view Applications/Generic/NativeStoneApplicationContext.cpp @ 431:26b90b110719 am-vsol-upgrade

added DelayedCallExecutor to avoid using sleep() in C++ that consumes 100% CPU once executed in WASM
author am@osimis.io
date Thu, 29 Nov 2018 19:25:15 +0100
parents c23df8b3433b
children 8999823db8b8 b70e9be013e4
line wrap: on
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/**
 * Stone of Orthanc
 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
 * Department, University Hospital of Liege, Belgium
 * Copyright (C) 2017-2018 Osimis S.A., Belgium
 *
 * This program is free software: you can redistribute it and/or
 * modify it under the terms of the GNU Affero General Public License
 * as published by the Free Software Foundation, either version 3 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Affero General Public License for more details.
 * 
 * You should have received a copy of the GNU Affero General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 **/


#include "NativeStoneApplicationContext.h"
#include "../../Platforms/Generic/OracleWebService.h"

namespace OrthancStone
{
  IWidget& NativeStoneApplicationContext::GlobalMutexLocker::SetCentralWidget(IWidget* widget)
  {
    that_.centralViewport_.SetCentralWidget(widget);
    return *widget;
  }


  void NativeStoneApplicationContext::UpdateThread(NativeStoneApplicationContext* that)
  {
    while (!that->stopped_)
    {
      {
        GlobalMutexLocker locker(*that);
        locker.GetCentralViewport().DoAnimation();
      }
      
      boost::this_thread::sleep(boost::posix_time::milliseconds(that->updateDelayInMs_));
    }
  }
  

  NativeStoneApplicationContext::NativeStoneApplicationContext(MessageBroker& broker) :
    StoneApplicationContext(broker),
    centralViewport_(broker),
    stopped_(true),
    updateDelayInMs_(100)   // By default, 100ms between each refresh of the content
  {
    srand(time(NULL)); 
  }


  void NativeStoneApplicationContext::Start()
  {
    boost::mutex::scoped_lock lock(globalMutex_);
    
    if (stopped_ &&
        centralViewport_.HasAnimation())
    {
      stopped_ = false;
      updateThread_ = boost::thread(UpdateThread, this);
    }
  }


  void NativeStoneApplicationContext::Stop()
  {
    stopped_ = true;
    
    if (updateThread_.joinable())
    {
      updateThread_.join();
    }
  }
}