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/*
* barrier -- mouse and keyboard sharing utility
* Copyright (C) 2012-2016 Symless Ltd.
* Copyright (C) 2002 Chris Schoeneman
*
* This package is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* found in the file LICENSE that should have accompanied this file.
*
* This package 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, see <http://www.gnu.org/licenses/>.
*/
#include "arch/unix/ArchSleepUnix.h"
#include "arch/Arch.h"
#if TIME_WITH_SYS_TIME
# include <sys/time.h>
# include <time.h>
#else
# if HAVE_SYS_TIME_H
# include <sys/time.h>
# else
# include <time.h>
# endif
#endif
#if !HAVE_NANOSLEEP
# if HAVE_SYS_SELECT_H
# include <sys/select.h>
# endif
# if HAVE_SYS_TYPES_H
# include <sys/types.h>
# endif
# if HAVE_UNISTD_H
# include <unistd.h>
# endif
#endif
//
// ArchSleepUnix
//
ArchSleepUnix::ArchSleepUnix()
{
// do nothing
}
ArchSleepUnix::~ArchSleepUnix()
{
// do nothing
}
void
ArchSleepUnix::sleep(double timeout)
{
ARCH->testCancelThread();
if (timeout < 0.0) {
return;
}
#if HAVE_NANOSLEEP
// prep timeout
struct timespec t;
t.tv_sec = (long)timeout;
t.tv_nsec = (long)(1.0e+9 * (timeout - (double)t.tv_sec));
// wait
while (nanosleep(&t, &t) < 0)
ARCH->testCancelThread();
#else
/* emulate nanosleep() with select() */
double startTime = ARCH->time();
double timeLeft = timeout;
while (timeLeft > 0.0) {
struct timeval timeout2;
timeout2.tv_sec = static_cast<int>(timeLeft);
timeout2.tv_usec = static_cast<int>(1.0e+6 * (timeLeft -
timeout2.tv_sec));
select((SELECT_TYPE_ARG1) 0,
SELECT_TYPE_ARG234 NULL,
SELECT_TYPE_ARG234 NULL,
SELECT_TYPE_ARG234 NULL,
SELECT_TYPE_ARG5 &timeout2);
ARCH->testCancelThread();
timeLeft = timeout - (ARCH->time() - startTime);
}
#endif
}
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