folly/folly/system/ThreadId.cpp

/*
 * Copyright (c) Meta Platforms, Inc. and affiliates.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include <folly/system/ThreadId.h>

#include <folly/Likely.h>
#include <folly/portability/PThread.h>
#include <folly/portability/SysSyscall.h>
#include <folly/portability/Unistd.h>
#include <folly/portability/Windows.h>
#include <folly/synchronization/RelaxedAtomic.h>
#include <folly/system/AtFork.h>

namespace folly {

uint64_t getCurrentThreadID() { … }

namespace detail {

uint64_t getOSThreadIDSlow() { … }

} // namespace detail

namespace {

struct CacheState { … };

relaxed_atomic<uint64_t> CacheState::epoch{ … };

CacheState gCacheState;

} // namespace

uint64_t getOSThreadID() { … }

} // namespace folly