bbc4f4f21d
A side effect of this flag was that we had to always use notify_all when starting a job, instead of notify_one -- in practice, we found experimentally that more calls to notify_one is cheaper than fewer calls to notify_all.
85 lines
2.1 KiB
C++
85 lines
2.1 KiB
C++
/*
|
|
* Copyright (C) 2018 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 "PerformanceCounters.h"
|
|
|
|
#include <utils/JobSystem.h>
|
|
#include <utils/compiler.h>
|
|
|
|
#include <benchmark/benchmark.h>
|
|
|
|
using namespace utils;
|
|
|
|
|
|
static void emptyJob(void*, JobSystem&, JobSystem::Job*) {
|
|
}
|
|
|
|
static void BM_JobSystem(benchmark::State& state) {
|
|
JobSystem js;
|
|
js.adopt();
|
|
|
|
{
|
|
PerformanceCounters pc(state);
|
|
for (auto _ : state) {
|
|
js.runAndWait(js.create(nullptr, &emptyJob));
|
|
}
|
|
}
|
|
state.SetItemsProcessed((int64_t)state.iterations());
|
|
|
|
js.emancipate();
|
|
}
|
|
|
|
static void BM_JobSystemAsChildren4k(benchmark::State& state) {
|
|
JobSystem js;
|
|
js.adopt();
|
|
|
|
{
|
|
PerformanceCounters pc(state);
|
|
for (auto _ : state) {
|
|
auto root = js.create(nullptr, &emptyJob);
|
|
for (size_t i = 0; i < 4095; i++) {
|
|
js.run(js.create(root, &emptyJob));
|
|
}
|
|
js.runAndWait(root);
|
|
}
|
|
}
|
|
state.SetItemsProcessed((int64_t)state.iterations() * 4096);
|
|
|
|
js.emancipate();
|
|
}
|
|
|
|
static void BM_JobSystemParallelFor(benchmark::State& state) {
|
|
JobSystem js;
|
|
js.adopt();
|
|
|
|
{
|
|
PerformanceCounters pc(state);
|
|
for (auto _ : state) {
|
|
auto job = jobs::parallel_for(js, nullptr, 0, 4096,
|
|
[](uint32_t start, uint32_t count) { }, jobs::CountSplitter<1>());
|
|
js.runAndWait(job);
|
|
}
|
|
}
|
|
state.SetItemsProcessed((int64_t)state.iterations() * 4096);
|
|
|
|
js.emancipate();
|
|
}
|
|
|
|
|
|
BENCHMARK(BM_JobSystem);
|
|
BENCHMARK(BM_JobSystemAsChildren4k);
|
|
BENCHMARK(BM_JobSystemParallelFor);
|