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https://git.openldap.org/openldap/openldap.git
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341 lines
7.9 KiB
C
341 lines
7.9 KiB
C
/* thread.c - deal with thread subsystem */
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/* $OpenLDAP$ */
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/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
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*
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* Copyright 2001-2006 The OpenLDAP Foundation.
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* Portions Copyright 2001-2003 Pierangelo Masarati.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted only as authorized by the OpenLDAP
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* Public License.
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*
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* A copy of this license is available in file LICENSE in the
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* top-level directory of the distribution or, alternatively, at
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* <http://www.OpenLDAP.org/license.html>.
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*/
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/* ACKNOWLEDGEMENTS:
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* This work was initially developed by Pierangelo Masarati for inclusion
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* in OpenLDAP Software.
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*/
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#include "portable.h"
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#include <stdio.h>
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#include <ac/string.h>
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#include "slap.h"
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#include "back-monitor.h"
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#include <ldap_rq.h>
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static int
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monitor_subsys_thread_update(
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Operation *op,
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SlapReply *rs,
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Entry *e );
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/*
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* initializes log subentry
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*/
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int
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monitor_subsys_thread_init(
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BackendDB *be,
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monitor_subsys_t *ms
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)
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{
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monitor_info_t *mi;
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monitor_entry_t *mp;
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Entry *e, **ep, *e_thread;
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static char buf[ BACKMONITOR_BUFSIZE ];
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struct berval bv;
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ms->mss_update = monitor_subsys_thread_update;
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mi = ( monitor_info_t * )be->be_private;
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if ( monitor_cache_get( mi, &ms->mss_ndn, &e_thread ) ) {
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Debug( LDAP_DEBUG_ANY,
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"monitor_subsys_thread_init: unable to get entry \"%s\"\n",
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ms->mss_ndn.bv_val,
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0, 0 );
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return( -1 );
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}
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mp = ( monitor_entry_t * )e_thread->e_private;
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mp->mp_children = NULL;
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ep = &mp->mp_children;
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/*
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* Max
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*/
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BER_BVSTR( &bv, "cn=Max" );
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e = monitor_entry_stub( &ms->mss_dn, &ms->mss_ndn, &bv,
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mi->mi_oc_monitoredObject, mi, NULL, NULL );
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if ( e == NULL ) {
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Debug( LDAP_DEBUG_ANY,
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"monitor_subsys_thread_init: "
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"unable to create entry \"cn=Max,%s\"\n",
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ms->mss_ndn.bv_val, 0, 0 );
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return( -1 );
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}
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bv.bv_len = snprintf( buf, sizeof( buf ), "%d", connection_pool_max );
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bv.bv_val = buf;
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attr_merge_normalize_one( e, mi->mi_ad_monitoredInfo, &bv, NULL );
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mp = monitor_entrypriv_create();
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if ( mp == NULL ) {
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return -1;
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}
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e->e_private = ( void * )mp;
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mp->mp_info = ms;
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mp->mp_flags = ms->mss_flags \
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| MONITOR_F_SUB | MONITOR_F_PERSISTENT;
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if ( monitor_cache_add( mi, e ) ) {
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Debug( LDAP_DEBUG_ANY,
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"monitor_subsys_thread_init: "
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"unable to add entry \"cn=Max,%s\"\n",
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ms->mss_ndn.bv_val, 0, 0 );
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return( -1 );
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}
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*ep = e;
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ep = &mp->mp_next;
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/*
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* Backload
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*/
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BER_BVSTR( &bv, "cn=Backload" );
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e = monitor_entry_stub( &ms->mss_dn, &ms->mss_ndn, &bv,
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mi->mi_oc_monitoredObject, mi, NULL, NULL );
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if ( e == NULL ) {
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Debug( LDAP_DEBUG_ANY,
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"monitor_subsys_thread_init: "
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"unable to create entry \"cn=Backload,%s\"\n",
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ms->mss_ndn.bv_val, 0, 0 );
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return( -1 );
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}
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BER_BVSTR( &bv, "0" );
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attr_merge_normalize_one( e, mi->mi_ad_monitoredInfo, &bv, NULL );
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mp = monitor_entrypriv_create();
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if ( mp == NULL ) {
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return -1;
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}
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e->e_private = ( void * )mp;
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mp->mp_info = ms;
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mp->mp_flags = ms->mss_flags \
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| MONITOR_F_SUB | MONITOR_F_PERSISTENT;
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if ( monitor_cache_add( mi, e ) ) {
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Debug( LDAP_DEBUG_ANY,
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"monitor_subsys_thread_init: "
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"unable to add entry \"cn=Backload,%s\"\n",
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ms->mss_ndn.bv_val, 0, 0 );
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return( -1 );
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}
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*ep = e;
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ep = &mp->mp_next;
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/*
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* Runqueue runners
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*/
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BER_BVSTR( &bv, "cn=Runqueue" );
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e = monitor_entry_stub( &ms->mss_dn, &ms->mss_ndn, &bv,
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mi->mi_oc_monitoredObject, mi, NULL, NULL );
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if ( e == NULL ) {
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Debug( LDAP_DEBUG_ANY,
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"monitor_subsys_thread_init: "
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"unable to create entry \"cn=Runqueue,%s\"\n",
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ms->mss_ndn.bv_val, 0, 0 );
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return( -1 );
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}
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BER_BVSTR( &bv, "0" );
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attr_merge_normalize_one( e, mi->mi_ad_monitoredInfo, &bv, NULL );
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mp = monitor_entrypriv_create();
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if ( mp == NULL ) {
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return -1;
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}
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e->e_private = ( void * )mp;
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mp->mp_info = ms;
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mp->mp_flags = ms->mss_flags \
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| MONITOR_F_SUB | MONITOR_F_PERSISTENT;
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if ( monitor_cache_add( mi, e ) ) {
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Debug( LDAP_DEBUG_ANY,
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"monitor_subsys_thread_init: "
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"unable to add entry \"cn=Runqueue,%s\"\n",
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ms->mss_ndn.bv_val, 0, 0 );
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return( -1 );
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}
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*ep = e;
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ep = &mp->mp_next;
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/*
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* Tasklist
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*/
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BER_BVSTR( &bv, "cn=Tasklist" );
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e = monitor_entry_stub( &ms->mss_dn, &ms->mss_ndn, &bv,
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mi->mi_oc_monitoredObject, mi, NULL, NULL );
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if ( e == NULL ) {
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Debug( LDAP_DEBUG_ANY,
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"monitor_subsys_thread_init: "
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"unable to create entry \"%s,%s\"\n",
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bv.bv_val, ms->mss_ndn.bv_val, 0 );
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return( -1 );
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}
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BER_BVSTR( &bv, "0" );
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attr_merge_normalize_one( e, mi->mi_ad_monitoredInfo, &bv, NULL );
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mp = monitor_entrypriv_create();
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if ( mp == NULL ) {
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return -1;
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}
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e->e_private = ( void * )mp;
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mp->mp_info = ms;
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mp->mp_flags = ms->mss_flags \
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| MONITOR_F_SUB | MONITOR_F_PERSISTENT;
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if ( monitor_cache_add( mi, e ) ) {
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Debug( LDAP_DEBUG_ANY,
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"monitor_subsys_thread_init: "
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"unable to add entry \"%s\"\n",
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e->e_name.bv_val, 0, 0 );
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return( -1 );
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}
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*ep = e;
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ep = &mp->mp_next;
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monitor_cache_release( mi, e_thread );
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return( 0 );
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}
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static int
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monitor_subsys_thread_update(
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Operation *op,
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SlapReply *rs,
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Entry *e )
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{
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monitor_info_t *mi = ( monitor_info_t * )op->o_bd->be_private;
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Attribute *a;
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char buf[ BACKMONITOR_BUFSIZE ];
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enum {
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MT_UNKNOWN,
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MT_BACKLOAD,
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MT_RUNQUEUE,
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MT_TASKLIST,
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MT_MAX /* unused */
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};
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static slap_verbmasks mt[] = {
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{ BER_BVC( "cn=backload" ), MT_BACKLOAD },
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{ BER_BVC( "cn=runqueue" ), MT_RUNQUEUE },
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{ BER_BVC( "cn=tasklist" ), MT_TASKLIST },
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{ BER_BVC( "cn=max" ), MT_UNKNOWN },
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{ BER_BVNULL, MT_UNKNOWN }
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};
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struct berval rdn, bv;
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ber_len_t len;
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int which, i;
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struct re_s *re;
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assert( mi != NULL );
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dnRdn( &e->e_nname, &rdn );
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which = bverb_to_mask( &rdn, mt );
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if ( BER_BVISNULL( &mt[ which ].word )
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|| mt[ which ].mask == MT_UNKNOWN )
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{
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return SLAP_CB_CONTINUE;
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}
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a = attr_find( e->e_attrs, mi->mi_ad_monitoredInfo );
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if ( a == NULL ) {
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return rs->sr_err = LDAP_OTHER;
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}
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switch ( mt[ which ].mask ) {
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case MT_BACKLOAD:
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snprintf( buf, sizeof( buf ), "%d",
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ldap_pvt_thread_pool_backload( &connection_pool ) );
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len = strlen( buf );
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if ( len > a->a_vals[ 0 ].bv_len ) {
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a->a_vals[ 0 ].bv_val = ber_memrealloc( a->a_vals[ 0 ].bv_val, len + 1 );
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}
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a->a_vals[ 0 ].bv_len = len;
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AC_MEMCPY( a->a_vals[ 0 ].bv_val, buf, len + 1 );
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break;
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case MT_RUNQUEUE:
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for ( i = 0; !BER_BVISNULL( &a->a_vals[ i ] ); i++ ) {
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ch_free( a->a_vals[ i ].bv_val );
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BER_BVZERO( &a->a_vals[ i ] );
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}
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if ( a->a_nvals != a->a_vals ) {
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ber_bvarray_free( a->a_nvals );
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}
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a->a_nvals = NULL;
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bv.bv_val = buf;
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ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
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i = 0;
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LDAP_STAILQ_FOREACH( re, &slapd_rq.run_list, rnext ) {
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bv.bv_len = snprintf( buf, sizeof( buf ), "{%d}%s(%s)",
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i, re->tname, re->tspec );
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if ( bv.bv_len < sizeof( buf ) ) {
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value_add_one( &a->a_vals, &bv );
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}
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i++;
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}
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ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
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/* don't leave 'round attributes with no values */
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if ( BER_BVISNULL( &a->a_vals[ 0 ] ) ) {
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BER_BVSTR( &bv, "{0}()" );
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value_add_one( &a->a_vals, &bv );
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}
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a->a_nvals = a->a_vals;
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break;
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case MT_TASKLIST:
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for ( i = 0; !BER_BVISNULL( &a->a_vals[ i ] ); i++ ) {
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ch_free( a->a_vals[ i ].bv_val );
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BER_BVZERO( &a->a_vals[ i ] );
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}
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if ( a->a_nvals != a->a_vals ) {
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ber_bvarray_free( a->a_nvals );
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}
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a->a_nvals = NULL;
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bv.bv_val = buf;
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ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
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i = 0;
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LDAP_STAILQ_FOREACH( re, &slapd_rq.task_list, rnext ) {
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bv.bv_len = snprintf( buf, sizeof( buf ), "{%d}%s(%s)",
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i, re->tname, re->tspec );
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if ( bv.bv_len < sizeof( buf ) ) {
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value_add_one( &a->a_vals, &bv );
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}
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i++;
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}
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ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
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/* don't leave 'round attributes with no values */
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if ( BER_BVISNULL( &a->a_vals[ 0 ] ) ) {
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BER_BVSTR( &bv, "{0}()" );
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value_add_one( &a->a_vals, &bv );
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}
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a->a_nvals = a->a_vals;
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break;
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}
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/* FIXME: touch modifyTimestamp? */
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return SLAP_CB_CONTINUE;
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}
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