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Issue 316133002: Move atomic ops and related files to base library (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: updates Created 6 years, 6 months ago
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1 // Copyright 2012 the V8 project authors. All rights reserved. 1 // Copyright 2012 the V8 project 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 "src/sweeper-thread.h" 5 #include "src/sweeper-thread.h"
6 6
7 #include "src/v8.h" 7 #include "src/v8.h"
8 8
9 #include "src/isolate.h" 9 #include "src/isolate.h"
10 #include "src/v8threads.h" 10 #include "src/v8threads.h"
11 11
12 namespace v8 { 12 namespace v8 {
13 namespace internal { 13 namespace internal {
14 14
15 static const int kSweeperThreadStackSize = 64 * KB; 15 static const int kSweeperThreadStackSize = 64 * KB;
16 16
17 SweeperThread::SweeperThread(Isolate* isolate) 17 SweeperThread::SweeperThread(Isolate* isolate)
18 : Thread(Thread::Options("v8:SweeperThread", kSweeperThreadStackSize)), 18 : Thread(Thread::Options("v8:SweeperThread", kSweeperThreadStackSize)),
19 isolate_(isolate), 19 isolate_(isolate),
20 heap_(isolate->heap()), 20 heap_(isolate->heap()),
21 collector_(heap_->mark_compact_collector()), 21 collector_(heap_->mark_compact_collector()),
22 start_sweeping_semaphore_(0), 22 start_sweeping_semaphore_(0),
23 end_sweeping_semaphore_(0), 23 end_sweeping_semaphore_(0),
24 stop_semaphore_(0) { 24 stop_semaphore_(0) {
25 ASSERT(!FLAG_job_based_sweeping); 25 ASSERT(!FLAG_job_based_sweeping);
26 NoBarrier_Store(&stop_thread_, static_cast<AtomicWord>(false)); 26 base::NoBarrier_Store(&stop_thread_, static_cast<base::AtomicWord>(false));
27 } 27 }
28 28
29 29
30 void SweeperThread::Run() { 30 void SweeperThread::Run() {
31 Isolate::SetIsolateThreadLocals(isolate_, NULL); 31 Isolate::SetIsolateThreadLocals(isolate_, NULL);
32 DisallowHeapAllocation no_allocation; 32 DisallowHeapAllocation no_allocation;
33 DisallowHandleAllocation no_handles; 33 DisallowHandleAllocation no_handles;
34 DisallowHandleDereference no_deref; 34 DisallowHandleDereference no_deref;
35 35
36 while (true) { 36 while (true) {
37 start_sweeping_semaphore_.Wait(); 37 start_sweeping_semaphore_.Wait();
38 38
39 if (Acquire_Load(&stop_thread_)) { 39 if (base::Acquire_Load(&stop_thread_)) {
40 stop_semaphore_.Signal(); 40 stop_semaphore_.Signal();
41 return; 41 return;
42 } 42 }
43 43
44 collector_->SweepInParallel(heap_->old_data_space()); 44 collector_->SweepInParallel(heap_->old_data_space());
45 collector_->SweepInParallel(heap_->old_pointer_space()); 45 collector_->SweepInParallel(heap_->old_pointer_space());
46 end_sweeping_semaphore_.Signal(); 46 end_sweeping_semaphore_.Signal();
47 } 47 }
48 } 48 }
49 49
50 50
51 void SweeperThread::Stop() { 51 void SweeperThread::Stop() {
52 Release_Store(&stop_thread_, static_cast<AtomicWord>(true)); 52 base::Release_Store(&stop_thread_, static_cast<base::AtomicWord>(true));
53 start_sweeping_semaphore_.Signal(); 53 start_sweeping_semaphore_.Signal();
54 stop_semaphore_.Wait(); 54 stop_semaphore_.Wait();
55 Join(); 55 Join();
56 } 56 }
57 57
58 58
59 void SweeperThread::StartSweeping() { 59 void SweeperThread::StartSweeping() {
60 start_sweeping_semaphore_.Signal(); 60 start_sweeping_semaphore_.Signal();
61 } 61 }
62 62
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77 77
78 int SweeperThread::NumberOfThreads(int max_available) { 78 int SweeperThread::NumberOfThreads(int max_available) {
79 if (!FLAG_concurrent_sweeping && !FLAG_parallel_sweeping) return 0; 79 if (!FLAG_concurrent_sweeping && !FLAG_parallel_sweeping) return 0;
80 if (FLAG_sweeper_threads > 0) return FLAG_sweeper_threads; 80 if (FLAG_sweeper_threads > 0) return FLAG_sweeper_threads;
81 if (FLAG_concurrent_sweeping) return max_available - 1; 81 if (FLAG_concurrent_sweeping) return max_available - 1;
82 ASSERT(FLAG_parallel_sweeping); 82 ASSERT(FLAG_parallel_sweeping);
83 return max_available; 83 return max_available;
84 } 84 }
85 85
86 } } // namespace v8::internal 86 } } // namespace v8::internal
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