1 /* readw.c - deal with read waiters subsystem */
3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
5 * Copyright 2001-2006 The OpenLDAP Foundation.
6 * Portions Copyright 2001-2003 Pierangelo Masarati.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted only as authorized by the OpenLDAP
13 * A copy of this license is available in file LICENSE in the
14 * top-level directory of the distribution or, alternatively, at
15 * <http://www.OpenLDAP.org/license.html>.
18 * This work was initially developed by Pierangelo Masarati for inclusion
19 * in OpenLDAP Software.
25 #include <ac/string.h>
29 #include "back-monitor.h"
32 monitor_subsys_rww_destroy(
34 monitor_subsys_t *ms );
37 monitor_subsys_rww_update(
49 static struct monitor_rww_t {
53 { BER_BVC("cn=Read"), BER_BVNULL },
54 { BER_BVC("cn=Write"), BER_BVNULL },
55 { BER_BVNULL, BER_BVNULL }
59 monitor_subsys_rww_init(
61 monitor_subsys_t *ms )
71 ms->mss_destroy = monitor_subsys_rww_destroy;
72 ms->mss_update = monitor_subsys_rww_update;
74 mi = ( monitor_info_t * )be->be_private;
76 if ( monitor_cache_get( mi, &ms->mss_ndn, &e_conn ) ) {
77 Debug( LDAP_DEBUG_ANY,
78 "monitor_subsys_rww_init: "
79 "unable to get entry \"%s\"\n",
80 ms->mss_ndn.bv_val, 0, 0 );
84 mp = ( monitor_entry_t * )e_conn->e_private;
85 mp->mp_children = NULL;
86 ep = &mp->mp_children;
88 for ( i = 0; i < MONITOR_RWW_LAST; i++ ) {
89 char buf[ BACKMONITOR_BUFSIZE ];
90 struct berval nrdn, bv;
93 snprintf( buf, sizeof( buf ),
96 "structuralObjectClass: %s\n"
100 "createTimestamp: %s\n"
101 "modifyTimestamp: %s\n",
102 monitor_rww[ i ].rdn.bv_val,
104 mi->mi_oc_monitorCounterObject->soc_cname.bv_val,
105 mi->mi_oc_monitorCounterObject->soc_cname.bv_val,
106 &monitor_rww[ i ].rdn.bv_val[ STRLENOF( "cn=" ) ],
107 mi->mi_creatorsName.bv_val,
108 mi->mi_creatorsName.bv_val,
109 mi->mi_startTime.bv_val,
110 mi->mi_startTime.bv_val );
112 e = str2entry( buf );
114 Debug( LDAP_DEBUG_ANY,
115 "monitor_subsys_rww_init: "
116 "unable to create entry \"cn=Read,%s\"\n",
117 ms->mss_ndn.bv_val, 0, 0 );
121 /* steal normalized RDN */
122 dnRdn( &e->e_nname, &nrdn );
123 ber_dupbv( &monitor_rww[ i ].nrdn, &nrdn );
125 BER_BVSTR( &bv, "0" );
126 attr_merge_one( e, mi->mi_ad_monitorCounter, &bv, &bv );
128 mp = monitor_entrypriv_create();
132 e->e_private = ( void * )mp;
134 mp->mp_flags = ms->mss_flags \
135 | MONITOR_F_SUB | MONITOR_F_PERSISTENT;
137 if ( monitor_cache_add( mi, e ) ) {
138 Debug( LDAP_DEBUG_ANY,
139 "monitor_subsys_rww_init: "
140 "unable to add entry \"%s,%s\"\n",
141 monitor_rww[ i ].rdn.bv_val,
142 ms->mss_ndn.bv_val, 0 );
150 monitor_cache_release( mi, e_conn );
156 monitor_subsys_rww_destroy(
158 monitor_subsys_t *ms )
162 for ( i = 0; i < MONITOR_RWW_LAST; i++ ) {
163 ber_memfree_x( monitor_rww[ i ].nrdn.bv_val, NULL );
170 monitor_subsys_rww_update(
175 monitor_info_t *mi = (monitor_info_t *)op->o_bd->be_private;
178 long nconns, nwritewaiters, nreadwaiters;
184 char buf[] = "+9223372036854775807L";
188 assert( mi != NULL );
191 dnRdn( &e->e_nname, &nrdn );
193 for ( i = 0; !BER_BVISNULL( &monitor_rww[ i ].nrdn ); i++ ) {
194 if ( dn_match( &nrdn, &monitor_rww[ i ].nrdn ) ) {
199 if ( i == MONITOR_RWW_LAST ) {
200 return SLAP_CB_CONTINUE;
203 nconns = nwritewaiters = nreadwaiters = 0;
204 for ( c = connection_first( &connindex );
206 c = connection_next( c, &connindex ), nconns++ )
208 if ( c->c_writewaiter ) {
213 if ( c->c_currentber != NULL ) {
220 case MONITOR_RWW_READ:
224 case MONITOR_RWW_WRITE:
232 snprintf( buf, sizeof( buf ), "%ld", num );
234 a = attr_find( e->e_attrs, mi->mi_ad_monitorCounter );
237 if ( len > a->a_vals[ 0 ].bv_len ) {
238 a->a_vals[ 0 ].bv_val = ber_memrealloc( a->a_vals[ 0 ].bv_val, len + 1 );
239 if ( BER_BVISNULL( &a->a_vals[ 0 ] ) ) {
240 BER_BVZERO( &a->a_vals[ 0 ] );
241 return SLAP_CB_CONTINUE;
244 AC_MEMCPY( a->a_vals[ 0 ].bv_val, buf, len + 1 );
245 a->a_vals[ 0 ].bv_len = len;
247 /* FIXME: touch modifyTimestamp? */
249 return SLAP_CB_CONTINUE;