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- /*
- * Copyright 2016-present Facebook, Inc.
- *
- * 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 <folly/Benchmark.h>
- #include <folly/experimental/symbolizer/Dwarf.h>
- #include <folly/portability/GFlags.h>
- void dummy() {}
- namespace {
- using namespace folly::symbolizer;
- void run(Dwarf::LocationInfoMode mode, size_t n) {
- folly::BenchmarkSuspender suspender;
- // NOTE: Using '/proc/self/exe' only works if the code for @dummy is
- // statically linked into the binary.
- ElfFile elf("/proc/self/exe");
- Dwarf dwarf(&elf);
- suspender.dismiss();
- for (size_t i = 0; i < n; i++) {
- Dwarf::LocationInfo info;
- dwarf.findAddress(uintptr_t(&dummy), info, mode);
- }
- }
- } // namespace
- BENCHMARK(DwarfFindAddressFast, n) {
- run(folly::symbolizer::Dwarf::LocationInfoMode::FAST, n);
- }
- BENCHMARK(DwarfFindAddressFull, n) {
- run(folly::symbolizer::Dwarf::LocationInfoMode::FULL, n);
- }
- int main(int argc, char* argv[]) {
- gflags::ParseCommandLineFlags(&argc, &argv, true);
- google::InitGoogleLogging(argv[0]);
- folly::runBenchmarksOnFlag();
- return 0;
- }
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