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Upstream queues ordered by c_connid

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In preparation for operation timeout events.
This commit is contained in:
Ondřej Kuzník 2017-11-22 12:55:20 +00:00 committed by Ondřej Kuzník
parent 0cfd4fca4d
commit a0ec50b33d
2 changed files with 39 additions and 3 deletions
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1
servers/lloadd/slap.h
View file

@ -275,6 +275,7 @@ struct Backend {
int b_bindavail, b_active, b_opening;
LDAP_CIRCLEQ_HEAD(ConnSt, Connection) b_conns, b_bindconns, b_preparing;
LDAP_LIST_HEAD(ConnectingSt, PendingConnection) b_connecting;
Connection *b_last_conn, *b_last_bindconn;
long b_max_pending, b_max_conn_pending;
long b_n_ops_executing;

41
servers/lloadd/upstream.c
View file

@ -300,10 +300,16 @@ upstream_bind_cb( Connection *c )
CONNECTION_UNLOCK_INCREF(c);
ldap_pvt_thread_mutex_lock( &b->b_mutex );
LDAP_CIRCLEQ_REMOVE( &b->b_preparing, c, c_next );
LDAP_CIRCLEQ_INSERT_HEAD( &b->b_conns, c, c_next );
b->b_active++;
b->b_opening--;
b->b_failed = 0;
if ( b->b_last_conn ) {
LDAP_CIRCLEQ_INSERT_AFTER(
&b->b_conns, b->b_last_conn, c, c_next );
} else {
LDAP_CIRCLEQ_INSERT_HEAD( &b->b_conns, c, c_next );
}
b->b_last_conn = c;
ldap_pvt_thread_mutex_unlock( &b->b_mutex );
backend_retry( b );
CONNECTION_LOCK_DECREF(c);
@ -407,20 +413,31 @@ upstream_finish( Connection *c )
if ( is_bindconn ) {
LDAP_CIRCLEQ_REMOVE( &b->b_preparing, c, c_next );
LDAP_CIRCLEQ_INSERT_HEAD( &b->b_bindconns, c, c_next );
c->c_state = LLOAD_C_READY;
c->c_type = LLOAD_C_BIND;
b->b_bindavail++;
b->b_opening--;
b->b_failed = 0;
if ( b->b_last_bindconn ) {
LDAP_CIRCLEQ_INSERT_AFTER(
&b->b_bindconns, b->b_last_bindconn, c, c_next );
} else {
LDAP_CIRCLEQ_INSERT_HEAD( &b->b_bindconns, c, c_next );
}
b->b_last_bindconn = c;
} else if ( bindconf.sb_method == LDAP_AUTH_NONE ) {
LDAP_CIRCLEQ_REMOVE( &b->b_preparing, c, c_next );
LDAP_CIRCLEQ_INSERT_HEAD( &b->b_conns, c, c_next );
c->c_state = LLOAD_C_READY;
c->c_type = LLOAD_C_OPEN;
b->b_active++;
b->b_opening--;
b->b_failed = 0;
if ( b->b_last_conn ) {
LDAP_CIRCLEQ_INSERT_AFTER( &b->b_conns, b->b_last_conn, c, c_next );
} else {
LDAP_CIRCLEQ_INSERT_HEAD( &b->b_conns, c, c_next );
}
b->b_last_conn = c;
} else {
rc = 1;
ldap_pvt_thread_pool_submit( &connection_pool, upstream_bind, c );
@ -769,9 +786,27 @@ upstream_destroy( Connection *c )
b->b_opening--;
b->b_failed++;
} else if ( c->c_type == LLOAD_C_BIND ) {
if ( c == b->b_last_bindconn ) {
Connection *prev =
LDAP_CIRCLEQ_LOOP_PREV( &b->b_bindconns, c, c_next );
if ( prev == c ) {
b->b_last_bindconn = NULL;
} else {
b->b_last_bindconn = prev;
}
}
LDAP_CIRCLEQ_REMOVE( &b->b_bindconns, c, c_next );
b->b_bindavail--;
} else {
if ( c == b->b_last_conn ) {
Connection *prev =
LDAP_CIRCLEQ_LOOP_PREV( &b->b_conns, c, c_next );
if ( prev == c ) {
b->b_last_conn = NULL;
} else {
b->b_last_conn = prev;
}
}
LDAP_CIRCLEQ_REMOVE( &b->b_conns, c, c_next );
b->b_active--;
}