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/*
* Project: S.Ha.R.K.
*
* Coordinators: Giorgio Buttazzo <giorgio@sssup.it>
*
*
* ReTiS Lab (Scuola Superiore S.Anna - Pisa - Italy)
*
* http://www.sssup.it
* http://retis.sssup.it
* http://shark.sssup.it
*/
/*
* Copyright (C) 2000 Paolo Gai
*
* This program 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 of the License, or
* (at your option) any later version.
*
* This program 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 02111-1307 USA
*
*/
#include "chimera.h"
struct action_event
*first_action_event
= NULL
;
int insert_action_event
(struct action_event
*e
) {
struct action_event
*t
= first_action_event
, *k
= NULL
;
SYS_FLAGS f
;
f
= kern_fsave
();
e
->status
= EVT_STATUS_WAIT
;
if (!t
) {
first_action_event
= e
;
e
->next
= NULL
;
kern_frestore
(f
);
return 0;
}
while(t
) {
if (TIMESPEC_A_LT_B
(&e
->time,&t
->time))
break;
k
= t
;
t
= t
->next
;
}
t
= k
->next
;
k
->next
= e
;
e
->next
= t
;
t
= first_action_event
;
kern_frestore
(f
);
return 0;
}
int delete_action_event
(struct action_event
*e
) {
struct action_event
*t
= first_action_event
;
SYS_FLAGS f
;
if (!t
) return -1;
f
= kern_fsave
();
if (t
== e
) {
first_action_event
= t
->next
;
kern_frestore
(f
);
return 0;
}
while(t
) {
if (t
->next
== e
)
break;
t
= t
->next
;
}
if (t
) {
t
->next
= e
->next
;
kern_frestore
(f
);
return 0;
}
kern_frestore
(f
);
return -1;
}
struct action_event
* get_first_old_event
(struct timespec
*time) {
struct action_event
*t
= first_action_event
;
SYS_FLAGS f
;
if (!t
) return NULL
;
f
= kern_fsave
();
if (TIMESPEC_A_GT_B
(time,&(t
->time))) {
first_action_event
= t
->next
;
t
->status
= EVT_STATUS_EXEC
;
kern_frestore
(f
);
return t
;
}
kern_frestore
(f
);
return NULL
;
}