46 lines
1.4 KiB
C++
46 lines
1.4 KiB
C++
// Copyright 2016 The Chromium 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 "base/task/thread_pool/task.h"
|
|
|
|
#include <utility>
|
|
|
|
#include "base/atomic_sequence_num.h"
|
|
|
|
namespace base {
|
|
namespace internal {
|
|
|
|
namespace {
|
|
|
|
AtomicSequenceNumber g_sequence_nums_for_tracing;
|
|
|
|
} // namespace
|
|
|
|
Task::Task() = default;
|
|
|
|
Task::Task(const Location& posted_from, OnceClosure task, TimeDelta delay)
|
|
: PendingTask(posted_from,
|
|
std::move(task),
|
|
delay.is_zero() ? TimeTicks() : TimeTicks::Now() + delay,
|
|
Nestable::kNonNestable) {
|
|
// ThreadPoolImpl doesn't use |sequence_num| but tracing (toplevel.flow)
|
|
// relies on it being unique. While this subtle dependency is a bit
|
|
// overreaching, ThreadPoolImpl is the only task system that doesn't use
|
|
// |sequence_num| and the dependent code rarely changes so this isn't worth a
|
|
// big change and faking it here isn't too bad for now (posting tasks is full
|
|
// of atomic ops already).
|
|
this->sequence_num = g_sequence_nums_for_tracing.GetNext();
|
|
}
|
|
|
|
// This should be "= default but MSVC has trouble with "noexcept = default" in
|
|
// this case.
|
|
Task::Task(Task&& other) noexcept : PendingTask(std::move(other)) {}
|
|
|
|
Task::~Task() = default;
|
|
|
|
Task& Task::operator=(Task&& other) = default;
|
|
|
|
} // namespace internal
|
|
} // namespace base
|