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Side by Side Diff: third_party/WebKit/Source/platform/heap/SafePoint.cpp

Issue 2384213003: reflow comments in platform/heap (Closed)
Patch Set: Created 4 years, 2 months ago
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1 // Copyright 2015 The Chromium Authors. All rights reserved. 1 // Copyright 2015 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 #include "platform/heap/SafePoint.h" 5 #include "platform/heap/SafePoint.h"
6 6
7 #include "platform/heap/Heap.h" 7 #include "platform/heap/Heap.h"
8 #include "wtf/Atomics.h" 8 #include "wtf/Atomics.h"
9 #include "wtf/CurrentTime.h" 9 #include "wtf/CurrentTime.h"
10 10
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43 if (state == current) 43 if (state == current)
44 continue; 44 continue;
45 45
46 for (auto& interruptor : state->interruptors()) 46 for (auto& interruptor : state->interruptors())
47 interruptor->requestInterrupt(); 47 interruptor->requestInterrupt();
48 } 48 }
49 49
50 while (acquireLoad(&m_unparkedThreadCount) > 0) { 50 while (acquireLoad(&m_unparkedThreadCount) > 0) {
51 double expirationTime = currentTime() + lockingTimeout(); 51 double expirationTime = currentTime() + lockingTimeout();
52 if (!m_parked.timedWait(m_mutex, expirationTime)) { 52 if (!m_parked.timedWait(m_mutex, expirationTime)) {
53 // One of the other threads did not return to a safepoint within the maxim um 53 // One of the other threads did not return to a safepoint within the
54 // time we allow for threads to be parked. Abandon the GC and resume the 54 // maximum time we allow for threads to be parked. Abandon the GC and
55 // currently parked threads. 55 // resume the currently parked threads.
56 resumeOthers(true); 56 resumeOthers(true);
57 return false; 57 return false;
58 } 58 }
59 } 59 }
60 return true; 60 return true;
61 } 61 }
62 62
63 void SafePointBarrier::resumeOthers(bool barrierLocked) { 63 void SafePointBarrier::resumeOthers(bool barrierLocked) {
64 ThreadState* current = ThreadState::current(); 64 ThreadState* current = ThreadState::current();
65 const ThreadStateSet& threads = current->heap().threads(); 65 const ThreadStateSet& threads = current->heap().threads();
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119 intptr_t* stackEnd) { 119 intptr_t* stackEnd) {
120 state->recordStackEnd(stackEnd); 120 state->recordStackEnd(stackEnd);
121 state->copyStackUntilSafePointScope(); 121 state->copyStackUntilSafePointScope();
122 if (!atomicDecrement(&m_unparkedThreadCount)) { 122 if (!atomicDecrement(&m_unparkedThreadCount)) {
123 MutexLocker locker(m_mutex); 123 MutexLocker locker(m_mutex);
124 m_parked.signal(); // Safe point reached. 124 m_parked.signal(); // Safe point reached.
125 } 125 }
126 } 126 }
127 127
128 } // namespace blink 128 } // namespace blink
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