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comparison lib/allocator.h @ 14522:39a9dbe4bfe3

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areadlink, areadlinkat: rewrite in terms of careadlinkat * lib/areadlink.c, lib/areadlinkat.c: Include careadlinkat.h instead of errno.h, limits.h, stdint.h, stdlib.h, string.h, unistd.h. (SSIZE_MAX, INITIAL_BUF_SIZE): Remove. (malloc, realloc): Remove #undefs. (areadlink, areadlinkat): Rewrite in terms of careadlinkat. * modules/areadlink (Depends-on): Add careadlinkat. Remove readlink, ssize_t, stdint, unistd. * modules/areadlinkat (Depends-on): Add careadlinkat. Remove areadlink, stdint. careadlinkat: new module * lib/allocator.h, lib/careadlinkat.h, lib/careadlinkat.c: * modules/careadlinkat: New files, written by me with a review and feedback from Ben Pfaff in <http://lists.gnu.org/archive/html/bug-gnulib/2011-04/msg00008.html>.
author Paul Eggert <eggert@cs.ucla.edu>
date Tue, 05 Apr 2011 09:52:32 -0700
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children 10946c7debf8
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14521:bcaffcfa06a0 14522:39a9dbe4bfe3
1 /* Memory allocators such as malloc+free.
2
3 Copyright (C) 2011 Free Software Foundation, Inc.
4
5 This program is free software: you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 3 of the License, or
8 (at your option) any later version.
9
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
14
15 You should have received a copy of the GNU General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>. */
17
18 /* Written by Paul Eggert. */
19
20 #ifndef _GL_ALLOCATOR_H
21
22 #include <stddef.h>
23
24 /* An object describing a memory allocator family. */
25
26 struct allocator
27 {
28 /* Do not use GCC attributes such as __attribute__ ((malloc)) with
29 the function types pointed at by these members, because these
30 attributes do not work with pointers to functions. See
31 <http://lists.gnu.org/archive/html/bug-gnulib/2011-04/msg00007.html>. */
32
33 /* Call MALLOC to allocate memory, like 'malloc'. On failure MALLOC
34 should return NULL, though not necessarily set errno. When given
35 a zero size it may return NULL even if successful. */
36 void *(*malloc) (size_t);
37
38 /* If nonnull, call REALLOC to reallocate memory, like 'realloc'.
39 On failure REALLOC should return NULL, though not necessarily set
40 errno. When given a zero size it may return NULL even if
41 successful. */
42 void *(*realloc) (void *, size_t);
43
44 /* Call FREE to free memory, like 'free'. */
45 void (*free) (void *);
46
47 /* If nonnull, call DIE if MALLOC or REALLOC fails. DIE should not
48 return. DIE can be used by code that detects memory overflow
49 while calculating sizes to be passed to MALLOC or REALLOC. */
50 void (*die) (void);
51 };
52
53 #endif