+++ /dev/null
-/* $XConsortium: Xalloca.h /main/6 1996/09/28 16:17:22 rws $ */
-
-/*
-
-Copyright (c) 1995 X Consortium
-
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
-
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
-IN NO EVENT SHALL THE X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR
-OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
-ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
-OTHER DEALINGS IN THE SOFTWARE.
-
-Except as contained in this notice, the name of the X Consortium shall
-not be used in advertising or otherwise to promote the sale, use or
-other dealings in this Software without prior written authorization
-from the X Consortium.
-
-*/
-
-/*
- * The purpose of this header is to define the macros ALLOCATE_LOCAL and
- * DEALLOCATE_LOCAL appropriately for the platform being compiled on.
- * These macros are used to make fast, function-local memory allocations.
- * Their characteristics are as follows:
- *
- * void *ALLOCATE_LOCAL(int size)
- * Returns a pointer to size bytes of memory, or NULL if the allocation
- * failed. The memory must be freed with DEALLOCATE_LOCAL before the
- * function that made the allocation returns. You should not ask for
- * large blocks of memory with this function, since on many platforms
- * the memory comes from the stack, which may have limited size.
- *
- * void DEALLOCATE_LOCAL(void *)
- * Frees the memory allocated by ALLOCATE_LOCAL. Omission of this
- * step may be harmless on some platforms, but will result in
- * memory leaks or worse on others.
- *
- * Before including this file, you should define two macros,
- * ALLOCATE_LOCAL_FALLBACK and DEALLOCATE_LOCAL_FALLBACK, that have the
- * same characteristics as ALLOCATE_LOCAL and DEALLOCATE_LOCAL. The
- * header uses the fallbacks if it doesn't know a "better" way to define
- * ALLOCATE_LOCAL and DEALLOCATE_LOCAL. Typical usage would be:
- *
- * #define ALLOCATE_LOCAL_FALLBACK(_size) malloc(_size)
- * #define DEALLOCATE_LOCAL_FALLBACK(_ptr) free(_ptr)
- * #include "Xalloca.h"
- */
-
-#ifndef XALLOCA_H
-#define XALLOCA_H 1
-
-#ifdef INCLUDE_ALLOCA_H
-# include <alloca.h>
-#endif
-
-#ifndef NO_ALLOCA
-/*
- * os-dependent definition of local allocation and deallocation
- * If you want something other than (DE)ALLOCATE_LOCAL_FALLBACK
- * for ALLOCATE/DEALLOCATE_LOCAL then you add that in here.
- */
-# if defined(__HIGHC__)
-# ifndef NCR
- extern char *alloca();
-# if HCVERSION < 21003
-# define ALLOCATE_LOCAL(size) alloca((int)(size))
- pragma on(alloca);
-# else /* HCVERSION >= 21003 */
-# define ALLOCATE_LOCAL(size) _Alloca((int)(size))
-# endif /* HCVERSION < 21003 */
-# else /* NCR */
-# define ALLOCATE_LOCAL(size) alloca(size)
-# endif
-# define DEALLOCATE_LOCAL(ptr) /* as nothing */
-# endif /* defined(__HIGHC__) */
-
-
-# ifdef __GNUC__
-# ifndef alloca
-# define alloca __builtin_alloca
-# endif /* !alloca */
-# define ALLOCATE_LOCAL(size) alloca((int)(size))
-# define DEALLOCATE_LOCAL(ptr) /* as nothing */
-# else /* ! __GNUC__ */
-
-/*
- * warning: old mips alloca (pre 2.10) is unusable, new one is built in
- * Test is easy, the new one is named __builtin_alloca and comes
- * from alloca.h which #defines alloca.
- */
-# ifndef NCR
-# if defined(vax) || defined(sun) || defined(apollo) || defined(stellar) || defined(USL) || defined(alloca)
-/*
- * Some System V boxes extract alloca.o from /lib/libPW.a; if you
- * decide that you don't want to use alloca, you might want to fix it here.
- */
-/* alloca might be a macro taking one arg (hi, Sun!), so give it one. */
-# ifndef __sgi /* IRIX 5/6 has definition */
-# define __Xnullarg /* as nothing */
-# ifndef X_NOT_STDC_ENV
- extern void *alloca(__Xnullarg);
-# else
- extern char *alloca(__Xnullarg);
-# endif
-# endif /* __sgi */
-# define ALLOCATE_LOCAL(size) alloca((int)(size))
-# define DEALLOCATE_LOCAL(ptr) /* as nothing */
-# endif /* who does alloca */
-# endif /* NCR */
-# endif /* __GNUC__ */
-
-#endif /* NO_ALLOCA */
-
-#if !defined(ALLOCATE_LOCAL)
-# if defined(ALLOCATE_LOCAL_FALLBACK) && defined(DEALLOCATE_LOCAL_FALLBACK)
-# define ALLOCATE_LOCAL(_size) ALLOCATE_LOCAL_FALLBACK(_size)
-# define DEALLOCATE_LOCAL(_ptr) DEALLOCATE_LOCAL_FALLBACK(_ptr)
-# else /* no fallbacks supplied; error */
-# define ALLOCATE_LOCAL(_size) ALLOCATE_LOCAL_FALLBACK undefined!
-# define DEALLOCATE_LOCAL(_ptr) DEALLOCATE_LOCAL_FALLBACK undefined!
-# endif /* defined(ALLOCATE_LOCAL_FALLBACK && DEALLOCATE_LOCAL_FALLBACK) */
-#endif /* !defined(ALLOCATE_LOCAL) */
-
-#endif /* XALLOCA_H */
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