blob: a0585b3a411cefcac58240f095f90a8b4c2bbf97 (
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
35
36
37
38
39
40
|
// Copyright 2018 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/thread-id.h"
#include "src/base/lazy-instance.h"
#include "src/base/platform/platform.h"
namespace v8 {
namespace internal {
namespace {
DEFINE_LAZY_LEAKY_OBJECT_GETTER(base::Thread::LocalStorageKey, GetThreadIdKey,
base::Thread::CreateThreadLocalKey())
std::atomic<int> next_thread_id{1};
} // namespace
// static
ThreadId ThreadId::TryGetCurrent() {
int thread_id = base::Thread::GetThreadLocalInt(*GetThreadIdKey());
return thread_id == 0 ? Invalid() : ThreadId(thread_id);
}
// static
int ThreadId::GetCurrentThreadId() {
auto key = *GetThreadIdKey();
int thread_id = base::Thread::GetThreadLocalInt(key);
if (thread_id == 0) {
thread_id = next_thread_id.fetch_add(1);
CHECK_LE(1, thread_id);
base::Thread::SetThreadLocalInt(key, thread_id);
}
return thread_id;
}
} // namespace internal
} // namespace v8
|
