1999-11-29 01:58:35 +00:00
|
|
|
/*
|
|
|
|
* Waitable timers management
|
|
|
|
*
|
|
|
|
* Copyright (C) 1999 Alexandre Julliard
|
|
|
|
*/
|
|
|
|
|
|
|
|
#include <assert.h>
|
|
|
|
#include <stdio.h>
|
|
|
|
#include <stdlib.h>
|
|
|
|
#include <sys/time.h>
|
|
|
|
#include <sys/types.h>
|
|
|
|
|
2000-08-22 20:08:37 +00:00
|
|
|
#include "winnt.h"
|
1999-11-29 01:58:35 +00:00
|
|
|
#include "handle.h"
|
|
|
|
#include "request.h"
|
|
|
|
|
|
|
|
struct timer
|
|
|
|
{
|
|
|
|
struct object obj; /* object header */
|
|
|
|
int manual; /* manual reset */
|
|
|
|
int signaled; /* current signaled state */
|
|
|
|
int period; /* timer period in ms */
|
|
|
|
struct timeval when; /* next expiration */
|
|
|
|
struct timeout_user *timeout; /* timeout user */
|
2000-08-22 20:08:37 +00:00
|
|
|
struct thread *thread; /* thread that set the APC function */
|
1999-11-29 01:58:35 +00:00
|
|
|
void *callback; /* callback APC function */
|
|
|
|
void *arg; /* callback argument */
|
|
|
|
};
|
|
|
|
|
|
|
|
static void timer_dump( struct object *obj, int verbose );
|
|
|
|
static int timer_signaled( struct object *obj, struct thread *thread );
|
|
|
|
static int timer_satisfied( struct object *obj, struct thread *thread );
|
|
|
|
static void timer_destroy( struct object *obj );
|
|
|
|
|
|
|
|
static const struct object_ops timer_ops =
|
|
|
|
{
|
2000-01-01 00:56:27 +00:00
|
|
|
sizeof(struct timer), /* size */
|
|
|
|
timer_dump, /* dump */
|
|
|
|
add_queue, /* add_queue */
|
|
|
|
remove_queue, /* remove_queue */
|
|
|
|
timer_signaled, /* signaled */
|
|
|
|
timer_satisfied, /* satisfied */
|
|
|
|
NULL, /* get_poll_events */
|
|
|
|
NULL, /* poll_event */
|
2000-12-19 02:12:45 +00:00
|
|
|
no_get_fd, /* get_fd */
|
2000-01-01 00:56:27 +00:00
|
|
|
no_flush, /* flush */
|
|
|
|
no_get_file_info, /* get_file_info */
|
|
|
|
timer_destroy /* destroy */
|
1999-11-29 01:58:35 +00:00
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
/* create a timer object */
|
|
|
|
static struct timer *create_timer( const WCHAR *name, size_t len, int manual )
|
|
|
|
{
|
|
|
|
struct timer *timer;
|
|
|
|
|
|
|
|
if ((timer = create_named_object( &timer_ops, name, len )))
|
|
|
|
{
|
2000-01-24 21:58:06 +00:00
|
|
|
if (get_error() != STATUS_OBJECT_NAME_COLLISION)
|
1999-11-29 01:58:35 +00:00
|
|
|
{
|
|
|
|
/* initialize it if it didn't already exist */
|
|
|
|
timer->manual = manual;
|
|
|
|
timer->signaled = 0;
|
|
|
|
timer->when.tv_sec = 0;
|
|
|
|
timer->when.tv_usec = 0;
|
|
|
|
timer->period = 0;
|
|
|
|
timer->timeout = NULL;
|
2000-08-22 20:08:37 +00:00
|
|
|
timer->thread = NULL;
|
1999-11-29 01:58:35 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
return timer;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* callback on timer expiration */
|
|
|
|
static void timer_callback( void *private )
|
|
|
|
{
|
|
|
|
struct timer *timer = (struct timer *)private;
|
|
|
|
|
2000-08-22 20:08:37 +00:00
|
|
|
/* queue an APC */
|
|
|
|
if (timer->thread)
|
|
|
|
thread_queue_apc( timer->thread, &timer->obj, timer->callback, APC_TIMER, 3,
|
|
|
|
(void *)timer->when.tv_sec, (void *)timer->when.tv_usec, timer->arg );
|
|
|
|
|
1999-11-29 01:58:35 +00:00
|
|
|
if (timer->period) /* schedule the next expiration */
|
|
|
|
{
|
1999-12-13 00:16:44 +00:00
|
|
|
add_timeout( &timer->when, timer->period );
|
1999-11-29 01:58:35 +00:00
|
|
|
timer->timeout = add_timeout_user( &timer->when, timer_callback, timer );
|
|
|
|
}
|
|
|
|
else timer->timeout = NULL;
|
|
|
|
|
|
|
|
/* wake up waiters */
|
|
|
|
timer->signaled = 1;
|
|
|
|
wake_up( &timer->obj, 0 );
|
|
|
|
}
|
|
|
|
|
2000-08-22 20:08:37 +00:00
|
|
|
/* cancel a running timer */
|
|
|
|
static void cancel_timer( struct timer *timer )
|
|
|
|
{
|
|
|
|
if (timer->timeout)
|
|
|
|
{
|
|
|
|
remove_timeout_user( timer->timeout );
|
|
|
|
timer->timeout = NULL;
|
|
|
|
}
|
|
|
|
if (timer->thread)
|
|
|
|
{
|
|
|
|
thread_cancel_apc( timer->thread, &timer->obj );
|
|
|
|
timer->thread = NULL;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
1999-11-29 01:58:35 +00:00
|
|
|
/* set the timer expiration and period */
|
|
|
|
static void set_timer( struct timer *timer, int sec, int usec, int period,
|
|
|
|
void *callback, void *arg )
|
|
|
|
{
|
2000-08-22 20:08:37 +00:00
|
|
|
cancel_timer( timer );
|
1999-11-29 01:58:35 +00:00
|
|
|
if (timer->manual)
|
|
|
|
{
|
|
|
|
period = 0; /* period doesn't make any sense for a manual timer */
|
|
|
|
timer->signaled = 0;
|
|
|
|
}
|
1999-12-13 00:16:44 +00:00
|
|
|
if (!sec && !usec)
|
|
|
|
{
|
|
|
|
/* special case: use now + period as first expiration */
|
|
|
|
gettimeofday( &timer->when, 0 );
|
|
|
|
add_timeout( &timer->when, period );
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
timer->when.tv_sec = sec;
|
|
|
|
timer->when.tv_usec = usec;
|
|
|
|
}
|
1999-11-29 01:58:35 +00:00
|
|
|
timer->period = period;
|
|
|
|
timer->callback = callback;
|
|
|
|
timer->arg = arg;
|
2000-08-22 20:08:37 +00:00
|
|
|
if (callback) timer->thread = current;
|
1999-11-29 01:58:35 +00:00
|
|
|
timer->timeout = add_timeout_user( &timer->when, timer_callback, timer );
|
|
|
|
}
|
|
|
|
|
|
|
|
static void timer_dump( struct object *obj, int verbose )
|
|
|
|
{
|
|
|
|
struct timer *timer = (struct timer *)obj;
|
|
|
|
assert( obj->ops == &timer_ops );
|
|
|
|
fprintf( stderr, "Timer manual=%d when=%ld.%06ld period=%d ",
|
|
|
|
timer->manual, timer->when.tv_sec, timer->when.tv_usec, timer->period );
|
|
|
|
dump_object_name( &timer->obj );
|
|
|
|
fputc( '\n', stderr );
|
|
|
|
}
|
|
|
|
|
|
|
|
static int timer_signaled( struct object *obj, struct thread *thread )
|
|
|
|
{
|
|
|
|
struct timer *timer = (struct timer *)obj;
|
|
|
|
assert( obj->ops == &timer_ops );
|
|
|
|
return timer->signaled;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int timer_satisfied( struct object *obj, struct thread *thread )
|
|
|
|
{
|
|
|
|
struct timer *timer = (struct timer *)obj;
|
|
|
|
assert( obj->ops == &timer_ops );
|
|
|
|
if (!timer->manual) timer->signaled = 0;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void timer_destroy( struct object *obj )
|
|
|
|
{
|
|
|
|
struct timer *timer = (struct timer *)obj;
|
|
|
|
assert( obj->ops == &timer_ops );
|
|
|
|
|
|
|
|
if (timer->timeout) remove_timeout_user( timer->timeout );
|
|
|
|
}
|
|
|
|
|
|
|
|
/* create a timer */
|
|
|
|
DECL_HANDLER(create_timer)
|
|
|
|
{
|
|
|
|
struct timer *timer;
|
|
|
|
|
|
|
|
req->handle = -1;
|
2000-08-30 00:00:48 +00:00
|
|
|
if ((timer = create_timer( get_req_data(req), get_req_data_size(req), req->manual )))
|
1999-11-29 01:58:35 +00:00
|
|
|
{
|
|
|
|
req->handle = alloc_handle( current->process, timer, TIMER_ALL_ACCESS, req->inherit );
|
|
|
|
release_object( timer );
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* open a handle to a timer */
|
|
|
|
DECL_HANDLER(open_timer)
|
|
|
|
{
|
2000-08-30 00:00:48 +00:00
|
|
|
req->handle = open_object( get_req_data(req), get_req_data_size(req),
|
|
|
|
&timer_ops, req->access, req->inherit );
|
1999-11-29 01:58:35 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/* set a waitable timer */
|
|
|
|
DECL_HANDLER(set_timer)
|
|
|
|
{
|
|
|
|
struct timer *timer;
|
|
|
|
|
|
|
|
if ((timer = (struct timer *)get_handle_obj( current->process, req->handle,
|
|
|
|
TIMER_MODIFY_STATE, &timer_ops )))
|
|
|
|
{
|
|
|
|
set_timer( timer, req->sec, req->usec, req->period, req->callback, req->arg );
|
|
|
|
release_object( timer );
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* cancel a waitable timer */
|
|
|
|
DECL_HANDLER(cancel_timer)
|
|
|
|
{
|
|
|
|
struct timer *timer;
|
|
|
|
|
|
|
|
if ((timer = (struct timer *)get_handle_obj( current->process, req->handle,
|
|
|
|
TIMER_MODIFY_STATE, &timer_ops )))
|
|
|
|
{
|
|
|
|
cancel_timer( timer );
|
|
|
|
release_object( timer );
|
|
|
|
}
|
|
|
|
}
|