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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "content/browser/browser_thread_impl.h" | 5 #include "content/browser/browser_thread_impl.h" |
6 | 6 |
7 #include "base/atomicops.h" | 7 #include "base/atomicops.h" |
8 #include "base/bind.h" | 8 #include "base/bind.h" |
9 #include "base/lazy_instance.h" | 9 #include "base/lazy_instance.h" |
10 #include "base/message_loop.h" | 10 #include "base/message_loop.h" |
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49 | 49 |
50 // Only atomic operations are used on this array. The delegates are not owned | 50 // Only atomic operations are used on this array. The delegates are not owned |
51 // by this array, rather by whoever calls BrowserThread::SetDelegate. | 51 // by this array, rather by whoever calls BrowserThread::SetDelegate. |
52 BrowserThreadDelegate* thread_delegates[BrowserThread::ID_COUNT]; | 52 BrowserThreadDelegate* thread_delegates[BrowserThread::ID_COUNT]; |
53 | 53 |
54 // This pointer is deliberately leaked on shutdown. This allows the pool to | 54 // This pointer is deliberately leaked on shutdown. This allows the pool to |
55 // implement "continue on shutdown" semantics. | 55 // implement "continue on shutdown" semantics. |
56 base::SequencedWorkerPool* blocking_pool; | 56 base::SequencedWorkerPool* blocking_pool; |
57 }; | 57 }; |
58 | 58 |
59 base::LazyInstance<BrowserThreadGlobals, | 59 base::LazyInstance<BrowserThreadGlobals>::Leaky |
60 base::LeakyLazyInstanceTraits<BrowserThreadGlobals> > | |
61 g_globals = LAZY_INSTANCE_INITIALIZER; | 60 g_globals = LAZY_INSTANCE_INITIALIZER; |
62 | 61 |
63 } // namespace | 62 } // namespace |
64 | 63 |
65 BrowserThreadImpl::BrowserThreadImpl(ID identifier) | 64 BrowserThreadImpl::BrowserThreadImpl(ID identifier) |
66 : Thread(g_browser_thread_names[identifier]), | 65 : Thread(g_browser_thread_names[identifier]), |
67 identifier_(identifier) { | 66 identifier_(identifier) { |
68 Initialize(); | 67 Initialize(); |
69 } | 68 } |
70 | 69 |
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362 AtomicWord* storage = reinterpret_cast<AtomicWord*>( | 361 AtomicWord* storage = reinterpret_cast<AtomicWord*>( |
363 &globals.thread_delegates[identifier]); | 362 &globals.thread_delegates[identifier]); |
364 AtomicWord old_pointer = base::subtle::NoBarrier_AtomicExchange( | 363 AtomicWord old_pointer = base::subtle::NoBarrier_AtomicExchange( |
365 storage, reinterpret_cast<AtomicWord>(delegate)); | 364 storage, reinterpret_cast<AtomicWord>(delegate)); |
366 | 365 |
367 // This catches registration when previously registered. | 366 // This catches registration when previously registered. |
368 DCHECK(!delegate || !old_pointer); | 367 DCHECK(!delegate || !old_pointer); |
369 } | 368 } |
370 | 369 |
371 } // namespace content | 370 } // namespace content |
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