+++ /dev/null
-/***************************************************************************/
-/* */
-/* ftmemory.h */
-/* */
-/* The FreeType memory management macros (specification). */
-/* */
-/* Copyright 1996-2001 by */
-/* David Turner, Robert Wilhelm, and Werner Lemberg */
-/* */
-/* This file is part of the FreeType project, and may only be used, */
-/* modified, and distributed under the terms of the FreeType project */
-/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
-/* this file you indicate that you have read the license and */
-/* understand and accept it fully. */
-/* */
-/***************************************************************************/
-
-
-#ifndef __FTMEMORY_H__
-#define __FTMEMORY_H__
-
-
-#include <ft2build.h>
-#include FT_CONFIG_CONFIG_H
-#include FT_TYPES_H
-
-
-FT_BEGIN_HEADER
-
-
- /*************************************************************************/
- /* */
- /* <Macro> */
- /* FT_SET_ERROR */
- /* */
- /* <Description> */
- /* This macro is used to set an implicit `error' variable to a given */
- /* expression's value (usually a function call), and convert it to a */
- /* boolean which is set whenever the value is != 0. */
- /* */
-#undef FT_SET_ERROR
-#define FT_SET_ERROR( expression ) \
- ( ( error = (expression) ) != 0 )
-
-
- /*************************************************************************/
- /*************************************************************************/
- /*************************************************************************/
- /**** ****/
- /**** ****/
- /**** M E M O R Y ****/
- /**** ****/
- /**** ****/
- /*************************************************************************/
- /*************************************************************************/
- /*************************************************************************/
-
-
- /*************************************************************************/
- /* */
- /* <Function> */
- /* FT_Alloc */
- /* */
- /* <Description> */
- /* Allocates a new block of memory. The returned area is always */
- /* zero-filled; this is a strong convention in many FreeType parts. */
- /* */
- /* <Input> */
- /* memory :: A handle to a given `memory object' which handles */
- /* allocation. */
- /* */
- /* size :: The size in bytes of the block to allocate. */
- /* */
- /* <Output> */
- /* P :: A pointer to the fresh new block. It should be set to */
- /* NULL if `size' is 0, or in case of error. */
- /* */
- /* <Return> */
- /* FreeType error code. 0 means success. */
- /* */
- FT_BASE( FT_Error )
- FT_Alloc( FT_Memory memory,
- FT_Long size,
- void* *P );
-
-
- /*************************************************************************/
- /* */
- /* <Function> */
- /* FT_Realloc */
- /* */
- /* <Description> */
- /* Reallocates a block of memory pointed to by `*P' to `Size' bytes */
- /* from the heap, possibly changing `*P'. */
- /* */
- /* <Input> */
- /* memory :: A handle to a given `memory object' which handles */
- /* reallocation. */
- /* */
- /* current :: The current block size in bytes. */
- /* */
- /* size :: The new block size in bytes. */
- /* */
- /* <InOut> */
- /* P :: A pointer to the fresh new block. It should be set to */
- /* NULL if `size' is 0, or in case of error. */
- /* */
- /* <Return> */
- /* FreeType error code. 0 means success. */
- /* */
- /* <Note> */
- /* All callers of FT_Realloc() _must_ provide the current block size */
- /* as well as the new one. */
- /* */
- FT_BASE( FT_Error )
- FT_Realloc( FT_Memory memory,
- FT_Long current,
- FT_Long size,
- void** P );
-
-
- /*************************************************************************/
- /* */
- /* <Function> */
- /* FT_Free */
- /* */
- /* <Description> */
- /* Releases a given block of memory allocated through FT_Alloc(). */
- /* */
- /* <Input> */
- /* memory :: A handle to a given `memory object' which handles */
- /* memory deallocation */
- /* */
- /* P :: This is the _address_ of a _pointer_ which points to the */
- /* allocated block. It is always set to NULL on exit. */
- /* */
- /* <Return> */
- /* FreeType error code. 0 means success. */
- /* */
- /* <Note> */
- /* If P or *P are NULL, this function should return successfully. */
- /* This is a strong convention within all of FreeType and its */
- /* drivers. */
- /* */
- FT_BASE( void )
- FT_Free( FT_Memory memory,
- void** P );
-
-
-
- /* This `#include' is needed by the MEM_xxx() macros; it should be */
- /* available on all platforms we know of. */
-#include <string.h>
-
-#define MEM_Set( dest, byte, count ) memset( dest, byte, count )
-
-#define MEM_Copy( dest, source, count ) memcpy( dest, source, count )
-
-#define MEM_Move( dest, source, count ) memmove( dest, source, count )
-
-
- /*************************************************************************/
- /* */
- /* We now support closures to produce completely reentrant code. This */
- /* means the allocation functions now takes an additional argument */
- /* (`memory'). It is a handle to a given memory object, responsible for */
- /* all low-level operations, including memory management and */
- /* synchronisation. */
- /* */
- /* In order to keep our code readable and use the same macros in the */
- /* font drivers and the rest of the library, MEM_Alloc(), ALLOC(), and */
- /* ALLOC_ARRAY() now use an implicit variable, `memory'. It must be */
- /* defined at all locations where a memory operation is queried. */
- /* */
-#define MEM_Alloc( _pointer_, _size_ ) \
- FT_Alloc( memory, _size_, (void**)&(_pointer_) )
-
-#define MEM_Alloc_Array( _pointer_, _count_, _type_ ) \
- FT_Alloc( memory, (_count_)*sizeof ( _type_ ), \
- (void**)&(_pointer_) )
-
-#define MEM_Realloc( _pointer_, _current_, _size_ ) \
- FT_Realloc( memory, _current_, _size_, (void**)&(_pointer_) )
-
-#define MEM_Realloc_Array( _pointer_, _current_, _new_, _type_ ) \
- FT_Realloc( memory, (_current_)*sizeof ( _type_ ), \
- (_new_)*sizeof ( _type_ ), (void**)&(_pointer_) )
-
-#define ALLOC( _pointer_, _size_ ) \
- FT_SET_ERROR( MEM_Alloc( _pointer_, _size_ ) )
-
-#define REALLOC( _pointer_, _current_, _size_ ) \
- FT_SET_ERROR( MEM_Realloc( _pointer_, _current_, _size_ ) )
-
-#define ALLOC_ARRAY( _pointer_, _count_, _type_ ) \
- FT_SET_ERROR( MEM_Alloc( _pointer_, \
- (_count_)*sizeof ( _type_ ) ) )
-
-#define REALLOC_ARRAY( _pointer_, _current_, _count_, _type_ ) \
- FT_SET_ERROR( MEM_Realloc( _pointer_, \
- (_current_)*sizeof ( _type_ ), \
- (_count_)*sizeof ( _type_ ) ) )
-
-#define FREE( _pointer_ ) FT_Free( memory, (void**)&(_pointer_) )
-
-
-FT_END_HEADER
-
-#endif /* __FTMEMORY_H__ */
-
-
-/* END */
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