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/*
** ClanLib SDK
** Copyright (c) 1997-2005 The ClanLib Team
**
** This software is provided 'as-is', without any express or implied
** warranty. In no event will the authors be held liable for any damages
** arising from the use of this software.
**
** Permission is granted to anyone to use this software for any purpose,
** including commercial applications, and to alter it and redistribute it
** freely, subject to the following restrictions:
**
** 1. The origin of this software must not be misrepresented; you must not
** claim that you wrote the original software. If you use this software
** in a product, an acknowledgment in the product documentation would be
** appreciated but is not required.
** 2. Altered source versions must be plainly marked as such, and must not be
** misrepresented as being the original software.
** 3. This notice may not be removed or altered from any source distribution.
**
** Note: Some of the libraries ClanLib may link to may have additional
** requirements or restrictions.
**
** File Author(s):
**
** Magnus Norddahl
** (if your name is missing here, please add it)
*/
#include "Core/precomp.h"
#include "event_trigger_unix.h"
// note: this cannot be replaced by <ctime>! (timeval needs to be defined)
#include <sys/time.h>
#include <sys/types.h>
#include <unistd.h>
/////////////////////////////////////////////////////////////////////////////
// CL_EventTrigger_Unix construction:
CL_EventTrigger_Unix::CL_EventTrigger_Unix()
{
pipe(wait_pipe);
}
CL_EventTrigger_Unix::~CL_EventTrigger_Unix()
{
close(wait_pipe[0]);
close(wait_pipe[1]);
}
/////////////////////////////////////////////////////////////////////////////
// CL_EventTrigger_Unix attributes:
bool CL_EventTrigger_Unix::get_flag() const
{
return wait(0);
}
/////////////////////////////////////////////////////////////////////////////
// CL_EventTrigger_Unix operations:
void CL_EventTrigger_Unix::reset() const
{
char v = 0;
while (wait(0)) read(wait_pipe[0], &v, 1);
}
void CL_EventTrigger_Unix::set_flag()
{
char v = 1;
if (!wait(0)) write(wait_pipe[1], &v, 1);
}
bool CL_EventTrigger_Unix::wait(int timeout) const
{
fd_set rfds;
FD_ZERO(&rfds);
FD_SET(wait_pipe[0], &rfds);
timeval tv;
tv.tv_sec = timeout/1000;
tv.tv_usec = (timeout%1000)*1000;
int result = select(wait_pipe[0]+1, &rfds, NULL, NULL, (timeout == -1) ? NULL : &tv);
if (result <= 0) return false;
return true;
}
/////////////////////////////////////////////////////////////////////////////
// CL_EventTrigger_Unix implementation:
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