If using the libc for Noux programs, the default implementation of these functions cannot be used because they rely on a dedicated timeout-scheduler thread. Noux programs, however, are expected to contain only the main thread. By turning the functions into weak symbols, the noux libc-plugin can provide custom implementations.
34 lines
727 B
C++
34 lines
727 B
C++
/*
|
|
* \brief C-library back end
|
|
* \author Christian Prochaska
|
|
* \date 2010-05-19
|
|
*/
|
|
|
|
/*
|
|
* Copyright (C) 2010-2012 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 <base/printf.h>
|
|
#include <os/timed_semaphore.h>
|
|
|
|
#include <sys/time.h>
|
|
|
|
extern "C" __attribute__((weak))
|
|
int clock_gettime(clockid_t clk_id, struct timespec *tp)
|
|
{
|
|
if (clk_id != CLOCK_MONOTONIC)
|
|
PWRN("Unsupported clk_id, using CLOCK_MONOTONIC instead.");
|
|
|
|
Genode::Alarm::Time time = Genode::Timeout_thread::alarm_timer()->time();
|
|
|
|
if (tp) {
|
|
tp->tv_sec = time / 1000;
|
|
tp->tv_nsec = (time % 1000) * (1000 * 1000);
|
|
}
|
|
|
|
return 0;
|
|
}
|