diff options
| -rw-r--r-- | src/Makefile.bench.include | 3 | ||||
| -rw-r--r-- | src/bench/prevector_destructor.cpp | 36 | ||||
| -rw-r--r-- | src/prevector.h | 17 |
3 files changed, 50 insertions, 6 deletions
diff --git a/src/Makefile.bench.include b/src/Makefile.bench.include index 8c699c2f8c..3bcecab596 100644 --- a/src/Makefile.bench.include +++ b/src/Makefile.bench.include @@ -25,7 +25,8 @@ bench_bench_bitcoin_SOURCES = \ bench/base58.cpp \ bench/lockedpool.cpp \ bench/perf.cpp \ - bench/perf.h + bench/perf.h \ + bench/prevector_destructor.cpp nodist_bench_bench_bitcoin_SOURCES = $(GENERATED_TEST_FILES) diff --git a/src/bench/prevector_destructor.cpp b/src/bench/prevector_destructor.cpp new file mode 100644 index 0000000000..55af3de4fe --- /dev/null +++ b/src/bench/prevector_destructor.cpp @@ -0,0 +1,36 @@ +// 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.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); +BENCHMARK(PrevectorClear); diff --git a/src/prevector.h b/src/prevector.h index cba2e30057..177d81383e 100644 --- a/src/prevector.h +++ b/src/prevector.h @@ -11,6 +11,7 @@ #include <string.h> #include <iterator> +#include <type_traits> #pragma pack(push, 1) /** Implements a drop-in replacement for std::vector<T> which stores up to N @@ -388,10 +389,14 @@ public: iterator erase(iterator first, iterator last) { iterator p = first; char* endp = (char*)&(*end()); - while (p != last) { - (*p).~T(); - _size--; - ++p; + if (!std::is_trivially_destructible<T>::value) { + while (p != last) { + (*p).~T(); + _size--; + ++p; + } + } else { + _size -= last - p; } memmove(&(*first), &(*last), endp - ((char*)(&(*last)))); return first; @@ -432,7 +437,9 @@ public: } ~prevector() { - clear(); + if (!std::is_trivially_destructible<T>::value) { + clear(); + } if (!is_direct()) { free(_union.indirect); _union.indirect = NULL; |