base/trace_event/process_memory_dump.cc

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "base/trace_event/process_memory_dump.h"
   6
   7 #include "base/trace_event/process_memory_totals.h"
   8 #include "base/trace_event/trace_event_argument.h"
   9
  10 namespace base {
  11 namespace trace_event {
  12
  13 ProcessMemoryDump::ProcessMemoryDump()
  14     : has_process_totals_(false), has_process_mmaps_(false) {
  15 }
  16
  17 ProcessMemoryDump::~ProcessMemoryDump() {
  18 }
  19
  20 MemoryAllocatorDump* ProcessMemoryDump::CreateAllocatorDump(
  21     const std::string& name) {
  22   return CreateAllocatorDump(name, nullptr);
  23 }
  24
  25 MemoryAllocatorDump* ProcessMemoryDump::CreateAllocatorDump(
  26     const std::string& name,
  27     MemoryAllocatorDump* parent) {
  28   DCHECK_EQ(0ul, allocator_dumps_.count(name));
  29   MemoryAllocatorDump* mad = new MemoryAllocatorDump(name, parent);
  30   allocator_dumps_storage_.push_back(mad);
  31   allocator_dumps_[name] = mad;
  32   return mad;
  33 }
  34
  35 MemoryAllocatorDump* ProcessMemoryDump::GetAllocatorDump(
  36     const std::string& name) const {
  37   auto it = allocator_dumps_.find(name);
  38   return it == allocator_dumps_.end() ? nullptr : it->second;
  39 }
  40
  41 void ProcessMemoryDump::AsValueInto(TracedValue* value) const {
  42   // Build up the [dumper name] -> [value] dictionary.
  43   if (has_process_totals_) {
  44     value->BeginDictionary("process_totals");
  45     process_totals_.AsValueInto(value);
  46     value->EndDictionary();
  47   }
  48   if (has_process_mmaps_) {
  49     value->BeginDictionary("process_mmaps");
  50     process_mmaps_.AsValueInto(value);
  51     value->EndDictionary();
  52   }
  53   if (allocator_dumps_storage_.size() > 0) {
  54     value->BeginDictionary("allocators");
  55     for (const MemoryAllocatorDump* allocator_dump : allocator_dumps_storage_)
  56       allocator_dump->AsValueInto(value);
  57     value->EndDictionary();
  58   }
  59 }
  60
  61 }  // namespace trace_event
  62 }  // namespace base