mirror of
https://github.com/facebook/sapling.git
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4c1ad47d20
Summary: Now that we have a standardized StartingGate for benchmarks, use it everywhere we used to use folly::Baton. (Note: this ignores all push blocking failures!) Differential Revision: D13012244 fbshipit-source-id: 5841ab74cfa408e87d021fe5591557e79e677e5c
60 lines
1.6 KiB
C++
60 lines
1.6 KiB
C++
/*
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* Copyright (c) 2018-present, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*
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*/
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#include "eden/fs/utils/ProcessAccessLog.h"
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#include <folly/Benchmark.h>
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#include "eden/fs/benchharness/Bench.h"
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#include "eden/fs/utils/ProcessNameCache.h"
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using namespace facebook::eden;
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/**
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* A high but realistic amount of contention.
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*/
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constexpr size_t kThreadCount = 4;
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BENCHMARK(ProcessAccessLog_repeatedly_add_self, iters) {
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folly::BenchmarkSuspender suspender;
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auto processNameCache = std::make_shared<ProcessNameCache>();
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ProcessAccessLog processAccessLog{processNameCache};
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std::vector<std::thread> threads;
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StartingGate gate{kThreadCount};
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size_t remainingIterations = iters;
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size_t totalIterations = 0;
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for (size_t i = 0; i < kThreadCount; ++i) {
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size_t remainingThreads = kThreadCount - i;
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size_t assignedIterations = remainingIterations / remainingThreads;
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remainingIterations -= assignedIterations;
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totalIterations += assignedIterations;
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threads.emplace_back(
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[&processAccessLog, &gate, assignedIterations, myPid = getpid()] {
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gate.wait();
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for (size_t j = 0; j < assignedIterations; ++j) {
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processAccessLog.recordAccess(myPid);
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}
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});
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}
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CHECK_EQ(totalIterations, iters);
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suspender.dismiss();
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// Now wake the threads.
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gate.waitThenOpen();
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// Wait until they're done.
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for (auto& thread : threads) {
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thread.join();
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}
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}
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