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Code Issues Releases Wiki Activity

Handle SIGINT properly during batch mode.

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This commit is contained in:
Michael Sawyer
2000-07-14 20:14:36 +00:00
parent 891a1bead8
commit 925a734426
1 changed files with 39 additions and 35 deletions
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72
bin/dig/dighost.c
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@@ -15,7 +15,7 @@
* SOFTWARE.
*/
/* $Id: dighost.c,v 1.87 2000/07/14 17:57:25 mws Exp $ */
/* $Id: dighost.c,v 1.88 2000/07/14 20:14:36 mws Exp $ */
/*
* Notice to programmers: Do not use this code as an example of how to
@@ -109,6 +109,7 @@ extern isc_boolean_t isc_mem_debugging;
isc_boolean_t debugging = ISC_FALSE;
char *progname = NULL;
isc_mutex_t lookup_lock;
dig_lookup_t *current_lookup = NULL;
/*
* Apply and clear locks at the event level in global task.
@@ -765,6 +766,7 @@ try_clear_lookup(dig_lookup_t *lookup) {
* At this point, we know there are no queries on the lookup,
* so can make it go away also.
*/
debug("cleared");
s = ISC_LIST_HEAD(lookup->my_server_list);
while (s != NULL) {
debug("freeing server %p belonging to %p",
@@ -783,13 +785,10 @@ try_clear_lookup(dig_lookup_t *lookup) {
}
if (lookup->timer != NULL)
isc_timer_detach(&lookup->timer);
INSIST(lookup->sendspace != NULL);
if (lookup->sendspace != NULL)
isc_mempool_put(commctx, lookup->sendspace);
ptr = lookup;
lookup = ISC_LIST_NEXT(lookup, link);
ISC_LIST_DEQUEUE(lookup_list, (dig_lookup_t *)ptr, link);
isc_mem_free(mctx, ptr);
isc_mem_free(mctx, lookup);
return (ISC_TRUE);
}
@@ -799,15 +798,27 @@ try_clear_lookup(dig_lookup_t *lookup) {
* This assumes that the lookup on the head of the queue hasn't been
* started yet.
*/
static void
begin_next_lookup(void) {
void
start_lookup(void) {
dig_lookup_t *next;
debug("begin_next_lookup()");
debug("start_lookup()");
if (cancel_now)
return;
/*
* If there's a current lookup running, we really shouldn't get
* here.
*/
INSIST(current_lookup == NULL);
next = ISC_LIST_HEAD(lookup_list);
current_lookup = next;
/*
* Put the current lookup somewhere so cancel_all can find it
*/
if (next != NULL) {
ISC_LIST_DEQUEUE(lookup_list, next, link);
setup_lookup(next);
do_lookup(next);
} else {
@@ -838,8 +849,10 @@ check_next_lookup(dig_lookup_t *lookup) {
}
if (still_working)
return;
if (try_clear_lookup(lookup))
begin_next_lookup();
if (try_clear_lookup(lookup)) {
current_lookup = NULL;
start_lookup();
}
}
static void
@@ -2241,21 +2254,6 @@ do_lookup(dig_lookup_t *lookup) {
do_lookup_udp(lookup);
}
void
start_lookup(void) {
dig_lookup_t *lookup;
INSIST(!free_now);
debug("start_lookup()");
lookup = ISC_LIST_HEAD(lookup_list);
if (lookup != NULL) {
setup_lookup(lookup);
do_lookup(lookup);
}
}
void
onrun_callback(isc_task_t *task, isc_event_t *event) {
UNUSED(task);
@@ -2270,7 +2268,7 @@ onrun_callback(isc_task_t *task, isc_event_t *event) {
*/
void
cancel_all(void) {
dig_lookup_t *l;
dig_lookup_t *l, *n;
dig_query_t *q;
debug("cancel_all()");
@@ -2281,21 +2279,26 @@ cancel_all(void) {
return;
}
cancel_now = ISC_TRUE;
l = ISC_LIST_HEAD(lookup_list);
while (l != NULL) {
if (l->timer != NULL)
isc_timer_detach(&l->timer);
q = ISC_LIST_HEAD(l->q);
if (current_lookup != NULL) {
if (current_lookup->timer != NULL)
isc_timer_detach(&current_lookup->timer);
q = ISC_LIST_HEAD(current_lookup->q);
while (q != NULL) {
debug("cancelling query %p, belonging to %p",
q, l);
q, current_lookup);
if (q->sock != NULL) {
isc_socket_cancel(q->sock, NULL,
ISC_SOCKCANCEL_ALL);
}
q = ISC_LIST_NEXT(q, link);
}
l = ISC_LIST_NEXT(l, link);
}
l = ISC_LIST_HEAD(lookup_list);
while (l != NULL) {
n = ISC_LIST_NEXT(l, link);
ISC_LIST_DEQUEUE(lookup_list, l, link);
try_clear_lookup(l);
l = n;
}
UNLOCK_LOOKUP;
}
@@ -2313,6 +2316,7 @@ xfree_lists(void) {
REQUIRE(sendcount == 0);
INSIST(ISC_LIST_HEAD(lookup_list) == NULL);
INSIST(current_lookup == NULL);
INSIST(!free_now);
free_now = ISC_TRUE;