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 (c) 1999 by Sun Microsystems, Inc. 24 * All rights reserved. 25 */ 26 27 #include <mdb/mdb_addrvec.h> 28 #include <mdb/mdb_debug.h> 29 #include <mdb/mdb_modapi.h> 30 31 #include <strings.h> 32 33 #define AD_INIT 16 /* initial size of addrvec array */ 34 #define AD_GROW 2 /* array growth multiplier */ 35 36 void 37 mdb_addrvec_create(mdb_addrvec_t *adp) 38 { 39 bzero(adp, sizeof (mdb_addrvec_t)); 40 } 41 42 void 43 mdb_addrvec_destroy(mdb_addrvec_t *adp) 44 { 45 mdb_free(adp->ad_data, sizeof (uintptr_t) * adp->ad_size); 46 bzero(adp, sizeof (mdb_addrvec_t)); 47 } 48 49 void 50 mdb_addrvec_unshift(mdb_addrvec_t *adp, uintptr_t value) 51 { 52 if (adp->ad_nelems >= adp->ad_size) { 53 size_t size = adp->ad_size ? adp->ad_size * AD_GROW : AD_INIT; 54 void *data = mdb_alloc(sizeof (uintptr_t) * size, UM_SLEEP); 55 56 bcopy(adp->ad_data, data, sizeof (uintptr_t) * adp->ad_size); 57 mdb_free(adp->ad_data, sizeof (uintptr_t) * adp->ad_size); 58 59 adp->ad_data = data; 60 adp->ad_size = size; 61 } 62 63 adp->ad_data[adp->ad_nelems++] = value; 64 } 65 66 uintptr_t 67 mdb_addrvec_shift(mdb_addrvec_t *adp) 68 { 69 if (adp->ad_ndx < adp->ad_nelems) 70 return (adp->ad_data[adp->ad_ndx++]); 71 72 return ((uintptr_t)-1L); 73 } 74 75 size_t 76 mdb_addrvec_length(mdb_addrvec_t *adp) 77 { 78 if (adp != NULL) { 79 ASSERT(adp->ad_nelems >= adp->ad_ndx); 80 return (adp->ad_nelems - adp->ad_ndx); 81 } 82 83 return (0); /* convenience for callers */ 84 } 85