1 /* readw.c - deal with read waiters subsystem */
3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
5 * Copyright 1998-2003 The OpenLDAP Foundation.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted only as authorized by the OpenLDAP
12 * A copy of this license is available in file LICENSE in the
13 * top-level directory of the distribution or, alternatively, at
14 * <http://www.OpenLDAP.org/license.html>.
17 * This work was initially developed by Pierangelo Masarati for inclusion
18 * in OpenLDAP Software.
20 /* This is an altered version */
22 * Copyright 2001, Pierangelo Masarati, All rights reserved. <ando@sys-net.it>
24 * This work has beed deveolped for the OpenLDAP Foundation
25 * in the hope that it may be useful to the Open Source community,
26 * but WITHOUT ANY WARRANTY.
28 * Permission is granted to anyone to use this software for any purpose
29 * on any computer system, and to alter it and redistribute it, subject
30 * to the following restrictions:
32 * 1. The author and SysNet s.n.c. are not responsible for the consequences
33 * of use of this software, no matter how awful, even if they arise from
36 * 2. The origin of this software must not be misrepresented, either by
37 * explicit claim or by omission. Since few users ever read sources,
38 * credits should appear in the documentation.
40 * 3. Altered versions must be plainly marked as such, and must not be
41 * misrepresented as being the original software. Since few users
42 * ever read sources, credits should appear in the documentation.
43 * SysNet s.n.c. cannot be responsible for the consequences of the
46 * 4. This notice may not be removed or altered.
52 #include <ac/string.h>
56 #include "back-monitor.h"
59 monitor_subsys_rww_init(
63 struct monitorinfo *mi;
65 Entry *e, *e_tmp, *e_conn;
66 struct monitorentrypriv *mp;
67 char buf[ BACKMONITOR_BUFSIZE ];
72 mi = ( struct monitorinfo * )be->be_private;
74 if ( monitor_cache_get( mi,
75 &monitor_subsys[SLAPD_MONITOR_RWW].mss_ndn, &e_conn ) ) {
77 LDAP_LOG( OPERATION, CRIT,
78 "monitor_subsys_rww_init: "
79 "unable to get entry '%s'\n",
80 monitor_subsys[SLAPD_MONITOR_RWW].mss_ndn.bv_val, 0, 0 );
82 Debug( LDAP_DEBUG_ANY,
83 "monitor_subsys_rww_init: "
84 "unable to get entry '%s'\n%s%s",
85 monitor_subsys[SLAPD_MONITOR_RWW].mss_ndn.bv_val,
96 snprintf( buf, sizeof( buf ),
99 "structuralObjectClass: %s\n"
101 "createTimestamp: %s\n"
102 "modifyTimestamp: %s\n",
103 monitor_subsys[SLAPD_MONITOR_RWW].mss_dn.bv_val,
104 mi->mi_oc_monitorCounterObject->soc_cname.bv_val,
105 mi->mi_oc_monitorCounterObject->soc_cname.bv_val,
106 mi->mi_startTime.bv_val,
107 mi->mi_startTime.bv_val );
109 e = str2entry( buf );
112 LDAP_LOG( OPERATION, CRIT,
113 "monitor_subsys_rww_init: "
114 "unable to create entry 'cn=Read,%s'\n",
115 monitor_subsys[SLAPD_MONITOR_RWW].mss_ndn.bv_val, 0, 0 );
117 Debug( LDAP_DEBUG_ANY,
118 "monitor_subsys_rww_init: "
119 "unable to create entry 'cn=Read,%s'\n",
120 monitor_subsys[SLAPD_MONITOR_RWW].mss_ndn.bv_val, 0, 0 );
127 attr_merge_one( e, mi->mi_ad_monitorCounter, &bv, NULL );
129 mp = ( struct monitorentrypriv * )ch_calloc( sizeof( struct monitorentrypriv ), 1 );
130 e->e_private = ( void * )mp;
132 mp->mp_children = NULL;
133 mp->mp_info = &monitor_subsys[SLAPD_MONITOR_RWW];
134 mp->mp_flags = monitor_subsys[SLAPD_MONITOR_RWW].mss_flags \
135 | MONITOR_F_SUB | MONITOR_F_PERSISTENT;
137 if ( monitor_cache_add( mi, e ) ) {
139 LDAP_LOG( OPERATION, CRIT,
140 "monitor_subsys_rww_init: "
141 "unable to add entry 'cn=Read,%s'\n",
142 monitor_subsys[SLAPD_MONITOR_RWW].mss_ndn.bv_val, 0, 0 );
144 Debug( LDAP_DEBUG_ANY,
145 "monitor_subsys_rww_init: "
146 "unable to add entry 'cn=Read,%s'\n",
147 monitor_subsys[SLAPD_MONITOR_RWW].mss_ndn.bv_val, 0, 0 );
157 snprintf( buf, sizeof( buf ),
160 "structuralObjectClass: %s\n"
162 "createTimestamp: %s\n"
163 "modifyTimestamp: %s\n",
164 monitor_subsys[SLAPD_MONITOR_RWW].mss_dn.bv_val,
165 mi->mi_oc_monitorCounterObject->soc_cname.bv_val,
166 mi->mi_oc_monitorCounterObject->soc_cname.bv_val,
167 mi->mi_startTime.bv_val,
168 mi->mi_startTime.bv_val );
170 e = str2entry( buf );
173 LDAP_LOG( OPERATION, CRIT,
174 "monitor_subsys_rww_init: "
175 "unable to create entry 'cn=Write,%s'\n",
176 monitor_subsys[SLAPD_MONITOR_RWW].mss_ndn.bv_val, 0, 0 );
178 Debug( LDAP_DEBUG_ANY,
179 "monitor_subsys_rww_init: "
180 "unable to create entry 'cn=Write,%s'\n",
181 monitor_subsys[SLAPD_MONITOR_RWW].mss_ndn.bv_val, 0, 0 );
188 attr_merge_one( e, mi->mi_ad_monitorCounter, &bv, NULL );
190 mp = ( struct monitorentrypriv * )ch_calloc( sizeof( struct monitorentrypriv ), 1 );
191 e->e_private = ( void * )mp;
193 mp->mp_children = NULL;
194 mp->mp_info = &monitor_subsys[SLAPD_MONITOR_RWW];
195 mp->mp_flags = monitor_subsys[SLAPD_MONITOR_RWW].mss_flags \
196 | MONITOR_F_SUB | MONITOR_F_PERSISTENT;
198 if ( monitor_cache_add( mi, e ) ) {
200 LDAP_LOG( OPERATION, CRIT,
201 "monitor_subsys_rww_init: "
202 "unable to add entry 'cn=Write,%s'\n",
203 monitor_subsys[SLAPD_MONITOR_RWW].mss_ndn.bv_val, 0, 0 );
205 Debug( LDAP_DEBUG_ANY,
206 "monitor_subsys_rww_init: "
207 "unable to add entry 'cn=Write,%s'\n",
208 monitor_subsys[SLAPD_MONITOR_RWW].mss_ndn.bv_val, 0, 0 );
215 mp = ( struct monitorentrypriv * )e_conn->e_private;
216 mp->mp_children = e_tmp;
218 monitor_cache_release( mi, e_conn );
224 monitor_subsys_rww_update(
229 struct monitorinfo *mi = (struct monitorinfo *)op->o_bd->be_private;
232 long nconns, nwritewaiters, nreadwaiters;
240 char buf[] = "+9223372036854775807L";
243 assert( mi != NULL );
246 if ( strncasecmp( e->e_ndn, "cn=read",
247 sizeof("cn=read")-1 ) == 0 ) {
250 } else if ( strncasecmp( e->e_ndn, "cn=write",
251 sizeof("cn=write")-1 ) == 0 ) {
258 nconns = nwritewaiters = nreadwaiters = 0;
259 for ( c = connection_first( &connindex );
261 c = connection_next( c, &connindex ), nconns++ ) {
262 if ( c->c_writewaiter ) {
265 if ( c->c_currentber != NULL ) {
284 snprintf( buf, sizeof( buf ), "%ld", num );
286 a = attr_find( e->e_attrs, mi->mi_ad_monitorCounter );
288 free( a->a_vals[0].bv_val );
289 ber_str2bv( buf, 0, 1, &a->a_vals[ 0 ] );