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120800f8fa
C reserves identifiers of the from _[A-Z]+ and we have a number of those in the code. This patch renames the various function arguments, MACROS and preprocessor symbols to avoid the reserved form. It also removes the CHANNELS() macro altogether. This was a minor optimization for TI DSP to force a mono-only build, as were the associated local 'const' versions. Since stereo support is manditory, it wasn't worth keeping. Thanks to John Ridges for raising the issue, and Jean-Marc Valin and Greg Maxwell for reviewing the changes.
145 lines
4.5 KiB
C
145 lines
4.5 KiB
C
/* Copyright (C) 2002-2003 Jean-Marc Valin
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Copyright (C) 2007-2009 Xiph.Org Foundation */
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/**
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@file stack_alloc.h
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@brief Temporary memory allocation on stack
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*/
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/*
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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- Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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- Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
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CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef STACK_ALLOC_H
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#define STACK_ALLOC_H
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#ifdef USE_ALLOCA
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# ifdef WIN32
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# include <malloc.h>
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# else
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# ifdef HAVE_ALLOCA_H
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# include <alloca.h>
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# else
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# include <stdlib.h>
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# endif
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# endif
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#endif
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/**
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* @def ALIGN(stack, size)
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*
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* Aligns the stack to a 'size' boundary
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*
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* @param stack Stack
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* @param size New size boundary
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*/
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/**
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* @def PUSH(stack, size, type)
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*
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* Allocates 'size' elements of type 'type' on the stack
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*
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* @param stack Stack
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* @param size Number of elements
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* @param type Type of element
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*/
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/**
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* @def VARDECL(var)
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*
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* Declare variable on stack
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*
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* @param var Variable to declare
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*/
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/**
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* @def ALLOC(var, size, type)
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*
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* Allocate 'size' elements of 'type' on stack
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*
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* @param var Name of variable to allocate
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* @param size Number of elements
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* @param type Type of element
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*/
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#if defined(VAR_ARRAYS)
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#define VARDECL(type, var)
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#define ALLOC(var, size, type) type var[size]
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#define SAVE_STACK
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#define RESTORE_STACK
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#define ALLOC_STACK
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#elif defined(USE_ALLOCA)
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#define VARDECL(type, var) type *var
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# ifdef WIN32
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# define ALLOC(var, size, type) var = ((type*)_alloca(sizeof(type)*(size)))
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# else
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# define ALLOC(var, size, type) var = ((type*)alloca(sizeof(type)*(size)))
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# endif
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#define SAVE_STACK
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#define RESTORE_STACK
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#define ALLOC_STACK
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#else
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#ifdef CELT_C
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char *global_stack=0;
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#else
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extern char *global_stack;
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#endif /* CELT_C */
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#ifdef ENABLE_VALGRIND
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#include <valgrind/memcheck.h>
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#ifdef CELT_C
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char *global_stack_top=0;
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#else
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extern char *global_stack_top;
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#endif /* CELT_C */
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#define ALIGN(stack, size) ((stack) += ((size) - (long)(stack)) & ((size) - 1))
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#define PUSH(stack, size, type) (VALGRIND_MAKE_MEM_NOACCESS(stack, global_stack_top-stack),ALIGN((stack),sizeof(type)/sizeof(char)),VALGRIND_MAKE_MEM_UNDEFINED(stack, ((size)*sizeof(type)/sizeof(char))),(stack)+=(2*(size)*sizeof(type)/sizeof(char)),(type*)((stack)-(2*(size)*sizeof(type)/sizeof(char))))
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#define RESTORE_STACK ((global_stack = _saved_stack),VALGRIND_MAKE_MEM_NOACCESS(global_stack, global_stack_top-global_stack))
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#define ALLOC_STACK char *_saved_stack; ((global_stack = (global_stack==0) ? ((global_stack_top=opus_alloc_scratch(GLOBAL_STACK_SIZE*2)+(GLOBAL_STACK_SIZE*2))-(GLOBAL_STACK_SIZE*2)) : global_stack),VALGRIND_MAKE_MEM_NOACCESS(global_stack, global_stack_top-global_stack)); _saved_stack = global_stack;
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#else
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#define ALIGN(stack, size) ((stack) += ((size) - (long)(stack)) & ((size) - 1))
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#define PUSH(stack, size, type) (ALIGN((stack),sizeof(type)/sizeof(char)),(stack)+=(size)*(sizeof(type)/sizeof(char)),(type*)((stack)-(size)*(sizeof(type)/sizeof(char))))
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#define RESTORE_STACK (global_stack = _saved_stack)
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#define ALLOC_STACK char *_saved_stack; (global_stack = (global_stack==0) ? opus_alloc_scratch(GLOBAL_STACK_SIZE) : global_stack); _saved_stack = global_stack;
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#endif /* ENABLE_VALGRIND */
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#include "os_support.h"
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#define VARDECL(type, var) type *var
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#define ALLOC(var, size, type) var = PUSH(global_stack, size, type)
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#define SAVE_STACK char *_saved_stack = global_stack;
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#endif /* VAR_ARRAYS */
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#endif /* STACK_ALLOC_H */
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