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rework connection handling on multiple binds with the same connection

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This commit is contained in:
Pierangelo Masarati 2006-02-11 17:40:28 +00:00
parent 7f0a047c37
commit 53c40fac27
4 changed files with 46 additions and 24 deletions
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7
servers/slapd/back-meta/back-meta.h
View File

@ -371,7 +371,12 @@ meta_back_conn_cmp(
const void *c2 );
extern int
meta_back_conn_dup(
meta_back_dnconn_cmp(
const void *c1,
const void *c2 );
extern int
meta_back_dnconn_dup(
void *c1,
void *c2 );

4
servers/slapd/back-meta/bind.c
View File

@ -205,12 +205,12 @@ retry_lock:;
assert( mc->mc_refcnt == 1 );
mc = avl_delete( &mi->mi_conninfo.lai_tree, (caddr_t)mc,
meta_back_conn_cmp );
meta_back_dnconn_cmp );
assert( mc != NULL );
ber_bvreplace( &mc->mc_local_ndn, &op->o_req_ndn );
lerr = avl_insert( &mi->mi_conninfo.lai_tree, (caddr_t)mc,
meta_back_conn_cmp, meta_back_conn_dup );
meta_back_dnconn_cmp, meta_back_dnconn_dup );
ldap_pvt_thread_mutex_unlock( &mi->mi_conninfo.lai_mutex );
if ( lerr == -1 ) {
for ( i = 0; i < mi->mi_ntargets; ++i ) {

50
servers/slapd/back-meta/conn.c
View File

@ -39,6 +39,33 @@
*/
#define PRINT_CONNTREE 0
/*
* meta_back_dnconn_cmp
*
* compares two struct metaconn based on the value of the conn pointer
* and of the local DN; used by avl stuff
*/
int
meta_back_dnconn_cmp(
const void *c1,
const void *c2 )
{
metaconn_t *mc1 = ( metaconn_t * )c1;
metaconn_t *mc2 = ( metaconn_t * )c2;
int rc;
/* If local DNs don't match, it is definitely not a match */
/* For shared sessions, conn is NULL. Only explicitly
* bound sessions will have non-NULL conn.
*/
rc = SLAP_PTRCMP( mc1->mc_conn, mc2->mc_conn );
if ( rc == 0 ) {
rc = ber_bvcmp( &mc1->mc_local_ndn, &mc2->mc_local_ndn );
}
return rc;
}
/*
* meta_back_conn_cmp
*
@ -52,14 +79,7 @@ meta_back_conn_cmp(
{
metaconn_t *mc1 = ( metaconn_t * )c1;
metaconn_t *mc2 = ( metaconn_t * )c2;
int rc;
/* If local DNs don't match, it is definitely not a match */
rc = ber_bvcmp( &mc1->mc_local_ndn, &mc2->mc_local_ndn );
if ( rc ) {
return rc;
}
/* For shared sessions, conn is NULL. Only explicitly
* bound sessions will have non-NULL conn.
*/
@ -67,13 +87,13 @@ meta_back_conn_cmp(
}
/*
* meta_back_conn_dup
* meta_back_dnconn_dup
*
* returns -1 in case a duplicate struct metaconn has been inserted;
* used by avl stuff
*/
int
meta_back_conn_dup(
meta_back_dnconn_dup(
void *c1,
void *c2 )
{
@ -81,8 +101,8 @@ meta_back_conn_dup(
metaconn_t *mc2 = ( metaconn_t * )c2;
/* Cannot have more than one shared session with same DN */
if ( dn_match( &mc1->mc_local_ndn, &mc2->mc_local_ndn ) &&
mc1->mc_conn == mc2->mc_conn )
if ( mc1->mc_conn == mc2->mc_conn &&
dn_match( &mc1->mc_local_ndn, &mc2->mc_local_ndn ) )
{
return -1;
}
@ -790,7 +810,7 @@ meta_back_getconn(
retry_lock:
ldap_pvt_thread_mutex_lock( &mi->mi_conninfo.lai_mutex );
mc = (metaconn_t *)avl_find( mi->mi_conninfo.lai_tree,
(caddr_t)&mc_curr, meta_back_conn_cmp );
(caddr_t)&mc_curr, meta_back_dnconn_cmp );
if ( mc ) {
if ( mc->mc_tainted ) {
rs->sr_err = LDAP_UNAVAILABLE;
@ -992,7 +1012,7 @@ retry_lock:
if ( !( sendok & LDAP_BACK_BINDING ) ) {
ldap_pvt_thread_mutex_lock( &mi->mi_conninfo.lai_mutex );
mc = (metaconn_t *)avl_find( mi->mi_conninfo.lai_tree,
(caddr_t)&mc_curr, meta_back_conn_cmp );
(caddr_t)&mc_curr, meta_back_dnconn_cmp );
if ( mc != NULL ) {
mc->mc_refcnt++;
}
@ -1158,7 +1178,7 @@ done:;
*/
ldap_pvt_thread_mutex_lock( &mi->mi_conninfo.lai_mutex );
err = avl_insert( &mi->mi_conninfo.lai_tree, ( caddr_t )mc,
meta_back_conn_cmp, meta_back_conn_dup );
meta_back_dnconn_cmp, meta_back_dnconn_dup );
#if PRINT_CONNTREE > 0
myprint( mi->mi_conninfo.lai_tree );
@ -1218,7 +1238,7 @@ meta_back_release_conn(
LDAP_BACK_CONN_BINDING_CLEAR( mc );
if ( mc->mc_refcnt == 0 && mc->mc_tainted ) {
(void)avl_delete( &mi->mi_conninfo.lai_tree, ( caddr_t )mc,
meta_back_conn_cmp );
meta_back_dnconn_cmp );
meta_back_conn_free( mc );
}
ldap_pvt_thread_mutex_unlock( &mi->mi_conninfo.lai_mutex );

9
servers/slapd/back-meta/unbind.c
View File

@ -49,14 +49,10 @@ meta_back_conn_destroy(
BER_BVISNULL( &conn->c_ndn ) ? "" : conn->c_ndn.bv_val, 0 );
mc_curr.mc_conn = conn;
mc_curr.mc_local_ndn = conn->c_ndn;
ldap_pvt_thread_mutex_lock( &mi->mi_conninfo.lai_mutex );
mc = avl_delete( &mi->mi_conninfo.lai_tree, ( caddr_t )&mc_curr,
meta_back_conn_cmp );
ldap_pvt_thread_mutex_unlock( &mi->mi_conninfo.lai_mutex );
if ( mc ) {
while ( ( mc = avl_delete( &mi->mi_conninfo.lai_tree, ( caddr_t )&mc_curr, meta_back_conn_cmp ) ) != NULL )
{
Debug( LDAP_DEBUG_TRACE,
"=>meta_back_conn_destroy: destroying conn %ld\n",
LDAP_BACK_PCONN_ID( mc->mc_conn ), 0, 0 );
@ -65,6 +61,7 @@ meta_back_conn_destroy(
meta_back_conn_free( mc );
}
ldap_pvt_thread_mutex_unlock( &mi->mi_conninfo.lai_mutex );
/*
* Cleanup rewrite session