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-rw-r--r--lib/hostip.c27
-rw-r--r--lib/hostip.h4
-rw-r--r--lib/multi.c58
3 files changed, 50 insertions, 39 deletions
diff --git a/lib/hostip.c b/lib/hostip.c
index 3765ca1cd..c137a19c3 100644
--- a/lib/hostip.c
+++ b/lib/hostip.c
@@ -5,7 +5,7 @@
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
- * Copyright (C) 1998 - 2012, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 1998 - 2013, Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
@@ -681,12 +681,14 @@ clean_up:
* Curl_resolv_unlock() unlocks the given cached DNS entry. When this has been
* made, the struct may be destroyed due to pruning. It is important that only
* one unlock is made for each Curl_resolv() call.
+ *
+ * May be called with 'data' == NULL for global cache.
*/
void Curl_resolv_unlock(struct SessionHandle *data, struct Curl_dns_entry *dns)
{
DEBUGASSERT(dns && (dns->inuse>0));
- if(data->share)
+ if(data && data->share)
Curl_share_lock(data, CURL_LOCK_DATA_DNS, CURL_LOCK_ACCESS_SINGLE);
dns->inuse--;
@@ -697,7 +699,7 @@ void Curl_resolv_unlock(struct SessionHandle *data, struct Curl_dns_entry *dns)
free(dns);
}
- if(data->share)
+ if(data && data->share)
Curl_share_unlock(data, CURL_LOCK_DATA_DNS);
}
@@ -734,22 +736,23 @@ static int hostcache_inuse(void *data, void *hc)
return 1; /* free all entries */
}
-void Curl_hostcache_clean(struct SessionHandle *data)
+/*
+ * Curl_hostcache_clean()
+ *
+ * This _can_ be called with 'data' == NULL but then of course no locking
+ * can be done!
+ */
+
+void Curl_hostcache_clean(struct SessionHandle *data,
+ struct curl_hash *hash)
{
/* Entries added to the hostcache with the CURLOPT_RESOLVE function are
* still present in the cache with the inuse counter set to 1. Detect them
* and cleanup!
*/
- Curl_hash_clean_with_criterium(data->dns.hostcache, data, hostcache_inuse);
+ Curl_hash_clean_with_criterium(hash, data, hostcache_inuse);
}
-void Curl_hostcache_destroy(struct SessionHandle *data)
-{
- Curl_hostcache_clean(data);
- Curl_hash_destroy(data->dns.hostcache);
- data->dns.hostcachetype = HCACHE_NONE;
- data->dns.hostcache = NULL;
-}
CURLcode Curl_loadhostpairs(struct SessionHandle *data)
{
diff --git a/lib/hostip.h b/lib/hostip.h
index 9dd47baa6..a38f732a4 100644
--- a/lib/hostip.h
+++ b/lib/hostip.h
@@ -7,7 +7,7 @@
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
- * Copyright (C) 1998 - 2012, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 1998 - 2013, Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
@@ -203,7 +203,7 @@ CURLcode Curl_set_dns_servers(struct SessionHandle *data, char *servers);
/*
* Clean off entries from the cache
*/
-void Curl_hostcache_clean(struct SessionHandle *data);
+void Curl_hostcache_clean(struct SessionHandle *data, struct curl_hash *hash);
/*
* Destroy the hostcache of this handle.
diff --git a/lib/multi.c b/lib/multi.c
index 9653554f8..b64092a5d 100644
--- a/lib/multi.c
+++ b/lib/multi.c
@@ -334,7 +334,6 @@ CURLMcode curl_multi_add_handle(CURLM *multi_handle,
CURL *easy_handle)
{
struct curl_llist *timeoutlist;
- struct SessionHandle *easy;
struct Curl_multi *multi = (struct Curl_multi *)multi_handle;
struct SessionHandle *data = (struct SessionHandle *)easy_handle;
struct SessionHandle *new_closure = NULL;
@@ -348,8 +347,8 @@ CURLMcode curl_multi_add_handle(CURLM *multi_handle,
if(!GOOD_EASY_HANDLE(easy_handle))
return CURLM_BAD_EASY_HANDLE;
- /* Prevent users from adding same easy handle more than
- once and prevent adding to more than one multi stack */
+ /* Prevent users from adding same easy handle more than once and prevent
+ adding to more than one multi stack */
if(data->multi)
/* possibly we should create a new unique error code for this condition */
return CURLM_BAD_EASY_HANDLE;
@@ -359,13 +358,11 @@ CURLMcode curl_multi_add_handle(CURLM *multi_handle,
if(!timeoutlist)
return CURLM_OUT_OF_MEMORY;
- easy = data;
-
/* In case multi handle has no hostcache yet, allocate one */
if(!multi->hostcache) {
hostcache = Curl_mk_dnscache();
if(!hostcache) {
- free(easy);
+ free(data);
Curl_llist_destroy(timeoutlist, NULL);
return CURLM_OUT_OF_MEMORY;
}
@@ -377,7 +374,7 @@ CURLMcode curl_multi_add_handle(CURLM *multi_handle,
new_closure = (struct SessionHandle *)curl_easy_init();
if(!new_closure) {
Curl_hash_destroy(hostcache);
- free(easy);
+ free(data);
Curl_llist_destroy(timeoutlist, NULL);
return CURLM_OUT_OF_MEMORY;
}
@@ -408,18 +405,28 @@ CURLMcode curl_multi_add_handle(CURLM *multi_handle,
timeoutlist = NULL;
/* set the easy handle */
- multistate(easy, CURLM_STATE_INIT);
-
+ multistate(data, CURLM_STATE_INIT);
+
+ if((data->set.global_dns_cache) &&
+ (data->dns.hostcachetype != HCACHE_GLOBAL)) {
+ /* global dns cache was requested but still isn't */
+ struct curl_hash *global = Curl_global_host_cache_init();
+ if(global) {
+ /* only do this if the global cache init works */
+ data->dns.hostcache = global;
+ data->dns.hostcachetype = HCACHE_GLOBAL;
+ }
+ }
/* for multi interface connections, we share DNS cache automatically if the
easy handle's one is currently not set. */
- if(!easy->dns.hostcache ||
- (easy->dns.hostcachetype == HCACHE_NONE)) {
- easy->dns.hostcache = multi->hostcache;
- easy->dns.hostcachetype = HCACHE_MULTI;
+ else if(!data->dns.hostcache ||
+ (data->dns.hostcachetype == HCACHE_NONE)) {
+ data->dns.hostcache = multi->hostcache;
+ data->dns.hostcachetype = HCACHE_MULTI;
}
/* Point to the multi's connection cache */
- easy->state.conn_cache = multi->conn_cache;
+ data->state.conn_cache = multi->conn_cache;
/* This adds the new entry at the 'end' of the doubly-linked circular
list of SessionHandle structs to try and maintain a FIFO queue so
@@ -427,22 +434,22 @@ CURLMcode curl_multi_add_handle(CURLM *multi_handle,
/* We add this new entry last in the list. */
- easy->next = NULL; /* end of the line */
+ data->next = NULL; /* end of the line */
if(multi->easyp) {
struct SessionHandle *last = multi->easylp;
- last->next = easy;
- easy->prev = last;
- multi->easylp = easy; /* the new last node */
+ last->next = data;
+ data->prev = last;
+ multi->easylp = data; /* the new last node */
}
else {
/* first node, make both prev and next be NULL! */
- easy->next = NULL;
- easy->prev = NULL;
- multi->easylp = multi->easyp = easy; /* both first and last */
+ data->next = NULL;
+ data->prev = NULL;
+ multi->easylp = multi->easyp = data; /* both first and last */
}
/* make the SessionHandle refer back to this multi handle */
- Curl_easy_addmulti(easy_handle, multi_handle);
+ Curl_easy_addmulti(data, multi_handle);
/* Set the timeout for this handle to expire really soon so that it will
be taken care of even when this handle is added in the midst of operation
@@ -450,7 +457,7 @@ CURLMcode curl_multi_add_handle(CURLM *multi_handle,
sockets that time-out or have actions will be dealt with. Since this
handle has no action yet, we make sure it times out to get things to
happen. */
- Curl_expire(easy, 1);
+ Curl_expire(data, 1);
/* increase the node-counter */
multi->num_easy++;
@@ -1811,7 +1818,8 @@ CURLMcode curl_multi_cleanup(CURLM *multi_handle)
if(multi->closure_handle) {
multi->closure_handle->dns.hostcache = multi->hostcache;
- Curl_hostcache_clean(multi->closure_handle);
+ Curl_hostcache_clean(multi->closure_handle,
+ multi->closure_handle->dns.hostcache);
Curl_close(multi->closure_handle);
multi->closure_handle = NULL;
@@ -1833,7 +1841,7 @@ CURLMcode curl_multi_cleanup(CURLM *multi_handle)
nexteasy=easy->next;
if(easy->dns.hostcachetype == HCACHE_MULTI) {
/* clear out the usage of the shared DNS cache */
- Curl_hostcache_clean(easy);
+ Curl_hostcache_clean(easy, easy->dns.hostcache);
easy->dns.hostcache = NULL;
easy->dns.hostcachetype = HCACHE_NONE;
}