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. */
+not, write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
+Boston, MA 02110-1301, USA. */
+/*
+
+@deftypefn Replacement void* xmalloc (size_t)
+
+Allocate memory without fail. If @code{malloc} fails, this will print
+a message to @code{stderr} (using the name set by
+@code{xmalloc_set_program_name},
+if any) and then call @code{xexit}. Note that it is therefore safe for
+a program to contain @code{#define malloc xmalloc} in its source.
+
+@end deftypefn
+
+@deftypefn Replacement void* xrealloc (void *@var{ptr}, size_t @var{size})
+Reallocate memory without fail. This routine functions like @code{realloc},
+but will behave the same as @code{xmalloc} if memory cannot be found.
+
+@end deftypefn
+
+@deftypefn Replacement void* xcalloc (size_t @var{nelem}, size_t @var{elsize})
+
+Allocate memory without fail, and set it to zero. This routine functions
+like @code{calloc}, but will behave the same as @code{xmalloc} if memory
+cannot be found.
+
+@end deftypefn
+
+@deftypefn Replacement void xmalloc_set_program_name (const char *@var{name})
+
+You can use this to set the name of the program used by
+@code{xmalloc_failed} when printing a failure message.
+
+@end deftypefn
+
+@deftypefn Replacement void xmalloc_failed (size_t)
+
+This function is not meant to be called by client code, and is listed
+here for completeness only. If any of the allocation routines fail, this
+function will be called to print an error message and terminate execution.
+
+@end deftypefn
+
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
#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
+# if HAVE_STDLIB_H && HAVE_UNISTD_H && HAVE_DECL_MALLOC \
+ && HAVE_DECL_REALLOC && HAVE_DECL_CALLOC && HAVE_DECL_SBRK
+# include <stdlib.h>
+# include <unistd.h>
+# else
+# ifdef __cplusplus
+extern "C" {
+# endif /* __cplusplus */
+void *malloc (size_t);
+void *realloc (void *, size_t);
+void *calloc (size_t, size_t);
+void *sbrk (ptrdiff_t);
+# ifdef __cplusplus
+}
+# endif /* __cplusplus */
+# endif /* HAVE_STDLIB_H ... */
+#endif /* VMS */
/* The program name if set. */
static const char *name = "";
-#if ! defined (_WIN32) || defined (__CYGWIN__) || defined (_UWIN)
+#ifdef HAVE_SBRK
/* 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 */
+#endif /* HAVE_SBRK */
void
-xmalloc_set_program_name (s)
- const char *s;
+xmalloc_set_program_name (const char *s)
{
name = s;
-#if ! defined (_WIN32) || defined (__CYGWIN__) || defined (_UWIN)
+#ifdef HAVE_SBRK
/* Win32 ports other than cygwin32 don't have brk() */
if (first_break == NULL)
first_break = (char *) sbrk (0);
-#endif /* ! _WIN32 || __CYGWIN__ || _UWIN */
+#endif /* HAVE_SBRK */
}
+void
+xmalloc_failed (size_t size)
+{
+#ifdef HAVE_SBRK
+ 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%sout of memory allocating %lu bytes after a total of %lu bytes\n",
+ name, *name ? ": " : "",
+ (unsigned long) size, (unsigned long) allocated);
+#else /* HAVE_SBRK */
+ fprintf (stderr,
+ "\n%s%sout of memory allocating %lu bytes\n",
+ name, *name ? ": " : "",
+ (unsigned long) size);
+#endif /* HAVE_SBRK */
+ xexit (1);
+}
+
PTR
-xmalloc (size)
- size_t size;
+xmalloc (size_t size)
{
PTR newmem;
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);
- }
+ xmalloc_failed (size);
+
return (newmem);
}
PTR
-xcalloc (nelem, elsize)
- size_t nelem, elsize;
+xcalloc (size_t nelem, size_t elsize)
{
PTR newmem;
newmem = calloc (nelem, elsize);
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) (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__ || _UWIN */
- xexit (1);
- }
+ xmalloc_failed (nelem * elsize);
+
return (newmem);
}
PTR
-xrealloc (oldmem, size)
- PTR oldmem;
- size_t size;
+xrealloc (PTR oldmem, size_t size)
{
PTR newmem;
else
newmem = realloc (oldmem, 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 reallocate %lu bytes after allocating %lu bytes\n",
- name, *name ? ": " : "",
- (unsigned long) size, (unsigned long) allocated);
-#else /* ! _WIN32 || __CYGWIN__ || _UWIN */
- fprintf (stderr,
- "\n%s%sCan not reallocate %lu bytes\n",
- name, *name ? ": " : "",
- (unsigned long) size);
-#endif /* ! _WIN32 || __CYGWIN__ || _UWIN */
- xexit (1);
- }
+ xmalloc_failed (size);
+
return (newmem);
}
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