You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
63 lines
2.6 KiB
63 lines
2.6 KiB
5 years ago
|
/* Copyright (C) 2002 Jean-Marc Valin
|
||
|
|
File: stack_alloc.h
|
||
|
|
|
||
|
|
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.
|
||
|
|
|
||
|
|
- Neither the name of the Xiph.org Foundation nor the names of its
|
||
|
|
contributors may be used to endorse or promote products derived from
|
||
|
|
this software without specific prior written permission.
|
||
|
|
|
||
|
|
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 FOUNDATION 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 0
|
||
|
|
|
||
|
|
/*Aligns the stack to a 'size' boundary */
|
||
|
|
#define ALIGN(stack, size) (stack=(void*)((((int)stack)+((size)-1)) & (-(size))))
|
||
|
|
/*Aligns the stack to a 'size' boundary minus k */
|
||
|
|
#define ALIGN_1(stack, size, k) (stack=(void*)(((((int)stack)+((size)-1+(k))) & (-(size)))-(k)))
|
||
|
|
|
||
|
|
/* Allocates 'size' elements of type 'type' on the stack */
|
||
|
|
#define PUSH(stack, size, type) (ALIGN(stack,sizeof(type)),stack=(void*)(((int)stack)+((size)*sizeof(type))),(type*)(((int)stack)-((size)*sizeof(type))))
|
||
|
|
|
||
|
|
|
||
|
|
#else
|
||
|
|
|
||
|
|
/*Aligns the stack to a 'size' boundary */
|
||
|
|
#define ALIGN(stack, size) ((stack) += ((size) - (int)(stack)) & ((size) - 1))
|
||
|
|
|
||
|
|
/* Allocates 'size' elements of type 'type' on the stack */
|
||
|
|
#define PUSH(stack, size, type) (ALIGN((stack),sizeof(type)),(stack)+=((size)*sizeof(type)),(type*)((stack)-((size)*sizeof(type))))
|
||
|
|
|
||
|
|
/* Allocates a struct stack */
|
||
|
|
#define PUSHS(stack, type) (ALIGN((stack),sizeof(long)),(stack)+=(sizeof(type)),(type*)((stack)-(sizeof(type))))
|
||
|
|
|
||
|
|
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif
|