Mercurial > hg > octave-nkf > gnulib-hg
annotate lib/pagealign_alloc.h @ 6912:314715e0260d
Merge from coreutils.
| author | Paul Eggert <eggert@cs.ucla.edu> |
|---|---|
| date | Mon, 03 Jul 2006 08:32:46 +0000 |
| parents | a48fb0e98c8c |
| children | bbbbbf4cd1c5 |
| rev | line source |
|---|---|
| 5673 | 1 /* Memory allocation aligned to system page boundaries. |
| 2 | |
| 3 Copyright (C) 2005 Free Software Foundation, Inc. | |
| 4 | |
| 5 This program is free software; you can redistribute it and/or modify it | |
| 6 under the terms of the GNU General Public License as published | |
| 7 by the Free Software Foundation; either version 2, or (at your option) | |
| 8 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 GNU | |
| 13 General Public License for more details. | |
| 14 | |
| 15 You should have received a copy of the GNU General Public | |
| 16 License along with this program; if not, write to the Free Software | |
|
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Paul Eggert <eggert@cs.ucla.edu>
parents:
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diff
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|
17 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, |
| 5673 | 18 USA. */ |
| 19 | |
| 20 #ifndef _PAGEALIGN_ALLOC_H | |
| 21 # define _PAGEALIGN_ALLOC_H | |
| 22 | |
| 23 # include <stddef.h> | |
| 24 | |
| 25 /* Allocate a block of memory of SIZE bytes, aligned on a system page | |
| 26 boundary. | |
| 27 If SIZE is not a multiple of the system page size, it will be rounded up | |
| 28 to the next multiple. | |
|
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6868adf039ec
Note pagealign_alloc() sets errno on failure.
Bruno Haible <bruno@clisp.org>
parents:
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29 Return a pointer to the start of the memory block. Upon allocation failure, |
|
6868adf039ec
Note pagealign_alloc() sets errno on failure.
Bruno Haible <bruno@clisp.org>
parents:
5675
diff
changeset
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30 return NULL and set errno. */ |
| 5673 | 31 extern void *pagealign_alloc (size_t size); |
| 32 | |
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Check or don't check for allocation failure? Provide both alternatives.
Bruno Haible <bruno@clisp.org>
parents:
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diff
changeset
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33 /* Like pagealign_alloc, except it exits the program if the allocation |
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9fb0004d9fa6
Check or don't check for allocation failure? Provide both alternatives.
Bruno Haible <bruno@clisp.org>
parents:
5673
diff
changeset
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34 fails. */ |
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9fb0004d9fa6
Check or don't check for allocation failure? Provide both alternatives.
Bruno Haible <bruno@clisp.org>
parents:
5673
diff
changeset
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35 extern void *pagealign_xalloc (size_t size); |
|
9fb0004d9fa6
Check or don't check for allocation failure? Provide both alternatives.
Bruno Haible <bruno@clisp.org>
parents:
5673
diff
changeset
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36 |
| 5673 | 37 /* Free a memory block. |
|
5675
9fb0004d9fa6
Check or don't check for allocation failure? Provide both alternatives.
Bruno Haible <bruno@clisp.org>
parents:
5673
diff
changeset
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38 PTR must be a non-NULL pointer returned by pagealign_alloc or |
|
9fb0004d9fa6
Check or don't check for allocation failure? Provide both alternatives.
Bruno Haible <bruno@clisp.org>
parents:
5673
diff
changeset
|
39 pagealign_xalloc. */ |
| 5673 | 40 extern void pagealign_free (void *ptr); |
| 41 | |
| 42 #endif /* _PAGEALIGN_ALLOC_H */ |