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Rewrite pidwait using g_child_watch_add.

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git-svn-id: file:///var/www/svn.irssi.org/SVN/irssi/trunk@4975 dbcabf3a-b0e7-0310-adc4-f8d773084564
This commit is contained in:
Emanuele Giaquinta 2008-12-30 11:51:27 +00:00 committed by exg
parent baba2b7505
commit 8cc7a02b4d
1 changed files with 22 additions and 28 deletions
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50
src/core/pidwait.c
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@ -22,23 +22,38 @@
#include "signals.h"
#include "modules.h"
#include <sys/wait.h>
static GHashTable *child_pids;
static GSList *pids;
static unsigned int childcheck_tag;
static int signal_pidwait;
static void sig_child(GPid pid, gint status, gpointer data)
{
signal_emit_id(signal_pidwait, 2, GINT_TO_POINTER(pid),
GINT_TO_POINTER(status));
g_hash_table_remove(child_pids, GINT_TO_POINTER(pid));
pids = g_slist_remove(pids, GINT_TO_POINTER(pid));
}
/* add a pid to wait list */
void pidwait_add(int pid)
{
pids = g_slist_append(pids, GINT_TO_POINTER(pid));
if (g_hash_table_lookup(child_pids, GINT_TO_POINTER(pid)) == NULL) {
int id = g_child_watch_add_full(10, pid, sig_child, NULL, NULL);
g_hash_table_insert(child_pids, GINT_TO_POINTER(pid), GINT_TO_POINTER(id));
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));
gpointer id = g_hash_table_lookup(child_pids, GINT_TO_POINTER(pid));
if (id != NULL) {
g_source_remove(GPOINTER_TO_INT(id));
g_hash_table_remove(child_pids, GINT_TO_POINTER(pid));
pids = g_slist_remove(pids, GINT_TO_POINTER(pid));
}
}
/* return list of pids that are being waited.
@ -48,37 +63,16 @@ 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)
{
child_pids = g_hash_table_new(g_direct_hash, g_direct_equal);
pids = NULL;
childcheck_tag = g_timeout_add(1000, (GSourceFunc) child_check, NULL);
signal_pidwait = signal_get_uniq_id("pidwait");
}
void pidwait_deinit(void)
{
g_hash_table_destroy(child_pids);
g_slist_free(pids);
g_source_remove(childcheck_tag);
}