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/*
pidwait.c :
Copyright (C) 1999-2000 Timo Sirainen
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
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "module.h"
#include "signals.h"
#include "modules.h"
#include <sys/wait.h>
static GSList *pids;
static unsigned int childcheck_tag;
static int signal_pidwait;
/* add a pid to wait list */
void pidwait_add(int pid)
{
pids = g_slist_append(pids, GINT_TO_POINTER(pid));
}
/* remove pid from wait list */
void pidwait_remove(int pid)
{
pids = g_slist_remove(pids, GINT_TO_POINTER(pid));
}
/* return list of pids that are being waited.
don't free the return value. */
GSList *pidwait_get_pids(void)
{
return pids;
}
static int child_check(void)
{
GSList *tmp, *next;
int status;
/* wait for each pid.. */
for (tmp = pids; tmp != NULL; tmp = next) {
int pid = GPOINTER_TO_INT(tmp->data);
next = tmp->next;
if (waitpid(pid, &status, WNOHANG) > 0) {
/* process terminated, remove from list */
signal_emit_id(signal_pidwait, 2, tmp->data,
GINT_TO_POINTER(status));
pids = g_slist_remove(pids, tmp->data);
}
}
return 1;
}
void pidwait_init(void)
{
pids = NULL;
childcheck_tag = g_timeout_add(1000, (GSourceFunc) child_check, NULL);
signal_pidwait = signal_get_uniq_id("pidwait");
}
void pidwait_deinit(void)
{
g_slist_free(pids);
g_source_remove(childcheck_tag);
}
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