tools/profiler/core/memory_counter.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #include "memory_counter.h"
   8
   9 #include "mozilla/UniquePtr.h"
  10 #include "mozmemory.h"
  11
  12 #include "GeckoProfiler.h"
  13
  14 namespace mozilla::profiler {
  15 class MemoryCounter : public BaseProfilerCount {
  16  public:
  17   MemoryCounter()
  18       : BaseProfilerCount("malloc", "Memory", "Amount of allocated memory") {};
  19
  20   virtual ~MemoryCounter() {
  21     // The counter is removed by ActivePS::Destroy()
  22   }
  23
  24   CountSample Sample() override {
  25     jemalloc_stats_lite_t stats;
  26
  27     jemalloc_stats_lite(&stats);
  28
  29     CountSample sample = {
  30         .count = int64_t(stats.allocated_bytes),
  31         .number = stats.num_operations,
  32         .isSampleNew = true,
  33     };
  34
  35     return sample;
  36   }
  37 };
  38
  39 UniquePtr<BaseProfilerCount> create_memory_counter() {
  40   return MakeUnique<MemoryCounter>();
  41 }
  42
  43 }  // namespace mozilla::profiler