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fix cancel code

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This commit is contained in:
Michael Graff
1999-01-27 04:17:05 +00:00
parent 0fb1c498ec
commit d915cb8961
1 changed files with 101 additions and 69 deletions
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170
lib/isc/unix/socket.c
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@@ -2364,39 +2364,38 @@ isc_socket_cancel(isc_socket_t *sock, isc_task_t *task,
* its done event with status of "ISC_R_CANCELED".
* o Reset any state needed.
*/
if ((how & ISC_SOCKCANCEL_RECV) && !EMPTY(sock->recv_list)) {
rwintev_t * iev;
rwintev_t * next;
isc_socketevent_t * dev;
if (((how & ISC_SOCKCANCEL_RECV) == ISC_SOCKCANCEL_RECV)
&& !EMPTY(sock->recv_list)) {
rwintev_t *iev;
rwintev_t *next;
isc_socketevent_t *dev;
isc_task_t *current_task;
iev = HEAD(sock->recv_list);
next = NEXT(iev, link);
/*
* If the internal event was posted, try to remove
* it from the task's queue. If this fails,
* set the canceled flag, post the done event, and
* point "iev" to the next item on the list, and enter
* the while loop. Otherwise, just enter the while loop
* and let it dispatch the done event.
*/
if ((task == NULL || task == iev->task)
&& iev->posted && !iev->canceled) {
if (isc_task_purge(task, sock,
ISC_SOCKEVENT_INTRECV) == 0) {
if ((task == NULL || task == iev->task) && !iev->canceled) {
dev = iev->done_ev;
current_task = iev->task;
if (iev->posted) {
if (isc_task_purge(task, sock,
ISC_SOCKEVENT_INTRECV)
== 0) {
iev->canceled = ISC_TRUE;
/*
* pull off the done event and post it.
*/
dev = iev->done_ev;
iev->done_ev = NULL;
dev->result = ISC_R_CANCELED;
ISC_TASK_SEND(iev->task,
(isc_event_t **)&dev);
iev = NEXT(iev, link);
}
} else {
isc_event_free((isc_event_t **)&iev);
}
dev->result = ISC_R_CANCELED;
ISC_TASK_SEND(current_task, (isc_event_t **)&dev);
isc_task_detach(&current_task);
}
iev = next;
/*
* run through the event queue, posting done events with the
* canceled result, and freeing the internal event.
@@ -2413,43 +2412,38 @@ isc_socket_cancel(isc_socket_t *sock, isc_task_t *task,
}
}
if (how & ISC_SOCKCANCEL_SEND && !EMPTY(sock->send_list)) {
rwintev_t * iev;
rwintev_t * next;
isc_socketevent_t * dev;
if (((how & ISC_SOCKCANCEL_SEND) == ISC_SOCKCANCEL_SEND)
&& !EMPTY(sock->send_list)) {
rwintev_t *iev;
rwintev_t *next;
isc_socketevent_t *dev;
isc_task_t *current_task;
iev = HEAD(sock->send_list);
next = NEXT(iev, link);
/*
* If the internal event was posted, try to remove
* it from the task's queue. If this fails,
* set the canceled flag, post the done event, and
* point "iev" to the next item on the list, and enter
* the while loop. Otherwise, just enter the while loop
* and let it dispatch the done event.
*/
if ((task == NULL || task == iev->task)
&& iev->posted && !iev->canceled) {
if (isc_task_purge(task, sock,
ISC_SOCKEVENT_INTSEND) == 0) {
if ((task == NULL || task == iev->task) && !iev->canceled) {
dev = iev->done_ev;
current_task = iev->task;
if (iev->posted) {
if (isc_task_purge(current_task, sock,
ISC_SOCKEVENT_INTSEND)
== 0) {
iev->canceled = ISC_TRUE;
/*
* pull off the done event and post it.
*/
dev = iev->done_ev;
iev->done_ev = NULL;
dev->result = ISC_R_CANCELED;
ISC_TASK_SEND(iev->task,
(isc_event_t **)&dev);
iev = NEXT(iev, link);
}
} else {
isc_event_free((isc_event_t **)&iev);
}
dev->result = ISC_R_CANCELED;
ISC_TASK_SEND(current_task, (isc_event_t **)&dev);
isc_task_detach(&current_task);
}
/*
* run through the event queue, posting done events with the
* canceled result, and freeing the internal event.
*/
iev = next;
while (iev != NULL) {
next = NEXT(iev, link);
@@ -2462,37 +2456,49 @@ isc_socket_cancel(isc_socket_t *sock, isc_task_t *task,
}
}
if ((how & ISC_SOCKCANCEL_ACCEPT) && !EMPTY(sock->accept_list)) {
if (((how & ISC_SOCKCANCEL_ACCEPT) == ISC_SOCKCANCEL_ACCEPT)
&& !EMPTY(sock->accept_list)) {
ncintev_t * iev;
ncintev_t * next;
isc_socket_newconnev_t *dev;
isc_task_t *current_task;
iev = HEAD(sock->accept_list);
next = NEXT(iev, link);
if ((task == NULL || task == iev->task)
&& iev->posted && !iev->canceled) {
if (isc_task_purge(task, sock,
ISC_SOCKEVENT_INTACCEPT) == 0) {
iev->canceled = ISC_TRUE;
dev = iev->done_ev;
iev->done_ev = NULL;
dev->result = ISC_R_CANCELED;
dev->newsocket->references--;
free_socket(&dev->newsocket);
ISC_TASK_SEND(iev->task,
(isc_event_t **)&dev);
isc_task_detach(&iev->task);
dev = iev->done_ev;
current_task = iev->task;
iev = NEXT(iev, link);
if (iev->posted) {
if (isc_task_purge(task, sock,
ISC_SOCKEVENT_INTACCEPT)
== 0) {
iev->canceled = ISC_TRUE;
iev->done_ev = NULL;
}
} else {
isc_event_free((isc_event_t **)&iev);
}
dev->newsocket->references--;
free_socket(&dev->newsocket);
dev->result = ISC_R_CANCELED;
ISC_TASK_SEND(current_task, (isc_event_t **)&dev);
isc_task_detach(&current_task);
}
iev = next;
while (iev != NULL) {
next = NEXT(iev, link);
if (task == NULL || task == iev->task) {
dev = iev->done_ev;
iev->done_ev = NULL;
dev->newsocket->references--;
free_socket(&dev->newsocket);
DEQUEUE(sock->accept_list, iev, link);
@@ -2503,8 +2509,34 @@ isc_socket_cancel(isc_socket_t *sock, isc_task_t *task,
}
}
/* XXX implement */
if (how & ISC_SOCKCANCEL_CONNECT) {
if (((how & ISC_SOCKCANCEL_CONNECT) == ISC_SOCKCANCEL_CONNECT)
&& sock->connect_ev != NULL) {
cnintev_t * iev;
isc_socket_connev_t *dev;
isc_task_t *current_task;
iev = sock->connect_ev;
dev = iev->done_ev;
current_task = iev->task;
if ((task == NULL || task == iev->task) && !iev->canceled) {
if (iev->posted) {
if (isc_task_purge(task, sock,
ISC_SOCKEVENT_INTCONN)
== 0) {
iev->canceled = ISC_TRUE;
iev->done_ev = NULL;
}
} else {
isc_event_free((isc_event_t **)&iev);
}
sock->connect_ev = NULL;
dev->result = ISC_R_CANCELED;
ISC_TASK_SEND(current_task, (isc_event_t **)&dev);
isc_task_detach(&current_task);
}
}
/*