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85 lines
2.0 KiB
C
85 lines
2.0 KiB
C
/*
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pidwait.c :
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Copyright (C) 1999-2000 Timo Sirainen
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "module.h"
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#include "signals.h"
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#include "modules.h"
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#include <sys/wait.h>
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static GSList *pids;
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static unsigned int childcheck_tag;
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static int signal_pidwait;
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/* add a pid to wait list */
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void pidwait_add(int pid)
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{
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pids = g_slist_append(pids, GINT_TO_POINTER(pid));
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}
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/* remove pid from wait list */
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void pidwait_remove(int pid)
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{
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pids = g_slist_remove(pids, GINT_TO_POINTER(pid));
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}
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/* return list of pids that are being waited.
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don't free the return value. */
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GSList *pidwait_get_pids(void)
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{
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return pids;
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}
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static int child_check(void)
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{
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GSList *tmp, *next;
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int status;
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/* wait for each pid.. */
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for (tmp = pids; tmp != NULL; tmp = next) {
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int pid = GPOINTER_TO_INT(tmp->data);
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next = tmp->next;
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if (waitpid(pid, &status, WNOHANG) > 0) {
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/* process terminated, remove from list */
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signal_emit_id(signal_pidwait, 2, tmp->data,
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GINT_TO_POINTER(status));
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pids = g_slist_remove(pids, tmp->data);
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}
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}
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return 1;
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}
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void pidwait_init(void)
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{
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pids = NULL;
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childcheck_tag = g_timeout_add(1000, (GSourceFunc) child_check, NULL);
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signal_pidwait = signal_get_uniq_id("pidwait");
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}
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void pidwait_deinit(void)
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{
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g_slist_free(pids);
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g_source_remove(childcheck_tag);
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}
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