xpcom/base/PHCManager.cpp

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim:set ts=2 sw=2 sts=2 et cindent: */
   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 "PHCManager.h"
   8
   9 #include "replace_malloc_bridge.h"
  10 #include "mozilla/Preferences.h"
  11 #include "mozilla/StaticPrefs_memory.h"
  12
  13 namespace mozilla {
  14
  15 using namespace phc;
  16
  17 static const char kPHCPref[] = "memory.phc.enabled";
  18
  19 static PHCState GetPHCStateFromPref() {
  20   return StaticPrefs::memory_phc_enabled() ? Enabled : OnlyFree;
  21 }
  22
  23 static void PrefChangeCallback(const char* aPrefName, void* aNull) {
  24   MOZ_ASSERT(0 == strcmp(aPrefName, kPHCPref));
  25
  26   ReplaceMalloc::SetPHCState(GetPHCStateFromPref());
  27 }
  28
  29 void InitPHCState() {
  30   ReplaceMalloc::SetPHCState(GetPHCStateFromPref());
  31
  32   Preferences::RegisterCallback(PrefChangeCallback, kPHCPref);
  33 }
  34
  35 };  // namespace mozilla