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1 | /* -*-c-*- |
| 2 | * |
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3 | * $Id: alloc.c,v 1.2 1999/05/05 18:50:31 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 |
| 25 | * License along with mLib; if not, write to the Free Software |
| 26 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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27 | */ |
| 28 | |
| 29 | /*----- Revision history --------------------------------------------------* |
| 30 | * |
| 31 | * $Log: alloc.c,v $ |
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32 | * Revision 1.2 1999/05/05 18:50:31 mdw |
| 33 | * Change licensing conditions to LGPL. |
| 34 | * |
| 35 | * Revision 1.1.1.1 1998/06/17 23:44:42 mdw |
| 36 | * Initial version of mLib |
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37 | * |
| 38 | */ |
| 39 | |
| 40 | /*----- Header files ------------------------------------------------------*/ |
| 41 | |
| 42 | /* --- ANSI headers --- */ |
| 43 | |
| 44 | #include <stdio.h> |
| 45 | #include <stdlib.h> |
| 46 | #include <string.h> |
| 47 | |
| 48 | /* --- Local headers --- */ |
| 49 | |
| 50 | #include "alloc.h" |
| 51 | #include "exc.h" |
| 52 | #include "track.h" |
| 53 | |
| 54 | /*----- Functions provided ------------------------------------------------*/ |
| 55 | |
| 56 | /* --- @xmalloc@ --- * |
| 57 | * |
| 58 | * Arguments: @size_t sz@ = size of block to allocate |
| 59 | * |
| 60 | * Returns: Pointer to allocated block. |
| 61 | * |
| 62 | * Use: Allocates memory. If there's not enough memory, the |
| 63 | * exception @EXC_NOMEM@ is thrown. |
| 64 | */ |
| 65 | |
| 66 | void *xmalloc(size_t sz) |
| 67 | { |
| 68 | void *p = malloc(sz); |
| 69 | if (!p) |
| 70 | THROW(EXC_NOMEM); |
| 71 | return (p); |
| 72 | } |
| 73 | |
| 74 | /* --- @xstrdup@ --- * |
| 75 | * |
| 76 | * Arguments: @const char *s@ = pointer to a string |
| 77 | * |
| 78 | * Returns: Pointer to a copy of the string. |
| 79 | * |
| 80 | * Use: Copies a string (like @strdup@ would, if it existed). If |
| 81 | * there's not enough memory, the exception @EXC_NOMEM@ is |
| 82 | * thrown. |
| 83 | */ |
| 84 | |
| 85 | char *xstrdup(const char *s) |
| 86 | { |
| 87 | size_t sz = strlen(s) + 1; |
| 88 | char *p = xmalloc(sz); |
| 89 | memcpy(p, s, sz); |
| 90 | return (p); |
| 91 | } |
| 92 | |
| 93 | /* --- @xrealloc@ --- * |
| 94 | * |
| 95 | * Arguments: @void *p@ = pointer to a block of memory |
| 96 | * @size_t sz@ = new size desired for the block |
| 97 | * |
| 98 | * Returns: Pointer to the resized memory block (which is almost |
| 99 | * certainly not in the same place any more). |
| 100 | * |
| 101 | * Use: Resizes a memory block. If there's not enough memory, the |
| 102 | * exception @EXC_NOMEM@ is thrown. |
| 103 | */ |
| 104 | |
| 105 | void *xrealloc(void *p, size_t sz) |
| 106 | { |
| 107 | p = realloc(p, sz); |
| 108 | if (!p) |
| 109 | THROW(EXC_NOMEM); |
| 110 | return (p); |
| 111 | } |
| 112 | |
| 113 | /*----- That's all, folks -------------------------------------------------*/ |
~mdw / mLib / blame