OLD | NEW |
1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 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 |
(...skipping 28 matching lines...) Expand all Loading... |
39 | 39 |
40 SweeperThread::SweeperThread(Isolate* isolate) | 40 SweeperThread::SweeperThread(Isolate* isolate) |
41 : Thread(Thread::Options("v8:SweeperThread", kSweeperThreadStackSize)), | 41 : Thread(Thread::Options("v8:SweeperThread", kSweeperThreadStackSize)), |
42 isolate_(isolate), | 42 isolate_(isolate), |
43 heap_(isolate->heap()), | 43 heap_(isolate->heap()), |
44 collector_(heap_->mark_compact_collector()), | 44 collector_(heap_->mark_compact_collector()), |
45 start_sweeping_semaphore_(0), | 45 start_sweeping_semaphore_(0), |
46 end_sweeping_semaphore_(0), | 46 end_sweeping_semaphore_(0), |
47 stop_semaphore_(0), | 47 stop_semaphore_(0), |
48 free_list_old_data_space_(heap_->paged_space(OLD_DATA_SPACE)), | 48 free_list_old_data_space_(heap_->paged_space(OLD_DATA_SPACE)), |
49 free_list_old_pointer_space_(heap_->paged_space(OLD_POINTER_SPACE)), | 49 free_list_old_pointer_space_(heap_->paged_space(OLD_POINTER_SPACE)) { |
50 private_free_list_old_data_space_(heap_->paged_space(OLD_DATA_SPACE)), | |
51 private_free_list_old_pointer_space_( | |
52 heap_->paged_space(OLD_POINTER_SPACE)) { | |
53 NoBarrier_Store(&stop_thread_, static_cast<AtomicWord>(false)); | 50 NoBarrier_Store(&stop_thread_, static_cast<AtomicWord>(false)); |
54 } | 51 } |
55 | 52 |
56 | 53 |
57 void SweeperThread::Run() { | 54 void SweeperThread::Run() { |
58 Isolate::SetIsolateThreadLocals(isolate_, NULL); | 55 Isolate::SetIsolateThreadLocals(isolate_, NULL); |
59 DisallowHeapAllocation no_allocation; | 56 DisallowHeapAllocation no_allocation; |
60 DisallowHandleAllocation no_handles; | 57 DisallowHandleAllocation no_handles; |
61 DisallowHandleDereference no_deref; | 58 DisallowHandleDereference no_deref; |
62 | 59 |
63 while (true) { | 60 while (true) { |
64 start_sweeping_semaphore_.Wait(); | 61 start_sweeping_semaphore_.Wait(); |
65 | 62 |
66 if (Acquire_Load(&stop_thread_)) { | 63 if (Acquire_Load(&stop_thread_)) { |
67 stop_semaphore_.Signal(); | 64 stop_semaphore_.Signal(); |
68 return; | 65 return; |
69 } | 66 } |
70 | 67 |
71 collector_->SweepInParallel(heap_->old_data_space(), | 68 collector_->SweepInParallel(heap_->old_data_space(), |
72 &private_free_list_old_data_space_, | |
73 &free_list_old_data_space_); | 69 &free_list_old_data_space_); |
74 collector_->SweepInParallel(heap_->old_pointer_space(), | 70 collector_->SweepInParallel(heap_->old_pointer_space(), |
75 &private_free_list_old_pointer_space_, | |
76 &free_list_old_pointer_space_); | 71 &free_list_old_pointer_space_); |
77 end_sweeping_semaphore_.Signal(); | 72 end_sweeping_semaphore_.Signal(); |
78 } | 73 } |
79 } | 74 } |
80 | 75 |
81 | 76 |
82 intptr_t SweeperThread::StealMemory(PagedSpace* space) { | 77 intptr_t SweeperThread::StealMemory(PagedSpace* space) { |
83 if (space->identity() == OLD_POINTER_SPACE) { | 78 if (space->identity() == OLD_POINTER_SPACE) { |
84 return space->free_list()->Concatenate(&free_list_old_pointer_space_); | 79 return space->free_list()->Concatenate(&free_list_old_pointer_space_); |
85 } else if (space->identity() == OLD_DATA_SPACE) { | 80 } else if (space->identity() == OLD_DATA_SPACE) { |
(...skipping 23 matching lines...) Expand all Loading... |
109 | 104 |
110 int SweeperThread::NumberOfThreads(int max_available) { | 105 int SweeperThread::NumberOfThreads(int max_available) { |
111 if (!FLAG_concurrent_sweeping && !FLAG_parallel_sweeping) return 0; | 106 if (!FLAG_concurrent_sweeping && !FLAG_parallel_sweeping) return 0; |
112 if (FLAG_sweeper_threads > 0) return FLAG_sweeper_threads; | 107 if (FLAG_sweeper_threads > 0) return FLAG_sweeper_threads; |
113 if (FLAG_concurrent_sweeping) return max_available - 1; | 108 if (FLAG_concurrent_sweeping) return max_available - 1; |
114 ASSERT(FLAG_parallel_sweeping); | 109 ASSERT(FLAG_parallel_sweeping); |
115 return max_available; | 110 return max_available; |
116 } | 111 } |
117 | 112 |
118 } } // namespace v8::internal | 113 } } // namespace v8::internal |
OLD | NEW |