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-rw-r--r--lib/multi.c104
1 files changed, 64 insertions, 40 deletions
diff --git a/lib/multi.c b/lib/multi.c
index 4bf74a746..5a5470246 100644
--- a/lib/multi.c
+++ b/lib/multi.c
@@ -192,6 +192,9 @@ static void moveHandleFromRecvToDonePipeline(struct SessionHandle *handle,
struct connectdata *conn);
static bool isHandleAtHead(struct SessionHandle *handle,
struct curl_llist *pipeline);
+static CURLMcode add_next_timeout(struct timeval now,
+ struct Curl_multi *multi,
+ struct SessionHandle *d);
#ifdef DEBUGBUILD
static const char * const statename[]={
@@ -1690,37 +1693,9 @@ CURLMcode curl_multi_perform(CURLM *multi_handle, int *running_handles)
*/
do {
multi->timetree = Curl_splaygetbest(now, multi->timetree, &t);
- if(t) {
- struct SessionHandle *d = t->payload;
- struct timeval *tv = &d->state.expiretime;
- struct curl_llist *list = d->state.timeoutlist;
- struct curl_llist_element *e;
-
- /* move over the timeout list for this specific handle and remove all
- timeouts that are now passed tense and store the next pending
- timeout in *tv */
- for(e = list->head; e; ) {
- struct curl_llist_element *n = e->next;
- if(curlx_tvdiff(*(struct timeval *)e->ptr, now) < 0)
- /* remove outdated entry */
- Curl_llist_remove(list, e, NULL);
- e = n;
- }
- if(!list->size) {
- /* clear the expire times within the handles that we remove from the
- splay tree */
- tv->tv_sec = 0;
- tv->tv_usec = 0;
- }
- else {
- e = list->head;
- /* copy the first entry to 'tv' */
- memcpy(tv, e->ptr, sizeof(*tv));
-
- /* remove first entry from list */
- Curl_llist_remove(list, e, NULL);
- }
- }
+ if(t)
+ /* the removed may have another timeout in queue */
+ (void)add_next_timeout(now, multi, t->payload);
} while(t);
@@ -1992,6 +1967,62 @@ static void singlesocket(struct Curl_multi *multi,
easy->numsocks = num;
}
+/*
+ * add_next_timeout()
+ *
+ * Each SessionHandle has a list of timeouts. The add_next_timeout() is called
+ * when it has just been removed from the splay tree because the timeout has
+ * expired. This function is then to advance in the list to pick the next
+ * timeout to use (skip the already expired ones) and add this node back to
+ * the splay tree again.
+ *
+ * The splay tree only has each sessionhandle as a single node and the nearest
+ * timeout is used to sort it on.
+ */
+static CURLMcode add_next_timeout(struct timeval now,
+ struct Curl_multi *multi,
+ struct SessionHandle *d)
+{
+ struct timeval *tv = &d->state.expiretime;
+ struct curl_llist *list = d->state.timeoutlist;
+ struct curl_llist_element *e;
+
+ /* move over the timeout list for this specific handle and remove all
+ timeouts that are now passed tense and store the next pending
+ timeout in *tv */
+ for(e = list->head; e; ) {
+ struct curl_llist_element *n = e->next;
+ long diff = curlx_tvdiff(*(struct timeval *)e->ptr, now);
+ if(diff <= 0)
+ /* remove outdated entry */
+ Curl_llist_remove(list, e, NULL);
+ else
+ /* the list is sorted so get out on the first mismatch */
+ break;
+ e = n;
+ }
+ if(!list->size) {
+ /* clear the expire times within the handles that we remove from the
+ splay tree */
+ tv->tv_sec = 0;
+ tv->tv_usec = 0;
+ }
+ else {
+ e = list->head;
+ /* copy the first entry to 'tv' */
+ memcpy(tv, e->ptr, sizeof(*tv));
+
+ /* remove first entry from list */
+ Curl_llist_remove(list, e, NULL);
+
+ /* insert this node again into the splay */
+ multi->timetree = Curl_splayinsert(*tv, multi->timetree,
+ &d->state.timenode);
+ }
+ return CURLM_OK;
+}
+
+
static CURLMcode multi_socket(struct Curl_multi *multi,
bool checkall,
curl_socket_t s,
@@ -2106,15 +2137,8 @@ static CURLMcode multi_socket(struct Curl_multi *multi,
}
multi->timetree = Curl_splaygetbest(now, multi->timetree, &t);
- if(t) {
- /* assign 'data' to be the easy handle we just removed from the splay
- tree */
- data = t->payload;
- /* clear the expire time within the handle we removed from the
- splay tree */
- data->state.expiretime.tv_sec = 0;
- data->state.expiretime.tv_usec = 0;
- }
+ if(t)
+ (void)add_next_timeout(now, multi, t->payload);
} while(t);