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 /* 24 * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 25 * Use is subject to license terms. 26 */ 27 28 #pragma ident "%Z%%M% %I% %E% SMI" 29 30 #include <fmd_alloc.h> 31 #include <fmd_string.h> 32 #include <fmd_subr.h> 33 #include <fmd_buf.h> 34 #include <fmd.h> 35 36 static fmd_buf_t * 37 fmd_buf_alloc(const char *name, size_t size) 38 { 39 fmd_buf_t *bp = fmd_alloc(sizeof (fmd_buf_t), FMD_SLEEP); 40 41 bp->buf_name = fmd_strdup(name, FMD_SLEEP); 42 bp->buf_next = NULL; 43 bp->buf_data = fmd_zalloc(size, FMD_SLEEP); 44 bp->buf_size = size; 45 bp->buf_flags = FMD_BUF_DIRTY; 46 47 return (bp); 48 } 49 50 static void 51 fmd_buf_free(fmd_buf_t *bp) 52 { 53 fmd_strfree(bp->buf_name); 54 fmd_free(bp->buf_data, bp->buf_size); 55 fmd_free(bp, sizeof (fmd_buf_t)); 56 } 57 58 void 59 fmd_buf_hash_create(fmd_buf_hash_t *bhp) 60 { 61 bhp->bh_hashlen = fmd.d_str_buckets; 62 bhp->bh_hash = fmd_zalloc(sizeof (void *) * bhp->bh_hashlen, FMD_SLEEP); 63 bhp->bh_count = 0; 64 } 65 66 size_t 67 fmd_buf_hash_destroy(fmd_buf_hash_t *bhp) 68 { 69 size_t total = 0; 70 fmd_buf_t *bp, *np; 71 uint_t i; 72 73 for (i = 0; i < bhp->bh_hashlen; i++) { 74 for (bp = bhp->bh_hash[i]; bp != NULL; bp = np) { 75 np = bp->buf_next; 76 total += bp->buf_size; 77 fmd_buf_free(bp); 78 } 79 } 80 81 fmd_free(bhp->bh_hash, sizeof (void *) * bhp->bh_hashlen); 82 bzero(bhp, sizeof (fmd_buf_hash_t)); 83 return (total); 84 } 85 86 void 87 fmd_buf_hash_apply(fmd_buf_hash_t *bhp, fmd_buf_f *func, void *arg) 88 { 89 fmd_buf_t *bp; 90 uint_t i; 91 92 for (i = 0; i < bhp->bh_hashlen; i++) { 93 for (bp = bhp->bh_hash[i]; bp != NULL; bp = bp->buf_next) 94 func(bp, arg); 95 } 96 } 97 98 void 99 fmd_buf_hash_commit(fmd_buf_hash_t *bhp) 100 { 101 fmd_buf_t *bp; 102 uint_t i; 103 104 for (i = 0; i < bhp->bh_hashlen; i++) { 105 for (bp = bhp->bh_hash[i]; bp != NULL; bp = bp->buf_next) 106 bp->buf_flags &= ~FMD_BUF_DIRTY; 107 } 108 } 109 110 uint_t 111 fmd_buf_hash_count(fmd_buf_hash_t *bhp) 112 { 113 return (bhp->bh_count); 114 } 115 116 fmd_buf_t * 117 fmd_buf_insert(fmd_buf_hash_t *bhp, const char *name, size_t size) 118 { 119 uint_t h = fmd_strhash(name) % bhp->bh_hashlen; 120 fmd_buf_t *bp = fmd_buf_alloc(name, size); 121 122 bp->buf_next = bhp->bh_hash[h]; 123 bhp->bh_hash[h] = bp; 124 bhp->bh_count++; 125 126 return (bp); 127 } 128 129 fmd_buf_t * 130 fmd_buf_lookup(fmd_buf_hash_t *bhp, const char *name) 131 { 132 uint_t h = fmd_strhash(name) % bhp->bh_hashlen; 133 fmd_buf_t *bp; 134 135 for (bp = bhp->bh_hash[h]; bp != NULL; bp = bp->buf_next) { 136 if (strcmp(name, bp->buf_name) == 0) 137 return (bp); 138 } 139 140 return (NULL); 141 } 142 143 void 144 fmd_buf_delete(fmd_buf_hash_t *bhp, const char *name) 145 { 146 uint_t h = fmd_strhash(name) % bhp->bh_hashlen; 147 fmd_buf_t *bp, **pp = &bhp->bh_hash[h]; 148 149 for (bp = *pp; bp != NULL; bp = bp->buf_next) { 150 if (strcmp(bp->buf_name, name) != 0) 151 pp = &bp->buf_next; 152 else 153 break; 154 } 155 156 if (bp != NULL) { 157 *pp = bp->buf_next; 158 fmd_buf_free(bp); 159 ASSERT(bhp->bh_count != 0); 160 bhp->bh_count--; 161 } 162 } 163