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1 /* | 1 /* |
2 * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved. | 2 * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license | 4 * Use of this source code is governed by a BSD-style license |
5 * that can be found in the LICENSE file in the root of the source | 5 * that can be found in the LICENSE file in the root of the source |
6 * tree. An additional intellectual property rights grant can be found | 6 * tree. An additional intellectual property rights grant can be found |
7 * in the file PATENTS. All contributing project authors may | 7 * in the file PATENTS. All contributing project authors may |
8 * be found in the AUTHORS file in the root of the source tree. | 8 * be found in the AUTHORS file in the root of the source tree. |
9 */ | 9 */ |
10 | 10 |
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32 struct ThreadAttributes { | 32 struct ThreadAttributes { |
33 ThreadAttributes() { pthread_attr_init(&attr); } | 33 ThreadAttributes() { pthread_attr_init(&attr); } |
34 ~ThreadAttributes() { pthread_attr_destroy(&attr); } | 34 ~ThreadAttributes() { pthread_attr_destroy(&attr); } |
35 pthread_attr_t* operator&() { return &attr; } | 35 pthread_attr_t* operator&() { return &attr; } |
36 pthread_attr_t attr; | 36 pthread_attr_t attr; |
37 }; | 37 }; |
38 } // namespace | 38 } // namespace |
39 | 39 |
40 int ConvertToSystemPriority(ThreadPriority priority, int min_prio, | 40 int ConvertToSystemPriority(ThreadPriority priority, int min_prio, |
41 int max_prio) { | 41 int max_prio) { |
42 DCHECK(max_prio - min_prio > 2); | 42 RTC_DCHECK(max_prio - min_prio > 2); |
43 const int top_prio = max_prio - 1; | 43 const int top_prio = max_prio - 1; |
44 const int low_prio = min_prio + 1; | 44 const int low_prio = min_prio + 1; |
45 | 45 |
46 switch (priority) { | 46 switch (priority) { |
47 case kLowPriority: | 47 case kLowPriority: |
48 return low_prio; | 48 return low_prio; |
49 case kNormalPriority: | 49 case kNormalPriority: |
50 // The -1 ensures that the kHighPriority is always greater or equal to | 50 // The -1 ensures that the kHighPriority is always greater or equal to |
51 // kNormalPriority. | 51 // kNormalPriority. |
52 return (low_prio + top_prio - 1) / 2; | 52 return (low_prio + top_prio - 1) / 2; |
53 case kHighPriority: | 53 case kHighPriority: |
54 return std::max(top_prio - 2, low_prio); | 54 return std::max(top_prio - 2, low_prio); |
55 case kHighestPriority: | 55 case kHighestPriority: |
56 return std::max(top_prio - 1, low_prio); | 56 return std::max(top_prio - 1, low_prio); |
57 case kRealtimePriority: | 57 case kRealtimePriority: |
58 return top_prio; | 58 return top_prio; |
59 } | 59 } |
60 DCHECK(false); | 60 RTC_DCHECK(false); |
61 return low_prio; | 61 return low_prio; |
62 } | 62 } |
63 | 63 |
64 // static | 64 // static |
65 void* ThreadPosix::StartThread(void* param) { | 65 void* ThreadPosix::StartThread(void* param) { |
66 static_cast<ThreadPosix*>(param)->Run(); | 66 static_cast<ThreadPosix*>(param)->Run(); |
67 return 0; | 67 return 0; |
68 } | 68 } |
69 | 69 |
70 ThreadPosix::ThreadPosix(ThreadRunFunction func, void* obj, | 70 ThreadPosix::ThreadPosix(ThreadRunFunction func, void* obj, |
71 const char* thread_name) | 71 const char* thread_name) |
72 : run_function_(func), | 72 : run_function_(func), |
73 obj_(obj), | 73 obj_(obj), |
74 stop_event_(false, false), | 74 stop_event_(false, false), |
75 name_(thread_name ? thread_name : "webrtc"), | 75 name_(thread_name ? thread_name : "webrtc"), |
76 thread_(0) { | 76 thread_(0) { |
77 DCHECK(name_.length() < 64); | 77 RTC_DCHECK(name_.length() < 64); |
78 } | 78 } |
79 | 79 |
80 uint32_t ThreadWrapper::GetThreadId() { | 80 uint32_t ThreadWrapper::GetThreadId() { |
81 return rtc::CurrentThreadId(); | 81 return rtc::CurrentThreadId(); |
82 } | 82 } |
83 | 83 |
84 ThreadPosix::~ThreadPosix() { | 84 ThreadPosix::~ThreadPosix() { |
85 DCHECK(thread_checker_.CalledOnValidThread()); | 85 RTC_DCHECK(thread_checker_.CalledOnValidThread()); |
86 } | 86 } |
87 | 87 |
88 // TODO(pbos): Make Start void, calling code really doesn't support failures | 88 // TODO(pbos): Make Start void, calling code really doesn't support failures |
89 // here. | 89 // here. |
90 bool ThreadPosix::Start() { | 90 bool ThreadPosix::Start() { |
91 DCHECK(thread_checker_.CalledOnValidThread()); | 91 RTC_DCHECK(thread_checker_.CalledOnValidThread()); |
92 DCHECK(!thread_) << "Thread already started?"; | 92 RTC_DCHECK(!thread_) << "Thread already started?"; |
93 | 93 |
94 ThreadAttributes attr; | 94 ThreadAttributes attr; |
95 // Set the stack stack size to 1M. | 95 // Set the stack stack size to 1M. |
96 pthread_attr_setstacksize(&attr, 1024 * 1024); | 96 pthread_attr_setstacksize(&attr, 1024 * 1024); |
97 CHECK_EQ(0, pthread_create(&thread_, &attr, &StartThread, this)); | 97 RTC_CHECK_EQ(0, pthread_create(&thread_, &attr, &StartThread, this)); |
98 return true; | 98 return true; |
99 } | 99 } |
100 | 100 |
101 bool ThreadPosix::Stop() { | 101 bool ThreadPosix::Stop() { |
102 DCHECK(thread_checker_.CalledOnValidThread()); | 102 RTC_DCHECK(thread_checker_.CalledOnValidThread()); |
103 if (!thread_) | 103 if (!thread_) |
104 return true; | 104 return true; |
105 | 105 |
106 stop_event_.Set(); | 106 stop_event_.Set(); |
107 CHECK_EQ(0, pthread_join(thread_, nullptr)); | 107 RTC_CHECK_EQ(0, pthread_join(thread_, nullptr)); |
108 thread_ = 0; | 108 thread_ = 0; |
109 | 109 |
110 return true; | 110 return true; |
111 } | 111 } |
112 | 112 |
113 bool ThreadPosix::SetPriority(ThreadPriority priority) { | 113 bool ThreadPosix::SetPriority(ThreadPriority priority) { |
114 DCHECK(thread_checker_.CalledOnValidThread()); | 114 RTC_DCHECK(thread_checker_.CalledOnValidThread()); |
115 if (!thread_) | 115 if (!thread_) |
116 return false; | 116 return false; |
117 #if defined(WEBRTC_CHROMIUM_BUILD) && defined(WEBRTC_LINUX) | 117 #if defined(WEBRTC_CHROMIUM_BUILD) && defined(WEBRTC_LINUX) |
118 // TODO(tommi): Switch to the same mechanism as Chromium uses for | 118 // TODO(tommi): Switch to the same mechanism as Chromium uses for |
119 // changing thread priorities. | 119 // changing thread priorities. |
120 return true; | 120 return true; |
121 #else | 121 #else |
122 #ifdef WEBRTC_THREAD_RR | 122 #ifdef WEBRTC_THREAD_RR |
123 const int policy = SCHED_RR; | 123 const int policy = SCHED_RR; |
124 #else | 124 #else |
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157 // It's a requirement that for successful thread creation that the run | 157 // It's a requirement that for successful thread creation that the run |
158 // function be called at least once (see RunFunctionIsCalled unit test), | 158 // function be called at least once (see RunFunctionIsCalled unit test), |
159 // so to fullfill that requirement, we use a |do| loop and not |while|. | 159 // so to fullfill that requirement, we use a |do| loop and not |while|. |
160 do { | 160 do { |
161 if (!run_function_(obj_)) | 161 if (!run_function_(obj_)) |
162 break; | 162 break; |
163 } while (!stop_event_.Wait(0)); | 163 } while (!stop_event_.Wait(0)); |
164 } | 164 } |
165 | 165 |
166 } // namespace webrtc | 166 } // namespace webrtc |
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