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-rw-r--r--src/Makefile.bench.include2
-rw-r--r--src/bench/prevector.cpp77
-rw-r--r--src/bench/prevector_destructor.cpp36
-rw-r--r--src/compat.h10
4 files changed, 88 insertions, 37 deletions
diff --git a/src/Makefile.bench.include b/src/Makefile.bench.include
index 13c27299f8..748c5b7887 100644
--- a/src/Makefile.bench.include
+++ b/src/Makefile.bench.include
@@ -27,7 +27,7 @@ bench_bench_bitcoin_SOURCES = \
bench/lockedpool.cpp \
bench/perf.cpp \
bench/perf.h \
- bench/prevector_destructor.cpp
+ bench/prevector.cpp
nodist_bench_bench_bitcoin_SOURCES = $(GENERATED_BENCH_FILES)
diff --git a/src/bench/prevector.cpp b/src/bench/prevector.cpp
new file mode 100644
index 0000000000..d0f28d1a3e
--- /dev/null
+++ b/src/bench/prevector.cpp
@@ -0,0 +1,77 @@
+// Copyright (c) 2015-2017 The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#include <compat.h>
+#include <prevector.h>
+
+#include <bench/bench.h>
+
+struct nontrivial_t {
+ int x;
+ nontrivial_t() :x(-1) {}
+};
+static_assert(!IS_TRIVIALLY_CONSTRUCTIBLE<nontrivial_t>::value,
+ "expected nontrivial_t to not be trivially constructible");
+
+typedef unsigned char trivial_t;
+static_assert(IS_TRIVIALLY_CONSTRUCTIBLE<trivial_t>::value,
+ "expected trivial_t to be trivially constructible");
+
+template <typename T>
+static void PrevectorDestructor(benchmark::State& state)
+{
+ while (state.KeepRunning()) {
+ for (auto x = 0; x < 1000; ++x) {
+ prevector<28, T> t0;
+ prevector<28, T> t1;
+ t0.resize(28);
+ t1.resize(29);
+ }
+ }
+}
+
+template <typename T>
+static void PrevectorClear(benchmark::State& state)
+{
+
+ while (state.KeepRunning()) {
+ for (auto x = 0; x < 1000; ++x) {
+ prevector<28, T> t0;
+ prevector<28, T> t1;
+ t0.resize(28);
+ t0.clear();
+ t1.resize(29);
+ t0.clear();
+ }
+ }
+}
+
+template <typename T>
+void PrevectorResize(benchmark::State& state)
+{
+ while (state.KeepRunning()) {
+ prevector<28, T> t0;
+ prevector<28, T> t1;
+ for (auto x = 0; x < 1000; ++x) {
+ t0.resize(28);
+ t0.resize(0);
+ t1.resize(29);
+ t1.resize(0);
+ }
+ }
+}
+
+#define PREVECTOR_TEST(name, nontrivops, trivops) \
+ static void Prevector ## name ## Nontrivial(benchmark::State& state) { \
+ PrevectorResize<nontrivial_t>(state); \
+ } \
+ BENCHMARK(Prevector ## name ## Nontrivial, nontrivops); \
+ static void Prevector ## name ## Trivial(benchmark::State& state) { \
+ PrevectorResize<trivial_t>(state); \
+ } \
+ BENCHMARK(Prevector ## name ## Trivial, trivops);
+
+PREVECTOR_TEST(Clear, 28300, 88600)
+PREVECTOR_TEST(Destructor, 28800, 88900)
+PREVECTOR_TEST(Resize, 28900, 90300)
diff --git a/src/bench/prevector_destructor.cpp b/src/bench/prevector_destructor.cpp
deleted file mode 100644
index 39d0ee5eb1..0000000000
--- a/src/bench/prevector_destructor.cpp
+++ /dev/null
@@ -1,36 +0,0 @@
-// Copyright (c) 2015-2017 The Bitcoin Core developers
-// Distributed under the MIT software license, see the accompanying
-// file COPYING or http://www.opensource.org/licenses/mit-license.php.
-
-#include <bench/bench.h>
-#include <prevector.h>
-
-static void PrevectorDestructor(benchmark::State& state)
-{
- while (state.KeepRunning()) {
- for (auto x = 0; x < 1000; ++x) {
- prevector<28, unsigned char> t0;
- prevector<28, unsigned char> t1;
- t0.resize(28);
- t1.resize(29);
- }
- }
-}
-
-static void PrevectorClear(benchmark::State& state)
-{
-
- while (state.KeepRunning()) {
- for (auto x = 0; x < 1000; ++x) {
- prevector<28, unsigned char> t0;
- prevector<28, unsigned char> t1;
- t0.resize(28);
- t0.clear();
- t1.resize(29);
- t0.clear();
- }
- }
-}
-
-BENCHMARK(PrevectorDestructor, 5700);
-BENCHMARK(PrevectorClear, 5600);
diff --git a/src/compat.h b/src/compat.h
index aae84b1181..8a0f901304 100644
--- a/src/compat.h
+++ b/src/compat.h
@@ -10,6 +10,16 @@
#include <config/bitcoin-config.h>
#endif
+#include <type_traits>
+
+// GCC 4.8 is missing some C++11 type_traits,
+// https://www.gnu.org/software/gcc/gcc-5/changes.html
+#if defined(__GNUC__) && __GNUC__ < 5
+#define IS_TRIVIALLY_CONSTRUCTIBLE std::is_trivial
+#else
+#define IS_TRIVIALLY_CONSTRUCTIBLE std::is_trivially_constructible
+#endif
+
#ifdef WIN32
#ifdef _WIN32_WINNT
#undef _WIN32_WINNT