Add new prevector benchmarks.
This prepares for a series of two additional commits which optimize prevector performance.
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4 changed files with 88 additions and 37 deletions
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@ -27,7 +27,7 @@ bench_bench_bitcoin_SOURCES = \
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bench/lockedpool.cpp \
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bench/perf.cpp \
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bench/perf.h \
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bench/prevector_destructor.cpp
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bench/prevector.cpp
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nodist_bench_bench_bitcoin_SOURCES = $(GENERATED_BENCH_FILES)
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77
src/bench/prevector.cpp
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77
src/bench/prevector.cpp
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@ -0,0 +1,77 @@
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// Copyright (c) 2015-2017 The Bitcoin Core developers
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// Distributed under the MIT software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#include <compat.h>
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#include <prevector.h>
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#include <bench/bench.h>
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struct nontrivial_t {
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int x;
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nontrivial_t() :x(-1) {}
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};
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static_assert(!IS_TRIVIALLY_CONSTRUCTIBLE<nontrivial_t>::value,
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"expected nontrivial_t to not be trivially constructible");
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typedef unsigned char trivial_t;
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static_assert(IS_TRIVIALLY_CONSTRUCTIBLE<trivial_t>::value,
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"expected trivial_t to be trivially constructible");
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template <typename T>
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static void PrevectorDestructor(benchmark::State& state)
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{
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while (state.KeepRunning()) {
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for (auto x = 0; x < 1000; ++x) {
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prevector<28, T> t0;
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prevector<28, T> t1;
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t0.resize(28);
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t1.resize(29);
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}
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}
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}
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template <typename T>
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static void PrevectorClear(benchmark::State& state)
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{
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while (state.KeepRunning()) {
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for (auto x = 0; x < 1000; ++x) {
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prevector<28, T> t0;
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prevector<28, T> t1;
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t0.resize(28);
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t0.clear();
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t1.resize(29);
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t0.clear();
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}
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}
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}
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template <typename T>
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void PrevectorResize(benchmark::State& state)
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{
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while (state.KeepRunning()) {
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prevector<28, T> t0;
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prevector<28, T> t1;
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for (auto x = 0; x < 1000; ++x) {
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t0.resize(28);
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t0.resize(0);
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t1.resize(29);
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t1.resize(0);
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}
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}
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}
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#define PREVECTOR_TEST(name, nontrivops, trivops) \
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static void Prevector ## name ## Nontrivial(benchmark::State& state) { \
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PrevectorResize<nontrivial_t>(state); \
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} \
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BENCHMARK(Prevector ## name ## Nontrivial, nontrivops); \
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static void Prevector ## name ## Trivial(benchmark::State& state) { \
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PrevectorResize<trivial_t>(state); \
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} \
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BENCHMARK(Prevector ## name ## Trivial, trivops);
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PREVECTOR_TEST(Clear, 28300, 88600)
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PREVECTOR_TEST(Destructor, 28800, 88900)
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PREVECTOR_TEST(Resize, 28900, 90300)
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@ -1,36 +0,0 @@
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// Copyright (c) 2015-2017 The Bitcoin Core developers
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// Distributed under the MIT software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#include <bench/bench.h>
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#include <prevector.h>
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static void PrevectorDestructor(benchmark::State& state)
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{
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while (state.KeepRunning()) {
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for (auto x = 0; x < 1000; ++x) {
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prevector<28, unsigned char> t0;
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prevector<28, unsigned char> t1;
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t0.resize(28);
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t1.resize(29);
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}
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}
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}
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static void PrevectorClear(benchmark::State& state)
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{
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while (state.KeepRunning()) {
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for (auto x = 0; x < 1000; ++x) {
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prevector<28, unsigned char> t0;
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prevector<28, unsigned char> t1;
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t0.resize(28);
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t0.clear();
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t1.resize(29);
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t0.clear();
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}
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}
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}
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BENCHMARK(PrevectorDestructor, 5700);
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BENCHMARK(PrevectorClear, 5600);
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10
src/compat.h
10
src/compat.h
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@ -10,6 +10,16 @@
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#include <config/bitcoin-config.h>
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#endif
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#include <type_traits>
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// GCC 4.8 is missing some C++11 type_traits,
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// https://www.gnu.org/software/gcc/gcc-5/changes.html
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#if defined(__GNUC__) && __GNUC__ < 5
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#define IS_TRIVIALLY_CONSTRUCTIBLE std::is_trivial
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#else
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#define IS_TRIVIALLY_CONSTRUCTIBLE std::is_trivially_constructible
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#endif
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#ifdef WIN32
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#ifdef _WIN32_WINNT
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#undef _WIN32_WINNT
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