1 /* 2 * Copyright (C) 2011 Google Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are 6 * met: 7 * 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above 11 * copyright notice, this list of conditions and the following disclaimer 12 * in the documentation and/or other materials provided with the 13 * distribution. 14 * * Neither the name of Google Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived from 16 * this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #include "config.h" 32 #include "modules/webdatabase/QuotaTracker.h" 33 34 #include "public/platform/Platform.h" 35 #include "wtf/StdLibExtras.h" 36 #include "wtf/Threading.h" 37 38 namespace blink { 39 40 QuotaTracker& QuotaTracker::instance() 41 { 42 AtomicallyInitializedStatic(QuotaTracker&, tracker = *new QuotaTracker); 43 return tracker; 44 } 45 46 void QuotaTracker::getDatabaseSizeAndSpaceAvailableToOrigin( 47 const String& originIdentifier, const String& databaseName, 48 unsigned long long* databaseSize, unsigned long long* spaceAvailable) 49 { 50 // Extra scope to unlock prior to potentially calling Platform. 51 { 52 MutexLocker lockData(m_dataGuard); 53 ASSERT(m_databaseSizes.contains(originIdentifier)); 54 HashMap<String, SizeMap>::const_iterator it = m_databaseSizes.find(originIdentifier); 55 ASSERT(it->value.contains(databaseName)); 56 *databaseSize = it->value.get(databaseName); 57 58 if (m_spaceAvailableToOrigins.contains(originIdentifier)) { 59 *spaceAvailable = m_spaceAvailableToOrigins.get(originIdentifier); 60 return; 61 } 62 } 63 64 // The embedder hasn't pushed this value to us, so we pull it as needed. 65 *spaceAvailable = Platform::current()->databaseGetSpaceAvailableForOrigin(originIdentifier); 66 } 67 68 void QuotaTracker::updateDatabaseSize( 69 const String& originIdentifier, const String& databaseName, 70 unsigned long long databaseSize) 71 { 72 MutexLocker lockData(m_dataGuard); 73 HashMap<String, SizeMap>::ValueType* it = m_databaseSizes.add(originIdentifier, SizeMap()).storedValue; 74 it->value.set(databaseName, databaseSize); 75 } 76 77 void QuotaTracker::updateSpaceAvailableToOrigin(const String& originIdentifier, unsigned long long spaceAvailable) 78 { 79 MutexLocker lockData(m_dataGuard); 80 m_spaceAvailableToOrigins.set(originIdentifier, spaceAvailable); 81 } 82 83 void QuotaTracker::resetSpaceAvailableToOrigin(const String& originIdentifier) 84 { 85 MutexLocker lockData(m_dataGuard); 86 m_spaceAvailableToOrigins.remove(originIdentifier); 87 } 88 89 } // namespace blink 90
