369 lines
14 KiB
C
369 lines
14 KiB
C
/***************************************************************************/
|
|
/* */
|
|
/* ftmemory.h */
|
|
/* */
|
|
/* The FreeType memory management macros (specification). */
|
|
/* */
|
|
/* Copyright 1996-2001, 2002, 2004, 2005, 2006, 2007 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 ****/
|
|
/**** ****/
|
|
/**** ****/
|
|
/*************************************************************************/
|
|
/*************************************************************************/
|
|
/*************************************************************************/
|
|
|
|
|
|
/*
|
|
* C++ refuses to handle statements like p = (void*)anything; where `p'
|
|
* is a typed pointer. Since we don't have a `typeof' operator in
|
|
* standard C++, we have to use ugly casts.
|
|
*/
|
|
|
|
#ifdef __cplusplus
|
|
#define FT_ASSIGNP( p, val ) *((void**)&(p)) = (val)
|
|
#else
|
|
#define FT_ASSIGNP( p, val ) (p) = (val)
|
|
#endif
|
|
|
|
|
|
|
|
#ifdef FT_DEBUG_MEMORY
|
|
|
|
FT_BASE( const char* ) _ft_debug_file;
|
|
FT_BASE( long ) _ft_debug_lineno;
|
|
|
|
#define FT_DEBUG_INNER( exp ) ( _ft_debug_file = __FILE__, \
|
|
_ft_debug_lineno = __LINE__, \
|
|
(exp) )
|
|
|
|
#define FT_ASSIGNP_INNER( p, exp ) ( _ft_debug_file = __FILE__, \
|
|
_ft_debug_lineno = __LINE__, \
|
|
FT_ASSIGNP( p, exp ) )
|
|
|
|
#else /* !FT_DEBUG_MEMORY */
|
|
|
|
#define FT_DEBUG_INNER( exp ) (exp)
|
|
#define FT_ASSIGNP_INNER( p, exp ) FT_ASSIGNP( p, exp )
|
|
|
|
#endif /* !FT_DEBUG_MEMORY */
|
|
|
|
|
|
/*
|
|
* The allocation functions return a pointer, and the error code
|
|
* is written to through the `p_error' parameter. See below for
|
|
* for documentation.
|
|
*/
|
|
|
|
FT_BASE( FT_Pointer )
|
|
ft_mem_alloc( FT_Memory memory,
|
|
FT_Long size,
|
|
FT_Error *p_error );
|
|
|
|
FT_BASE( FT_Pointer )
|
|
ft_mem_qalloc( FT_Memory memory,
|
|
FT_Long size,
|
|
FT_Error *p_error );
|
|
|
|
FT_BASE( FT_Pointer )
|
|
ft_mem_realloc( FT_Memory memory,
|
|
FT_Long item_size,
|
|
FT_Long cur_count,
|
|
FT_Long new_count,
|
|
void* block,
|
|
FT_Error *p_error );
|
|
|
|
FT_BASE( FT_Pointer )
|
|
ft_mem_qrealloc( FT_Memory memory,
|
|
FT_Long item_size,
|
|
FT_Long cur_count,
|
|
FT_Long new_count,
|
|
void* block,
|
|
FT_Error *p_error );
|
|
|
|
FT_BASE( void )
|
|
ft_mem_free( FT_Memory memory,
|
|
const void* P );
|
|
|
|
|
|
#define FT_MEM_ALLOC( ptr, size ) \
|
|
FT_ASSIGNP_INNER( ptr, ft_mem_alloc( memory, (size), &error ) )
|
|
|
|
#define FT_MEM_FREE( ptr ) \
|
|
FT_BEGIN_STMNT \
|
|
ft_mem_free( memory, (ptr) ); \
|
|
(ptr) = NULL; \
|
|
FT_END_STMNT
|
|
|
|
#define FT_MEM_NEW( ptr ) \
|
|
FT_MEM_ALLOC( ptr, sizeof ( *(ptr) ) )
|
|
|
|
#define FT_MEM_REALLOC( ptr, cursz, newsz ) \
|
|
FT_ASSIGNP_INNER( ptr, ft_mem_realloc( memory, 1, \
|
|
(cursz), (newsz), \
|
|
(ptr), &error ) )
|
|
|
|
#define FT_MEM_QALLOC( ptr, size ) \
|
|
FT_ASSIGNP_INNER( ptr, ft_mem_qalloc( memory, (size), &error ) )
|
|
|
|
#define FT_MEM_QNEW( ptr ) \
|
|
FT_MEM_QALLOC( ptr, sizeof ( *(ptr) ) )
|
|
|
|
#define FT_MEM_QREALLOC( ptr, cursz, newsz ) \
|
|
FT_ASSIGNP_INNER( ptr, ft_mem_qrealloc( memory, 1, \
|
|
(cursz), (newsz), \
|
|
(ptr), &error ) )
|
|
|
|
#define FT_MEM_QRENEW_ARRAY( ptr, cursz, newsz ) \
|
|
FT_ASSIGNP_INNER( ptr, ft_mem_qrealloc( memory, sizeof ( *(ptr) ), \
|
|
(cursz), (newsz), \
|
|
(ptr), &error ) )
|
|
|
|
#define FT_MEM_ALLOC_MULT( ptr, count, item_size ) \
|
|
FT_ASSIGNP_INNER( ptr, ft_mem_realloc( memory, (item_size), \
|
|
0, (count), \
|
|
NULL, &error ) )
|
|
|
|
#define FT_MEM_REALLOC_MULT( ptr, oldcnt, newcnt, itmsz ) \
|
|
FT_ASSIGNP_INNER( ptr, ft_mem_realloc( memory, (itmsz), \
|
|
(oldcnt), (newcnt), \
|
|
(ptr), &error ) )
|
|
|
|
#define FT_MEM_QALLOC_MULT( ptr, count, item_size ) \
|
|
FT_ASSIGNP_INNER( ptr, ft_mem_qrealloc( memory, (item_size), \
|
|
0, (count), \
|
|
NULL, &error ) )
|
|
|
|
#define FT_MEM_QREALLOC_MULT( ptr, oldcnt, newcnt, itmsz) \
|
|
FT_ASSIGNP_INNER( ptr, ft_mem_qrealloc( memory, (itmsz), \
|
|
(oldcnt), (newcnt), \
|
|
(ptr), &error ) )
|
|
|
|
|
|
#define FT_MEM_SET_ERROR( cond ) ( (cond), error != 0 )
|
|
|
|
|
|
#define FT_MEM_SET( dest, byte, count ) ft_memset( dest, byte, count )
|
|
|
|
#define FT_MEM_COPY( dest, source, count ) ft_memcpy( dest, source, count )
|
|
|
|
#define FT_MEM_MOVE( dest, source, count ) ft_memmove( dest, source, count )
|
|
|
|
|
|
#define FT_MEM_ZERO( dest, count ) FT_MEM_SET( dest, 0, count )
|
|
|
|
#define FT_ZERO( p ) FT_MEM_ZERO( p, sizeof ( *(p) ) )
|
|
|
|
|
|
#define FT_ARRAY_ZERO( dest, count ) \
|
|
FT_MEM_ZERO( dest, (count) * sizeof ( *(dest) ) )
|
|
|
|
#define FT_ARRAY_COPY( dest, source, count ) \
|
|
FT_MEM_COPY( dest, source, (count) * sizeof ( *(dest) ) )
|
|
|
|
#define FT_ARRAY_MOVE( dest, source, count ) \
|
|
FT_MEM_MOVE( dest, source, (count) * sizeof ( *(dest) ) )
|
|
|
|
|
|
/*
|
|
* Return the maximum number of addressable elements in an array.
|
|
* We limit ourselves to INT_MAX, rather than UINT_MAX, to avoid
|
|
* any problems.
|
|
*/
|
|
#define FT_ARRAY_MAX( ptr ) ( FT_INT_MAX / sizeof ( *(ptr) ) )
|
|
|
|
#define FT_ARRAY_CHECK( ptr, count ) ( (count) <= FT_ARRAY_MAX( ptr ) )
|
|
|
|
|
|
/*************************************************************************/
|
|
/* */
|
|
/* The following functions macros expect that their pointer argument is */
|
|
/* _typed_ in order to automatically compute array element sizes. */
|
|
/* */
|
|
|
|
#define FT_MEM_NEW_ARRAY( ptr, count ) \
|
|
FT_ASSIGNP_INNER( ptr, ft_mem_realloc( memory, sizeof ( *(ptr) ), \
|
|
0, (count), \
|
|
NULL, &error ) )
|
|
|
|
#define FT_MEM_RENEW_ARRAY( ptr, cursz, newsz ) \
|
|
FT_ASSIGNP_INNER( ptr, ft_mem_realloc( memory, sizeof ( *(ptr) ), \
|
|
(cursz), (newsz), \
|
|
(ptr), &error ) )
|
|
|
|
#define FT_MEM_QNEW_ARRAY( ptr, count ) \
|
|
FT_ASSIGNP_INNER( ptr, ft_mem_qrealloc( memory, sizeof ( *(ptr) ), \
|
|
0, (count), \
|
|
NULL, &error ) )
|
|
|
|
#define FT_MEM_QRENEW_ARRAY( ptr, cursz, newsz ) \
|
|
FT_ASSIGNP_INNER( ptr, ft_mem_qrealloc( memory, sizeof ( *(ptr) ), \
|
|
(cursz), (newsz), \
|
|
(ptr), &error ) )
|
|
|
|
|
|
#define FT_ALLOC( ptr, size ) \
|
|
FT_MEM_SET_ERROR( FT_MEM_ALLOC( ptr, size ) )
|
|
|
|
#define FT_REALLOC( ptr, cursz, newsz ) \
|
|
FT_MEM_SET_ERROR( FT_MEM_REALLOC( ptr, cursz, newsz ) )
|
|
|
|
#define FT_ALLOC_MULT( ptr, count, item_size ) \
|
|
FT_MEM_SET_ERROR( FT_MEM_ALLOC_MULT( ptr, count, item_size ) )
|
|
|
|
#define FT_REALLOC_MULT( ptr, oldcnt, newcnt, itmsz ) \
|
|
FT_MEM_SET_ERROR( FT_MEM_REALLOC_MULT( ptr, oldcnt, \
|
|
newcnt, itmsz ) )
|
|
|
|
#define FT_QALLOC( ptr, size ) \
|
|
FT_MEM_SET_ERROR( FT_MEM_QALLOC( ptr, size ) )
|
|
|
|
#define FT_QREALLOC( ptr, cursz, newsz ) \
|
|
FT_MEM_SET_ERROR( FT_MEM_QREALLOC( ptr, cursz, newsz ) )
|
|
|
|
#define FT_QALLOC_MULT( ptr, count, item_size ) \
|
|
FT_MEM_SET_ERROR( FT_MEM_QALLOC_MULT( ptr, count, item_size ) )
|
|
|
|
#define FT_QREALLOC_MULT( ptr, oldcnt, newcnt, itmsz ) \
|
|
FT_MEM_SET_ERROR( FT_MEM_QREALLOC_MULT( ptr, oldcnt, \
|
|
newcnt, itmsz ) )
|
|
|
|
#define FT_FREE( ptr ) FT_MEM_FREE( ptr )
|
|
|
|
#define FT_NEW( ptr ) FT_MEM_SET_ERROR( FT_MEM_NEW( ptr ) )
|
|
|
|
#define FT_NEW_ARRAY( ptr, count ) \
|
|
FT_MEM_SET_ERROR( FT_MEM_NEW_ARRAY( ptr, count ) )
|
|
|
|
#define FT_RENEW_ARRAY( ptr, curcnt, newcnt ) \
|
|
FT_MEM_SET_ERROR( FT_MEM_RENEW_ARRAY( ptr, curcnt, newcnt ) )
|
|
|
|
#define FT_QNEW( ptr ) \
|
|
FT_MEM_SET_ERROR( FT_MEM_QNEW( ptr ) )
|
|
|
|
#define FT_QNEW_ARRAY( ptr, count ) \
|
|
FT_MEM_SET_ERROR( FT_MEM_NEW_ARRAY( ptr, count ) )
|
|
|
|
#define FT_QRENEW_ARRAY( ptr, curcnt, newcnt ) \
|
|
FT_MEM_SET_ERROR( FT_MEM_RENEW_ARRAY( ptr, curcnt, newcnt ) )
|
|
|
|
|
|
#ifdef FT_CONFIG_OPTION_OLD_INTERNALS
|
|
|
|
FT_BASE( FT_Error )
|
|
FT_Alloc( FT_Memory memory,
|
|
FT_Long size,
|
|
void* *P );
|
|
|
|
FT_BASE( FT_Error )
|
|
FT_QAlloc( FT_Memory memory,
|
|
FT_Long size,
|
|
void* *p );
|
|
|
|
FT_BASE( FT_Error )
|
|
FT_Realloc( FT_Memory memory,
|
|
FT_Long current,
|
|
FT_Long size,
|
|
void* *P );
|
|
|
|
FT_BASE( FT_Error )
|
|
FT_QRealloc( FT_Memory memory,
|
|
FT_Long current,
|
|
FT_Long size,
|
|
void* *p );
|
|
|
|
FT_BASE( void )
|
|
FT_Free( FT_Memory memory,
|
|
void* *P );
|
|
|
|
#endif /* FT_CONFIG_OPTION_OLD_INTERNALS */
|
|
|
|
|
|
FT_BASE( FT_Pointer )
|
|
ft_mem_strdup( FT_Memory memory,
|
|
const char* str,
|
|
FT_Error *p_error );
|
|
|
|
FT_BASE( FT_Pointer )
|
|
ft_mem_dup( FT_Memory memory,
|
|
const void* address,
|
|
FT_ULong size,
|
|
FT_Error *p_error );
|
|
|
|
#define FT_MEM_STRDUP( dst, str ) \
|
|
(dst) = (char*)ft_mem_strdup( memory, (const char*)(str), &error )
|
|
|
|
#define FT_STRDUP( dst, str ) \
|
|
FT_MEM_SET_ERROR( FT_MEM_STRDUP( dst, str ) )
|
|
|
|
#define FT_MEM_DUP( dst, address, size ) \
|
|
(dst) = ft_mem_dup( memory, (address), (FT_ULong)(size), &error )
|
|
|
|
#define FT_DUP( dst, address, size ) \
|
|
FT_MEM_SET_ERROR( FT_MEM_DUP( dst, address, size ) )
|
|
|
|
|
|
/* Return >= 1 if a truncation occurs. */
|
|
/* Return 0 if the source string fits the buffer. */
|
|
/* This is *not* the same as strlcpy(). */
|
|
FT_BASE( FT_Int )
|
|
ft_mem_strcpyn( char* dst,
|
|
const char* src,
|
|
FT_ULong size );
|
|
|
|
#define FT_STRCPYN( dst, src, size ) \
|
|
ft_mem_strcpyn( (char*)dst, (const char*)(src), (FT_ULong)(size) )
|
|
|
|
/* */
|
|
|
|
|
|
FT_END_HEADER
|
|
|
|
#endif /* __FTMEMORY_H__ */
|
|
|
|
|
|
/* END */
|