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/*
* Copyright (C) 2016 The Android Open Source Project
*
* 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 "cpu_collector.h"
#include <unistd.h>
#include <atomic>
#include <thread>
namespace profiler {
CpuCollector::~CpuCollector() {
if (is_running_.load()) {
Stop();
}
}
void CpuCollector::Start() {
if (!is_running_.exchange(true)) {
sampler_thread_ = std::thread(&CpuCollector::Collect, this);
}
}
void CpuCollector::Stop() {
if (is_running_.exchange(false)) {
sampler_thread_.join();
}
}
void CpuCollector::Collect() {
while (is_running_.load()) {
sampler_.Sample();
usleep(sampling_interval_in_us_);
}
}
} // namespace profiler
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