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Adding smart_ptr benchmark

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Initial draft here:
https://reviews.llvm.org/D22470
... though this is Eric Fiselier's rewrite to fit in with Google
Benchmark.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@277373 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Ben Craig
2016-08-01 19:56:39 +00:00
parent d836c0e3cb
commit c6669cf33b
1 changed files with 42 additions and 0 deletions
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42
benchmarks/util_smartptr.bench.cpp Normal file
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//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include <memory>
#include "benchmark/benchmark_api.h"
static void BM_SharedPtrCreateDestroy(benchmark::State& st) {
while (st.KeepRunning()) {
auto sp = std::make_shared<int>(42);
benchmark::DoNotOptimize(sp.get());
}
}
BENCHMARK(BM_SharedPtrCreateDestroy);
static void BM_SharedPtrIncDecRef(benchmark::State& st) {
auto sp = std::make_shared<int>(42);
benchmark::DoNotOptimize(sp.get());
while (st.KeepRunning()) {
std::shared_ptr<int> sp2(sp);
benchmark::ClobberMemory();
}
}
BENCHMARK(BM_SharedPtrIncDecRef);
static void BM_WeakPtrIncDecRef(benchmark::State& st) {
auto sp = std::make_shared<int>(42);
benchmark::DoNotOptimize(sp.get());
while (st.KeepRunning()) {
std::weak_ptr<int> wp(sp);
benchmark::ClobberMemory();
}
}
BENCHMARK(BM_WeakPtrIncDecRef);
BENCHMARK_MAIN()