base/trace_event/process_memory_maps.h

   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 #ifndef BASE_TRACE_EVENT_PROCESS_MEMORY_MAPS_H_
   6 #define BASE_TRACE_EVENT_PROCESS_MEMORY_MAPS_H_
   7
   8 #include <string>
   9 #include <vector>
  10
  11 #include "base/base_export.h"
  12 #include "base/basictypes.h"
  13
  14 namespace base {
  15 namespace trace_event {
  16
  17 class TracedValue;
  18
  19 // Data model for process-wide memory stats.
  20 class BASE_EXPORT ProcessMemoryMaps {
  21  public:
  22   struct VMRegion {
  23     static const uint32 kProtectionFlagsRead;
  24     static const uint32 kProtectionFlagsWrite;
  25     static const uint32 kProtectionFlagsExec;
  26
  27     uint64 start_address;
  28     uint64 size_in_bytes;
  29     uint32 protection_flags;
  30     std::string mapped_file;
  31     uint64 mapped_file_offset;
  32     uint64 byte_stats_resident;
  33     uint64 byte_stats_anonymous;
  34   };
  35
  36   ProcessMemoryMaps();
  37   ~ProcessMemoryMaps();
  38
  39   void AddVMRegion(const VMRegion& region) { vm_regions_.push_back(region); }
  40   const std::vector<VMRegion>& vm_regions() const { return vm_regions_; }
  41
  42   // Called at trace generation time to populate the TracedValue.
  43   void AsValueInto(TracedValue* value) const;
  44
  45  private:
  46   std::vector<VMRegion> vm_regions_;
  47
  48   DISALLOW_COPY_AND_ASSIGN(ProcessMemoryMaps);
  49 };
  50
  51 }  // namespace trace_event
  52 }  // namespace base
  53
  54 #endif  // BASE_TRACE_EVENT_PROCESS_MEMORY_MAPS_H_