/*
* Function: prldap_allocate_map()
* Description: allocate a thread-private data map to use for a new
* LDAP session handle.
* Returns: a pointer to the TPD map or NULL if none available.
*/
static PRLDAP_TPDMap *
prldap_allocate_map( LDAP *ld )
{
PRLDAP_TPDMap *map, *prevmap;
PR_Lock( prldap_map_mutex );
/*
* first look for a map that is already allocated but free to be re-used
*/
prevmap = NULL;
for ( map = prldap_map_list; map != NULL; map = map->prtm_next ) {
if ( map->prtm_ld == NULL ) {
break;
}
prevmap = map;
}
/*
* if none was found (map == NULL), try to allocate a new one and add it
* to the end of our global list.
*/
if ( map == NULL ) {
PRUintn tpdindex;
tpdindex = prldap_new_tpdindex();
map = (PRLDAP_TPDMap *)PR_Malloc( sizeof( PRLDAP_TPDMap ));
if ( map != NULL ) {
map->prtm_index = tpdindex;
map->prtm_next = NULL;
if ( prevmap == NULL ) {
prldap_map_list = map;
} else {
prevmap->prtm_next = map;
}
}
}
if ( map != NULL ) {
map->prtm_ld = ld; /* now marked as "in use" */
/*
* If old thread-private error information exists, reset it. It may
* have been left behind by an old LDAP session that was used by
* this thread but disposed of by a different thread.
*/
if ( NULL != prldap_get_thread_private( map->prtm_index )) {
prldap_set_ld_error( LDAP_SUCCESS, NULL, NULL, map );
}
}
PR_Unlock( prldap_map_mutex );
return( map );
}
/*
* Function: prldap_allocate_map()
* Description: allocate a thread-private data map to use for a new
* LDAP session handle.
* Returns: a pointer to the TPD map or NULL if none available.
*/
static PRLDAP_TPDMap *
prldap_allocate_map( LDAP *ld )
{
PRLDAP_TPDMap *map, *prevmap;
PR_Lock( prldap_map_mutex );
/*
* first look for a map that is already allocated but free to be re-used
*/
prevmap = NULL;
for ( map = prldap_map_list; map != NULL; map = map->prtm_next ) {
if ( map->prtm_ld == NULL ) {
break;
}
prevmap = map;
}
/*
* if none we found (map == NULL), try to allocate a new one and add it
* to the end of our global list.
*/
if ( map == NULL ) {
PRUintn tpdindex;
tpdindex = prldap_new_tpdindex();
map = (PRLDAP_TPDMap *)PR_Malloc( sizeof( PRLDAP_TPDMap ));
if ( map != NULL ) {
map->prtm_index = tpdindex;
map->prtm_next = NULL;
if ( prevmap == NULL ) {
prldap_map_list = map;
} else {
prevmap->prtm_next = map;
}
}
}
if ( map != NULL ) {
map->prtm_ld = ld; /* now marked as "in use" */
/* since we are reusing...reset */
/* to initial state */
(void)prldap_set_thread_private( map->prtm_index, NULL );
}
PR_Unlock( prldap_map_mutex );
return( map );
}