mozglue/misc/AutoProfilerLabel.cpp

   1 /* -*- Mode: C++; tab-width: 2; 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 "mozilla/AutoProfilerLabel.h"
   8
   9 namespace mozilla {
  10
  11 static ProfilerLabelEnter sEnter = nullptr;
  12 static ProfilerLabelExit sExit = nullptr;
  13
  14 void RegisterProfilerLabelEnterExit(ProfilerLabelEnter aEnter,
  15                                     ProfilerLabelExit aExit) {
  16   sEnter = aEnter;
  17   sExit = aExit;
  18 }
  19
  20 AutoProfilerLabel::AutoProfilerLabel(
  21     const char* aLabel,
  22     const char* aDynamicString MOZ_GUARD_OBJECT_NOTIFIER_PARAM_IN_IMPL) {
  23   MOZ_GUARD_OBJECT_NOTIFIER_INIT;
  24
  25   mProfilingStack = sEnter ? sEnter(aLabel, aDynamicString, this) : nullptr;
  26 }
  27
  28 AutoProfilerLabel::~AutoProfilerLabel() {
  29   if (sExit && mProfilingStack) {
  30     sExit(mProfilingStack);
  31   }
  32 }
  33
  34 }  // namespace mozilla