42 lines
801 B
C++
42 lines
801 B
C++
/*
|
|
* \brief C-library back end
|
|
* \author Christian Prochaska
|
|
* \date 2012-03-20
|
|
*/
|
|
|
|
/*
|
|
* Copyright (C) 2008-2013 Genode Labs GmbH
|
|
*
|
|
* This file is part of the Genode OS framework, which is distributed
|
|
* under the terms of the GNU General Public License version 2.
|
|
*/
|
|
|
|
#include <os/timed_semaphore.h>
|
|
|
|
#include <sys/time.h>
|
|
|
|
using namespace Genode;
|
|
|
|
extern "C" __attribute__((weak))
|
|
int _nanosleep(const struct timespec *req, struct timespec *rem)
|
|
{
|
|
Genode::Alarm::Time sleep_msec = (req->tv_sec * 1000) + (req->tv_nsec / 1000000);
|
|
|
|
/* Timed_semaphore does not support timeouts < 10ms */
|
|
if (sleep_msec < 10)
|
|
sleep_msec = 10;
|
|
|
|
Timed_semaphore sem(0);
|
|
try {
|
|
sem.down(sleep_msec);
|
|
} catch(Timeout_exception) {
|
|
}
|
|
|
|
if (rem) {
|
|
rem->tv_sec = 0;
|
|
rem->tv_nsec = 0;
|
|
}
|
|
|
|
return 0;
|
|
}
|