dom/plugins/ipc/NestedLoopTimer.cpp

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
   2  * vim: sw=4 ts=4 et :
   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 <QtCore/QTimer>
   8
   9 #include "NestedLoopTimer.h"
  10 #include "mozilla/plugins/PluginModuleChild.h"
  11
  12 namespace mozilla {
  13 namespace plugins {
  14
  15 NestedLoopTimer::NestedLoopTimer(PluginModuleChild *pmc):
  16      QObject(), mModule(pmc), mQTimer(nullptr)
  17 {
  18 }
  19
  20 NestedLoopTimer::~NestedLoopTimer()
  21 {
  22     if (mQTimer) {
  23         mQTimer->stop();
  24         delete mQTimer;
  25         mQTimer = nullptr;
  26     }
  27 }
  28
  29 void NestedLoopTimer::timeOut()
  30 {
  31     // just detected a nested loop; start a timer that will
  32     // periodically rpc-call back into the browser and process some
  33     // events
  34     mQTimer = new QTimer(this);
  35     QObject::connect(mQTimer, SIGNAL(timeout()), this,
  36                      SLOT(processSomeEvents()));
  37     mQTimer->setInterval(kNestedLoopDetectorIntervalMs);
  38     mQTimer->start();
  39 }
  40
  41 void NestedLoopTimer::processSomeEvents()
  42 {
  43     if (mModule)
  44         mModule->CallProcessSomeEvents();
  45 }
  46
  47 } /* namespace plugins */
  48 } /* namespace mozilla */