From c4e727bff3eddbb624d7038fac88637d8afebd2b Mon Sep 17 00:00:00 2001 From: Steven Moreland Date: Tue, 15 Oct 2019 10:26:44 -0700 Subject: [PATCH] Add dladdr benchmark. Bug: 142684469 Test: adb shell /data/benchmarktest64/bionic-benchmarks/bionic-benchmarks --benchmark_filter="BM_dladdr.*" ------------------------------------------------------------------- Benchmark Time CPU Iterations ------------------------------------------------------------------- BM_dladdr_libbase_split 92.6 ns 92.4 ns 6673841 BM_dladdr_libc_printf 8690 ns 8667 ns 80916 BM_dladdr_libdl_dladdr 133 ns 132 ns 5342791 BM_dladdr_local_function 93.0 ns 92.7 ns 7625562 Change-Id: I259dd8f64ccc288835576a2eb08b8b8132777a4b --- benchmarks/Android.bp | 1 + benchmarks/dlfcn_benchmark.cpp | 39 ++++++++++++++++++++++++++++++++++ 2 files changed, 40 insertions(+) create mode 100644 benchmarks/dlfcn_benchmark.cpp diff --git a/benchmarks/Android.bp b/benchmarks/Android.bp index 70f7bab12..a7be96553 100644 --- a/benchmarks/Android.bp +++ b/benchmarks/Android.bp @@ -29,6 +29,7 @@ cc_defaults { "bionic_benchmarks.cpp", "atomic_benchmark.cpp", "ctype_benchmark.cpp", + "dlfcn_benchmark.cpp", "get_heap_size_benchmark.cpp", "inttypes_benchmark.cpp", "malloc_benchmark.cpp", diff --git a/benchmarks/dlfcn_benchmark.cpp b/benchmarks/dlfcn_benchmark.cpp new file mode 100644 index 000000000..6a2bb575d --- /dev/null +++ b/benchmarks/dlfcn_benchmark.cpp @@ -0,0 +1,39 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include +#include +#include + +#include "util.h" + +void local_function() {} + +template +int bm_dladdr(F fun) { + const void* addr = reinterpret_cast(fun); + Dl_info info; + int res = dladdr(addr, &info); + if (res == 0) abort(); + if (info.dli_fname == nullptr) abort(); + + // needed for DoNotOptimize + return res; +} +BIONIC_TRIVIAL_BENCHMARK(BM_dladdr_libc_printf, bm_dladdr(printf)); +BIONIC_TRIVIAL_BENCHMARK(BM_dladdr_libdl_dladdr, bm_dladdr(dladdr)); +BIONIC_TRIVIAL_BENCHMARK(BM_dladdr_local_function, bm_dladdr(local_function)); +BIONIC_TRIVIAL_BENCHMARK(BM_dladdr_libbase_split, bm_dladdr(android::base::Split));