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1 // Copyright 2013 the V8 project authors. All rights reserved. | 1 // Copyright 2013 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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32 #include "isolate.h" | 32 #include "isolate.h" |
33 #include "v8threads.h" | 33 #include "v8threads.h" |
34 | 34 |
35 namespace v8 { | 35 namespace v8 { |
36 namespace internal { | 36 namespace internal { |
37 | 37 |
38 MarkingThread::MarkingThread(Isolate* isolate) | 38 MarkingThread::MarkingThread(Isolate* isolate) |
39 : Thread("MarkingThread"), | 39 : Thread("MarkingThread"), |
40 isolate_(isolate), | 40 isolate_(isolate), |
41 heap_(isolate->heap()), | 41 heap_(isolate->heap()), |
42 start_marking_semaphore_(OS::CreateSemaphore(0)), | 42 start_marking_semaphore_(0), |
43 end_marking_semaphore_(OS::CreateSemaphore(0)), | 43 end_marking_semaphore_(0), |
44 stop_semaphore_(OS::CreateSemaphore(0)) { | 44 stop_semaphore_(0) { |
45 NoBarrier_Store(&stop_thread_, static_cast<AtomicWord>(false)); | 45 NoBarrier_Store(&stop_thread_, static_cast<AtomicWord>(false)); |
46 id_ = NoBarrier_AtomicIncrement(&id_counter_, 1); | 46 id_ = NoBarrier_AtomicIncrement(&id_counter_, 1); |
47 } | 47 } |
48 | 48 |
49 | 49 |
50 Atomic32 MarkingThread::id_counter_ = -1; | 50 Atomic32 MarkingThread::id_counter_ = -1; |
51 | 51 |
52 | 52 |
53 void MarkingThread::Run() { | 53 void MarkingThread::Run() { |
54 Isolate::SetIsolateThreadLocals(isolate_, NULL); | 54 Isolate::SetIsolateThreadLocals(isolate_, NULL); |
55 DisallowHeapAllocation no_allocation; | 55 DisallowHeapAllocation no_allocation; |
56 DisallowHandleAllocation no_handles; | 56 DisallowHandleAllocation no_handles; |
57 DisallowHandleDereference no_deref; | 57 DisallowHandleDereference no_deref; |
58 | 58 |
59 while (true) { | 59 while (true) { |
60 start_marking_semaphore_->Wait(); | 60 start_marking_semaphore_.Wait(); |
61 | 61 |
62 if (Acquire_Load(&stop_thread_)) { | 62 if (Acquire_Load(&stop_thread_)) { |
63 stop_semaphore_->Signal(); | 63 stop_semaphore_.Signal(); |
64 return; | 64 return; |
65 } | 65 } |
66 | 66 |
67 end_marking_semaphore_->Signal(); | 67 end_marking_semaphore_.Signal(); |
68 } | 68 } |
69 } | 69 } |
70 | 70 |
71 | 71 |
72 void MarkingThread::Stop() { | 72 void MarkingThread::Stop() { |
73 Release_Store(&stop_thread_, static_cast<AtomicWord>(true)); | 73 Release_Store(&stop_thread_, static_cast<AtomicWord>(true)); |
74 start_marking_semaphore_->Signal(); | 74 start_marking_semaphore_.Signal(); |
75 stop_semaphore_->Wait(); | 75 stop_semaphore_.Wait(); |
76 Join(); | 76 Join(); |
77 } | 77 } |
78 | 78 |
79 | 79 |
80 void MarkingThread::StartMarking() { | 80 void MarkingThread::StartMarking() { |
81 start_marking_semaphore_->Signal(); | 81 start_marking_semaphore_.Signal(); |
82 } | 82 } |
83 | 83 |
84 | 84 |
85 void MarkingThread::WaitForMarkingThread() { | 85 void MarkingThread::WaitForMarkingThread() { |
86 end_marking_semaphore_->Wait(); | 86 end_marking_semaphore_.Wait(); |
87 } | 87 } |
88 | 88 |
89 } } // namespace v8::internal | 89 } } // namespace v8::internal |
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