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 /* 28 * Copyright (c) 2015, Joyent, Inc. All rights reserved. 29 */ 30 31 #ifndef _LIBUUTIL_IMPL_H 32 #define _LIBUUTIL_IMPL_H 33 34 #include <libuutil.h> 35 #include <pthread.h> 36 37 #include <sys/avl_impl.h> 38 #include <sys/byteorder.h> 39 40 #ifdef __cplusplus 41 extern "C" { 42 #endif 43 44 void uu_set_error(uint_t); 45 46 struct uu_dprintf { 47 char *uud_name; 48 uu_dprintf_severity_t uud_severity; 49 uint_t uud_flags; 50 }; 51 52 /* 53 * For debugging purposes, libuutil keeps around linked lists of all uu_lists 54 * and uu_avls, along with pointers to their parents. These can cause false 55 * negatives when looking for memory leaks, so we encode the pointers by 56 * storing them with swapped endianness; this is not perfect, but it's about 57 * the best we can do without wasting a lot of space. 58 */ 59 #ifdef _LP64 60 #define UU_PTR_ENCODE(ptr) BSWAP_64((uintptr_t)(void *)(ptr)) 61 #else 62 #define UU_PTR_ENCODE(ptr) BSWAP_32((uintptr_t)(void *)(ptr)) 63 #endif 64 65 #define UU_PTR_DECODE(ptr) ((void *)UU_PTR_ENCODE(ptr)) 66 67 /* 68 * uu_list structures 69 */ 70 typedef struct uu_list_node_impl { 71 struct uu_list_node_impl *uln_next; 72 struct uu_list_node_impl *uln_prev; 73 } uu_list_node_impl_t; 74 75 struct uu_list_walk { 76 uu_list_walk_t *ulw_next; 77 uu_list_walk_t *ulw_prev; 78 79 uu_list_t *ulw_list; 80 int8_t ulw_dir; 81 uint8_t ulw_robust; 82 uu_list_node_impl_t *ulw_next_result; 83 }; 84 85 struct uu_list { 86 uintptr_t ul_next_enc; 87 uintptr_t ul_prev_enc; 88 89 uu_list_pool_t *ul_pool; 90 uintptr_t ul_parent_enc; /* encoded parent pointer */ 91 size_t ul_offset; 92 size_t ul_numnodes; 93 uint8_t ul_debug; 94 uint8_t ul_sorted; 95 uint8_t ul_index; /* mark for uu_list_index_ts */ 96 97 uu_list_node_impl_t ul_null_node; 98 uu_list_walk_t ul_null_walk; /* for robust walkers */ 99 }; 100 101 #define UU_LIST_PTR(ptr) ((uu_list_t *)UU_PTR_DECODE(ptr)) 102 103 #define UU_LIST_POOL_MAXNAME 64 104 105 struct uu_list_pool { 106 uu_list_pool_t *ulp_next; 107 uu_list_pool_t *ulp_prev; 108 109 char ulp_name[UU_LIST_POOL_MAXNAME]; 110 size_t ulp_nodeoffset; 111 size_t ulp_objsize; 112 uu_compare_fn_t *ulp_cmp; 113 uint8_t ulp_debug; 114 uint8_t ulp_last_index; 115 pthread_mutex_t ulp_lock; /* protects null_list */ 116 uu_list_t ulp_null_list; 117 }; 118 119 /* 120 * uu_avl structures 121 */ 122 typedef struct avl_node uu_avl_node_impl_t; 123 124 struct uu_avl_walk { 125 uu_avl_walk_t *uaw_next; 126 uu_avl_walk_t *uaw_prev; 127 128 uu_avl_t *uaw_avl; 129 void *uaw_next_result; 130 int8_t uaw_dir; 131 uint8_t uaw_robust; 132 }; 133 134 struct uu_avl { 135 uintptr_t ua_next_enc; 136 uintptr_t ua_prev_enc; 137 138 uu_avl_pool_t *ua_pool; 139 uintptr_t ua_parent_enc; 140 uint8_t ua_debug; 141 uint8_t ua_index; /* mark for uu_avl_index_ts */ 142 143 struct avl_tree ua_tree; 144 uu_avl_walk_t ua_null_walk; 145 }; 146 147 #define UU_AVL_PTR(x) ((uu_avl_t *)UU_PTR_DECODE(x)) 148 149 #define UU_AVL_POOL_MAXNAME 64 150 151 struct uu_avl_pool { 152 uu_avl_pool_t *uap_next; 153 uu_avl_pool_t *uap_prev; 154 155 char uap_name[UU_AVL_POOL_MAXNAME]; 156 size_t uap_nodeoffset; 157 size_t uap_objsize; 158 uu_compare_fn_t *uap_cmp; 159 uint8_t uap_debug; 160 uint8_t uap_last_index; 161 pthread_mutex_t uap_lock; /* protects null_avl */ 162 uu_avl_t uap_null_avl; 163 }; 164 165 /* 166 * atfork() handlers 167 */ 168 void uu_avl_lockup(void); 169 void uu_avl_release(void); 170 171 void uu_list_lockup(void); 172 void uu_list_release(void); 173 174 #ifdef __cplusplus 175 } 176 #endif 177 178 #endif /* _LIBUUTIL_IMPL_H */ 179