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[openldap] / servers / slapd / operation.c
1 /* operation.c - routines to deal with pending ldap operations */
2 /* $OpenLDAP$ */
3 /*
4  * Copyright 1998-2003 The OpenLDAP Foundation, All Rights Reserved.
5  * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
6  */
7
8 #include "portable.h"
9
10 #include <stdio.h>
11
12 #include <ac/string.h>
13 #include <ac/socket.h>
14
15 #include "slap.h"
16
17 #ifdef LDAP_SLAPI
18 #include "slapi.h"
19 #endif
20
21 static ldap_pvt_thread_mutex_t  slap_op_mutex;
22 static LDAP_STAILQ_HEAD(s_o, slap_op)   slap_free_ops;
23
24 void slap_op_init(void)
25 {
26         ldap_pvt_thread_mutex_init( &slap_op_mutex );
27         LDAP_STAILQ_INIT(&slap_free_ops);
28 }
29
30 void slap_op_destroy(void)
31 {
32         Operation *o;
33
34         while ( (o = LDAP_STAILQ_FIRST( &slap_free_ops )) != NULL) {
35                 LDAP_STAILQ_REMOVE_HEAD( &slap_free_ops, o_next );
36                 LDAP_STAILQ_NEXT(o, o_next) = NULL;
37                 ch_free( o );
38         }
39         ldap_pvt_thread_mutex_destroy( &slap_op_mutex );
40 }
41
42 void
43 slap_op_free( Operation *op )
44 {
45         assert( LDAP_STAILQ_NEXT(op, o_next) == NULL );
46
47         if ( op->o_ber != NULL ) {
48                 /* Note - the ber and its buffer are in regular memory,
49                  * so make sure not to use sl_free here.
50                  */
51                 ber_set_option( op->o_ber, LBER_OPT_BER_MEMCTX, NULL );
52                 ber_free( op->o_ber, 1 );
53         }
54         if ( op->o_dn.bv_val != NULL ) {
55                 free( op->o_dn.bv_val );
56         }
57         if ( op->o_ndn.bv_val != NULL ) {
58                 free( op->o_ndn.bv_val );
59         }
60         if ( op->o_authmech.bv_val != NULL ) {
61                 free( op->o_authmech.bv_val );
62         }
63         if ( op->o_ctrls != NULL ) {
64                 slap_free_ctrls( op, op->o_ctrls );
65         }
66
67 #ifdef LDAP_CONNECTIONLESS
68         if ( op->o_res_ber != NULL ) {
69                 ber_free( op->o_res_ber, 1 );
70         }
71 #endif
72 #ifdef LDAP_CLIENT_UPDATE
73         if ( op->o_clientupdate_state.bv_val != NULL ) {
74                 free( op->o_clientupdate_state.bv_val );
75         }
76 #endif
77 #ifdef LDAP_SYNC
78         if ( op->o_sync_state.bv_val != NULL ) {
79                 free( op->o_sync_state.bv_val );
80         }
81 #endif
82
83 #if defined( LDAP_SLAPI )
84         if ( op->o_pb != NULL ) {
85                 slapi_pblock_destroy( (Slapi_PBlock *)op->o_pb );
86         }
87 #endif /* defined( LDAP_SLAPI ) */
88
89         memset( op, 0, sizeof(Operation) );
90         ldap_pvt_thread_mutex_lock( &slap_op_mutex );
91         LDAP_STAILQ_INSERT_HEAD( &slap_free_ops, op, o_next );
92         ldap_pvt_thread_mutex_unlock( &slap_op_mutex );
93 }
94
95 Operation *
96 slap_op_alloc(
97     BerElement          *ber,
98     ber_int_t   msgid,
99     ber_tag_t   tag,
100     ber_int_t   id
101 )
102 {
103         Operation       *op;
104
105         ldap_pvt_thread_mutex_lock( &slap_op_mutex );
106         if ((op = LDAP_STAILQ_FIRST( &slap_free_ops ))) {
107                 LDAP_STAILQ_REMOVE_HEAD( &slap_free_ops, o_next );
108         }
109         ldap_pvt_thread_mutex_unlock( &slap_op_mutex );
110
111         if (!op)
112                 op = (Operation *) ch_calloc( 1, sizeof(Operation) );
113
114         op->o_ber = ber;
115         op->o_msgid = msgid;
116         op->o_tag = tag;
117
118         op->o_time = slap_get_time();
119         op->o_opid = id;
120 #ifdef LDAP_CONNECTIONLESS
121         op->o_res_ber = NULL;
122 #endif
123
124 #if defined( LDAP_SLAPI )
125         op->o_pb = slapi_pblock_new();
126 #endif /* defined( LDAP_SLAPI ) */
127
128         return( op );
129 }