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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 "base/threading/thread_restrictions.h" | 5 #include "base/threading/thread_restrictions.h" |
6 | 6 |
7 #if ENABLE_THREAD_RESTRICTIONS | 7 #if ENABLE_THREAD_RESTRICTIONS |
8 | 8 |
9 #include "base/lazy_instance.h" | 9 #include "base/lazy_instance.h" |
10 #include "base/logging.h" | 10 #include "base/logging.h" |
11 #include "base/threading/thread_local.h" | 11 #include "base/threading/thread_local.h" |
12 | 12 |
13 namespace base { | 13 namespace base { |
14 | 14 |
15 namespace { | 15 namespace { |
16 | 16 |
17 LazyInstance<ThreadLocalBoolean>::Leaky | 17 LazyInstance<ThreadLocalBoolean>::Leaky |
18 g_io_disallowed = LAZY_INSTANCE_INITIALIZER; | 18 g_io_disallowed = LAZY_INSTANCE_INITIALIZER; |
19 | 19 |
20 LazyInstance<ThreadLocalBoolean>::Leaky | 20 LazyInstance<ThreadLocalBoolean>::Leaky |
21 g_singleton_disallowed = LAZY_INSTANCE_INITIALIZER; | 21 g_singleton_disallowed = LAZY_INSTANCE_INITIALIZER; |
22 | 22 |
23 LazyInstance<ThreadLocalBoolean>::Leaky | 23 LazyInstance<ThreadLocalBoolean>::Leaky |
24 g_wait_disallowed = LAZY_INSTANCE_INITIALIZER; | 24 g_wait_disallowed = LAZY_INSTANCE_INITIALIZER; |
25 | 25 |
26 } // anonymous namespace | 26 } // namespace |
27 | 27 |
28 // static | 28 // static |
29 bool ThreadRestrictions::SetIOAllowed(bool allowed) { | 29 bool ThreadRestrictions::SetIOAllowed(bool allowed) { |
30 bool previous_disallowed = g_io_disallowed.Get().Get(); | 30 bool previous_disallowed = g_io_disallowed.Get().Get(); |
31 g_io_disallowed.Get().Set(!allowed); | 31 g_io_disallowed.Get().Set(!allowed); |
32 return !previous_disallowed; | 32 return !previous_disallowed; |
33 } | 33 } |
34 | 34 |
35 // static | 35 // static |
36 void ThreadRestrictions::AssertIOAllowed() { | 36 void ThreadRestrictions::AssertIOAllowed() { |
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62 } | 62 } |
63 | 63 |
64 // static | 64 // static |
65 void ThreadRestrictions::DisallowWaiting() { | 65 void ThreadRestrictions::DisallowWaiting() { |
66 g_wait_disallowed.Get().Set(true); | 66 g_wait_disallowed.Get().Set(true); |
67 } | 67 } |
68 | 68 |
69 // static | 69 // static |
70 void ThreadRestrictions::AssertWaitAllowed() { | 70 void ThreadRestrictions::AssertWaitAllowed() { |
71 if (g_wait_disallowed.Get().Get()) { | 71 if (g_wait_disallowed.Get().Get()) { |
72 LOG(FATAL) << "Waiting is not allowed to be used on this thread to prevent" | 72 LOG(FATAL) << "Waiting is not allowed to be used on this thread to prevent " |
73 << "jank and deadlock."; | 73 << "jank and deadlock."; |
74 } | 74 } |
75 } | 75 } |
76 | 76 |
77 bool ThreadRestrictions::SetWaitAllowed(bool allowed) { | 77 bool ThreadRestrictions::SetWaitAllowed(bool allowed) { |
78 bool previous_disallowed = g_wait_disallowed.Get().Get(); | 78 bool previous_disallowed = g_wait_disallowed.Get().Get(); |
79 g_wait_disallowed.Get().Set(!allowed); | 79 g_wait_disallowed.Get().Set(!allowed); |
80 return !previous_disallowed; | 80 return !previous_disallowed; |
81 } | 81 } |
82 | 82 |
83 } // namespace base | 83 } // namespace base |
84 | 84 |
85 #endif // ENABLE_THREAD_RESTRICTIONS | 85 #endif // ENABLE_THREAD_RESTRICTIONS |
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