blob: e5a0ab1af5821ad7feb7616728a7006b221b23d7 [file] [log] [blame]
// 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_scheduler/scheduler_worker_stack.h"
#include <algorithm>
#include "base/logging.h"
#include "base/stl_util.h"
namespace base {
namespace internal {
SchedulerWorkerStack::SchedulerWorkerStack() = default;
SchedulerWorkerStack::~SchedulerWorkerStack() = default;
void SchedulerWorkerStack::Push(SchedulerWorker* worker) {
DCHECK(!Contains(worker)) << "SchedulerWorker already on stack";
stack_.push_back(worker);
}
SchedulerWorker* SchedulerWorkerStack::Pop() {
if (IsEmpty())
return nullptr;
SchedulerWorker* const worker = stack_.back();
stack_.pop_back();
return worker;
}
SchedulerWorker* SchedulerWorkerStack::Peek() const {
if (IsEmpty())
return nullptr;
return stack_.back();
}
bool SchedulerWorkerStack::Contains(const SchedulerWorker* worker) const {
return ContainsValue(stack_, worker);
}
void SchedulerWorkerStack::Remove(const SchedulerWorker* worker) {
auto it = std::find(stack_.begin(), stack_.end(), worker);
if (it != stack_.end())
stack_.erase(it);
}
} // namespace internal
} // namespace base