59 lines
1.4 KiB
C++
59 lines
1.4 KiB
C++
// include/sleep.hh
|
|
// This file is part of libpbe; see http://svn.chezphil.org/libpbe/
|
|
// (C) 2007 Philip Endecott
|
|
|
|
// 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
|
|
// 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
|
|
#ifndef libpbe_sleep_hh
|
|
#define libpbe_sleep_hh
|
|
|
|
#include <time.h>
|
|
|
|
#include <cmath>
|
|
|
|
#include "Exception.hh"
|
|
|
|
|
|
namespace pbe {
|
|
|
|
inline void sleep(double t)
|
|
{
|
|
double whole_secs;
|
|
double frac_secs = modf(t, &whole_secs);
|
|
struct timespec ts;
|
|
ts.tv_sec = static_cast<int>(whole_secs);
|
|
ts.tv_nsec = static_cast<int>(frac_secs*1e9);
|
|
struct timespec rem;
|
|
while (1) {
|
|
int rc = nanosleep(&ts,&rem);
|
|
if (rc==0) {
|
|
return;
|
|
} else {
|
|
if (errno==EINTR) {
|
|
ts = rem;
|
|
continue;
|
|
}
|
|
throw_ErrnoException("nanosleep");
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
};
|
|
|
|
|
|
#endif
|
|
|