base/trace_event/process_memory_totals.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_TOTALS_H_
   6 #define BASE_TRACE_EVENT_PROCESS_MEMORY_TOTALS_H_
   7
   8 #include "base/base_export.h"
   9 #include "base/basictypes.h"
  10
  11 namespace base {
  12 namespace trace_event {
  13
  14 class TracedValue;
  15
  16 // Data model for process-wide memory stats.
  17 class BASE_EXPORT ProcessMemoryTotals {
  18  public:
  19   ProcessMemoryTotals();
  20
  21   // Called at trace generation time to populate the TracedValue.
  22   void AsValueInto(TracedValue* value) const;
  23
  24   // Clears up all the data collected.
  25   void Clear();
  26
  27   uint64 resident_set_bytes() const { return resident_set_bytes_; }
  28   void set_resident_set_bytes(uint64 value) { resident_set_bytes_ = value; }
  29
  30   uint64 peak_resident_set_bytes() const { return peak_resident_set_bytes_; }
  31   void set_peak_resident_set_bytes(uint64 value) {
  32     peak_resident_set_bytes_ = value;
  33   }
  34
  35   // On some platforms (recent linux kernels, see goo.gl/sMvAVz) the peak rss
  36   // can be reset. When is_peak_rss_resettable == true, the peak refers to
  37   // peak from the previous measurement. When false, it is the absolute peak
  38   // since the start of the process.
  39   bool is_peak_rss_resetable() const { return is_peak_rss_resetable_; }
  40   void set_is_peak_rss_resetable(bool value) { is_peak_rss_resetable_ = value; }
  41
  42  private:
  43   uint64 resident_set_bytes_;
  44   uint64 peak_resident_set_bytes_;
  45   bool is_peak_rss_resetable_;
  46
  47   DISALLOW_COPY_AND_ASSIGN(ProcessMemoryTotals);
  48 };
  49
  50 }  // namespace trace_event
  51 }  // namespace base
  52
  53 #endif  // BASE_TRACE_EVENT_PROCESS_MEMORY_TOTALS_H_