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Commit b9670bb4 authored by Josh Gao's avatar Josh Gao
Browse files

libbacktrace: add benchmarks for Backtrace::Create, CreateNew. 

Test: backtrace_benchmarks
Change-Id: I80ba5adb31d446314060edd00149f09e14e6815e
parent 3b094c16

libbacktrace/Android.bp

+1 −0
Original line number Diff line number Diff line
@@ -230,5 +230,6 @@ cc_benchmark { 
    shared_libs: [

        "libbacktrace",

        "libbase",

        "libunwindstack",

    ],

}

libbacktrace/backtrace_benchmarks.cpp

+23 −0
Original line number Diff line number Diff line
@@ -32,6 +32,7 @@ 


#include <backtrace/Backtrace.h>

#include <backtrace/BacktraceMap.h>

#include <unwindstack/Memory.h>



// Definitions of prctl arguments to set a vma name in Android kernels.

#define ANDROID_PR_SET_VMA 0x53564d41
@@ -153,4 +154,26 @@ static void BM_create_map_new(benchmark::State& state) { 
}

BENCHMARK(BM_create_map_new);





using BacktraceCreateFn = decltype(Backtrace::Create);



static void CreateBacktrace(benchmark::State& state, BacktraceMap* map, BacktraceCreateFn fn) {

  while (state.KeepRunning()) {

    std::unique_ptr<Backtrace> backtrace(fn(getpid(), gettid(), map));

    backtrace->Unwind(0);

  }

}



static void BM_create_backtrace(benchmark::State& state) {

  std::unique_ptr<BacktraceMap> backtrace_map(BacktraceMap::Create(getpid()));

  CreateBacktrace(state, backtrace_map.get(), Backtrace::Create);

}

BENCHMARK(BM_create_backtrace);



static void BM_create_backtrace_new(benchmark::State& state) {

  std::unique_ptr<BacktraceMap> backtrace_map(BacktraceMap::CreateNew(getpid()));

  CreateBacktrace(state, backtrace_map.get(), Backtrace::CreateNew);

}

BENCHMARK(BM_create_backtrace_new);



BENCHMARK_MAIN();