mirror of
https://github.com/vgmstream/vgmstream.git
synced 2024-12-29 23:03:04 +01:00
113 lines
3.0 KiB
C
113 lines
3.0 KiB
C
/* Copyright (C) 2002-2003 Jean-Marc Valin
|
|
Copyright (C) 2007-2009 Xiph.Org Foundation */
|
|
/**
|
|
@file stack_alloc.h
|
|
@brief Temporary memory allocation on stack
|
|
*/
|
|
/*
|
|
Redistribution and use in source and binary forms, with or without
|
|
modification, are permitted provided that the following conditions
|
|
are met:
|
|
|
|
- Redistributions of source code must retain the above copyright
|
|
notice, this list of conditions and the following disclaimer.
|
|
|
|
- Redistributions in binary form must reproduce the above copyright
|
|
notice, this list of conditions and the following disclaimer in the
|
|
documentation and/or other materials provided with the distribution.
|
|
|
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
|
|
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
|
|
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
|
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
|
|
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
|
|
#define STACK_ALLOC_H
|
|
|
|
#if (!defined (VAR_ARRAYS) && !defined (USE_ALLOCA))
|
|
#error "Vgmstream requires one of VAR_ARRAYS or USE_ALLOCA be defined to select the temporary allocation mode."
|
|
#endif
|
|
|
|
#ifdef USE_ALLOCA
|
|
# ifdef WIN32
|
|
# include <malloc.h>
|
|
# else
|
|
# ifdef HAVE_ALLOCA_H
|
|
# include <alloca.h>
|
|
# else
|
|
# include <stdlib.h>
|
|
# endif
|
|
# endif
|
|
#endif
|
|
|
|
/**
|
|
* @def ALIGN(stack, size)
|
|
*
|
|
* Aligns the stack to a 'size' boundary
|
|
*
|
|
* @param stack Stack
|
|
* @param size New size boundary
|
|
*/
|
|
|
|
/**
|
|
* @def PUSH(stack, size, type)
|
|
*
|
|
* Allocates 'size' elements of type 'type' on the stack
|
|
*
|
|
* @param stack Stack
|
|
* @param size Number of elements
|
|
* @param type Type of element
|
|
*/
|
|
|
|
/**
|
|
* @def VARDECL(var)
|
|
*
|
|
* Declare variable on stack
|
|
*
|
|
* @param var Variable to declare
|
|
*/
|
|
|
|
/**
|
|
* @def ALLOC(var, size, type)
|
|
*
|
|
* Allocate 'size' elements of 'type' on stack
|
|
*
|
|
* @param var Name of variable to allocate
|
|
* @param size Number of elements
|
|
* @param type Type of element
|
|
*/
|
|
|
|
#if defined(VAR_ARRAYS)
|
|
|
|
#define VARDECL(type, var)
|
|
#define ALLOC(var, size, type) type var[size]
|
|
#define SAVE_STACK
|
|
#define RESTORE_STACK
|
|
#define ALLOC_STACK
|
|
|
|
#elif defined(USE_ALLOCA)
|
|
|
|
#define VARDECL(type, var) type *var
|
|
|
|
# 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 */
|