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1 | /* -*-c-*- |
2 | * |
3 | * $Id: alloc.c,v 1.1 1998/06/17 23:44:42 mdw Exp $ |
4 | * |
5 | * Memory allocation functions |
6 | * |
7 | * (c) 1998 Straylight/Edgeware |
8 | */ |
9 | |
10 | /*----- Licensing notice --------------------------------------------------* |
11 | * |
12 | * This file is part of the mLib utilities library. |
13 | * |
14 | * mLib is free software; you can redistribute it and/or modify |
15 | * it under the terms of the GNU General Public License as published by |
16 | * the Free Software Foundation; either version 2 of the License, or |
17 | * (at your option) any later version. |
18 | * |
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 |
22 | * GNU General Public License for more details. |
23 | * |
24 | * You should have received a copy of the GNU General Public License |
25 | * along with mLib; if not, write to the Free Software Foundation, |
26 | * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
27 | */ |
28 | |
29 | /*----- Revision history --------------------------------------------------* |
30 | * |
31 | * $Log: alloc.c,v $ |
32 | * Revision 1.1 1998/06/17 23:44:42 mdw |
33 | * Initial revision |
34 | * |
35 | */ |
36 | |
37 | /*----- Header files ------------------------------------------------------*/ |
38 | |
39 | /* --- ANSI headers --- */ |
40 | |
41 | #include <stdio.h> |
42 | #include <stdlib.h> |
43 | #include <string.h> |
44 | |
45 | /* --- Local headers --- */ |
46 | |
47 | #include "alloc.h" |
48 | #include "exc.h" |
49 | #include "track.h" |
50 | |
51 | /*----- Functions provided ------------------------------------------------*/ |
52 | |
53 | /* --- @xmalloc@ --- * |
54 | * |
55 | * Arguments: @size_t sz@ = size of block to allocate |
56 | * |
57 | * Returns: Pointer to allocated block. |
58 | * |
59 | * Use: Allocates memory. If there's not enough memory, the |
60 | * exception @EXC_NOMEM@ is thrown. |
61 | */ |
62 | |
63 | void *xmalloc(size_t sz) |
64 | { |
65 | void *p = malloc(sz); |
66 | if (!p) |
67 | THROW(EXC_NOMEM); |
68 | return (p); |
69 | } |
70 | |
71 | /* --- @xstrdup@ --- * |
72 | * |
73 | * Arguments: @const char *s@ = pointer to a string |
74 | * |
75 | * Returns: Pointer to a copy of the string. |
76 | * |
77 | * Use: Copies a string (like @strdup@ would, if it existed). If |
78 | * there's not enough memory, the exception @EXC_NOMEM@ is |
79 | * thrown. |
80 | */ |
81 | |
82 | char *xstrdup(const char *s) |
83 | { |
84 | size_t sz = strlen(s) + 1; |
85 | char *p = xmalloc(sz); |
86 | memcpy(p, s, sz); |
87 | return (p); |
88 | } |
89 | |
90 | /* --- @xrealloc@ --- * |
91 | * |
92 | * Arguments: @void *p@ = pointer to a block of memory |
93 | * @size_t sz@ = new size desired for the block |
94 | * |
95 | * Returns: Pointer to the resized memory block (which is almost |
96 | * certainly not in the same place any more). |
97 | * |
98 | * Use: Resizes a memory block. If there's not enough memory, the |
99 | * exception @EXC_NOMEM@ is thrown. |
100 | */ |
101 | |
102 | void *xrealloc(void *p, size_t sz) |
103 | { |
104 | p = realloc(p, sz); |
105 | if (!p) |
106 | THROW(EXC_NOMEM); |
107 | return (p); |
108 | } |
109 | |
110 | /*----- That's all, folks -------------------------------------------------*/ |