base/trace_event/process_memory_maps.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_maps.h"
   6
   7 #include "base/format_macros.h"
   8 #include "base/strings/stringprintf.h"
   9 #include "base/trace_event/trace_event_argument.h"
  10
  11 namespace base {
  12 namespace trace_event {
  13
  14 // static
  15 const uint32 ProcessMemoryMaps::VMRegion::kProtectionFlagsRead = 4;
  16 const uint32 ProcessMemoryMaps::VMRegion::kProtectionFlagsWrite = 2;
  17 const uint32 ProcessMemoryMaps::VMRegion::kProtectionFlagsExec = 1;
  18
  19 ProcessMemoryMaps::ProcessMemoryMaps() {
  20 }
  21
  22 ProcessMemoryMaps::~ProcessMemoryMaps() {
  23 }
  24
  25 void ProcessMemoryMaps::AsValueInto(TracedValue* value) const {
  26   static const char kHexFmt[] = "%" PRIx64;
  27
  28   // Refer to the design doc goo.gl/sxfFY8 for the semantic of these fields.
  29   value->BeginArray("vm_regions");
  30   for (const auto& region : vm_regions_) {
  31     value->BeginDictionary();
  32
  33     value->SetString("sa", StringPrintf(kHexFmt, region.start_address));
  34     value->SetString("sz", StringPrintf(kHexFmt, region.size_in_bytes));
  35     value->SetInteger("pf", region.protection_flags);
  36     value->SetString("mf", region.mapped_file);
  37
  38     value->BeginDictionary("bs");  // byte stats
  39     value->SetString(
  40         "pss", StringPrintf(kHexFmt, region.byte_stats_proportional_resident));
  41     value->SetString("prv",
  42                      StringPrintf(kHexFmt, region.byte_stats_private_resident));
  43     value->SetString("shr",
  44                      StringPrintf(kHexFmt, region.byte_stats_shared_resident));
  45     value->EndDictionary();
  46
  47     value->EndDictionary();
  48   }
  49   value->EndArray();
  50 }
  51
  52 }  // namespace trace_event
  53 }  // namespace base