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Updated stack_alloc.h

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Chris Moeller 2015-01-21 18:03:06 -08:00
parent a4f8a09541
commit 2cafa1a676
1 changed files with 60 additions and 61 deletions
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src/stack_alloc.h
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@ -1,47 +1,50 @@
/* Copyright (C) 2002 Jean-Marc Valin */ /* Copyright (C) 2002-2003 Jean-Marc Valin
Copyright (C) 2007-2009 Xiph.Org Foundation */
/** /**
@file stack_alloc.h @file stack_alloc.h
@brief Temporary memory allocation on stack @brief Temporary memory allocation on stack
*/ */
/* /*
Redistribution and use in source and binary forms, with or without Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions modification, are permitted provided that the following conditions
are met: are met:
- Redistributions of source code must retain the above copyright - Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer. notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright - Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution. documentation and/or other materials provided with the distribution.
- Neither the name of the Xiph.org Foundation nor the names of its THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
contributors may be used to endorse or promote products derived from ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
this software without specific prior written permission. LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF */
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef STACK_ALLOC_H #ifndef STACK_ALLOC_H
#define STACK_ALLOC_H #define STACK_ALLOC_H
#ifdef WIN32 #if (!defined (VAR_ARRAYS) && !defined (USE_ALLOCA))
# include <malloc.h> #error "Vgmstream requires one of VAR_ARRAYS or USE_ALLOCA be defined to select the temporary allocation mode."
#else #endif
# ifdef HAVE_ALLOCA_H
# include <alloca.h> #ifdef USE_ALLOCA
# ifdef WIN32
# include <malloc.h>
# else # else
# include <stdlib.h> # ifdef HAVE_ALLOCA_H
# include <alloca.h>
# else
# include <stdlib.h>
# endif
# endif # endif
#endif #endif
@ -82,32 +85,28 @@
* @param type Type of element * @param type Type of element
*/ */
#ifdef ENABLE_VALGRIND
#include <valgrind/memcheck.h>
#define ALIGN(stack, size) ((stack) += ((size) - (long)(stack)) & ((size) - 1))
#define PUSH(stack, size, type) (VALGRIND_MAKE_NOACCESS(stack, 1000),ALIGN((stack),sizeof(type)),VALGRIND_MAKE_WRITABLE(stack, ((size)*sizeof(type))),(stack)+=((size)*sizeof(type)),(type*)((stack)-((size)*sizeof(type))))
#else
#define ALIGN(stack, size) ((stack) += ((size) - (long)(stack)) & ((size) - 1))
#define PUSH(stack, size, type) (ALIGN((stack),sizeof(type)),(stack)+=((size)*sizeof(type)),(type*)((stack)-((size)*sizeof(type))))
#endif
#if defined(VAR_ARRAYS) #if defined(VAR_ARRAYS)
#define VARDECL(var)
#define VARDECL(type, var)
#define ALLOC(var, size, type) type var[size] #define ALLOC(var, size, type) type var[size]
#define SAVE_STACK
#define RESTORE_STACK
#define ALLOC_STACK
#elif defined(USE_ALLOCA) #elif defined(USE_ALLOCA)
#define VARDECL(var) var
#define ALLOC(var, size, type) var = alloca(sizeof(type)*(size))
#else
#define VARDECL(var) var
#define ALLOC(var, size, type) var = PUSH(stack, size, type)
#endif
#define VARDECL(type, var) type *var
#endif # ifdef WIN32
# define ALLOC(var, size, type) var = ((type*)_alloca(sizeof(type)*(size)))
# else
# define ALLOC(var, size, type) var = ((type*)alloca(sizeof(type)*(size)))
# endif
#define SAVE_STACK
#define RESTORE_STACK
#define ALLOC_STACK
#endif /* VAR_ARRAYS */
#endif /* STACK_ALLOC_H */