// Copyright (c) 2013 by István Váradi

// This file is part of VSCPL, a simple cross-platform utility library

// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:

// 1. Redistributions of source code must retain the above copyright notice, this
//    list of conditions and the following disclaimer.
// 2. Redistributions in binary form must reproduce the above copyright notice,
//    this list of conditions and the following disclaimer in the documentation
//    and/or other materials provided with the distribution.

// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
// ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

// The views and conclusions contained in the software and documentation are those
// of the authors and should not be interpreted as representing official policies,
// either expressed or implied, of the FreeBSD Project.

//------------------------------------------------------------------------------

#include "Waiter.h"

#include "Event.h"

//------------------------------------------------------------------------------

using hu::varadiistvan::scpl::io::Waiter;

//------------------------------------------------------------------------------

Waiter::~Waiter()
{
    while(!events.empty()) {
        Event* event = *events.begin();
        event->removeFromWaiter();
    }
}

//------------------------------------------------------------------------------

bool Waiter::wait(int timeout)
{
    if (numEvents==0) return true;

    HANDLE handles[numEvents];
    size_t j = 0;
    for(events_t::const_iterator i = events.begin();
        i!=events.end(); ++i, ++j)
    {
        handles[j] = (*i)->getHandle();
    }

    DWORD result = WaitForMultipleObjects(numEvents, handles, false,
                                          (timeout<0) ? INFINITE : timeout);
    if (result==WAIT_FAILED) {
        setErrorCode(GetLastError());
        return false;
    } else {
        return result!=WAIT_TIMEOUT;
    }
}

//------------------------------------------------------------------------------

// Local Variables:
// mode: C++
// c-basic-offset: 4
// indent-tabs-mode: nil
// End: