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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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253 RefPtrWillBeRawPtr<ServiceWorker> worker = adoptRefWillBeNoop(new ServiceWor ker(executionContext, adoptPtr(outerWorker))); | 253 RefPtrWillBeRawPtr<ServiceWorker> worker = adoptRefWillBeNoop(new ServiceWor ker(executionContext, adoptPtr(outerWorker))); |
254 worker->suspendIfNeeded(); | 254 worker->suspendIfNeeded(); |
255 return worker.release(); | 255 return worker.release(); |
256 } | 256 } |
257 | 257 |
258 ServiceWorker::ServiceWorker(ExecutionContext* executionContext, PassOwnPtr<WebS erviceWorker> worker) | 258 ServiceWorker::ServiceWorker(ExecutionContext* executionContext, PassOwnPtr<WebS erviceWorker> worker) |
259 : AbstractWorker(executionContext) | 259 : AbstractWorker(executionContext) |
260 , m_outerWorker(worker) | 260 , m_outerWorker(worker) |
261 , m_proxyState(Initial) | 261 , m_proxyState(Initial) |
262 { | 262 { |
263 WILL_REGISTER_PREFINALIZER(this); | |
263 ASSERT(m_outerWorker); | 264 ASSERT(m_outerWorker); |
264 m_outerWorker->setProxy(this); | 265 m_outerWorker->setProxy(this); |
265 } | 266 } |
266 | 267 |
268 ServiceWorker::~ServiceWorker() | |
269 { | |
haraken
2015/01/26 01:39:42
Can we add ASSERT(!m_outerWorker)?
sof
2015/01/26 06:32:46
Non-Oilpan you clearly could.
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270 } | |
271 | |
272 void ServiceWorker::dispose() | |
273 { | |
274 // With Oilpan enabled, the observable lifetime of a ServiceWorker | |
275 // must not extend beyond when it has been deemed to be unreachable | |
276 // by the garbage collector. The embedder must be detached before | |
277 // it is eventually (lazily) swept, so as to prevent that. Otherwise | |
278 // the embedder might risk accessing a to-be-finalized object that | |
279 // is not in a valid state. | |
280 // | |
281 // The dispose() method is hooked up to the garbage collector by | |
282 // way of a "pre finalizer", a method that is run after marking | |
283 // has completed, but before any sweeping takes place. | |
284 m_outerWorker.clear(); | |
285 } | |
286 | |
267 } // namespace blink | 287 } // namespace blink |
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