mirror of https://github.com/python/cpython
122 lines
3.7 KiB
C
122 lines
3.7 KiB
C
#ifndef Py_MYMALLOC_H
|
|
#define Py_MYMALLOC_H
|
|
/***********************************************************
|
|
Copyright 1991-1995 by Stichting Mathematisch Centrum, Amsterdam,
|
|
The Netherlands.
|
|
|
|
All Rights Reserved
|
|
|
|
Permission to use, copy, modify, and distribute this software and its
|
|
documentation for any purpose and without fee is hereby granted,
|
|
provided that the above copyright notice appear in all copies and that
|
|
both that copyright notice and this permission notice appear in
|
|
supporting documentation, and that the names of Stichting Mathematisch
|
|
Centrum or CWI or Corporation for National Research Initiatives or
|
|
CNRI not be used in advertising or publicity pertaining to
|
|
distribution of the software without specific, written prior
|
|
permission.
|
|
|
|
While CWI is the initial source for this software, a modified version
|
|
is made available by the Corporation for National Research Initiatives
|
|
(CNRI) at the Internet address ftp://ftp.python.org.
|
|
|
|
STICHTING MATHEMATISCH CENTRUM AND CNRI DISCLAIM ALL WARRANTIES WITH
|
|
REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF
|
|
MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH
|
|
CENTRUM OR CNRI BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
|
|
DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
|
|
PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
|
|
TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
|
|
PERFORMANCE OF THIS SOFTWARE.
|
|
|
|
******************************************************************/
|
|
|
|
/* Lowest-level memory allocation interface */
|
|
|
|
#ifdef macintosh
|
|
#define ANY void
|
|
#endif
|
|
|
|
#ifdef __STDC__
|
|
#define ANY void
|
|
#endif
|
|
|
|
#ifdef __TURBOC__
|
|
#define ANY void
|
|
#endif
|
|
|
|
#ifdef __GNUC__
|
|
#define ANY void
|
|
#endif
|
|
|
|
#ifndef ANY
|
|
#define ANY char
|
|
#endif
|
|
|
|
#ifdef HAVE_STDLIB_H
|
|
#include <stdlib.h>
|
|
#endif
|
|
|
|
#ifdef __cplusplus
|
|
/* Move this down here since some C++ #include's don't like to be included
|
|
inside an extern "C" */
|
|
extern "C" {
|
|
#endif
|
|
|
|
#ifdef SYMANTEC__CFM68K__
|
|
#pragma lib_export on
|
|
#endif
|
|
|
|
#ifndef HAVE_STDLIB_H
|
|
extern ANY *malloc Py_PROTO((size_t));
|
|
extern ANY *calloc Py_PROTO((size_t, size_t));
|
|
extern ANY *realloc Py_PROTO((ANY *, size_t));
|
|
extern void free Py_PROTO((ANY *)); /* XXX sometimes int on Unix old systems */
|
|
#endif /* !HAVE_STDLIB */
|
|
|
|
#ifndef NULL
|
|
#define NULL ((ANY *)0)
|
|
#endif
|
|
|
|
#ifdef MALLOC_ZERO_RETURNS_NULL
|
|
/* XXX Always allocate one extra byte, since some malloc's return NULL
|
|
XXX for malloc(0) or realloc(p, 0). */
|
|
#define _PyMem_EXTRA 1
|
|
#else
|
|
#define _PyMem_EXTRA 0
|
|
#endif
|
|
|
|
#define PyMem_NEW(type, n) \
|
|
( (type *) malloc(_PyMem_EXTRA + (n) * sizeof(type)) )
|
|
#define PyMem_RESIZE(p, type, n) \
|
|
if ((p) == NULL) \
|
|
(p) = (type *) malloc(_PyMem_EXTRA + (n) * sizeof(type)); \
|
|
else \
|
|
(p) = (type *) realloc((ANY *)(p), \
|
|
_PyMem_EXTRA + (n) * sizeof(type))
|
|
#define PyMem_DEL(p) free((ANY *)p)
|
|
#define PyMem_XDEL(p) if ((p) == NULL) ; else PyMem_DEL(p)
|
|
|
|
|
|
/* Two sets of function wrappers around malloc and friends; useful if
|
|
you need to be sure that you are using the same memory allocator as
|
|
Python. Note that the wrappers make sure that allocating 0 bytes
|
|
returns a non-NULL pointer, even if the underlying malloc doesn't.
|
|
The Python interpreter continues to use PyMem_NEW etc. */
|
|
|
|
/* These wrappers around malloc call PyErr_NoMemory() on failure */
|
|
extern ANY *Py_Malloc Py_PROTO((size_t));
|
|
extern ANY *Py_Realloc Py_PROTO((ANY *, size_t));
|
|
extern void Py_Free Py_PROTO((ANY *));
|
|
|
|
/* These wrappers around malloc *don't* call anything on failure */
|
|
extern ANY *PyMem_Malloc Py_PROTO((size_t));
|
|
extern ANY *PyMem_Realloc Py_PROTO((ANY *, size_t));
|
|
extern void PyMem_Free Py_PROTO((ANY *));
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* !Py_MYMALLOC_H */
|