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/* GNU Objective C Runtime Miscellaneous
Copyright (C) 1993, 1994, 1995, 1996, 1997, 2002, 2009
Free Software Foundation, Inc.
Contributed by Kresten Krab Thorup
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 3, or (at your option) any
later version.
GCC 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 General Public License
for more details.
Under Section 7 of GPL version 3, you are granted additional
permissions described in the GCC Runtime Library Exception, version
3.1, as published by the Free Software Foundation.
You should have received a copy of the GNU General Public License and
a copy of the GCC Runtime Library Exception along with this program;
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
<http://www.gnu.org/licenses/>. */
#define __USE_FIXED_PROTOTYPES__
#include <stdlib.h>
#include "objc/runtime.h"
/*
** Error handler function
** NULL so that default is to just print to stderr
*/
static objc_error_handler _objc_error_handler = NULL;
/* Trigger an objc error */
void
objc_error (id object, int code, const char *fmt, ...)
{
va_list ap;
va_start (ap, fmt);
objc_verror (object, code, fmt, ap);
va_end (ap);
}
/* Trigger an objc error */
void
objc_verror (id object, int code, const char *fmt, va_list ap)
{
BOOL result = NO;
/* Call the error handler if its there
Otherwise print to stderr */
if (_objc_error_handler)
result = (*_objc_error_handler) (object, code, fmt, ap);
else
vfprintf (stderr, fmt, ap);
/* Continue if the error handler says its ok
Otherwise abort the program */
if (result)
return;
else
abort ();
}
/* Set the error handler */
objc_error_handler
objc_set_error_handler (objc_error_handler func)
{
objc_error_handler temp = _objc_error_handler;
_objc_error_handler = func;
return temp;
}
/*
** Standard functions for memory allocation and disposal.
** Users should use these functions in their ObjC programs so
** that they work properly with garbage collectors as well as
** can take advantage of the exception/error handling available.
*/
void *
objc_malloc (size_t size)
{
void *res = (void *) (*_objc_malloc) (size);
if (! res)
objc_error (nil, OBJC_ERR_MEMORY, "Virtual memory exhausted\n");
return res;
}
void *
objc_atomic_malloc (size_t size)
{
void *res = (void *) (*_objc_atomic_malloc) (size);
if (! res)
objc_error (nil, OBJC_ERR_MEMORY, "Virtual memory exhausted\n");
return res;
}
void *
objc_valloc (size_t size)
{
void *res = (void *) (*_objc_valloc) (size);
if (! res)
objc_error (nil, OBJC_ERR_MEMORY, "Virtual memory exhausted\n");
return res;
}
void *
objc_realloc (void *mem, size_t size)
{
void *res = (void *) (*_objc_realloc) (mem, size);
if (! res)
objc_error (nil, OBJC_ERR_MEMORY, "Virtual memory exhausted\n");
return res;
}
void *
objc_calloc (size_t nelem, size_t size)
{
void *res = (void *) (*_objc_calloc) (nelem, size);
if (! res)
objc_error (nil, OBJC_ERR_MEMORY, "Virtual memory exhausted\n");
return res;
}
void
objc_free (void *mem)
{
(*_objc_free) (mem);
}
/*
** Hook functions for memory allocation and disposal.
** This makes it easy to substitute garbage collection systems
** such as Boehm's GC by assigning these function pointers
** to the GC's allocation routines. By default these point
** to the ANSI standard malloc, realloc, free, etc.
**
** Users should call the normal objc routines above for
** memory allocation and disposal within their programs.
*/
#if OBJC_WITH_GC
#include <gc.h>
static void *
GC_calloc (size_t nelem, size_t size)
{
void *p = GC_malloc (nelem * size);
if (! p)
objc_error (nil, OBJC_ERR_MEMORY, "Virtual memory exhausted!\n");
memset (p, 0, nelem * size);
return p;
}
static void
noFree (void *p)
{
}
void *(*_objc_malloc) (size_t) = GC_malloc;
void *(*_objc_atomic_malloc) (size_t) = GC_malloc_atomic;
void *(*_objc_valloc) (size_t) = GC_malloc;
void *(*_objc_realloc) (void *, size_t) = GC_realloc;
void *(*_objc_calloc) (size_t, size_t) = GC_calloc;
void (*_objc_free) (void *) = noFree;
#else /* !OBJC_WITH_GC */
void *(*_objc_malloc) (size_t) = malloc;
void *(*_objc_atomic_malloc) (size_t) = malloc;
void *(*_objc_valloc) (size_t) = malloc;
void *(*_objc_realloc) (void *, size_t) = realloc;
void *(*_objc_calloc) (size_t, size_t) = calloc;
void (*_objc_free) (void *) = free;
#endif /* !OBJC_WITH_GC */
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