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/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.
*/
#ifndef ORC_UTILS_HH
#define ORC_UTILS_HH
#include <atomic>
#include <chrono>
namespace orc {
class AutoStopwatch {
std::chrono::high_resolution_clock::time_point start;
std::atomic<uint64_t>* latencyUs;
std::atomic<uint64_t>* count;
bool minus;
public:
AutoStopwatch(std::atomic<uint64_t>* _latencyUs, std::atomic<uint64_t>* _count,
bool _minus = false)
: latencyUs(_latencyUs), count(_count), minus(_minus) {
if (latencyUs) {
start = std::chrono::high_resolution_clock::now();
}
}
~AutoStopwatch() {
if (latencyUs) {
std::chrono::microseconds elapsedTime =
std::chrono::duration_cast<std::chrono::microseconds>(
std::chrono::high_resolution_clock::now() - start);
if (!minus) {
latencyUs->fetch_add(static_cast<uint64_t>(elapsedTime.count()));
} else {
latencyUs->fetch_sub(static_cast<uint64_t>(elapsedTime.count()));
}
}
if (count) {
count->fetch_add(1);
}
}
};
#if ENABLE_METRICS
#define SCOPED_STOPWATCH(METRICS_PTR, LATENCY_VAR, COUNT_VAR) \
AutoStopwatch measure((METRICS_PTR == nullptr ? nullptr : &METRICS_PTR->LATENCY_VAR), \
(METRICS_PTR == nullptr ? nullptr : &METRICS_PTR->COUNT_VAR))
#define SCOPED_MINUS_STOPWATCH(METRICS_PTR, LATENCY_VAR) \
AutoStopwatch measure((METRICS_PTR == nullptr ? nullptr : &METRICS_PTR->LATENCY_VAR), nullptr, \
true)
#else
#define SCOPED_STOPWATCH(METRICS_PTR, LATENCY_VAR, COUNT_VAR)
#define SCOPED_MINUS_STOPWATCH(METRICS_PTR, LATENCY_VAR)
#endif
} // namespace orc
#endif
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