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1 /* | 1 /* |
2 * Copyright (C) 2013 Google Inc. All rights reserved. | 2 * Copyright (C) 2013 Google Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions are | 5 * modification, are permitted provided that the following conditions are |
6 * met: | 6 * met: |
7 * | 7 * |
8 * * Redistributions of source code must retain the above copyright | 8 * * Redistributions of source code must retain the above copyright |
9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
10 * * Redistributions in binary form must reproduce the above | 10 * * Redistributions in binary form must reproduce the above |
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143 RefPtrWillBeRawPtr<ServiceWorker> worker = adoptRefWillBeNoop(new ServiceWor
ker(executionContext, adoptPtr(outerWorker))); | 143 RefPtrWillBeRawPtr<ServiceWorker> worker = adoptRefWillBeNoop(new ServiceWor
ker(executionContext, adoptPtr(outerWorker))); |
144 worker->suspendIfNeeded(); | 144 worker->suspendIfNeeded(); |
145 return worker.release(); | 145 return worker.release(); |
146 } | 146 } |
147 | 147 |
148 ServiceWorker::ServiceWorker(ExecutionContext* executionContext, PassOwnPtr<WebS
erviceWorker> worker) | 148 ServiceWorker::ServiceWorker(ExecutionContext* executionContext, PassOwnPtr<WebS
erviceWorker> worker) |
149 : AbstractWorker(executionContext) | 149 : AbstractWorker(executionContext) |
150 , m_outerWorker(worker) | 150 , m_outerWorker(worker) |
151 , m_wasStopped(false) | 151 , m_wasStopped(false) |
152 { | 152 { |
153 #if ENABLE(OILPAN) | |
154 ThreadState::current()->registerPreFinalizer(*this); | |
155 #endif | |
156 ASSERT(m_outerWorker); | 153 ASSERT(m_outerWorker); |
157 m_outerWorker->setProxy(this); | 154 m_outerWorker->setProxy(this); |
158 } | 155 } |
159 | 156 |
160 ServiceWorker::~ServiceWorker() | 157 ServiceWorker::~ServiceWorker() |
161 { | 158 { |
162 #if ENABLE(OILPAN) | |
163 ASSERT(!m_outerWorker); | |
164 #endif | |
165 } | |
166 | |
167 void ServiceWorker::dispose() | |
168 { | |
169 // With Oilpan enabled, the observable lifetime of a ServiceWorker | |
170 // must not extend beyond when it has been deemed to be unreachable | |
171 // by the garbage collector. The embedder must be detached before | |
172 // it is eventually (lazily) swept, so as to prevent that. Otherwise | |
173 // the embedder might risk accessing a to-be-finalized object that | |
174 // is not in a valid state. | |
175 // | |
176 // The dispose() method is hooked up to the garbage collector by | |
177 // way of a "pre finalizer", a method that is run after marking | |
178 // has completed, but before any sweeping takes place. | |
179 m_outerWorker.clear(); | |
180 } | 159 } |
181 | 160 |
182 } // namespace blink | 161 } // namespace blink |
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