projects / bison.git / blame
| Commit | Line | Data |
|---|---|---|
| d7913476 | 1 | /* xalloc.h -- malloc with out-of-memory checking |
| 0d8f3c8a | 2 | Copyright (C) 1990-1998, 1999, 2000 Free Software Foundation, Inc. |
| d7913476 AD |
3 | |
| 4 | This program is free software; you can redistribute it and/or modify | |
| 5 | it under the terms of the GNU General Public License as published by | |
| 6 | the Free Software Foundation; either version 2, or (at your option) | |
| 7 | any later version. | |
| 8 | ||
| 9 | This program is distributed in the hope that it will be useful, | |
| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 12 | GNU General Public License for more details. | |
| 13 | ||
| 14 | You should have received a copy of the GNU General Public License | |
| 15 | along with this program; if not, write to the Free Software Foundation, | |
| 16 | Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
| 17 | ||
| 18 | #ifndef XALLOC_H_ | |
| 19 | # define XALLOC_H_ | |
| 20 | ||
| 21 | # ifndef PARAMS | |
| 22 | # if defined PROTOTYPES || (defined __STDC__ && __STDC__) | |
| 23 | # define PARAMS(Args) Args | |
| 24 | # else | |
| 25 | # define PARAMS(Args) () | |
| 26 | # endif | |
| 27 | # endif | |
| 28 | ||
| 29 | # ifndef __attribute__ | |
| 30 | # if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 8) || __STRICT_ANSI__ | |
| 31 | # define __attribute__(x) | |
| 32 | # endif | |
| 33 | # endif | |
| 34 | ||
| 35 | # ifndef ATTRIBUTE_NORETURN | |
| 36 | # define ATTRIBUTE_NORETURN __attribute__ ((__noreturn__)) | |
| 37 | # endif | |
| 38 | ||
| 39 | /* Exit value when the requested amount of memory is not available. | |
| 40 | It is initialized to EXIT_FAILURE, but the caller may set it to | |
| 41 | some other value. */ | |
| 42 | extern int xalloc_exit_failure; | |
| 43 | ||
| 44 | /* If this pointer is non-zero, run the specified function upon each | |
| 45 | allocation failure. It is initialized to zero. */ | |
| 46 | extern void (*xalloc_fail_func) PARAMS ((void)); | |
| 47 | ||
| 48 | /* If XALLOC_FAIL_FUNC is undefined or a function that returns, this | |
| 0d8f3c8a AD |
49 | message is output. It is translated via gettext. |
| 50 | Its value is "memory exhausted". */ | |
| 51 | extern char const xalloc_msg_memory_exhausted[]; | |
| d7913476 AD |
52 | |
| 53 | /* This function is always triggered when memory is exhausted. It is | |
| 54 | in charge of honoring the three previous items. This is the | |
| 55 | function to call when one wants the program to die because of a | |
| 56 | memory allocation failure. */ | |
| 57 | extern void xalloc_die PARAMS ((void)) ATTRIBUTE_NORETURN; | |
| 58 | ||
| 59 | void *xmalloc PARAMS ((size_t n)); | |
| 60 | void *xcalloc PARAMS ((size_t n, size_t s)); | |
| 61 | void *xrealloc PARAMS ((void *p, size_t n)); | |
| 62 | char *xstrdup PARAMS ((const char *str)); | |
| 63 | ||
| 64 | # define XMALLOC(Type, N_items) ((Type *) xmalloc (sizeof (Type) * (N_items))) | |
| 65 | # define XCALLOC(Type, N_items) ((Type *) xcalloc (sizeof (Type), (N_items))) | |
| 66 | # define XREALLOC(Ptr, Type, N_items) \ | |
| 67 | ((Type *) xrealloc ((void *) (Ptr), sizeof (Type) * (N_items))) | |
| 68 | ||
| 69 | /* Declare and alloc memory for VAR of type TYPE. */ | |
| 70 | # define NEW(Type, Var) Type *(Var) = XMALLOC (Type, 1) | |
| 71 | ||
| 72 | /* Free VAR only if non NULL. */ | |
| 73 | # define XFREE(Var) \ | |
| 74 | do { \ | |
| 75 | if (Var) \ | |
| 76 | free (Var); \ | |
| 77 | } while (0) | |
| 78 | ||
| 79 | /* Return a pointer to a malloc'ed copy of the array SRC of NUM elements. */ | |
| 80 | # define CCLONE(Src, Num) \ | |
| 81 | (memcpy (xmalloc (sizeof (*Src) * (Num)), (Src), sizeof (*Src) * (Num))) | |
| 82 | ||
| 83 | /* Return a malloc'ed copy of SRC. */ | |
| 84 | # define CLONE(Src) CCLONE (Src, 1) | |
| 85 | ||
| 86 | ||
| 87 | #endif /* !XALLOC_H_ */ |