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cpython/Include/mymalloc.h

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* Added support for X11 modules. * Makefile: change location of FORMS library. * posixmodule.c: turn #if 0 into #ifdef MSDOS (stuff in unistd.h or not) * Almost all .h files: added CPP magic to avoid duplicate inclusions and to support inclusion from C++.
1993-07-28 09:05:47 +00:00
#ifndef Py_MYMALLOC_H
#define Py_MYMALLOC_H
* renamed malloc.h mymalloc.h, and added MALLARG as the type of the argument to malloc() (size_t or unsigned int) * listobject.c: check for overflow of the size of the object, so things like range(0x7fffffff) will raise MemoryError instead of calling malloc() with -4 (and then crashing -- malloc's fault)
1992-08-19 16:46:30 +00:00
/***********************************************************
Added 1995 copyright. object.h: made sizes and refcnts signed ints. stringobject.h: make getstrsize() signed int. methodobject.h: add METH_VARARGS and METH_FREENAME flag bit definitions.
1995-01-04 19:06:22 +00:00
Copyright 1991-1995 by Stichting Mathematisch Centrum, Amsterdam,
The Netherlands.
* renamed malloc.h mymalloc.h, and added MALLARG as the type of the argument to malloc() (size_t or unsigned int) * listobject.c: check for overflow of the size of the object, so things like range(0x7fffffff) will raise MemoryError instead of calling malloc() with -4 (and then crashing -- malloc's fault)
1992-08-19 16:46:30 +00:00
All Rights Reserved
New permission notice, includes CNRI.
1996-10-25 14:44:06 +00:00
Permission to use, copy, modify, and distribute this software and its
documentation for any purpose and without fee is hereby granted,
* renamed malloc.h mymalloc.h, and added MALLARG as the type of the argument to malloc() (size_t or unsigned int) * listobject.c: check for overflow of the size of the object, so things like range(0x7fffffff) will raise MemoryError instead of calling malloc() with -4 (and then crashing -- malloc's fault)
1992-08-19 16:46:30 +00:00
provided that the above copyright notice appear in all copies and that
New permission notice, includes CNRI.
1996-10-25 14:44:06 +00:00
both that copyright notice and this permission notice appear in
* renamed malloc.h mymalloc.h, and added MALLARG as the type of the argument to malloc() (size_t or unsigned int) * listobject.c: check for overflow of the size of the object, so things like range(0x7fffffff) will raise MemoryError instead of calling malloc() with -4 (and then crashing -- malloc's fault)
1992-08-19 16:46:30 +00:00
supporting documentation, and that the names of Stichting Mathematisch
New permission notice, includes CNRI.
1996-10-25 14:44:06 +00:00
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.
* renamed malloc.h mymalloc.h, and added MALLARG as the type of the argument to malloc() (size_t or unsigned int) * listobject.c: check for overflow of the size of the object, so things like range(0x7fffffff) will raise MemoryError instead of calling malloc() with -4 (and then crashing -- malloc's fault)
1992-08-19 16:46:30 +00:00
******************************************************************/
/* Lowest-level memory allocation interface */
#ifdef macintosh
#define ANY void
#endif
#ifdef __STDC__
#define ANY void
#endif
* compile.[ch]: support for lambda() * PROTO.h, mymalloc.h: added #ifdefs for TURBOC and GNUC. * allobjects.h: added #include "rangeobject.h" * Grammar: added lambda_input; relaxed syntax for exec. * bltinmodule.c: added bagof, map, reduce, lambda, xrange. * tupleobject.[ch]: added resizetuple(). * rangeobject.[ch]: new object type to speed up range operations (not convinced this is needed!!!)
1993-10-26 17:58:25 +00:00
#ifdef __TURBOC__
#define ANY void
#endif
#ifdef __GNUC__
#define ANY void
#endif
* renamed malloc.h mymalloc.h, and added MALLARG as the type of the argument to malloc() (size_t or unsigned int) * listobject.c: check for overflow of the size of the object, so things like range(0x7fffffff) will raise MemoryError instead of calling malloc() with -4 (and then crashing -- malloc's fault)
1992-08-19 16:46:30 +00:00
#ifndef ANY
#define ANY char
#endif
Merge alpha100 branch back to main trunk
1994-08-01 11:34:53 +00:00
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
changes for C++ (Tim MacKenzie)
1995-01-10 17:43:33 +00:00
#endif
Vladimir Marangozov's long-awaited malloc restructuring. For more comments, read the patches@python.org archives. For documentation read the comments in mymalloc.h and objimpl.h. (This is not exactly what Vladimir posted to the patches list; I've made a few changes, and Vladimir sent me a fix in private email for a problem that only occurs in debug mode. I'm also holding back on his change to main.c, which seems unnecessary to me.)
2000-05-03 23:44:39 +00:00
#include "myproto.h"
changes for C++ (Tim MacKenzie)
1995-01-10 17:43:33 +00:00
#ifdef __cplusplus
Added Py_Malloc and friends as well as PyMem_Malloc and friends.
1997-08-05 01:59:22 +00:00
/* Move this down here since some C++ #include's don't like to be included
inside an extern "C" */
changes for C++ (Tim MacKenzie)
1995-01-10 17:43:33 +00:00
extern "C" {
#endif
Changed ifdef __CFM68K__ to ifdef SYMANTEC__CFM68K__: CW has its own unique set of ideosyncracies:-(
1995-06-27 13:12:09 +00:00
#ifdef SYMANTEC__CFM68K__
changes for Mac CFM-68K
1995-02-18 14:50:12 +00:00
#pragma lib_export on
#endif
Vladimir Marangozov's long-awaited malloc restructuring. For more comments, read the patches@python.org archives. For documentation read the comments in mymalloc.h and objimpl.h. (This is not exactly what Vladimir posted to the patches list; I've made a few changes, and Vladimir sent me a fix in private email for a problem that only occurs in debug mode. I'm also holding back on his change to main.c, which seems unnecessary to me.)
2000-05-03 23:44:39 +00:00
#ifndef DL_IMPORT /* declarations for DLL import */
#define DL_IMPORT(RTYPE) RTYPE
Completely disable the declarations for malloc() and friends. Use #ifdef though, so if you still need these for a really backwards compiler you know what to do.
1997-08-21 16:13:37 +00:00
#endif
Merge alpha100 branch back to main trunk
1994-08-01 11:34:53 +00:00
* renamed malloc.h mymalloc.h, and added MALLARG as the type of the argument to malloc() (size_t or unsigned int) * listobject.c: check for overflow of the size of the object, so things like range(0x7fffffff) will raise MemoryError instead of calling malloc() with -4 (and then crashing -- malloc's fault)
1992-08-19 16:46:30 +00:00
#ifndef NULL
Merge alpha100 branch back to main trunk
1994-08-01 11:34:53 +00:00
#define NULL ((ANY *)0)
* renamed malloc.h mymalloc.h, and added MALLARG as the type of the argument to malloc() (size_t or unsigned int) * listobject.c: check for overflow of the size of the object, so things like range(0x7fffffff) will raise MemoryError instead of calling malloc() with -4 (and then crashing -- malloc's fault)
1992-08-19 16:46:30 +00:00
#endif
Only add 1 byte to all malloc calls when it is known that malloc(0) or realloc(p, 0) returns NULL. See changes to configure script to be checked in later.
1997-07-10 22:40:54 +00:00
#ifdef MALLOC_ZERO_RETURNS_NULL
* mymalloc.h: always allocate one extra byte, since some malloc's return NULL for malloc(0) or realloc(p, 0). (This should be done differently than wasting one byte, but alas...) * Moved "add'l libraries" option in Makefile to an earlier place. * Remove argument compatibility hacks (b) and (c). * Add grey2mono, dither2mono and mono2grey to imageop. * Dup the fd in socket.fromfd(). * Added new modules mpz, md5 (by JH, requiring GNU MP 1.2). Affects Makefile and config.c. * socketmodule.c: added socket.fromfd(fd, family, type, [proto]), converted socket() to use of getargs().
1992-12-14 16:59:51 +00:00
/* XXX Always allocate one extra byte, since some malloc's return NULL
XXX for malloc(0) or realloc(p, 0). */
Only add 1 byte to all malloc calls when it is known that malloc(0) or realloc(p, 0) returns NULL. See changes to configure script to be checked in later.
1997-07-10 22:40:54 +00:00
#define _PyMem_EXTRA 1
#else
#define _PyMem_EXTRA 0
#endif
Vladimir Marangozov's long-awaited malloc restructuring. For more comments, read the patches@python.org archives. For documentation read the comments in mymalloc.h and objimpl.h. (This is not exactly what Vladimir posted to the patches list; I've made a few changes, and Vladimir sent me a fix in private email for a problem that only occurs in debug mode. I'm also holding back on his change to main.c, which seems unnecessary to me.)
2000-05-03 23:44:39 +00:00
/*
* Core memory allocator
* =====================
*/
* renamed malloc.h mymalloc.h, and added MALLARG as the type of the argument to malloc() (size_t or unsigned int) * listobject.c: check for overflow of the size of the object, so things like range(0x7fffffff) will raise MemoryError instead of calling malloc() with -4 (and then crashing -- malloc's fault)
1992-08-19 16:46:30 +00:00
Vladimir Marangozov's long-awaited malloc restructuring. For more comments, read the patches@python.org archives. For documentation read the comments in mymalloc.h and objimpl.h. (This is not exactly what Vladimir posted to the patches list; I've made a few changes, and Vladimir sent me a fix in private email for a problem that only occurs in debug mode. I'm also holding back on his change to main.c, which seems unnecessary to me.)
2000-05-03 23:44:39 +00:00
/* To make sure the interpreter is user-malloc friendly, all memory
APIs are implemented on top of this one.
Added Py_Malloc and friends as well as PyMem_Malloc and friends.
1997-08-05 01:59:22 +00:00
Vladimir Marangozov's long-awaited malloc restructuring. For more comments, read the patches@python.org archives. For documentation read the comments in mymalloc.h and objimpl.h. (This is not exactly what Vladimir posted to the patches list; I've made a few changes, and Vladimir sent me a fix in private email for a problem that only occurs in debug mode. I'm also holding back on his change to main.c, which seems unnecessary to me.)
2000-05-03 23:44:39 +00:00
The PyCore_* macros can be defined to make the interpreter use a
custom allocator. Note that they are for internal use only. Both
the core and extension modules should use the PyMem_* API. */
#ifndef PyCore_MALLOC_FUNC
#undef PyCore_REALLOC_FUNC
#undef PyCore_FREE_FUNC
#define PyCore_MALLOC_FUNC malloc
#define PyCore_REALLOC_FUNC realloc
#define PyCore_FREE_FUNC free
#endif
#ifndef PyCore_MALLOC_PROTO
#undef PyCore_REALLOC_PROTO
#undef PyCore_FREE_PROTO
#define PyCore_MALLOC_PROTO Py_PROTO((size_t))
#define PyCore_REALLOC_PROTO Py_PROTO((ANY *, size_t))
#define PyCore_FREE_PROTO Py_PROTO((ANY *))
#endif
#ifdef NEED_TO_DECLARE_MALLOC_AND_FRIEND
extern ANY *PyCore_MALLOC_FUNC PyCore_MALLOC_PROTO;
extern ANY *PyCore_REALLOC_FUNC PyCore_REALLOC_PROTO;
extern void PyCore_FREE_FUNC PyCore_FREE_PROTO;
#endif
#ifndef PyCore_MALLOC
#undef PyCore_REALLOC
#undef PyCore_FREE
#define PyCore_MALLOC(n) PyCore_MALLOC_FUNC(n)
#define PyCore_REALLOC(p, n) PyCore_REALLOC_FUNC((p), (n))
#define PyCore_FREE(p) PyCore_FREE_FUNC(p)
#endif
Added Py_Malloc and friends as well as PyMem_Malloc and friends.
1997-08-05 01:59:22 +00:00
Vladimir Marangozov's long-awaited malloc restructuring. For more comments, read the patches@python.org archives. For documentation read the comments in mymalloc.h and objimpl.h. (This is not exactly what Vladimir posted to the patches list; I've made a few changes, and Vladimir sent me a fix in private email for a problem that only occurs in debug mode. I'm also holding back on his change to main.c, which seems unnecessary to me.)
2000-05-03 23:44:39 +00:00
/* BEWARE:
Added Py_Malloc and friends as well as PyMem_Malloc and friends.
1997-08-05 01:59:22 +00:00
Vladimir Marangozov's long-awaited malloc restructuring. For more comments, read the patches@python.org archives. For documentation read the comments in mymalloc.h and objimpl.h. (This is not exactly what Vladimir posted to the patches list; I've made a few changes, and Vladimir sent me a fix in private email for a problem that only occurs in debug mode. I'm also holding back on his change to main.c, which seems unnecessary to me.)
2000-05-03 23:44:39 +00:00
Each interface exports both functions and macros. Extension modules
should normally use the functions for ensuring binary compatibility
of the user's code across Python versions. Subsequently, if the
Python runtime switches to its own malloc (different from standard
malloc), no recompilation is required for the extensions.
The macro versions trade compatibility for speed. They can be used
whenever there is a performance problem, but their use implies
recompilation of the code for each new Python release. The Python
core uses the macros because it *is* compiled on every upgrade.
This might not be the case with 3rd party extensions in a custom
setup (for example, a customer does not always have access to the
source of 3rd party deliverables). You have been warned! */
/*
* Raw memory interface
* ====================
*/
/* Functions */
/* Function wrappers around PyCore_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. Returned pointers must be checked for NULL explicitly.
No action is performed on failure. */
Add DL_IMPORT(returntype) for all officially exported functions.
1998-12-04 18:48:25 +00:00
extern DL_IMPORT(ANY *) PyMem_Malloc Py_PROTO((size_t));
extern DL_IMPORT(ANY *) PyMem_Realloc Py_PROTO((ANY *, size_t));
extern DL_IMPORT(void) PyMem_Free Py_PROTO((ANY *));
Added Py_Malloc and friends as well as PyMem_Malloc and friends.
1997-08-05 01:59:22 +00:00
Vladimir Marangozov's long-awaited malloc restructuring. For more comments, read the patches@python.org archives. For documentation read the comments in mymalloc.h and objimpl.h. (This is not exactly what Vladimir posted to the patches list; I've made a few changes, and Vladimir sent me a fix in private email for a problem that only occurs in debug mode. I'm also holding back on his change to main.c, which seems unnecessary to me.)
2000-05-03 23:44:39 +00:00
/* Starting from Python 1.6, the wrappers Py_{Malloc,Realloc,Free} are
no longer supported. They used to call PyErr_NoMemory() on failure. */
/* Macros */
#define PyMem_MALLOC(n) PyCore_MALLOC(n)
#define PyMem_REALLOC(p, n) PyCore_REALLOC((ANY *)(p), (n))
#define PyMem_FREE(p) PyCore_FREE((ANY *)(p))
/*
* Type-oriented memory interface
* ==============================
*/
/* Functions */
#define PyMem_New(type, n) \
( (type *) PyMem_Malloc((n) * sizeof(type)) )
#define PyMem_Resize(p, type, n) \
( (p) = (type *) PyMem_Realloc((n) * sizeof(type)) )
#define PyMem_Del(p) PyMem_Free(p)
/* Macros */
#define PyMem_NEW(type, n) \
( (type *) PyMem_MALLOC(_PyMem_EXTRA + (n) * sizeof(type)) )
#define PyMem_RESIZE(p, type, n) \
if ((p) == NULL) \
(p) = (type *)(PyMem_MALLOC( \
_PyMem_EXTRA + (n) * sizeof(type))); \
else \
(p) = (type *)(PyMem_REALLOC((p), \
_PyMem_EXTRA + (n) * sizeof(type)))
#define PyMem_DEL(p) PyMem_FREE(p)
/* PyMem_XDEL is deprecated. To avoid the call when p is NULL,
it is recommended to write the test explicitly in the code.
Note that according to ANSI C, free(NULL) has no effect. */
* Added support for X11 modules. * Makefile: change location of FORMS library. * posixmodule.c: turn #if 0 into #ifdef MSDOS (stuff in unistd.h or not) * Almost all .h files: added CPP magic to avoid duplicate inclusions and to support inclusion from C++.
1993-07-28 09:05:47 +00:00
#ifdef __cplusplus
}
#endif
The great renaming, phase two: all header files have been updated to use the new names exclusively, and the linker will see the new names. Files that import "Python.h" also only see the new names. Files that import "allobjects.h" will continue to be able to use the old names, due to the inclusion (in allobjects.h) of "rename2.h".
1995-01-12 11:45:45 +00:00
* Added support for X11 modules. * Makefile: change location of FORMS library. * posixmodule.c: turn #if 0 into #ifdef MSDOS (stuff in unistd.h or not) * Almost all .h files: added CPP magic to avoid duplicate inclusions and to support inclusion from C++.
1993-07-28 09:05:47 +00:00
#endif /* !Py_MYMALLOC_H */