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 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 #include <mdb/mdb_addrvec.h> 30 #include <mdb/mdb_debug.h> 31 #include <mdb/mdb_modapi.h> 32 33 #include <strings.h> 34 35 #define AD_INIT 16 /* initial size of addrvec array */ 36 #define AD_GROW 2 /* array growth multiplier */ 37 38 void 39 mdb_addrvec_create(mdb_addrvec_t *adp) 40 { 41 bzero(adp, sizeof (mdb_addrvec_t)); 42 } 43 44 void 45 mdb_addrvec_destroy(mdb_addrvec_t *adp) 46 { 47 mdb_free(adp->ad_data, sizeof (uintptr_t) * adp->ad_size); 48 bzero(adp, sizeof (mdb_addrvec_t)); 49 } 50 51 void 52 mdb_addrvec_unshift(mdb_addrvec_t *adp, uintptr_t value) 53 { 54 if (adp->ad_nelems >= adp->ad_size) { 55 size_t size = adp->ad_size ? adp->ad_size * AD_GROW : AD_INIT; 56 void *data = mdb_alloc(sizeof (uintptr_t) * size, UM_SLEEP); 57 58 bcopy(adp->ad_data, data, sizeof (uintptr_t) * adp->ad_size); 59 mdb_free(adp->ad_data, sizeof (uintptr_t) * adp->ad_size); 60 61 adp->ad_data = data; 62 adp->ad_size = size; 63 } 64 65 adp->ad_data[adp->ad_nelems++] = value; 66 } 67 68 uintptr_t 69 mdb_addrvec_shift(mdb_addrvec_t *adp) 70 { 71 if (adp->ad_ndx < adp->ad_nelems) 72 return (adp->ad_data[adp->ad_ndx++]); 73 74 return ((uintptr_t)-1L); 75 } 76 77 size_t 78 mdb_addrvec_length(mdb_addrvec_t *adp) 79 { 80 if (adp != NULL) { 81 ASSERT(adp->ad_nelems >= adp->ad_ndx); 82 return (adp->ad_nelems - adp->ad_ndx); 83 } 84 85 return (0); /* convenience for callers */ 86 } 87