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1 /* | 1 /* |
2 * Copyright (C) 2010 Google Inc. All rights reserved. | 2 * Copyright (C) 2010 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 | 5 * modification, are permitted provided that the following conditions |
6 * are met: | 6 * are met: |
7 * | 7 * |
8 * 1. Redistributions of source code must retain the above copyright | 8 * 1. 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 * 2. Redistributions in binary form must reproduce the above copyright | 10 * 2. Redistributions in binary form must reproduce the above copyright |
(...skipping 81 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
92 // createAndLoadAsynchronouslyIfNecessary and because we haven't started | 92 // createAndLoadAsynchronouslyIfNecessary and because we haven't started |
93 // loadTask yet for this object. | 93 // loadTask yet for this object. |
94 DCHECK(!m_hrtfDatabase); | 94 DCHECK(!m_hrtfDatabase); |
95 DCHECK(!m_thread); | 95 DCHECK(!m_thread); |
96 | 96 |
97 // Start the asynchronous database loading process. | 97 // Start the asynchronous database loading process. |
98 m_thread = WTF::wrapUnique( | 98 m_thread = WTF::wrapUnique( |
99 Platform::current()->createThread("HRTF database loader")); | 99 Platform::current()->createThread("HRTF database loader")); |
100 // TODO(alexclarke): Should this be posted as a loading task? | 100 // TODO(alexclarke): Should this be posted as a loading task? |
101 m_thread->getWebTaskRunner()->postTask( | 101 m_thread->getWebTaskRunner()->postTask( |
102 BLINK_FROM_HERE, crossThreadBind(&HRTFDatabaseLoader::loadTask, | 102 BLINK_FROM_HERE, |
103 crossThreadUnretained(this))); | 103 crossThreadBind(&HRTFDatabaseLoader::loadTask, |
| 104 crossThreadUnretained(this))); |
104 } | 105 } |
105 | 106 |
106 HRTFDatabase* HRTFDatabaseLoader::database() { | 107 HRTFDatabase* HRTFDatabaseLoader::database() { |
107 DCHECK(!isMainThread()); | 108 DCHECK(!isMainThread()); |
108 | 109 |
109 // Seeing that this is only called from the audio thread, we can't block. | 110 // Seeing that this is only called from the audio thread, we can't block. |
110 // It's ok to return nullptr if we can't get the lock. | 111 // It's ok to return nullptr if we can't get the lock. |
111 MutexTryLocker tryLocker(m_lock); | 112 MutexTryLocker tryLocker(m_lock); |
112 | 113 |
113 if (!tryLocker.locked()) | 114 if (!tryLocker.locked()) |
114 return nullptr; | 115 return nullptr; |
115 | 116 |
116 return m_hrtfDatabase.get(); | 117 return m_hrtfDatabase.get(); |
117 } | 118 } |
118 | 119 |
119 // This cleanup task is needed just to make sure that the loader thread finishes | 120 // This cleanup task is needed just to make sure that the loader thread finishes |
120 // the load task and thus the loader thread doesn't touch m_thread any more. | 121 // the load task and thus the loader thread doesn't touch m_thread any more. |
121 void HRTFDatabaseLoader::cleanupTask(WaitableEvent* sync) { | 122 void HRTFDatabaseLoader::cleanupTask(WaitableEvent* sync) { |
122 sync->signal(); | 123 sync->signal(); |
123 } | 124 } |
124 | 125 |
125 void HRTFDatabaseLoader::waitForLoaderThreadCompletion() { | 126 void HRTFDatabaseLoader::waitForLoaderThreadCompletion() { |
126 if (!m_thread) | 127 if (!m_thread) |
127 return; | 128 return; |
128 | 129 |
129 WaitableEvent sync; | 130 WaitableEvent sync; |
130 // TODO(alexclarke): Should this be posted as a loading task? | 131 // TODO(alexclarke): Should this be posted as a loading task? |
131 m_thread->getWebTaskRunner()->postTask( | 132 m_thread->getWebTaskRunner()->postTask( |
132 BLINK_FROM_HERE, crossThreadBind(&HRTFDatabaseLoader::cleanupTask, | 133 BLINK_FROM_HERE, |
133 crossThreadUnretained(this), | 134 crossThreadBind(&HRTFDatabaseLoader::cleanupTask, |
134 crossThreadUnretained(&sync))); | 135 crossThreadUnretained(this), |
| 136 crossThreadUnretained(&sync))); |
135 sync.wait(); | 137 sync.wait(); |
136 m_thread.reset(); | 138 m_thread.reset(); |
137 } | 139 } |
138 | 140 |
139 } // namespace blink | 141 } // namespace blink |
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