blob: c6f6a51f4f8aa61c04f6145e197065186a52c8d3 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
|
// Copyright 2020 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "src/tasks/operations-barrier.h"
namespace v8 {
namespace internal {
OperationsBarrier::Token OperationsBarrier::TryLock() {
base::MutexGuard guard(&mutex_);
if (cancelled_) return {};
++operations_count_;
return Token(this);
}
void OperationsBarrier::CancelAndWait() {
base::MutexGuard guard(&mutex_);
DCHECK(!cancelled_);
cancelled_ = true;
while (operations_count_ > 0) {
release_condition_.Wait(&mutex_);
}
}
void OperationsBarrier::Release() {
base::MutexGuard guard(&mutex_);
if (--operations_count_ == 0 && cancelled_) {
release_condition_.NotifyOne();
}
}
} // namespace internal
} // namespace v8
|
