diff options
Diffstat (limited to 'ares/ares_timeout.c')
| -rw-r--r-- | ares/ares_timeout.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/ares/ares_timeout.c b/ares/ares_timeout.c index 496db8459..12b93b044 100644 --- a/ares/ares_timeout.c +++ b/ares/ares_timeout.c @@ -26,23 +26,34 @@ #include "ares.h" #include "ares_private.h" +/* WARNING: Beware that this is linear in the number of outstanding + * requests! You are probably far better off just calling ares_process() + * once per second, rather than calling ares_timeout() to figure out + * when to next call ares_process(). + */ struct timeval *ares_timeout(ares_channel channel, struct timeval *maxtv, struct timeval *tvbuf) { struct query *query; + struct list_node* list_head; + struct list_node* list_node; time_t now; time_t offset, min_offset; /* these use time_t since some 32 bit systems still use 64 bit time_t! (like VS2005) */ /* No queries, no timeout (and no fetch of the current time). */ - if (!channel->queries) + if (ares__is_list_empty(&(channel->all_queries))) return maxtv; /* Find the minimum timeout for the current set of queries. */ time(&now); min_offset = -1; - for (query = channel->queries; query; query = query->next) + + list_head = &(channel->all_queries); + for (list_node = list_head->next; list_node != list_head; + list_node = list_node->next) { + query = list_node->data; if (query->timeout == 0) continue; offset = query->timeout - now; |