libunwindstack/benchmarks/Utils.cpp

/*
 * Copyright (C) 2020 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 <err.h>
#include <stdint.h>

#include <string>
#include <vector>

#include <android-base/file.h>
#include <android-base/strings.h>
#include <benchmark/benchmark.h>

#include <unwindstack/Elf.h>
#include <unwindstack/Memory.h>

std::string GetElfFile() {
  return android::base::GetExecutableDirectory() + "/benchmarks/files/libart_arm.so";
}

std::string GetSymbolSortedElfFile() {
  return android::base::GetExecutableDirectory() + "/benchmarks/files/boot_arm.oat";
}

std::string GetCompressedElfFile() {
  // Both are the same right now.
  return GetSymbolSortedElfFile();
}

#if defined(__BIONIC__)

#include <meminfo/procmeminfo.h>
#include <procinfo/process_map.h>

void GatherRss(uint64_t* rss_bytes) {
  android::meminfo::ProcMemInfo proc_mem(getpid());
  const std::vector<android::meminfo::Vma>& maps = proc_mem.MapsWithoutUsageStats();
  for (auto& vma : maps) {
    if (vma.name == "[anon:libc_malloc]" || android::base::StartsWith(vma.name, "[anon:scudo:") ||
        android::base::StartsWith(vma.name, "[anon:GWP-ASan")) {
      android::meminfo::Vma update_vma(vma);
      if (!proc_mem.FillInVmaStats(update_vma)) {
        err(1, "FillInVmaStats failed\n");
      }
      *rss_bytes += update_vma.usage.rss;
    }
  }
}
#endif