103 lines
3.3 KiB
C++
103 lines
3.3 KiB
C++
// Copyright (c) 2018 Google LLC.
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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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#if defined(SPIRV_TIMER_ENABLED)
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#include "source/util/timer.h"
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#include <sys/resource.h>
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#include <sys/time.h>
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#include <iomanip>
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#include <iostream>
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#include <string>
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namespace spvtools {
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namespace utils {
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void PrintTimerDescription(std::ostream* out, bool measure_mem_usage) {
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if (out) {
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*out << std::setw(30) << "PASS name" << std::setw(12) << "CPU time"
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<< std::setw(12) << "WALL time" << std::setw(12) << "USR time"
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<< std::setw(12) << "SYS time";
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if (measure_mem_usage) {
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*out << std::setw(12) << "RSS delta" << std::setw(16) << "PGFault delta";
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}
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*out << std::endl;
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}
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}
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// Do not change the order of invoking system calls. We want to make CPU/Wall
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// time correct as much as possible. Calling functions to get CPU/Wall time must
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// closely surround the target code of measuring.
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void Timer::Start() {
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if (report_stream_) {
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if (getrusage(RUSAGE_SELF, &usage_before_) == -1)
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usage_status_ |= kGetrusageFailed;
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if (clock_gettime(CLOCK_MONOTONIC, &wall_before_) == -1)
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usage_status_ |= kClockGettimeWalltimeFailed;
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if (clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &cpu_before_) == -1)
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usage_status_ |= kClockGettimeCPUtimeFailed;
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}
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}
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// The order of invoking system calls is important with the same reason as
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// Timer::Start().
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void Timer::Stop() {
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if (report_stream_ && usage_status_ == kSucceeded) {
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if (clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &cpu_after_) == -1)
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usage_status_ |= kClockGettimeCPUtimeFailed;
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if (clock_gettime(CLOCK_MONOTONIC, &wall_after_) == -1)
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usage_status_ |= kClockGettimeWalltimeFailed;
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if (getrusage(RUSAGE_SELF, &usage_after_) == -1)
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usage_status_ = kGetrusageFailed;
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}
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}
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void Timer::Report(const char* tag) {
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if (!report_stream_) return;
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report_stream_->precision(2);
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*report_stream_ << std::fixed << std::setw(30) << tag;
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if (usage_status_ & kClockGettimeCPUtimeFailed)
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*report_stream_ << std::setw(12) << "Failed";
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else
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*report_stream_ << std::setw(12) << CPUTime();
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if (usage_status_ & kClockGettimeWalltimeFailed)
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*report_stream_ << std::setw(12) << "Failed";
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else
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*report_stream_ << std::setw(12) << WallTime();
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if (usage_status_ & kGetrusageFailed) {
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*report_stream_ << std::setw(12) << "Failed" << std::setw(12) << "Failed";
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if (measure_mem_usage_) {
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*report_stream_ << std::setw(12) << "Failed" << std::setw(12) << "Failed";
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}
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} else {
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*report_stream_ << std::setw(12) << UserTime() << std::setw(12)
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<< SystemTime();
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if (measure_mem_usage_) {
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*report_stream_ << std::fixed << std::setw(12) << RSS() << std::setw(16)
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<< PageFault();
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}
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}
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*report_stream_ << std::endl;
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}
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} // namespace utils
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} // namespace spvtools
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#endif // defined(SPIRV_TIMER_ENABLED)
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