| 1 |  |  | /*- | 
    
    | 2 |  |  |  * Copyright (c) 2009 The NetBSD Foundation, Inc. | 
    
    | 3 |  |  |  * All rights reserved. | 
    
    | 4 |  |  |  * | 
    
    | 5 |  |  |  * This code is derived from software contributed to The NetBSD Foundation | 
    
    | 6 |  |  |  * by David A. Holland. | 
    
    | 7 |  |  |  * | 
    
    | 8 |  |  |  * Redistribution and use in source and binary forms, with or without | 
    
    | 9 |  |  |  * modification, are permitted provided that the following conditions | 
    
    | 10 |  |  |  * are met: | 
    
    | 11 |  |  |  * 1. Redistributions of source code must retain the above copyright | 
    
    | 12 |  |  |  *    notice, this list of conditions and the following disclaimer. | 
    
    | 13 |  |  |  * 2. Redistributions in binary form must reproduce the above copyright | 
    
    | 14 |  |  |  *    notice, this list of conditions and the following disclaimer in the | 
    
    | 15 |  |  |  *    documentation and/or other materials provided with the distribution. | 
    
    | 16 |  |  |  * | 
    
    | 17 |  |  |  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS | 
    
    | 18 |  |  |  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED | 
    
    | 19 |  |  |  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | 
    
    | 20 |  |  |  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS | 
    
    | 21 |  |  |  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | 
    
    | 22 |  |  |  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | 
    
    | 23 |  |  |  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | 
    
    | 24 |  |  |  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | 
    
    | 25 |  |  |  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | 
    
    | 26 |  |  |  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | 
    
    | 27 |  |  |  * POSSIBILITY OF SUCH DAMAGE. | 
    
    | 28 |  |  |  */ | 
    
    | 29 |  |  |  | 
    
    | 30 |  |  | #include <stdlib.h> | 
    
    | 31 |  |  | #include <string.h> | 
    
    | 32 |  |  |  | 
    
    | 33 |  |  | #define ARRAYINLINE | 
    
    | 34 |  |  | #include "array.h" | 
    
    | 35 |  |  |  | 
    
    | 36 |  |  | struct array * | 
    
    | 37 |  |  | array_create(void) | 
    
    | 38 |  |  | { | 
    
    | 39 |  |  | 	struct array *a; | 
    
    | 40 |  |  |  | 
    
    | 41 |  |  | 	a = domalloc(sizeof(*a)); | 
    
    | 42 |  |  | 	array_init(a); | 
    
    | 43 |  |  | 	return a; | 
    
    | 44 |  |  | } | 
    
    | 45 |  |  |  | 
    
    | 46 |  |  | void | 
    
    | 47 |  |  | array_destroy(struct array *a) | 
    
    | 48 |  |  | { | 
    
    | 49 |  |  | 	array_cleanup(a); | 
    
    | 50 |  |  | 	dofree(a, sizeof(*a)); | 
    
    | 51 |  |  | } | 
    
    | 52 |  |  |  | 
    
    | 53 |  |  | void | 
    
    | 54 |  |  | array_init(struct array *a) | 
    
    | 55 |  |  | { | 
    
    | 56 |  | 99416 | 	a->num = a->max = 0; | 
    
    | 57 |  | 49708 | 	a->v = NULL; | 
    
    | 58 |  | 49708 | } | 
    
    | 59 |  |  |  | 
    
    | 60 |  |  | void | 
    
    | 61 |  |  | array_cleanup(struct array *a) | 
    
    | 62 |  |  | { | 
    
    | 63 | ✗✓ | 73100 | 	arrayassert(a->num == 0); | 
    
    | 64 |  | 36550 | 	dofree(a->v, a->max * sizeof(a->v[0])); | 
    
    | 65 |  |  | #ifdef ARRAYS_CHECKED | 
    
    | 66 |  | 36550 | 	a->v = NULL; | 
    
    | 67 |  |  | #endif | 
    
    | 68 |  | 36550 | } | 
    
    | 69 |  |  |  | 
    
    | 70 |  |  | void | 
    
    | 71 |  |  | array_setsize(struct array *a, unsigned num) | 
    
    | 72 |  |  | { | 
    
    | 73 |  |  | 	unsigned newmax; | 
    
    | 74 |  |  | 	void **newptr; | 
    
    | 75 |  |  |  | 
    
    | 76 | ✓✓ | 169592 | 	if (num > a->max) { | 
    
    | 77 |  |  | 		newmax = a->max; | 
    
    | 78 | ✓✓ | 116960 | 		while (num > newmax) { | 
    
    | 79 |  | 29240 | 			newmax = newmax ? newmax*2 : 4; | 
    
    | 80 |  |  | 		} | 
    
    | 81 |  | 58480 | 		newptr = dorealloc(a->v, a->max * sizeof(a->v[0]), | 
    
    | 82 |  | 29240 | 				   newmax * sizeof(a->v[0])); | 
    
    | 83 |  | 29240 | 		a->v = newptr; | 
    
    | 84 |  | 29240 | 		a->max = newmax; | 
    
    | 85 |  | 29240 | 	} | 
    
    | 86 |  | 84796 | 	a->num = num; | 
    
    | 87 |  | 84796 | } | 
    
    | 88 |  |  |  | 
    
    | 89 |  |  | void | 
    
    | 90 |  |  | array_insert(struct array *a, unsigned index_) | 
    
    | 91 |  |  | { | 
    
    | 92 |  |  | 	unsigned movers; | 
    
    | 93 |  |  |  | 
    
    | 94 |  |  | 	arrayassert(a->num <= a->max); | 
    
    | 95 |  |  | 	arrayassert(index_ < a->num); | 
    
    | 96 |  |  |  | 
    
    | 97 |  |  | 	movers = a->num - index_; | 
    
    | 98 |  |  |  | 
    
    | 99 |  |  | 	array_setsize(a, a->num + 1); | 
    
    | 100 |  |  |  | 
    
    | 101 |  |  | 	memmove(a->v + index_+1, a->v + index_, movers*sizeof(*a->v)); | 
    
    | 102 |  |  | } | 
    
    | 103 |  |  |  | 
    
    | 104 |  |  | void | 
    
    | 105 |  |  | array_remove(struct array *a, unsigned index_) | 
    
    | 106 |  |  | { | 
    
    | 107 |  |  | 	unsigned movers; | 
    
    | 108 |  |  |  | 
    
    | 109 |  |  | 	arrayassert(a->num <= a->max); | 
    
    | 110 |  |  | 	arrayassert(index_ < a->num); | 
    
    | 111 |  |  |  | 
    
    | 112 |  |  | 	movers = a->num - (index_ + 1); | 
    
    | 113 |  |  | 	memmove(a->v + index_, a->v + index_+1, movers*sizeof(*a->v)); | 
    
    | 114 |  |  | 	a->num--; | 
    
    | 115 |  |  | } |