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ITS#6413 Ensure task don't get queued while being freed after config change.

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This commit is contained in:
Rein Tollevik 2009-12-03 21:56:48 +00:00
parent 8373d9f9fc
commit 6c406f1737
1 changed files with 25 additions and 11 deletions
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36
servers/slapd/syncrepl.c
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@ -4757,6 +4757,8 @@ syncrepl_config( ConfigArgs *c )
si = *sip;
if ( c->valx == -1 || i == c->valx ) {
*sip = si->si_next;
si->si_ctype = -1;
si->si_next = NULL;
/* If the task is currently active, we have to leave
* it running. It will exit on its own. This will only
* happen when running on the cn=config DB.
@ -4765,22 +4767,34 @@ syncrepl_config( ConfigArgs *c )
if ( ldap_pvt_thread_mutex_trylock( &si->si_mutex )) {
isrunning = 1;
} else {
/* There is no active thread, but we must still
* ensure that no thread is (or will be) queued
* while we removes the task.
*/
struct re_s *re = si->si_re;
si->si_re = NULL;
if ( si->si_conn ) {
/* If there's a persistent connection, it may
* already have a thread queued. We know it's
* not active, so it must be pending and we
* can simply cancel it now.
*/
ldap_pvt_thread_pool_retract( &connection_pool,
si->si_re->routine, si->si_re );
connection_client_stop( si->si_conn );
si->si_conn = NULL;
}
ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
if ( ldap_pvt_runqueue_isrunning( &slapd_rq, re ) ) {
ldap_pvt_runqueue_stoptask( &slapd_rq, re );
isrunning = 1;
}
ldap_pvt_runqueue_remove( &slapd_rq, re );
ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
if ( ldap_pvt_thread_pool_retract( &connection_pool,
re->routine, re ) > 0 )
isrunning = 0;
ldap_pvt_thread_mutex_unlock( &si->si_mutex );
}
}
if ( isrunning ) {
si->si_ctype = -1;
si->si_next = NULL;
} else {
if ( !isrunning ) {
syncinfo_free( si, 0 );
}
if ( i == c->valx )