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 2005 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #ifndef _LIBUUTIL_IMPL_H 28 #define _LIBUUTIL_IMPL_H 29 30 31 32 #include <libuutil.h> 33 #include <pthread.h> 34 35 #include <sys/avl_impl.h> 36 #include <sys/byteorder.h> 37 38 #ifdef __cplusplus 39 extern "C" { 40 #endif 41 42 void uu_set_error(uint_t); 43 44 45 void uu_panic(const char *format, ...) __attribute__((format(printf, 1, 2))); 46 47 48 /* 49 * For debugging purposes, libuutil keeps around linked lists of all uu_lists 50 * and uu_avls, along with pointers to their parents. These can cause false 51 * negatives when looking for memory leaks, so we encode the pointers by 52 * storing them with swapped endianness; this is not perfect, but it's about 53 * the best we can do without wasting a lot of space. 54 */ 55 #ifdef _LP64 56 #define UU_PTR_ENCODE(ptr) BSWAP_64((uintptr_t)(void *)(ptr)) 57 #else 58 #define UU_PTR_ENCODE(ptr) BSWAP_32((uintptr_t)(void *)(ptr)) 59 #endif 60 61 #define UU_PTR_DECODE(ptr) ((void *)UU_PTR_ENCODE(ptr)) 62 63 /* 64 * uu_list structures 65 */ 66 typedef struct uu_list_node_impl { 67 struct uu_list_node_impl *uln_next; 68 struct uu_list_node_impl *uln_prev; 69 } uu_list_node_impl_t; 70 71 struct uu_list_walk { 72 uu_list_walk_t *ulw_next; 73 uu_list_walk_t *ulw_prev; 74 75 uu_list_t *ulw_list; 76 int8_t ulw_dir; 77 uint8_t ulw_robust; 78 uu_list_node_impl_t *ulw_next_result; 79 }; 80 81 struct uu_list { 82 uintptr_t ul_next_enc; 83 uintptr_t ul_prev_enc; 84 85 uu_list_pool_t *ul_pool; 86 uintptr_t ul_parent_enc; /* encoded parent pointer */ 87 size_t ul_offset; 88 size_t ul_numnodes; 89 uint8_t ul_debug; 90 uint8_t ul_sorted; 91 uint8_t ul_index; /* mark for uu_list_index_ts */ 92 93 uu_list_node_impl_t ul_null_node; 94 uu_list_walk_t ul_null_walk; /* for robust walkers */ 95 }; 96 97 #define UU_LIST_PTR(ptr) ((uu_list_t *)UU_PTR_DECODE(ptr)) 98 99 #define UU_LIST_POOL_MAXNAME 64 100 101 struct uu_list_pool { 102 uu_list_pool_t *ulp_next; 103 uu_list_pool_t *ulp_prev; 104 105 char ulp_name[UU_LIST_POOL_MAXNAME]; 106 size_t ulp_nodeoffset; 107 size_t ulp_objsize; 108 uu_compare_fn_t *ulp_cmp; 109 uint8_t ulp_debug; 110 uint8_t ulp_last_index; 111 pthread_mutex_t ulp_lock; /* protects null_list */ 112 uu_list_t ulp_null_list; 113 }; 114 115 /* 116 * uu_avl structures 117 */ 118 typedef struct avl_node uu_avl_node_impl_t; 119 120 struct uu_avl_walk { 121 uu_avl_walk_t *uaw_next; 122 uu_avl_walk_t *uaw_prev; 123 124 uu_avl_t *uaw_avl; 125 void *uaw_next_result; 126 int8_t uaw_dir; 127 uint8_t uaw_robust; 128 }; 129 130 struct uu_avl { 131 uintptr_t ua_next_enc; 132 uintptr_t ua_prev_enc; 133 134 uu_avl_pool_t *ua_pool; 135 uintptr_t ua_parent_enc; 136 uint8_t ua_debug; 137 uint8_t ua_index; /* mark for uu_avl_index_ts */ 138 139 struct avl_tree ua_tree; 140 uu_avl_walk_t ua_null_walk; 141 }; 142 143 #define UU_AVL_PTR(x) ((uu_avl_t *)UU_PTR_DECODE(x)) 144 145 #define UU_AVL_POOL_MAXNAME 64 146 147 struct uu_avl_pool { 148 uu_avl_pool_t *uap_next; 149 uu_avl_pool_t *uap_prev; 150 151 char uap_name[UU_AVL_POOL_MAXNAME]; 152 size_t uap_nodeoffset; 153 size_t uap_objsize; 154 uu_compare_fn_t *uap_cmp; 155 uint8_t uap_debug; 156 uint8_t uap_last_index; 157 pthread_mutex_t uap_lock; /* protects null_avl */ 158 uu_avl_t uap_null_avl; 159 }; 160 161 /* 162 * atfork() handlers 163 */ 164 void uu_avl_lockup(void); 165 void uu_avl_release(void); 166 167 void uu_list_lockup(void); 168 void uu_list_release(void); 169 170 #ifdef __cplusplus 171 } 172 #endif 173 174 #endif /* _LIBUUTIL_IMPL_H */ 175