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forward-port the onion queue thing

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svn:r3639
This commit is contained in:
Roger Dingledine
2005-02-20 09:27:48 +00:00
parent 596d65ec3b
commit 38f53cff41
1 changed files with 15 additions and 2 deletions
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src/or/onion.c
+15 -2
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@@ -15,13 +15,17 @@ const char onion_c_id[] = "$Id$";
struct onion_queue_t {
circuit_t *circ;
time_t when_added;
struct onion_queue_t *next;
};
/** global (within this file) variables used by the next few functions */
/** 5 seconds on the onion queue til we just send back a destroy */
#define ONIONQUEUE_WAIT_CUTOFF 5
/** Global (within this file) variables used by the next few functions */
static struct onion_queue_t *ol_list=NULL;
static struct onion_queue_t *ol_tail=NULL;
/** length of ol_list */
/** Length of ol_list */
static int ol_length=0;
/** Add <b>circ</b> to the end of ol_list and return 0, except
@@ -29,9 +33,11 @@ static int ol_length=0;
*/
int onion_pending_add(circuit_t *circ) {
struct onion_queue_t *tmp;
time_t now = time(NULL);
tmp = tor_malloc_zero(sizeof(struct onion_queue_t));
tmp->circ = circ;
tmp->when_added = now;
if (!ol_tail) {
tor_assert(!ol_list);
@@ -54,6 +60,13 @@ int onion_pending_add(circuit_t *circ) {
ol_length++;
ol_tail->next = tmp;
ol_tail = tmp;
while ((int)(now - ol_list->when_added) >= ONIONQUEUE_WAIT_CUTOFF) {
/* cull elderly requests. */
circ = ol_list->circ;
onion_pending_remove(ol_list->circ);
log_fn(LOG_INFO,"Circuit create request is too old; cancelling due to overload.");
circuit_mark_for_close(circ);
}
return 0;
}