v8_isolate_memory_dump_provider.cc | Explore in Territory

// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "gin/v8_isolate_memory_dump_provider.h"

#include <inttypes.h>
#include <stddef.h>

#include "base/check_op.h"
#include "base/notreached.h"
#include "base/strings/stringprintf.h"
#include "base/task/single_thread_task_runner.h"
#include "base/trace_event/memory_dump_manager.h"
#include "base/trace_event/process_memory_dump.h"
#include "gin/public/isolate_holder.h"
#include "v8/include/v8-isolate.h"
#include "v8/include/v8-locker.h"
#include "v8/include/v8-statistics.h"

namespace gin {

V8IsolateMemoryDumpProvider::V8IsolateMemoryDumpProvider(
    IsolateHolder* isolate_holder,
    scoped_refptr<base::SingleThreadTaskRunner> task_runner)
    : … { … }

V8IsolateMemoryDumpProvider::~V8IsolateMemoryDumpProvider() { … }

// Called at trace dump point time. Creates a snapshot with the memory counters
// for the current isolate.
bool V8IsolateMemoryDumpProvider::OnMemoryDump(
    const base::trace_event::MemoryDumpArgs& args,
    base::trace_event::ProcessMemoryDump* process_memory_dump) { … }

namespace {

// Dump statistics related to code/bytecode when memory-infra.v8.code_stats is
// enabled.
void DumpCodeStatistics(base::trace_event::MemoryAllocatorDump* dump,
                        IsolateHolder* isolate_holder) { … }

// Dump the number of native and detached contexts.
// The result looks as follows in the Chrome trace viewer:
// ========================================
// Component                   object_count
// - v8
//   - main
//     - contexts
//       - detached_context  10
//       - native_context    20
//   - workers
//     - contexts
//       - detached_context
//         - isolate_0x1234  10
//       - native_context
//         - isolate_0x1234  20
// ========================================
void DumpContextStatistics(
    base::trace_event::ProcessMemoryDump* process_memory_dump,
    std::string dump_base_name,
    std::string dump_name_suffix,
    size_t number_of_detached_contexts,
    size_t number_of_native_contexts) { … }

std::string IsolateTypeString(IsolateHolder::IsolateType isolate_type) { … }

bool CanHaveMultipleIsolates(IsolateHolder::IsolateType isolate_type) { … }

}  // namespace

void V8IsolateMemoryDumpProvider::DumpHeapStatistics(
    const base::trace_event::MemoryDumpArgs& args,
    base::trace_event::ProcessMemoryDump* process_memory_dump) { … }

}  // namespace gin
chromium/gin/v8_isolate_memory_dump_provider.cc
