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     const scoped_refptr<MemoryDumpSessionState>& session_state)
  15     : has_process_totals_(false),
  16       has_process_mmaps_(false),
  17       session_state_(session_state) {
  18 }
  19
  20 ProcessMemoryDump::~ProcessMemoryDump() {
  21 }
  22
  23 MemoryAllocatorDump* ProcessMemoryDump::CreateAllocatorDump(
  24     const std::string& absolute_name) {
  25   MemoryAllocatorDump* mad = new MemoryAllocatorDump(absolute_name, this);
  26   DCHECK_EQ(0ul, allocator_dumps_.count(absolute_name));
  27   allocator_dumps_storage_.push_back(mad);
  28   allocator_dumps_[absolute_name] = mad;
  29   return mad;
  30 }
  31
  32 MemoryAllocatorDump* ProcessMemoryDump::GetAllocatorDump(
  33     const std::string& absolute_name) const {
  34   auto it = allocator_dumps_.find(absolute_name);
  35   return it == allocator_dumps_.end() ? nullptr : it->second;
  36 }
  37
  38 void ProcessMemoryDump::AsValueInto(TracedValue* value) const {
  39   // Build up the [dumper name] -> [value] dictionary.
  40   if (has_process_totals_) {
  41     value->BeginDictionary("process_totals");
  42     process_totals_.AsValueInto(value);
  43     value->EndDictionary();
  44   }
  45   if (has_process_mmaps_) {
  46     value->BeginDictionary("process_mmaps");
  47     process_mmaps_.AsValueInto(value);
  48     value->EndDictionary();
  49   }
  50   if (allocator_dumps_storage_.size() > 0) {
  51     value->BeginDictionary("allocators");
  52     for (const MemoryAllocatorDump* allocator_dump : allocator_dumps_storage_)
  53       allocator_dump->AsValueInto(value);
  54     value->EndDictionary();
  55   }
  56 }
  57
  58 }  // namespace trace_event
  59 }  // namespace base