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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 // WARNING: You should *NOT* be using this class directly. PlatformThread is | 5 // WARNING: You should *NOT* be using this class directly. PlatformThread is |
6 // the low-level platform-specific abstraction to the OS's threading interface. | 6 // the low-level platform-specific abstraction to the OS's threading interface. |
7 // You should instead be using a message-loop driven Thread, see thread.h. | 7 // You should instead be using a message-loop driven Thread, see thread.h. |
8 | 8 |
9 #ifndef BASE_THREADING_PLATFORM_THREAD_H_ | 9 #ifndef BASE_THREADING_PLATFORM_THREAD_H_ |
10 #define BASE_THREADING_PLATFORM_THREAD_H_ | 10 #define BASE_THREADING_PLATFORM_THREAD_H_ |
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66 | 66 |
67 // Used to operate on threads. | 67 // Used to operate on threads. |
68 class PlatformThreadHandle { | 68 class PlatformThreadHandle { |
69 public: | 69 public: |
70 #if defined(OS_WIN) | 70 #if defined(OS_WIN) |
71 typedef void* Handle; | 71 typedef void* Handle; |
72 #elif defined(OS_POSIX) | 72 #elif defined(OS_POSIX) |
73 typedef pthread_t Handle; | 73 typedef pthread_t Handle; |
74 #endif | 74 #endif |
75 | 75 |
76 PlatformThreadHandle() | 76 PlatformThreadHandle() : handle_(0) {} |
77 : handle_(0), | |
78 id_(0) { | |
79 } | |
80 | 77 |
81 explicit PlatformThreadHandle(Handle handle) | 78 explicit PlatformThreadHandle(Handle handle) : handle_(handle) {} |
82 : handle_(handle), | |
83 id_(0) { | |
84 } | |
85 | |
86 PlatformThreadHandle(Handle handle, | |
87 PlatformThreadId id) | |
88 : handle_(handle), | |
89 id_(id) { | |
90 } | |
91 | |
92 // TODO(toyoshim): Remove id() and use PlatformThread::CurrentId() instead. | |
93 PlatformThreadId id() const { | |
94 return id_; | |
95 } | |
96 | 79 |
97 bool is_equal(const PlatformThreadHandle& other) const { | 80 bool is_equal(const PlatformThreadHandle& other) const { |
98 return handle_ == other.handle_; | 81 return handle_ == other.handle_; |
99 } | 82 } |
100 | 83 |
101 bool is_null() const { | 84 bool is_null() const { |
102 return !handle_; | 85 return !handle_; |
103 } | 86 } |
104 | 87 |
105 Handle platform_handle() const { | |
106 return handle_; | |
107 } | |
108 | |
109 private: | 88 private: |
89 friend class MessagePumpForUI; | |
90 friend class PlatformThread; | |
91 friend class ThreadIdNameManager; | |
gab
2015/06/30 13:57:34
I don't like using friend and I don't think I mind
Takashi Toyoshima
2015/07/02 06:34:28
OK, let me upload another patch set.
| |
110 Handle handle_; | 92 Handle handle_; |
111 PlatformThreadId id_; | |
112 }; | 93 }; |
113 | 94 |
114 const PlatformThreadId kInvalidThreadId(0); | 95 const PlatformThreadId kInvalidThreadId(0); |
115 | 96 |
116 // Valid values for priority of Thread::Options and SimpleThread::Options, and | 97 // Valid values for priority of Thread::Options and SimpleThread::Options, and |
117 // SetCurrentThreadPriority(), listed in increasing order of importance. | 98 // SetCurrentThreadPriority(), listed in increasing order of importance. |
118 enum class ThreadPriority { | 99 enum class ThreadPriority { |
119 // Suitable for threads that shouldn't disrupt high priority work. | 100 // Suitable for threads that shouldn't disrupt high priority work. |
120 BACKGROUND, | 101 BACKGROUND, |
121 // Default priority level. | 102 // Default priority level. |
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202 | 183 |
203 static ThreadPriority GetCurrentThreadPriority(); | 184 static ThreadPriority GetCurrentThreadPriority(); |
204 | 185 |
205 private: | 186 private: |
206 DISALLOW_IMPLICIT_CONSTRUCTORS(PlatformThread); | 187 DISALLOW_IMPLICIT_CONSTRUCTORS(PlatformThread); |
207 }; | 188 }; |
208 | 189 |
209 } // namespace base | 190 } // namespace base |
210 | 191 |
211 #endif // BASE_THREADING_PLATFORM_THREAD_H_ | 192 #endif // BASE_THREADING_PLATFORM_THREAD_H_ |
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