mirror of
https://github.com/mmueller41/genode.git
synced 2026-01-21 20:42:56 +01:00
3049c1004c
The 'Timer::Session::msleep' function is one of the last occurrences of long-blocking RPC calls. Synchronous blocking RPC interfaces turned out to be constant source of trouble and code complexity. I.e., a timer client that also wants to respond to non-timer events was forced to be a multi-threaded process. This patch replaces the blocking 'msleep' call by a mechanism for programming timeouts and receiving wakeup signals in an asynchronous fashion. Thereby signals originating from the timer can be handled along with signals from other signal sources by a single thread. The changed interface has been tested on Linux, L4/Fiasco, OKL4, NOVA, L4ka::Pistachio, Codezero, Fiasco.OC, and hw_pbxa9. Furthermore, this patch adds the timer test to autopilot. Fixes #1
54 lines
1.1 KiB
C++
54 lines
1.1 KiB
C++
/*
|
|
* \brief Linux-specific sleep implementation
|
|
* \author Norman Feske
|
|
* \date 2006-08-15
|
|
*/
|
|
|
|
/*
|
|
* Copyright (C) 2006-2013 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.
|
|
*/
|
|
|
|
/* Linux syscall bindings */
|
|
#include <linux_syscalls.h>
|
|
|
|
/* local includes */
|
|
#include "timer_session_component.h"
|
|
|
|
/* Linux includes */
|
|
#include <linux_syscalls.h>
|
|
#include <sys/time.h>
|
|
|
|
inline int lx_gettimeofday(struct timeval *tv, struct timeval *tz)
|
|
{
|
|
return lx_syscall(SYS_gettimeofday, tv, tz);
|
|
}
|
|
|
|
|
|
unsigned long Platform_timer::max_timeout()
|
|
{
|
|
Genode::Lock::Guard lock_guard(_lock);
|
|
return 1000*1000;
|
|
}
|
|
|
|
|
|
unsigned long Platform_timer::curr_time() const
|
|
{
|
|
struct timeval tv;
|
|
lx_gettimeofday(&tv, 0);
|
|
return tv.tv_sec*1000*1000 + tv.tv_usec;
|
|
}
|
|
|
|
|
|
void Platform_timer::_usleep(unsigned long usecs)
|
|
{
|
|
struct timespec ts;
|
|
ts.tv_sec = usecs / (1000*1000);
|
|
ts.tv_nsec = (usecs % (1000*1000)) * 1000;
|
|
|
|
if (lx_nanosleep(&ts, &ts) != 0)
|
|
throw Genode::Blocking_canceled();
|
|
}
|