreInternal(
{
MOZ_ASSERT(aConnection);
aConnection->AssertIsOnConnectionThread();
MOZ_ASSERT(!IndexedDatabaseManager::InLowDiskSpaceMode());
MOZ_ASSERT(mMaybeUniqueIndexTable);
DebugOnly<void*> storageConnection = aConnection->GetStorageConnection();
@ -24926,10 +24882,6 @@ CreateIndexOp::DoDatabaseWork(DatabaseConnection* aConnection)
"CreateIndexOp::DoDatabaseWork",
js::ProfileEntry::Category::STORAGE);
if (NS_WARN_IF(IndexedDatabaseManager::InLowDiskSpaceMode())) {
return NS_ERROR_DOM_INDEXEDDB_QUOTA_ERR;
}
#ifdef DEBUG
{
// Make sure that we're not creating an index with the same name and object
@ -25806,10 +25758,6 @@ RenameIndexOp::DoDatabaseWork(DatabaseConnection* aConnection)
"RenameIndexOp::DoDatabaseWork",
js::ProfileEntry::Category::STORAGE);
if (NS_WARN_IF(IndexedDatabaseManager::InLowDiskSpaceMode())) {
return NS_ERROR_DOM_INDEXEDDB_QUOTA_ERR;
}
#ifdef DEBUG
{
// Make sure that we're not renaming an index with the same name as another
@ -26294,10 +26242,6 @@ ObjectStoreAddOrPutRequestOp::DoDatabaseWork(DatabaseConnection* aConnection)
"ObjectStoreAddOrPutRequestOp::DoDatabaseWork",
js::ProfileEntry::Category::STORAGE);
if (NS_WARN_IF(IndexedDatabaseManager::InLowDiskSpaceMode())) {
return NS_ERROR_DOM_INDEXEDDB_QUOTA_ERR;
}
DatabaseConnection::AutoSavepoint autoSave;
nsresult rv = autoSave.Start(Transaction());
if (NS_WARN_IF(NS_FAILED(rv))) {

75
dom/indexedDB/IndexedDatabaseManager.cpp
View file

@ -8,11 +8,9 @@
#include "chrome/common/ipc_channel.h" // for IPC::Channel::kMaximumMessageSize
#include "nsIConsoleService.h"
#include "nsIDiskSpaceWatcher.h"
#include "nsIDOMWindow.h"
#include "nsIEventTarget.h"
#include "nsIFile.h"
#include "nsIObserverService.h"
#include "nsIScriptError.h"
#include "nsIScriptGlobalObject.h"
@ -64,11 +62,6 @@
#define IDB_STR "indexedDB"
// The two possible values for the data argument when receiving the disk space
// observer notification.
#define LOW_DISK_SPACE_DATA_FULL "full"
#define LOW_DISK_SPACE_DATA_FREE "free"
namespace mozilla {
namespace dom {
namespace indexedDB {
@ -313,8 +306,6 @@ Atomic<IndexedDatabaseManager::LoggingMode>
IndexedDatabaseManager::sLoggingMode(
IndexedDatabaseManager::Logging_Disabled);
mozilla::Atomic<bool> IndexedDatabaseManager::sLowDiskSpaceMode(false);
// static
IndexedDatabaseManager*
IndexedDatabaseManager::GetOrCreate()
@ -329,24 +320,6 @@ IndexedDatabaseManager::GetOrCreate()
if (!gDBManager) {
sIsMainProcess = XRE_IsParentProcess();
if (sIsMainProcess && Preferences::GetBool("disk_space_watcher.enabled", false)) {
// See if we're starting up in low disk space conditions.
nsCOMPtr<nsIDiskSpaceWatcher> watcher =
do_GetService(DISKSPACEWATCHER_CONTRACTID);
if (watcher) {
bool isDiskFull;
if (NS_SUCCEEDED(watcher->GetIsDiskFull(&isDiskFull))) {
sLowDiskSpaceMode = isDiskFull;
}
else {
NS_WARNING("GetIsDiskFull failed!");
}
}
else {
NS_WARNING("No disk space watcher component available!");
}
}
RefPtr<IndexedDatabaseManager> instance(new IndexedDatabaseManager());
nsresult rv = instance->Init();
@ -380,13 +353,6 @@ IndexedDatabaseManager::Init()
// During Init() we can't yet call IsMainProcess(), just check sIsMainProcess
// directly.
if (sIsMainProcess) {
nsCOMPtr<nsIObserverService> obs = mozilla::services::GetObserverService();
NS_ENSURE_STATE(obs);
nsresult rv =
obs->AddObserver(this, DISKSPACEWATCHER_OBSERVER_TOPIC, false);
NS_ENSURE_SUCCESS(rv, rv);
mDeleteTimer = do_CreateInstance(NS_TIMER_CONTRACTID);
NS_ENSURE_STATE(mDeleteTimer);
@ -680,16 +646,6 @@ IndexedDatabaseManager::IsMainProcess()
return sIsMainProcess;
}
//static
bool
IndexedDatabaseManager::InLowDiskSpaceMode()
{
NS_ASSERTION(gDBManager,
"InLowDiskSpaceMode() called before indexedDB has been "
"initialized!");
return sLowDiskSpaceMode;
}
// static
IndexedDatabaseManager::LoggingMode
IndexedDatabaseManager::GetLoggingMode()
@ -1087,36 +1043,7 @@ IndexedDatabaseManager::GetLocale()
NS_IMPL_ADDREF(IndexedDatabaseManager)
NS_IMPL_RELEASE_WITH_DESTROY(IndexedDatabaseManager, Destroy())
NS_IMPL_QUERY_INTERFACE(IndexedDatabaseManager, nsIObserver, nsITimerCallback)
NS_IMETHODIMP
IndexedDatabaseManager::Observe(nsISupports* aSubject, const char* aTopic,
const char16_t* aData)
{
NS_ASSERTION(IsMainProcess(), "Wrong process!");
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
if (!strcmp(aTopic, DISKSPACEWATCHER_OBSERVER_TOPIC)) {
NS_ASSERTION(aData, "No data?!");
const nsDependentString data(aData);
if (data.EqualsLiteral(LOW_DISK_SPACE_DATA_FULL)) {
sLowDiskSpaceMode = true;
}
else if (data.EqualsLiteral(LOW_DISK_SPACE_DATA_FREE)) {
sLowDiskSpaceMode = false;
}
else {
NS_NOTREACHED("Unknown data value!");
}
return NS_OK;
}
NS_NOTREACHED("Unknown topic!");
return NS_ERROR_UNEXPECTED;
}
NS_IMPL_QUERY_INTERFACE(IndexedDatabaseManager, nsITimerCallback)
NS_IMETHODIMP
IndexedDatabaseManager::Notify(nsITimer* aTimer)

17
dom/indexedDB/IndexedDatabaseManager.h
View file

@ -7,8 +7,6 @@
#ifndef mozilla_dom_indexeddatabasemanager_h__
#define mozilla_dom_indexeddatabasemanager_h__
#include "nsIObserver.h"
#include "js/TypeDecls.h"
#include "mozilla/Atomics.h"
#include "mozilla/dom/quota/PersistenceType.h"
@ -43,8 +41,7 @@ class FileManagerInfo;
} // namespace indexedDB
class IndexedDatabaseManager final
: public nsIObserver
, public nsITimerCallback
: public nsITimerCallback
{
typedef mozilla::dom::quota::PersistenceType PersistenceType;
typedef mozilla::dom::quota::QuotaManager QuotaManager;
@ -62,7 +59,6 @@ public:
};
NS_DECL_ISUPPORTS
NS_DECL_NSIOBSERVER
NS_DECL_NSITIMERCALLBACK
// Returns a non-owning reference.
@ -86,16 +82,6 @@ public:
}
#endif
static bool
InLowDiskSpaceMode()
#ifdef DEBUG
;
#else
{
return !!sLowDiskSpaceMode;
}
#endif
static bool
InTestingMode();
@ -244,7 +230,6 @@ private:
static bool sFullSynchronousMode;
static LazyLogModule sLoggingModule;
static Atomic<LoggingMode> sLoggingMode;
static mozilla::Atomic<bool> sLowDiskSpaceMode;
};
} // namespace dom

5
dom/storage/DOMStorageCache.cpp
View file

@ -205,11 +205,6 @@ DOMStorageCache::ProcessUsageDelta(const DOMStorage* aStorage, int64_t aDelta)
bool
DOMStorageCache::ProcessUsageDelta(uint32_t aGetDataSetIndex, const int64_t aDelta)
{
// Check if we are in a low disk space situation
if (aDelta > 0 && mManager && mManager->IsLowDiskSpace()) {
return false;
}
// Check limit per this origin
Data& data = mData[aGetDataSetIndex];
uint64_t newOriginUsage = data.mOriginQuotaUsage + aDelta;

17
dom/storage/DOMStorageIPC.cpp
View file

@ -11,7 +11,6 @@
#include "mozilla/dom/ContentChild.h"
#include "mozilla/dom/ContentParent.h"
#include "mozilla/Unused.h"
#include "nsIDiskSpaceWatcher.h"
#include "nsThreadUtils.h"
namespace mozilla {
@ -321,22 +320,6 @@ private:
mozilla::Unused << mParent->SendOriginsHavingData(scopes);
}
// We need to check if the device is in a low disk space situation, so
// we can forbid in that case any write in localStorage.
nsCOMPtr<nsIDiskSpaceWatcher> diskSpaceWatcher =
do_GetService("@mozilla.org/toolkit/disk-space-watcher;1");
if (!diskSpaceWatcher) {
return NS_OK;
}
bool lowDiskSpace = false;
diskSpaceWatcher->GetIsDiskFull(&lowDiskSpace);
if (lowDiskSpace) {
mozilla::Unused << mParent->SendObserve(
nsDependentCString("low-disk-space"), EmptyString(), EmptyCString());
}
return NS_OK;
}

17
dom/storage/DOMStorageManager.cpp
View file

@ -103,7 +103,6 @@ NS_IMPL_ISUPPORTS(DOMStorageManager,
DOMStorageManager::DOMStorageManager(DOMStorage::StorageType aType)
: mCaches(8)
, mType(aType)
, mLowDiskSpace(false)
{
DOMStorageObserver* observer = DOMStorageObserver::Self();
NS_ASSERTION(observer, "No DOMStorageObserver, cannot observe private data delete notifications!");
@ -566,22 +565,6 @@ DOMStorageManager::Observe(const char* aTopic,
return NS_OK;
}
if (!strcmp(aTopic, "low-disk-space")) {
if (mType == LocalStorage) {
mLowDiskSpace = true;
}
return NS_OK;
}
if (!strcmp(aTopic, "no-low-disk-space")) {
if (mType == LocalStorage) {
mLowDiskSpace = false;
}
return NS_OK;
}
#ifdef DOM_STORAGE_TESTS
if (!strcmp(aTopic, "test-reload")) {
if (mType != LocalStorage) {

6
dom/storage/DOMStorageManager.h
View file

@ -102,12 +102,6 @@ private:
const DOMStorage::StorageType mType;
// If mLowDiskSpace is true it indicates a low device storage situation and
// so no localStorage writes are allowed. sessionStorage writes are still
// allowed.
bool mLowDiskSpace;
bool IsLowDiskSpace() const { return mLowDiskSpace; };
void ClearCaches(uint32_t aUnloadFlags,
const OriginAttributesPattern& aPattern,
const nsACString& aKeyPrefix);

13
dom/storage/DOMStorageObserver.cpp
View file

@ -70,9 +70,6 @@ DOMStorageObserver::Init()
obs->AddObserver(sSelf, "profile-before-change", true);
obs->AddObserver(sSelf, "xpcom-shutdown", true);
// Observe low device storage notifications.
obs->AddObserver(sSelf, "disk-space-watcher", true);
#ifdef DOM_STORAGE_TESTS
// Testing
obs->AddObserver(sSelf, "domstorage-test-flush-force", true);
@ -313,16 +310,6 @@ DOMStorageObserver::Observe(nsISupports* aSubject,
return NS_OK;
}
if (!strcmp(aTopic, "disk-space-watcher")) {
if (NS_LITERAL_STRING("full").Equals(aData)) {
Notify("low-disk-space");
} else if (NS_LITERAL_STRING("free").Equals(aData)) {
Notify("no-low-disk-space");
}
return NS_OK;
}
#ifdef DOM_STORAGE_TESTS
if (!strcmp(aTopic, "domstorage-test-flush-force")) {
DOMStorageDBBridge* db = DOMStorageCache::GetDatabase();

16
hal/Hal.cpp
View file

@ -855,22 +855,6 @@ void FactoryReset(mozilla::dom::FactoryResetReason& aReason)
PROXY_IF_SANDBOXED(FactoryReset(aReason));
}
void
StartDiskSpaceWatcher()
{
AssertMainProcess();
AssertMainThread();
PROXY_IF_SANDBOXED(StartDiskSpaceWatcher());
}
void
StopDiskSpaceWatcher()
{
AssertMainProcess();
AssertMainThread();
PROXY_IF_SANDBOXED(StopDiskSpaceWatcher());
}
uint32_t
GetTotalSystemMemory()
{

14
hal/Hal.h
View file

@ -476,20 +476,6 @@ void StartForceQuitWatchdog(hal::ShutdownMode aMode, int32_t aTimeoutSecs);
*/
void FactoryReset(mozilla::dom::FactoryResetReason& aReason);
/**
* Start monitoring disk space for low space situations.
*
* This API is currently only allowed to be used from the main process.
*/
void StartDiskSpaceWatcher();
/**
* Stop monitoring disk space for low space situations.
*
* This API is currently only allowed to be used from the main process.
*/
void StopDiskSpaceWatcher();
/**
* Get total system memory of device being run on in bytes.
*

19
hal/fallback/FallbackDiskSpaceWatcher.cpp
View file

@ -1,19 +0,0 @@
/* 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/. */
namespace mozilla {
namespace hal_impl {
void
StartDiskSpaceWatcher()
{
}
void
StopDiskSpaceWatcher()
{
}
} // namespace hal_impl
} // namespace mozilla

1
hal/moz.build
View file

@ -107,7 +107,6 @@ else:
]
UNIFIED_SOURCES += [
'fallback/FallbackDiskSpaceWatcher.cpp',
'fallback/FallbackFactoryReset.cpp',
'fallback/FallbackProcessPriority.cpp',
'fallback/FallbackScreenPower.cpp',

12
hal/sandbox/SandboxHal.cpp
View file

@ -352,18 +352,6 @@ FactoryReset(FactoryResetReason& aReason)
}
}
void
StartDiskSpaceWatcher()
{
NS_RUNTIMEABORT("StartDiskSpaceWatcher() can't be called from sandboxed contexts.");
}
void
StopDiskSpaceWatcher()
{
NS_RUNTIMEABORT("StopDiskSpaceWatcher() can't be called from sandboxed contexts.");
}
bool IsHeadphoneEventFromInputDev()
{
NS_RUNTIMEABORT("IsHeadphoneEventFromInputDev() cannot be called from sandboxed contexts.");

158
toolkit/components/diskspacewatcher/DiskSpaceWatcher.cpp
View file

@ -1,158 +0,0 @@
/* 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/. */
#include "DiskSpaceWatcher.h"
#include "nsIObserverService.h"
#include "nsXULAppAPI.h"
#include "mozilla/Hal.h"
#include "mozilla/ModuleUtils.h"
#include "mozilla/Preferences.h"
#include "mozilla/ClearOnShutdown.h"
#include "mozilla/Services.h"
#define NS_DISKSPACEWATCHER_CID \
{ 0xab218518, 0xf197, 0x4fb4, { 0x8b, 0x0f, 0x8b, 0xb3, 0x4d, 0xf2, 0x4b, 0xf4 } }
using namespace mozilla;
StaticRefPtr<DiskSpaceWatcher> gDiskSpaceWatcher;
NS_IMPL_ISUPPORTS(DiskSpaceWatcher, nsIDiskSpaceWatcher, nsIObserver)
uint64_t DiskSpaceWatcher::sFreeSpace = 0;
bool DiskSpaceWatcher::sIsDiskFull = false;
DiskSpaceWatcher::DiskSpaceWatcher()
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(!gDiskSpaceWatcher);
}
DiskSpaceWatcher::~DiskSpaceWatcher()
{
MOZ_ASSERT(!gDiskSpaceWatcher);
}
already_AddRefed<DiskSpaceWatcher>
DiskSpaceWatcher::FactoryCreate()
{
if (!XRE_IsParentProcess()) {
return nullptr;
}
MOZ_ASSERT(NS_IsMainThread());
if (!Preferences::GetBool("disk_space_watcher.enabled", false)) {
return nullptr;
}
if (!gDiskSpaceWatcher) {
gDiskSpaceWatcher = new DiskSpaceWatcher();
ClearOnShutdown(&gDiskSpaceWatcher);
}
RefPtr<DiskSpaceWatcher> service = gDiskSpaceWatcher.get();
return service.forget();
}
NS_IMETHODIMP
DiskSpaceWatcher::Observe(nsISupports* aSubject, const char* aTopic,
const char16_t* aData)
{
MOZ_ASSERT(NS_IsMainThread());
if (!strcmp(aTopic, "profile-after-change")) {
nsCOMPtr<nsIObserverService> observerService =
mozilla::services::GetObserverService();
observerService->AddObserver(this, "profile-before-change", false);
mozilla::hal::StartDiskSpaceWatcher();
return NS_OK;
}
if (!strcmp(aTopic, "profile-before-change")) {
nsCOMPtr<nsIObserverService> observerService =
mozilla::services::GetObserverService();
observerService->RemoveObserver(this, "profile-before-change");
mozilla::hal::StopDiskSpaceWatcher();
return NS_OK;
}
MOZ_ASSERT(false, "DiskSpaceWatcher got unexpected topic!");
return NS_ERROR_UNEXPECTED;
}
NS_IMETHODIMP DiskSpaceWatcher::GetIsDiskFull(bool* aIsDiskFull)
{
*aIsDiskFull = sIsDiskFull;
return NS_OK;
}
// GetFreeSpace is a macro on windows, and that messes up with the c++
// compiler.
#ifdef XP_WIN
#undef GetFreeSpace
#endif
NS_IMETHODIMP DiskSpaceWatcher::GetFreeSpace(uint64_t* aFreeSpace)
{
*aFreeSpace = sFreeSpace;
return NS_OK;
}
// static
void DiskSpaceWatcher::UpdateState(bool aIsDiskFull, uint64_t aFreeSpace)
{
MOZ_ASSERT(NS_IsMainThread());
if (!gDiskSpaceWatcher) {
return;
}
nsCOMPtr<nsIObserverService> observerService =
mozilla::services::GetObserverService();
sIsDiskFull = aIsDiskFull;
sFreeSpace = aFreeSpace;
if (!observerService) {
return;
}
const char16_t stateFull[] = { 'f', 'u', 'l', 'l', 0 };
const char16_t stateFree[] = { 'f', 'r', 'e', 'e', 0 };
nsCOMPtr<nsISupports> subject;
CallQueryInterface(gDiskSpaceWatcher.get(), getter_AddRefs(subject));
MOZ_ASSERT(subject);
observerService->NotifyObservers(subject,
DISKSPACEWATCHER_OBSERVER_TOPIC,
sIsDiskFull ? stateFull : stateFree);
return;
}
NS_GENERIC_FACTORY_SINGLETON_CONSTRUCTOR(DiskSpaceWatcher,
DiskSpaceWatcher::FactoryCreate)
NS_DEFINE_NAMED_CID(NS_DISKSPACEWATCHER_CID);
static const mozilla::Module::CIDEntry kDiskSpaceWatcherCIDs[] = {
{ &kNS_DISKSPACEWATCHER_CID, false, nullptr, DiskSpaceWatcherConstructor },
{ nullptr }
};
static const mozilla::Module::ContractIDEntry kDiskSpaceWatcherContracts[] = {
{ "@mozilla.org/toolkit/disk-space-watcher;1", &kNS_DISKSPACEWATCHER_CID },
{ nullptr }
};
static const mozilla::Module::CategoryEntry kDiskSpaceWatcherCategories[] = {
{ nullptr }
};
static const mozilla::Module kDiskSpaceWatcherModule = {
mozilla::Module::kVersion,
kDiskSpaceWatcherCIDs,
kDiskSpaceWatcherContracts,
kDiskSpaceWatcherCategories
};
NSMODULE_DEFN(DiskSpaceWatcherModule) = &kDiskSpaceWatcherModule;

32
toolkit/components/diskspacewatcher/DiskSpaceWatcher.h
View file

@ -1,32 +0,0 @@
/* 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 __DISKSPACEWATCHER_H__
#include "nsIDiskSpaceWatcher.h"
#include "nsIObserver.h"
#include "nsCOMPtr.h"
class DiskSpaceWatcher final : public nsIDiskSpaceWatcher,
public nsIObserver
{
public:
NS_DECL_ISUPPORTS
NS_DECL_NSIDISKSPACEWATCHER
NS_DECL_NSIOBSERVER
static already_AddRefed<DiskSpaceWatcher>
FactoryCreate();
static void UpdateState(bool aIsDiskFull, uint64_t aFreeSpace);
private:
DiskSpaceWatcher();
~DiskSpaceWatcher();
static uint64_t sFreeSpace;
static bool sIsDiskFull;
};
#endif // __DISKSPACEWATCHER_H__

23
toolkit/components/diskspacewatcher/moz.build
View file

@ -1,23 +0,0 @@
# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
# vim: set filetype=python:
# 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/.
XPIDL_SOURCES += [
'nsIDiskSpaceWatcher.idl',
]
EXPORTS += [
'DiskSpaceWatcher.h'
]
XPIDL_MODULE = 'diskspacewatcher'
SOURCES = [
'DiskSpaceWatcher.cpp',
]
include('/ipc/chromium/chromium-config.mozbuild')
FINAL_LIBRARY = 'xul'

25
toolkit/components/diskspacewatcher/nsIDiskSpaceWatcher.idl
View file

@ -1,25 +0,0 @@
/* 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/. */
#include "nsISupports.idl"
%{ C++
#ifdef XP_WIN
#undef GetFreeSpace
#endif
%}
[scriptable, uuid(3aceba74-2ed5-4e99-8fe4-06e90e2b8ef0)]
interface nsIDiskSpaceWatcher : nsISupports
{
readonly attribute bool isDiskFull; // True if we are low on disk space.
readonly attribute unsigned long long freeSpace; // The free space currently available.
};
%{ C++
#define DISKSPACEWATCHER_CONTRACTID "@mozilla.org/toolkit/disk-space-watcher;1"
// The data for this notification will be either 'free' or 'full'.
#define DISKSPACEWATCHER_OBSERVER_TOPIC "disk-space-watcher"
%}

1
toolkit/components/moz.build
View file

@ -24,7 +24,6 @@ DIRS += [
'contextualidentity',
'cookie',
'crashmonitor',
'diskspacewatcher',
'downloads',
'exthelper',
'filewatcher',

1
uriloader/prefetch/nsOfflineCacheUpdate.h
View file

@ -375,7 +375,6 @@ private:
bool mDisabled;
bool mUpdateRunning;
bool mLowFreeSpace;
};
#endif

32
uriloader/prefetch/nsOfflineCacheUpdateService.cpp
View file

@ -39,7 +39,6 @@
#include "mozilla/Preferences.h"
#include "mozilla/Attributes.h"
#include "mozilla/Unused.h"
#include "nsIDiskSpaceWatcher.h"
#include "nsIDocShell.h"
#include "nsIDocShellTreeItem.h"
#include "nsIDocShellTreeOwner.h"
@ -246,7 +245,6 @@ NS_IMPL_ISUPPORTS(nsOfflineCacheUpdateService,
nsOfflineCacheUpdateService::nsOfflineCacheUpdateService()
: mDisabled(false)
, mUpdateRunning(false)
, mLowFreeSpace(false)
{
MOZ_ASSERT(NS_IsMainThread());
Preferences::AddBoolVarCache(&sAllowOfflineCache,
@ -273,19 +271,6 @@ nsOfflineCacheUpdateService::Init()
true);
NS_ENSURE_SUCCESS(rv, rv);
// Get the current status of the disk in terms of free space and observe
// low device storage notifications.
nsCOMPtr<nsIDiskSpaceWatcher> diskSpaceWatcherService =
do_GetService("@mozilla.org/toolkit/disk-space-watcher;1");
if (diskSpaceWatcherService) {
diskSpaceWatcherService->GetIsDiskFull(&mLowFreeSpace);
} else {
NS_WARNING("Could not get disk status from nsIDiskSpaceWatcher");
}
rv = observerService->AddObserver(this, "disk-space-watcher", false);
NS_ENSURE_SUCCESS(rv, rv);
gOfflineCacheUpdateService = this;
return NS_OK;
@ -407,11 +392,7 @@ nsOfflineCacheUpdateService::ProcessNextUpdate()
if (mUpdates.Length() > 0) {
mUpdateRunning = true;
// Canceling the update before Begin() call will make the update
// asynchronously finish with an error.
if (mLowFreeSpace) {
mUpdates[0]->Cancel();
}
return mUpdates[0]->Begin();
}
@ -582,17 +563,6 @@ nsOfflineCacheUpdateService::Observe(nsISupports *aSubject,
mDisabled = true;
}
if (!strcmp(aTopic, "disk-space-watcher")) {
if (NS_LITERAL_STRING("full").Equals(aData)) {
mLowFreeSpace = true;
for (uint32_t i = 0; i < mUpdates.Length(); i++) {
mUpdates[i]->Cancel();
}
} else if (NS_LITERAL_STRING("free").Equals(aData)) {
mLowFreeSpace = false;
}
}
return NS_OK;
}