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1 | /* -*-c-*- |
2 | * |
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3 | * $Id: alloc.c,v 1.3 1999/05/06 19:51:35 mdw Exp $ |
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4 | * |
5 | * Memory allocation functions |
6 | * |
7 | * (c) 1998 Straylight/Edgeware |
8 | */ |
9 | |
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10 | /*----- Licensing notice --------------------------------------------------* |
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11 | * |
12 | * This file is part of the mLib utilities library. |
13 | * |
14 | * mLib is free software; you can redistribute it and/or modify |
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15 | * it under the terms of the GNU Library General Public License as |
16 | * published by the Free Software Foundation; either version 2 of the |
17 | * License, or (at your option) any later version. |
18 | * |
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19 | * mLib is distributed in the hope that it will be useful, |
20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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22 | * GNU Library General Public License for more details. |
23 | * |
24 | * You should have received a copy of the GNU Library General Public |
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25 | * License along with mLib; if not, write to the Free |
26 | * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, |
27 | * MA 02111-1307, USA. |
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28 | */ |
29 | |
30 | /*----- Revision history --------------------------------------------------* |
31 | * |
32 | * $Log: alloc.c,v $ |
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33 | * Revision 1.3 1999/05/06 19:51:35 mdw |
34 | * Reformatted the LGPL notice a little bit. |
35 | * |
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36 | * Revision 1.2 1999/05/05 18:50:31 mdw |
37 | * Change licensing conditions to LGPL. |
38 | * |
39 | * Revision 1.1.1.1 1998/06/17 23:44:42 mdw |
40 | * Initial version of mLib |
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41 | * |
42 | */ |
43 | |
44 | /*----- Header files ------------------------------------------------------*/ |
45 | |
46 | /* --- ANSI headers --- */ |
47 | |
48 | #include <stdio.h> |
49 | #include <stdlib.h> |
50 | #include <string.h> |
51 | |
52 | /* --- Local headers --- */ |
53 | |
54 | #include "alloc.h" |
55 | #include "exc.h" |
56 | #include "track.h" |
57 | |
58 | /*----- Functions provided ------------------------------------------------*/ |
59 | |
60 | /* --- @xmalloc@ --- * |
61 | * |
62 | * Arguments: @size_t sz@ = size of block to allocate |
63 | * |
64 | * Returns: Pointer to allocated block. |
65 | * |
66 | * Use: Allocates memory. If there's not enough memory, the |
67 | * exception @EXC_NOMEM@ is thrown. |
68 | */ |
69 | |
70 | void *xmalloc(size_t sz) |
71 | { |
72 | void *p = malloc(sz); |
73 | if (!p) |
74 | THROW(EXC_NOMEM); |
75 | return (p); |
76 | } |
77 | |
78 | /* --- @xstrdup@ --- * |
79 | * |
80 | * Arguments: @const char *s@ = pointer to a string |
81 | * |
82 | * Returns: Pointer to a copy of the string. |
83 | * |
84 | * Use: Copies a string (like @strdup@ would, if it existed). If |
85 | * there's not enough memory, the exception @EXC_NOMEM@ is |
86 | * thrown. |
87 | */ |
88 | |
89 | char *xstrdup(const char *s) |
90 | { |
91 | size_t sz = strlen(s) + 1; |
92 | char *p = xmalloc(sz); |
93 | memcpy(p, s, sz); |
94 | return (p); |
95 | } |
96 | |
97 | /* --- @xrealloc@ --- * |
98 | * |
99 | * Arguments: @void *p@ = pointer to a block of memory |
100 | * @size_t sz@ = new size desired for the block |
101 | * |
102 | * Returns: Pointer to the resized memory block (which is almost |
103 | * certainly not in the same place any more). |
104 | * |
105 | * Use: Resizes a memory block. If there's not enough memory, the |
106 | * exception @EXC_NOMEM@ is thrown. |
107 | */ |
108 | |
109 | void *xrealloc(void *p, size_t sz) |
110 | { |
111 | p = realloc(p, sz); |
112 | if (!p) |
113 | THROW(EXC_NOMEM); |
114 | return (p); |
115 | } |
116 | |
117 | /*----- That's all, folks -------------------------------------------------*/ |