1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #ifndef _NIS_HASHITEM_H 28 #define _NIS_HASHITEM_H 29 30 #include <pthread.h> 31 #include <rpcsvc/nis.h> 32 33 #include "nisdb_rw.h" 34 35 #ifdef __cplusplus 36 extern "C" { 37 #endif 38 39 /* Private versions of the various NIS_HASH_ITEM functions */ 40 typedef struct __nis_item_item { 41 pthread_cond_t lock; 42 nis_name name; 43 int keychain; 44 uint32_t readers; 45 pthread_t last_reader_id; 46 uint32_t writer; 47 pthread_t writer_id; 48 struct __nis_item_item *next; 49 struct __nis_item_item *prv_item; 50 struct __nis_item_item *nxt_item; 51 } __nis_hash_item_mt; 52 53 typedef struct { 54 pthread_mutex_t lock; 55 pthread_cond_t cond; 56 pthread_mutex_t traverser_id_lock; 57 /* 58 * Protects 'traversed' 59 * and 'traverser_id'. 60 */ 61 uint32_t traversed; 62 pthread_t traverser_id; 63 uint32_t locked_items; 64 __nis_hash_item_mt *keys[64]; 65 __nis_hash_item_mt *first; 66 void (*destroyItem)(void *); 67 } __nis_hash_table_mt; 68 69 #define NIS_HASH_TABLE_MT_INIT { \ 70 PTHREAD_MUTEX_INITIALIZER, \ 71 {0}, \ 72 PTHREAD_MUTEX_INITIALIZER \ 73 /* Zero is fine for the rest */ \ 74 } 75 76 #define LOCK_LIST(list, msg) (void) __nis_lock_hash_table(list, 1, msg) 77 #define ULOCK_LIST(list, msg) (void) __nis_ulock_hash_table(list, 1, msg) 78 79 80 extern void __nis_init_hash_table(__nis_hash_table_mt *, void (*)(void *)); 81 extern int __nis_lock_hash_table(__nis_hash_table_mt *, int, char *); 82 extern int __nis_ulock_hash_table(__nis_hash_table_mt *, int, char *); 83 extern int __nis_insert_item_mt(void *, __nis_hash_table_mt *, int); 84 extern void __nis_insert_name_mt(nis_name, __nis_hash_table_mt *); 85 extern void *__nis_find_item_mt(nis_name, __nis_hash_table_mt *, int, 86 int *); 87 extern void *__nis_pop_item_mt(__nis_hash_table_mt *); 88 extern void *__nis_remove_item_mt(nis_name, __nis_hash_table_mt *); 89 extern int __nis_release_item(void *, __nis_hash_table_mt *, int); 90 extern int __nis_item_access(void *); 91 extern void __nis_scan_table_mt(__nis_hash_table_mt *, 92 bool_t (*)(__nis_hash_item_mt *, void *), void *); 93 94 /* Define-magic */ 95 #define NIS_HASH_ITEM __nis_hash_item_mt 96 #define NIS_HASH_TABLE __nis_hash_table_mt 97 #define nis_insert_item(i, t) __nis_insert_item_mt(i, t, -1) 98 #define nis_insert_item_rw(i, t, rw) __nis_insert_item_mt(i, t, rw) 99 #define nis_insert_name(n, t) __nis_insert_name_mt(n, t) 100 #define nis_find_item(i, t) __nis_find_item_mt(i, t, -1, 0) 101 #define nis_find_item_rw(i, t, rw) __nis_find_item_mt(i, t, rw, 0) 102 #define nis_pop_item __nis_pop_item_mt 103 #define nis_remove_item __nis_remove_item_mt 104 #define nis_scan_table __nis_scan_table_mt 105 106 #define MT_LOCK_TYPE(type) (type < 0)?"W":(type > 0)?"R":"N" 107 108 #ifdef NIS_MT_DEBUG 109 #define MT_LOG(condition, syslogarg) if (condition) syslog ## syslogarg 110 #else 111 #define MT_LOG(condition, syslogarg) 112 #endif /* NIS_MT_DEBUG */ 113 114 #ifdef __cplusplus 115 } 116 #endif /* __cplusplus */ 117 118 #endif /* _NIS_HASHITEM_H */ 119