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Diffstat (limited to 'libiberty/xmalloc.c')
| -rw-r--r-- | libiberty/xmalloc.c | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/libiberty/xmalloc.c b/libiberty/xmalloc.c new file mode 100644 index 0000000..1083790 --- /dev/null +++ b/libiberty/xmalloc.c @@ -0,0 +1,173 @@ +/* memory allocation routines with error checking. + Copyright 1989, 90, 91, 92, 93, 94 Free Software Foundation, Inc. + +This file is part of the libiberty library. +Libiberty is free software; you can redistribute it and/or +modify it under the terms of the GNU Library General Public +License as published by the Free Software Foundation; either +version 2 of the License, or (at your option) any later version. + +Libiberty is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with libiberty; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, +Boston, MA 02111-1307, USA. */ + +#include "ansidecl.h" +#include "libiberty.h" + +#include <stdio.h> + +#ifdef __STDC__ +#include <stddef.h> +#else +#define size_t unsigned long +#define ptrdiff_t long +#endif + +#if VMS +#include <stdlib.h> +#include <unixlib.h> +#else +/* For systems with larger pointers than ints, these must be declared. */ +PTR malloc PARAMS ((size_t)); +PTR realloc PARAMS ((PTR, size_t)); +PTR calloc PARAMS ((size_t, size_t)); +PTR sbrk PARAMS ((ptrdiff_t)); +#endif + +/* The program name if set. */ +static const char *name = ""; + +#if !defined (__CYGWIN__) && defined (__CYGWIN32__) +#define __CYGWIN__ 1 +#endif + +#if ! defined (_WIN32) || defined (__CYGWIN__) || defined (__UWIN__) +/* The initial sbrk, set when the program name is set. Not used for win32 + ports other than cygwin32. */ +static char *first_break = NULL; +#endif /* ! _WIN32 || __CYGWIN __ || __UWIN__ */ + +void +xmalloc_set_program_name (s) + const char *s; +{ + name = s; +#if ! defined (_WIN32) || defined (__CYGWIN__) || defined (__UWIN__) + /* Win32 ports other than cygwin32 don't have brk() */ + if (first_break == NULL) + first_break = (char *) sbrk (0); +#endif /* ! _WIN32 || __CYGWIN __ || __UWIN__ */ +} + +PTR +xmalloc (size) + size_t size; +{ + PTR newmem; + + if (size == 0) + size = 1; + newmem = malloc (size); + if (!newmem) + { +#if ! defined (_WIN32) || defined (__CYGWIN__) || defined (__UWIN__) + extern char **environ; + size_t allocated; + + if (first_break != NULL) + allocated = (char *) sbrk (0) - first_break; + else + allocated = (char *) sbrk (0) - (char *) &environ; + fprintf (stderr, + "\n%s%sCan not allocate %lu bytes after allocating %lu bytes\n", + name, *name ? ": " : "", + (unsigned long) size, (unsigned long) allocated); +#else + fprintf (stderr, + "\n%s%sCan not allocate %lu bytes\n", + name, *name ? ": " : "", + (unsigned long) size); +#endif /* ! _WIN32 || __CYGWIN __ || __UWIN__ */ + xexit (1); + } + return (newmem); +} + +PTR +xcalloc (nelem, elsize) + size_t nelem, elsize; +{ + PTR newmem; + + if (nelem == 0 || elsize == 0) + nelem = elsize = 1; + + newmem = calloc (nelem, elsize); + if (!newmem) + { +#if ! defined (_WIN32) || defined (__CYGWIN__) + extern char **environ; + size_t allocated; + + if (first_break != NULL) + allocated = (char *) sbrk (0) - first_break; + else + allocated = (char *) sbrk (0) - (char *) &environ; + fprintf (stderr, + "\n%s%sCan not allocate %lu bytes after allocating %lu bytes\n", + name, *name ? ": " : "", + (unsigned long) (nelem * elsize), (unsigned long) allocated); +#else + fprintf (stderr, + "\n%s%sCan not allocate %lu bytes\n", + name, *name ? ": " : "", + (unsigned long) (nelem * elsize)); +#endif /* ! _WIN32 || __CYGWIN __ */ + xexit (1); + } + return (newmem); +} + +PTR +xrealloc (oldmem, size) + PTR oldmem; + size_t size; +{ + PTR newmem; + + if (size == 0) + size = 1; + if (!oldmem) + newmem = malloc (size); + else + newmem = realloc (oldmem, size); + if (!newmem) + { +#ifndef __MINGW32__ + extern char **environ; + size_t allocated; + + if (first_break != NULL) + allocated = (char *) sbrk (0) - first_break; + else + allocated = (char *) sbrk (0) - (char *) &environ; + fprintf (stderr, + "\n%s%sCan not reallocate %lu bytes after allocating %lu bytes\n", + name, *name ? ": " : "", + (unsigned long) size, (unsigned long) allocated); +#else + fprintf (stderr, + "\n%s%sCan not reallocate %lu bytes\n", + name, *name ? ": " : "", + (unsigned long) size); +#endif /* __MINGW32__ */ + xexit (1); + } + return (newmem); +} |