1 /* ========================================================================
2 * Copyright 1988-2006 University of Washington
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 *
11 * ========================================================================
12 */
13
14 /*
15 * Program: Free storage management routines
16 *
17 * Author: Mark Crispin
18 * Networks and Distributed Computing
19 * Computing & Communications
20 * University of Washington
21 * Administration Building, AG-44
22 * Seattle, WA 98195
23 * Internet: MRC@CAC.Washington.EDU
24 *
25 * Date: 1 August 1988
26 * Last Edited: 30 August 2006
27 */
28
29 /* Get a block of free storage
30 * Accepts: size of desired block
31 * Returns: free storage block
32 */
33
fs_get(size_t size)34 void *fs_get (size_t size)
35 {
36 void *block = malloc (size ? size : (size_t) 1);
37 if (!block) fatal ("Out of memory");
38 return (block);
39 }
40
41
42 /* Resize a block of free storage
43 * Accepts: ** pointer to current block
44 * new size
45 */
46
fs_resize(void ** block,size_t size)47 void fs_resize (void **block,size_t size)
48 {
49 if (!(*block = realloc (*block,size ? size : (size_t) 1)))
50 fatal ("Can't resize memory");
51 }
52
53
54 /* Return a block of free storage
55 * Accepts: ** pointer to free storage block
56 */
57
fs_give(void ** block)58 void fs_give (void **block)
59 {
60 free (*block);
61 *block = NIL;
62 }
63