chromium/tools/memory/partition_allocator/pa_buckets_inspect.cc

// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// Connects to a running Chrome process, and outputs statistics about its
// bucket usage.
//
// To use this tool, chrome needs to be compiled with the RECORD_ALLOC_INFO
// flag.

#include <algorithm>
#include <cstring>
#include <ios>
#include <iostream>
#include <map>
#include <optional>
#include <string>
#include <unordered_map>
#include <vector>

#include "base/check_op.h"
#include "base/debug/proc_maps_linux.h"
#include "base/files/file.h"
#include "base/files/file_enumerator.h"
#include "base/logging.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/stringprintf.h"
#include "base/thread_annotations.h"
#include "base/threading/platform_thread.h"
#include "base/time/time.h"
#include "build/build_config.h"
#include "partition_alloc/partition_root.h"
#include "partition_alloc/thread_cache.h"
#include "tools/memory/partition_allocator/inspect_utils.h"

namespace partition_alloc::tools {
namespace {

BucketIndexLookup;
kNumBuckets;

constexpr const char* kDumpName = …;
constexpr const char* kTmpDumpName = …;

uintptr_t FindAllocInfoAddress(RemoteProcessMemoryReader& reader) { … }

void DisplayPerBucketData(
    const std::unordered_map<uintptr_t, size_t>& live_allocs,
    size_t allocations,
    double allocations_per_second) { … }

}  // namespace
}  // namespace partition_alloc::tools

int main(int argc, char** argv) { … }