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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" |
| 11 #include "base/message_loop_proxy.h" | 11 #include "base/message_loop_proxy.h" |
| 12 #include "base/threading/thread_restrictions.h" | 12 #include "base/threading/thread_restrictions.h" |
| 13 | 13 |
| 14 namespace content { | 14 namespace content { |
| 15 | 15 |
| 16 namespace { | 16 namespace { |
| 17 | 17 |
| 18 // Friendly names for the well-known threads. | 18 // Friendly names for the well-known threads. |
| 19 static const char* g_browser_thread_names[BrowserThread::ID_COUNT] = { | 19 static const char* g_browser_thread_names[BrowserThread::ID_COUNT] = { |
| 20 "", // UI (name assembled in browser_main.cc). | 20 "", // UI (name assembled in browser_main.cc). |
| 21 "Chrome_DBThread", // DB | 21 "Chrome_DBThread", // DB |
| 22 "Chrome_WebKitThread", // WEBKIT_DEPRECATED | 22 "Chrome_WebKitThread", // WEBKIT_DEPRECATED |
| 23 "Chrome_FileThread", // FILE | 23 "Chrome_FileThread", // FILE |
| 24 "Chrome_FileUserBlockingThread", // FILE_USER_BLOCKING | 24 "Chrome_FileUserBlockingThread", // FILE_USER_BLOCKING |
| 25 "Chrome_ProcessLauncherThread", // PROCESS_LAUNCHER | 25 "Chrome_ProcessLauncherThread", // PROCESS_LAUNCHER |
| 26 "Chrome_CacheThread", // CACHE | 26 "Chrome_CacheThread", // CACHE |
| 27 "Chrome_IOThread", // IO | 27 "Chrome_IOThread", // IO |
| 28 #if defined(OS_CHROMEOS) | |
| 29 "Chrome_WebSocketproxyThread", // WEB_SOCKET_PROXY | |
| 30 #endif | |
| 31 }; | 28 }; |
| 32 | 29 |
| 33 // This lock protects |g_browser_threads|. Do not read or modify that | 30 // This lock protects |g_browser_threads|. Do not read or modify that |
| 34 // array without holding this lock. Do not block while holding this | 31 // array without holding this lock. Do not block while holding this |
| 35 // lock. | 32 // lock. |
| 36 base::LazyInstance<base::Lock, | 33 base::LazyInstance<base::Lock, |
| 37 base::LeakyLazyInstanceTraits<base::Lock> > | 34 base::LeakyLazyInstanceTraits<base::Lock> > |
| 38 g_lock = LAZY_INSTANCE_INITIALIZER; | 35 g_lock = LAZY_INSTANCE_INITIALIZER; |
| 39 | 36 |
| 40 // This array is protected by |g_lock|. The threads are not owned by this | 37 // This array is protected by |g_lock|. The threads are not owned by this |
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| 311 AtomicWord* storage = reinterpret_cast<AtomicWord*>( | 308 AtomicWord* storage = reinterpret_cast<AtomicWord*>( |
| 312 &g_browser_thread_delegates[identifier]); | 309 &g_browser_thread_delegates[identifier]); |
| 313 AtomicWord old_pointer = base::subtle::NoBarrier_AtomicExchange( | 310 AtomicWord old_pointer = base::subtle::NoBarrier_AtomicExchange( |
| 314 storage, reinterpret_cast<AtomicWord>(delegate)); | 311 storage, reinterpret_cast<AtomicWord>(delegate)); |
| 315 | 312 |
| 316 // This catches registration when previously registered. | 313 // This catches registration when previously registered. |
| 317 DCHECK(!delegate || !old_pointer); | 314 DCHECK(!delegate || !old_pointer); |
| 318 } | 315 } |
| 319 | 316 |
| 320 } // namespace content | 317 } // namespace content |
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