ut_timeout_epoc.cpp

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//
// Copyright (c) 2009-2009 HIIT and Tero Hasu
// Copyright (c) 2007-2009 Google Inc.
// Copyright (c) 2006-2007 Jaiku Ltd.
// Copyright (c) 2002-2006 Mika Raento and Renaud Petit
//
// This software is licensed at your choice under either 1 or 2 below.
//
// 1. MIT License
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
//
// 2. Gnu General Public license 2.0
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
//

#include "ut_timeout_epoc.hpp"

#include "symbian_auto_ptr.hpp"

NONSHARABLE_CLASS(CTimeOutImpl) : public CTimeOut 
{
 public:
  ~CTimeOutImpl();
 private:
  virtual void Wait(int seconds);
  virtual void WaitMax(int seconds); 
  virtual void Reset();
  virtual void WaitShort(int milliseconds);
  virtual const TTime& WaitingUntil() const;

  CTimeOutImpl(MTimeOut& i_cb, CActive::TPriority aPriority);
  void ConstructL();
  void RunL();

  MTimeOut& cb;
  TTime iWaitUntil;

  friend class CTimeOut;
};

CTimeOut::CTimeOut(CActive::TPriority aPriority) : CTimer(aPriority)
{
}

CTimeOut::~CTimeOut()
{
}

CTimeOutImpl::CTimeOutImpl(MTimeOut& i_cb, CActive::TPriority aPriority) : 
  CTimeOut(aPriority), cb(i_cb)
{
}

void CTimeOutImpl::ConstructL()
{
  CTimer::ConstructL();
  CActiveScheduler::Add(this);
}

CTimeOut* CTimeOut::NewL(MTimeOut& i_cb, CActive::TPriority aPriority)
{
  e_auto_ptr<CTimeOutImpl> ret (new (ELeave) CTimeOutImpl(i_cb, aPriority));
  ret->ConstructL();
  return ret.release();
}

void CTimeOutImpl::RunL()
{
  // there's no guarantee that we aren't deleted
  // from the expired() callback, so we have to cache
  // any required member variables in stack variables

  TTime now; now.HomeTime(); 
  
  now+=TTimeIntervalMicroSeconds(100*1000);
  if (now < iWaitUntil) {
    At(iWaitUntil);
  } else {
    iWaitUntil=TTime(0);
    cb.expired(this);
  }
}

const TTime& CTimeOutImpl::WaitingUntil() const
{
  return iWaitUntil;
}

void CTimeOutImpl::WaitShort(int milliseconds)
{
  Reset();
  TTime at;
  at.HomeTime();
  
  if (milliseconds<0) milliseconds=0;
  at+=TTimeIntervalMicroSeconds(milliseconds*1000);
  iWaitUntil=at;
  At(at);
}

void CTimeOutImpl::Wait(int seconds)
{
  Reset();
  TTime at;
  at.HomeTime();
  
  if (seconds<0) seconds=0;
  at+=TTimeIntervalSeconds(seconds);
  iWaitUntil=at;
  At(at);
}

void CTimeOutImpl::WaitMax(int seconds)
{
  TTime t; t.HomeTime();
  if (seconds<0) seconds=0;
  t+=TTimeIntervalSeconds(seconds);
  if (IsActive() && t >= iWaitUntil) return;
  Reset();
  iWaitUntil=t;
  At(t);
}

void CTimeOutImpl::Reset()
{
  iWaitUntil=TTime(0);
  Cancel();
}

CTimeOutImpl::~CTimeOutImpl() 
{
  Cancel();
}