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dom/indexedDB/FileInfo.cpp@6474c204b198 (annotated)

dom/indexedDB/FileInfo.cpp

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

author

Michael Schloh von Bennewitz <michael@schloh.com>

date

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

changeset 0

6474c204b198

permissions

-rw-r--r--

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

michael@0	1	/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0	2	/* vim: set ts=2 et sw=2 tw=80: */
michael@0	3	/* This Source Code Form is subject to the terms of the Mozilla Public
michael@0	4	* License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0	5	* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0	6
michael@0	7	#include "FileInfo.h"
michael@0	8	#include "nsThreadUtils.h"
michael@0	9	#include "mozilla/dom/quota/QuotaManager.h"
michael@0	10
michael@0	11	USING_INDEXEDDB_NAMESPACE
michael@0	12
michael@0	13	namespace {
michael@0	14
michael@0	15	class CleanupFileRunnable MOZ_FINAL : public nsIRunnable
michael@0	16	{
michael@0	17	public:
michael@0	18	NS_DECL_THREADSAFE_ISUPPORTS
michael@0	19	NS_DECL_NSIRUNNABLE
michael@0	20
michael@0	21	CleanupFileRunnable(FileManager* aFileManager, int64_t aFileId);
michael@0	22
michael@0	23	private:
michael@0	24	nsRefPtr<FileManager> mFileManager;
michael@0	25	int64_t mFileId;
michael@0	26	};
michael@0	27
michael@0	28	} // anonymous namespace
michael@0	29
michael@0	30	// static
michael@0	31	FileInfo*
michael@0	32	FileInfo::Create(FileManager* aFileManager, int64_t aId)
michael@0	33	{
michael@0	34	MOZ_ASSERT(aId > 0, "Wrong id!");
michael@0	35
michael@0	36	if (aId <= INT16_MAX) {
michael@0	37	return new FileInfo16(aFileManager, aId);
michael@0	38	}
michael@0	39
michael@0	40	if (aId <= INT32_MAX) {
michael@0	41	return new FileInfo32(aFileManager, aId);
michael@0	42	}
michael@0	43
michael@0	44	return new FileInfo64(aFileManager, aId);
michael@0	45	}
michael@0	46
michael@0	47	void
michael@0	48	FileInfo::GetReferences(int32_t* aRefCnt, int32_t* aDBRefCnt,
michael@0	49	int32_t* aSliceRefCnt)
michael@0	50	{
michael@0	51	if (IndexedDatabaseManager::IsClosed()) {
michael@0	52	NS_ERROR("Shouldn't be called after shutdown!");
michael@0	53
michael@0	54	if (aRefCnt) {
michael@0	55	*aRefCnt = -1;
michael@0	56	}
michael@0	57
michael@0	58	if (aDBRefCnt) {
michael@0	59	*aDBRefCnt = -1;
michael@0	60	}
michael@0	61
michael@0	62	if (aSliceRefCnt) {
michael@0	63	*aSliceRefCnt = -1;
michael@0	64	}
michael@0	65
michael@0	66	return;
michael@0	67	}
michael@0	68
michael@0	69	MutexAutoLock lock(IndexedDatabaseManager::FileMutex());
michael@0	70
michael@0	71	if (aRefCnt) {
michael@0	72	*aRefCnt = mRefCnt;
michael@0	73	}
michael@0	74
michael@0	75	if (aDBRefCnt) {
michael@0	76	*aDBRefCnt = mDBRefCnt;
michael@0	77	}
michael@0	78
michael@0	79	if (aSliceRefCnt) {
michael@0	80	*aSliceRefCnt = mSliceRefCnt;
michael@0	81	}
michael@0	82	}
michael@0	83
michael@0	84	void
michael@0	85	FileInfo::UpdateReferences(mozilla::ThreadSafeAutoRefCnt& aRefCount,
michael@0	86	int32_t aDelta, bool aClear)
michael@0	87	{
michael@0	88	if (IndexedDatabaseManager::IsClosed()) {
michael@0	89	NS_ERROR("Shouldn't be called after shutdown!");
michael@0	90	return;
michael@0	91	}
michael@0	92
michael@0	93	bool needsCleanup;
michael@0	94	{
michael@0	95	MutexAutoLock lock(IndexedDatabaseManager::FileMutex());
michael@0	96
michael@0	97	aRefCount = aClear ? 0 : aRefCount + aDelta;
michael@0	98
michael@0	99	if (mRefCnt + mDBRefCnt + mSliceRefCnt > 0) {
michael@0	100	return;
michael@0	101	}
michael@0	102
michael@0	103	mFileManager->mFileInfos.Remove(Id());
michael@0	104
michael@0	105	needsCleanup = !mFileManager->Invalidated();
michael@0	106	}
michael@0	107
michael@0	108	if (needsCleanup) {
michael@0	109	Cleanup();
michael@0	110	}
michael@0	111
michael@0	112	delete this;
michael@0	113	}
michael@0	114
michael@0	115	void
michael@0	116	FileInfo::Cleanup()
michael@0	117	{
michael@0	118	nsRefPtr<CleanupFileRunnable> cleaner =
michael@0	119	new CleanupFileRunnable(mFileManager, Id());
michael@0	120
michael@0	121	// IndexedDatabaseManager is main-thread only.
michael@0	122	if (!NS_IsMainThread()) {
michael@0	123	NS_DispatchToMainThread(cleaner);
michael@0	124	return;
michael@0	125	}
michael@0	126
michael@0	127	cleaner->Run();
michael@0	128	}
michael@0	129
michael@0	130	CleanupFileRunnable::CleanupFileRunnable(FileManager* aFileManager,
michael@0	131	int64_t aFileId)
michael@0	132	: mFileManager(aFileManager), mFileId(aFileId)
michael@0	133	{
michael@0	134	}
michael@0	135
michael@0	136	NS_IMPL_ISUPPORTS(CleanupFileRunnable,
michael@0	137	nsIRunnable)
michael@0	138
michael@0	139	NS_IMETHODIMP
michael@0	140	CleanupFileRunnable::Run()
michael@0	141	{
michael@0	142	if (mozilla::dom::quota::QuotaManager::IsShuttingDown()) {
michael@0	143	return NS_OK;
michael@0	144	}
michael@0	145
michael@0	146	nsRefPtr<IndexedDatabaseManager> mgr = IndexedDatabaseManager::Get();
michael@0	147	MOZ_ASSERT(mgr);
michael@0	148
michael@0	149	if (NS_FAILED(mgr->AsyncDeleteFile(mFileManager, mFileId))) {
michael@0	150	NS_WARNING("Failed to delete file asynchronously!");
michael@0	151	}
michael@0	152
michael@0	153	return NS_OK;
michael@0	154	}