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/*
Copyright (C) 1995 Free Software Foundation, Inc.
Written by Michael I. Bushnell, p/BSG.
This file is part of the GNU Hurd.
The GNU Hurd 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, or (at
your option) any later version.
The GNU Hurd 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, USA. */
#include <linux/timer.h>
#include <asm/system.h>
#include <linux/sched.h>
#include "pfinet.h"
long long root_jiffies;
volatile struct mapped_time_value *mapped_time;
static spin_lock_t timer_lock;
struct timer_list *timers;
mach_thread_t timer_thread;
err = mach_msg (NULL, MACH_RCV_MSG|MACH_RCV_TIMEOUT|MACH_RCV_INTERRUPT,
0, 0, recv, timer->expires * (1000 / HZ), MACH_PORT_NULL);
void
add_timer (struct timer_list *timer)
{
spin_lock (&timer_lock);
timer->expires += jiffies;
spin_unlock (&timer_lock);
}
int
del_timer (struct timer_list *timer)
{
thread_t thread;
spin_lock (&timer_lock);
recheck:
switch (timer->state)
{
case TIMER_INACTIVE:
break;
case TIMER_STARTING:
/* Wait until it's had a chance to set its ID. */
spin_unlock (&timer_lock);
swtch_pri (0);
spin_lock (&timer_lock);
goto recheck;
case TIMER_STARTED:
/*
if (timer->thread == -1)
{
/* It hasn't had a chance to set its ID. Wait a bit
until it does. */
do
swtch_pri (0);
while (timer->thread == -1);
}
thread = timer->thread;
if (thread == MACH_PORT_NULL)
return 0; /* ??? */
thread_suspend (thread);
/* Test again, because it might have run and completed the mach_msg
after we tested above and before we suspended, and we don't want
to abort the mach_port_destroy and certainly not anything inside
the timer function\ which might have started running. */
if (timer->thread)
thread_abort (thread);
thread_resume (thread);
/* What to return? */
return 0; /* ???*/
}
void
init_timer (struct timer_list *timer)
{
timer->state = TIMER_INACTIVE;
}
void
init_root_jiffies ()
{
struct timeval tp;
fill_timeval (&tp);
root_jiffies = (long long) tp.tv_sec * HZ
+ (long long) tp.tv_usec * HZ / 1000.0;
}
void
init_mapped_time ()
{
device_t timedev;
memory_object_t timeobj;
device_open (master_device, 0, "time", &timedev);
device_map (timedev, VM_PROT_READ, 0, sizeof (mapped_time_value_t),
&timeobj, 0);
vm_map (mach_task_self (), (vm_address_t *)&mapped_time,
sizeof (mapped_time_value_t), 0, 1, timeobj, 0, 0,
VM_PROT_READ, VM_PROT_READ, VM_INHERIT_NONE);
mach_port_deallocate (mach_task_self (), timedev);
mach_port_deallocate (mach_task_self (), timeobj);
}
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