52 lines
1.7 KiB
C++
52 lines
1.7 KiB
C++
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// Copyright 2015 Google Inc. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "sleep.h"
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#include <cerrno>
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#include <cstdlib>
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#include <ctime>
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#include "internal_macros.h"
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#ifdef BENCHMARK_OS_WINDOWS
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#include <Windows.h>
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#endif
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namespace benchmark {
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#ifdef BENCHMARK_OS_WINDOWS
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// Window's Sleep takes milliseconds argument.
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void SleepForMilliseconds(int milliseconds) { Sleep(milliseconds); }
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void SleepForSeconds(double seconds) {
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SleepForMilliseconds(static_cast<int>(kNumMillisPerSecond * seconds));
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}
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#else // BENCHMARK_OS_WINDOWS
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void SleepForMicroseconds(int microseconds) {
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struct timespec sleep_time;
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sleep_time.tv_sec = microseconds / kNumMicrosPerSecond;
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sleep_time.tv_nsec = (microseconds % kNumMicrosPerSecond) * kNumNanosPerMicro;
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while (nanosleep(&sleep_time, &sleep_time) != 0 && errno == EINTR)
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; // Ignore signals and wait for the full interval to elapse.
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}
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void SleepForMilliseconds(int milliseconds) {
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SleepForMicroseconds(milliseconds * kNumMicrosPerMilli);
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}
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void SleepForSeconds(double seconds) {
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SleepForMicroseconds(static_cast<int>(seconds * kNumMicrosPerSecond));
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}
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#endif // BENCHMARK_OS_WINDOWS
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} // end namespace benchmark
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