void Curl_conncache_remove_conn(struct connectdata *conn, bool lock)
{
struct Curl_easy *data = conn->data;
struct connectbundle *bundle = conn->bundle;
struct conncache *connc = data->state.conn_cache;
/* The bundle pointer can be NULL, since this function can be called
due to a failed connection attempt, before being added to a bundle */
if(bundle) {
if(lock) {
CONN_LOCK(data);
}
bundle_remove_conn(bundle, conn);
if(bundle->num_connections == 0)
conncache_remove_bundle(connc, bundle);
conn->bundle = NULL; /* removed from it */
if(connc) {
connc->num_conn--;
DEBUGF(infof(data, "The cache now contains %zu members\n",
connc->num_conn));
}
if(lock) {
CONN_UNLOCK(data);
}
}
}
/*
* This function finds the connection in the connection cache that has been
* unused for the longest time and extracts that from the bundle.
*
* Returns the pointer to the connection, or NULL if none was found.
*/
struct connectdata *
Curl_conncache_extract_oldest(struct Curl_easy *data)
{
struct conncache *connc = data->state.conn_cache;
struct curl_hash_iterator iter;
struct curl_llist_element *curr;
struct curl_hash_element *he;
timediff_t highscore =- 1;
timediff_t score;
struct curltime now;
struct connectdata *conn_candidate = NULL;
struct connectbundle *bundle;
struct connectbundle *bundle_candidate = NULL;
now = Curl_now();
CONN_LOCK(data);
Curl_hash_start_iterate(&connc->hash, &iter);
he = Curl_hash_next_element(&iter);
while(he) {
struct connectdata *conn;
bundle = he->ptr;
curr = bundle->conn_list.head;
while(curr) {
conn = curr->ptr;
if(!CONN_INUSE(conn)) {
/* Set higher score for the age passed since the connection was used */
score = Curl_timediff(now, conn->now);
if(score > highscore) {
highscore = score;
conn_candidate = conn;
bundle_candidate = bundle;
}
}
curr = curr->next;
}
he = Curl_hash_next_element(&iter);
}
if(conn_candidate) {
/* remove it to prevent another thread from nicking it */
bundle_remove_conn(bundle_candidate, conn_candidate);
connc->num_conn--;
DEBUGF(infof(data, "The cache now contains %zu members\n",
connc->num_conn));
conn_candidate->data = data; /* associate! */
}
CONN_UNLOCK(data);
return conn_candidate;
}
/*
* This function finds the connection in the connection bundle that has been
* unused for the longest time.
*
* Does not lock the connection cache!
*
* Returns the pointer to the oldest idle connection, or NULL if none was
* found.
*/
struct connectdata *
Curl_conncache_extract_bundle(struct Curl_easy *data,
struct connectbundle *bundle)
{
struct curl_llist_element *curr;
timediff_t highscore = -1;
timediff_t score;
struct curltime now;
struct connectdata *conn_candidate = NULL;
struct connectdata *conn;
(void)data;
now = Curl_now();
curr = bundle->conn_list.head;
while(curr) {
conn = curr->ptr;
if(!CONN_INUSE(conn)) {
/* Set higher score for the age passed since the connection was used */
score = Curl_timediff(now, conn->now);
if(score > highscore) {
highscore = score;
conn_candidate = conn;
}
}
curr = curr->next;
}
if(conn_candidate) {
/* remove it to prevent another thread from nicking it */
bundle_remove_conn(bundle, conn_candidate);
data->state.conn_cache->num_conn--;
DEBUGF(infof(data, "The cache now contains %zu members\n",
data->state.conn_cache->num_conn));
conn_candidate->data = data; /* associate! */
}
return conn_candidate;
}
void Curl_conncache_remove_conn(struct conncache *connc,
struct connectdata *conn)
{
struct connectbundle *bundle = conn->bundle;
/* The bundle pointer can be NULL, since this function can be called
due to a failed connection attempt, before being added to a bundle */
if(bundle) {
bundle_remove_conn(bundle, conn);
if(bundle->num_connections == 0) {
conncache_remove_bundle(connc, bundle);
}
if(connc) {
connc->num_connections--;
DEBUGF(infof(conn->data, "The cache now contains %"
CURL_FORMAT_CURL_OFF_TU " members\n",
(curl_off_t) connc->num_connections));
}
}
}
