293 lines
10 KiB
C
293 lines
10 KiB
C
/***************************************************************************/
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/* */
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/* ftmemory.h */
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/* */
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/* The FreeType memory management macros (specification). */
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/* */
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/* Copyright 1996-2001, 2002, 2004, 2005, 2006 by */
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/* David Turner, Robert Wilhelm, and Werner Lemberg */
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/* */
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/* This file is part of the FreeType project, and may only be used, */
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/* modified, and distributed under the terms of the FreeType project */
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/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
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/* this file you indicate that you have read the license and */
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/* understand and accept it fully. */
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/* */
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/***************************************************************************/
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#ifndef __FTMEMORY_H__
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#define __FTMEMORY_H__
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#include <ft2build.h>
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#include FT_CONFIG_CONFIG_H
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#include FT_TYPES_H
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FT_BEGIN_HEADER
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/*************************************************************************/
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/* */
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/* <Macro> */
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/* FT_SET_ERROR */
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/* */
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/* <Description> */
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/* This macro is used to set an implicit `error' variable to a given */
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/* expression's value (usually a function call), and convert it to a */
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/* boolean which is set whenever the value is != 0. */
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/* */
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#undef FT_SET_ERROR
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#define FT_SET_ERROR( expression ) \
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( ( error = (expression) ) != 0 )
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/*************************************************************************/
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/*************************************************************************/
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/*************************************************************************/
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/**** ****/
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/**** ****/
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/**** M E M O R Y ****/
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/**** ****/
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/**** ****/
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/*************************************************************************/
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/*************************************************************************/
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/*************************************************************************/
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#ifdef FT_DEBUG_MEMORY
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FT_BASE( const char* ) _ft_debug_file;
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FT_BASE( long ) _ft_debug_lineno;
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# define FT_DEBUG_INNER(exp) ( _ft_debug_file = __FILE__, _ft_debug_lineno = __LINE__, (exp) )
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#else /* !FT_DEBUG_MEMORY */
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# define FT_DEBUG_INNER(exp) (exp)
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#endif
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/*
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* The allocation functions return a pointer, and the error code
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* is written to through the `p_error' parameter. See below for
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* for documentation.
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*/
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FT_BASE( FT_Pointer )
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ft_mem_alloc( FT_Memory memory,
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FT_Long size,
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FT_Error *p_error );
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FT_BASE( FT_Pointer )
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ft_mem_qalloc( FT_Memory memory,
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FT_Long size,
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FT_Error *p_error );
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FT_BASE( FT_Pointer )
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ft_mem_realloc( FT_Memory memory,
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FT_Long item_size,
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FT_Long cur_count,
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FT_Long new_count,
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void* block,
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FT_Error *p_error );
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FT_BASE( FT_Pointer )
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ft_mem_qrealloc( FT_Memory memory,
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FT_Long item_size,
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FT_Long cur_count,
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FT_Long new_count,
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void* block,
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FT_Error *p_error );
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FT_BASE( void )
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ft_mem_free( FT_Memory memory,
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const void* P );
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#define FT_MEM_ALLOC(ptr,size) \
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FT_DEBUG_INNER( (ptr) = ft_mem_alloc( memory, (size), &error ) )
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#define FT_MEM_FREE(ptr) \
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FT_BEGIN_STMNT \
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ft_mem_free( memory, (ptr) ); \
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(ptr) = NULL; \
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FT_END_STMNT
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#define FT_MEM_NEW(ptr) \
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FT_MEM_ALLOC( ptr, sizeof(*(ptr)) )
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#define FT_MEM_REALLOC( ptr, cur, new ) \
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FT_DEBUG_INNER( (ptr) = ft_mem_realloc( memory, 1, (cur), (new), (ptr), &error ) )
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#define FT_MEM_QALLOC(ptr,size) \
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FT_DEBUG_INNER( (ptr) = ft_mem_qalloc( memory, (size), &error ) )
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#define FT_MEM_QNEW(ptr) \
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FT_MEM_QALLOC( ptr, sizeof(*(ptr)) )
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#define FT_MEM_QREALLOC( ptr, cur, new ) \
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FT_DEBUG_INNER( (ptr) = ft_mem_qrealloc( memory, 1, (cur), (new), (ptr), &error ) )
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#define FT_MEM_QRENEW_ARRAY(ptr,cur,new) \
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FT_DEBUG_INNER( (ptr) = ft_mem_qrealloc( memory, sizeof(*(ptr)), (cur), (new), (ptr), &error ) )
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#define FT_MEM_ALLOC_MULT(ptr,count,item_size) \
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FT_DEBUG_INNER( (ptr) = ft_mem_realloc( memory, (item_size), 0, (count), NULL, &error ) )
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#define FT_MEM_REALLOC_MULT(ptr,oldcnt,newcnt,itmsz) \
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FT_DEBUG_INNER( (ptr) = ft_mem_realloc( memory, (itmsz), (oldcnt), (newcnt), (ptr), &error ) )
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#define FT_MEM_QALLOC_MULT(ptr,count,item_size) \
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FT_DEBUG_INNER( (ptr) = ft_mem_qrealloc( memory, (item_size), 0, (count), NULL, &error ) )
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#define FT_MEM_QREALLOC_MULT(ptr,oldcnt,newcnt,itmsz) \
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FT_DEBUG_INNER( (ptr) = ft_mem_qrealloc( memory, (itmsz), (oldcnt), (newcnt), (ptr), &error ) )
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#define FT_MEM_SET_ERROR( cond ) ( (cond), error != 0 )
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#define FT_ALLOC(ptr,size) FT_MEM_SET_ERROR( FT_MEM_ALLOC(ptr,size) )
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#define FT_MEM_SET( dest, byte, count ) ft_memset( dest, byte, count )
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#define FT_MEM_COPY( dest, source, count ) ft_memcpy( dest, source, count )
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#define FT_MEM_MOVE( dest, source, count ) ft_memmove( dest, source, count )
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#define FT_MEM_ZERO( dest, count ) FT_MEM_SET( dest, 0, count )
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#define FT_ZERO( p ) FT_MEM_ZERO( p, sizeof ( *(p) ) )
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#define FT_ARRAY_ZERO( dest, count ) \
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FT_MEM_ZERO( dest, (count) * sizeof ( *(dest) ) )
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#define FT_ARRAY_COPY( dest, source, count ) \
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FT_MEM_COPY( dest, source, (count) * sizeof ( *(dest) ) )
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#define FT_ARRAY_MOVE( dest, source, count ) \
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FT_MEM_MOVE( dest, source, (count) * sizeof ( *(dest) ) )
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/*
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* Return the maximum number of adressable elements in an array.
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* We limit ourselves to INT_MAX, rather than UINT_MAX, to avoid
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* any problems.
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*/
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#define FT_ARRAY_MAX( ptr ) ( FT_INT_MAX / sizeof ( *(ptr) ) )
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#define FT_ARRAY_CHECK( ptr, count ) ( (count) <= FT_ARRAY_MAX( ptr ) )
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/*************************************************************************/
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/* */
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/* The following functions macros expect that their pointer argument is */
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/* _typed_ in order to automatically compute array element sizes. */
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/* */
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#define FT_MEM_NEW_ARRAY(ptr,count) \
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FT_DEBUG_INNER( (ptr) = ft_mem_realloc( memory, sizeof(*(ptr)), 0, (count), NULL, &error ) )
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#define FT_MEM_RENEW_ARRAY(ptr,cur,new) \
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FT_DEBUG_INNER( (ptr) = ft_mem_realloc( memory, sizeof(*(ptr)), (cur), (new), (ptr), &error ) )
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#define FT_MEM_QNEW_ARRAY(ptr,count) \
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FT_DEBUG_INNER( (ptr) = ft_mem_qrealloc( memory, sizeof(*(ptr)), 0, (count), NULL, &error ) )
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#define FT_MEM_QRENEW_ARRAY(ptr,cur,new) \
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FT_DEBUG_INNER( (ptr) = ft_mem_qrealloc( memory, sizeof(*(ptr)), (cur), (new), (ptr), &error ) )
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#define FT_ALLOC(ptr,size) \
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FT_MEM_SET_ERROR( FT_MEM_ALLOC(ptr,size) )
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#define FT_REALLOC(ptr,cursz,newsz) \
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FT_MEM_SET_ERROR( FT_MEM_REALLOC(ptr,cursz,newsz) )
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#define FT_ALLOC_MULT(ptr,count,item_size) \
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FT_MEM_SET_ERROR( FT_MEM_ALLOC_MULT(ptr,count,item_size) )
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#define FT_REALLOC_MULT(ptr,oldcnt,newcnt,itmsz) \
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FT_MEM_SET_ERROR( FT_MEM_REALLOC_MULT(ptr,oldcnt,newcnt,itmsz) )
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#define FT_QALLOC(ptr,size) \
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FT_MEM_SET_ERROR( FT_MEM_QALLOC(ptr,size) )
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#define FT_QREALLOC(ptr,cursz,newsz) \
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FT_MEM_SET_ERROR( FT_MEM_QREALLOC(ptr,cursz,newsz) )
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#define FT_QALLOC_MULT(ptr,count,item_size) \
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FT_MEM_SET_ERROR( FT_MEM_QALLOC_MULT(ptr,count,item_size) )
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#define FT_QREALLOC_MULT(ptr,oldcnt,newcnt,itmsz) \
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FT_MEM_SET_ERROR( FT_MEM_QREALLOC_MULT(ptr,oldcnt,newcnt,itmsz) )
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#define FT_FREE(ptr) FT_MEM_FREE( ptr )
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#define FT_NEW(ptr) \
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FT_MEM_SET_ERROR( FT_MEM_NEW(ptr) )
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#define FT_NEW_ARRAY(ptr,count) \
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FT_MEM_SET_ERROR( FT_MEM_NEW_ARRAY(ptr,count) )
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#define FT_RENEW_ARRAY(ptr,curcnt,newcnt) \
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FT_MEM_SET_ERROR( FT_MEM_RENEW_ARRAY(ptr,curcnt,newcnt) )
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#define FT_QNEW(ptr) \
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FT_MEM_SET_ERROR( FT_MEM_QNEW(ptr) )
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#define FT_QNEW_ARRAY(ptr,count) \
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FT_MEM_SET_ERROR( FT_MEM_NEW_ARRAY(ptr,count) )
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#define FT_QRENEW_ARRAY(ptr,curcnt,newcnt) \
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FT_MEM_SET_ERROR( FT_MEM_RENEW_ARRAY(ptr,curcnt,newcnt) )
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#ifdef FT_CONFIG_OPTION_OLD_INTERNALS
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FT_BASE( FT_Error )
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FT_Alloc( FT_Memory memory,
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FT_Long size,
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void* *P );
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FT_BASE( FT_Error )
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FT_QAlloc( FT_Memory memory,
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FT_Long size,
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void* *p );
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FT_BASE( FT_Error )
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FT_Realloc( FT_Memory memory,
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FT_Long current,
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FT_Long size,
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void* *P );
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FT_BASE( FT_Error )
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FT_QRealloc( FT_Memory memory,
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FT_Long current,
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FT_Long size,
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void* *p );
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FT_BASE( void )
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FT_Free( FT_Memory memory,
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void* *P );
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#endif /* FT_CONFIG_OPTION_OLD_INTERNALS */
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/* */
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FT_END_HEADER
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#endif /* __FTMEMORY_H__ */
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/* END */
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