Add link to FAQ entry on BDB tuning

[openldap] / servers / slapd / cancel.c

diff --git a/servers/slapd/cancel.c b/servers/slapd/cancel.c
index b1d8023e823feb4fcbd9a1879738bf428cdcb8a0..bc946160105d4381f64564e627b70bcc399f594d 100644 (file)
--- a/servers/slapd/cancel.c
+++ b/servers/slapd/cancel.c
@@ -2,7 +2,7 @@
 /* $OpenLDAP$ */
 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
  *
- * Copyright 1998-2004 The OpenLDAP Foundation.
+ * Copyright 1998-2006 The OpenLDAP Foundation.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -28,14 +28,14 @@
 #include <lber_pvt.h>
 #include <lutil.h>
 
+const struct berval slap_EXOP_CANCEL = BER_BVC(LDAP_EXOP_CANCEL);
+
 int cancel_extop( Operation *op, SlapReply *rs )
 {
        Operation *o;
        int rc;
-       int found = 0;
        int opid;
        BerElement *ber;
-       int i;
 
        assert( ber_bvcmp( &slap_EXOP_CANCEL, &op->ore_reqoid ) == 0 );
 
@@ -62,6 +62,9 @@ int cancel_extop( Operation *op, SlapReply *rs )
                return LDAP_PROTOCOL_ERROR;
        }
 
+       Statslog( LDAP_DEBUG_STATS, "%s CANCEL msg=%d\n",
+               op->o_log_prefix, opid, 0, 0, 0 );
+
        ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
        LDAP_STAILQ_FOREACH( o, &op->o_conn->c_pending_ops, o_next ) {
                if ( o->o_msgid == opid ) {
@@ -69,61 +72,52 @@ int cancel_extop( Operation *op, SlapReply *rs )
                        LDAP_STAILQ_NEXT(o, o_next) = NULL;
                        op->o_conn->c_n_ops_pending--;
                        slap_op_free( o );
-                       found = 1;
-                       break;
+                       ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
+                       return LDAP_SUCCESS;
                }
        }
-       ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
-
-       if ( found ) return LDAP_SUCCESS;
 
-       found = 0;
-       ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
        LDAP_STAILQ_FOREACH( o, &op->o_conn->c_ops, o_next ) {
                if ( o->o_msgid == opid ) {
-                       found = 1;
+                       o->o_abandon = 1;
                        break;
                }
        }
 
-       if ( !found ) {
-               for ( i = 0; i < nbackends; i++ ) {
-                       op->o_bd = &backends[i];
-                       if( !op->o_bd->be_cancel ) continue;
+       ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
 
-                       ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
+       if ( o ) {
+               if ( o->o_cancel != SLAP_CANCEL_NONE ) {
+                       rs->sr_text = "message ID already being cancelled";
+                       return LDAP_PROTOCOL_ERROR;
+               }
+
+               o->o_cancel = SLAP_CANCEL_REQ;
+
+               LDAP_STAILQ_FOREACH( op->o_bd, &backendDB, be_next ) {
+                       if( !op->o_bd->be_cancel ) continue;
 
                        op->oq_cancel.rs_msgid = opid;
                        if ( op->o_bd->be_cancel( op, rs ) == LDAP_SUCCESS ) {
                                return LDAP_SUCCESS;
                        }
-                       ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
                }
-               ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
-               rs->sr_text = "message ID not found";
-               return LDAP_NO_SUCH_OPERATION;
-       }
-
-       if ( op->o_cancel != SLAP_CANCEL_NONE ) {
-               ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
-               rs->sr_text = "message ID already being cancelled";
-               return LDAP_PROTOCOL_ERROR;
-       }
 
-       op->o_cancel = SLAP_CANCEL_REQ;
-       ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
+               while ( o->o_cancel == SLAP_CANCEL_REQ ) {
+                       ldap_pvt_thread_yield();
+               }
 
-       while ( op->o_cancel == SLAP_CANCEL_REQ ) {
-               ldap_pvt_thread_yield();
-       }
+               if ( o->o_cancel == SLAP_CANCEL_ACK ) {
+                       rc = LDAP_SUCCESS;
+               } else {
+                       rc = o->o_cancel;
+               }
 
-       if ( op->o_cancel == SLAP_CANCEL_ACK ) {
-               rc = LDAP_SUCCESS;
+               o->o_cancel = SLAP_CANCEL_DONE;
        } else {
-               rc = op->o_cancel;
+               rs->sr_text = "message ID not found";
+               rc = LDAP_NO_SUCH_OPERATION;
        }
 
-       op->o_cancel = SLAP_CANCEL_DONE;
-
        return rc;
 }