chromium/base/task/single_thread_task_runner.cc

// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "base/task/single_thread_task_runner.h"

#include <memory>
#include <utility>

#include "base/check.h"
#include "base/check_op.h"
#include "base/compiler_specific.h"
#include "base/dcheck_is_on.h"
#include "base/functional/bind.h"
#include "base/lazy_instance.h"
#include "base/run_loop.h"
#include "third_party/abseil-cpp/absl/base/attributes.h"

namespace base {

namespace {

ABSL_CONST_INIT thread_local SingleThreadTaskRunner::CurrentDefaultHandle*
    current_default_handle = …;

// This function can be removed, and the calls below replaced with direct
// variable accesses, once the MSAN workaround is not necessary.
SingleThreadTaskRunner::CurrentDefaultHandle* GetCurrentDefaultHandle() { … }

}  // namespace

bool SingleThreadTaskRunner::BelongsToCurrentThread() const { … }

// static
const scoped_refptr<SingleThreadTaskRunner>&
SingleThreadTaskRunner::GetCurrentDefault() { … }

// static
bool SingleThreadTaskRunner::HasCurrentDefault() { … }

SingleThreadTaskRunner::CurrentDefaultHandle::CurrentDefaultHandle(
    scoped_refptr<SingleThreadTaskRunner> task_runner)
    : … { … }

SingleThreadTaskRunner::CurrentDefaultHandle::~CurrentDefaultHandle() { … }

SingleThreadTaskRunner::CurrentDefaultHandle::CurrentDefaultHandle(
    scoped_refptr<SingleThreadTaskRunner> task_runner,
    MayAlreadyExist)
    : … { … }

SingleThreadTaskRunner::CurrentHandleOverrideForTesting::
    CurrentHandleOverrideForTesting(
        scoped_refptr<SingleThreadTaskRunner> overriding_task_runner)
    : … { … }

SingleThreadTaskRunner::CurrentHandleOverrideForTesting::
    ~CurrentHandleOverrideForTesting() = default;

}  // namespace base