91 lines
2.5 KiB
C
91 lines
2.5 KiB
C
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/*! \file exif-mem.h
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* \brief Define the ExifMem data type and the associated functions.
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* ExifMem defines the memory management functions used within libexif.
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*/
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/* exif-mem.h
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*
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* Copyright (c) 2003 Lutz Mueller <lutz@users.sourceforge.net>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301 USA.
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*/
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#ifndef __EXIF_MEM_H__
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#define __EXIF_MEM_H__
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#include <libexif/exif-utils.h>
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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/*! Should work like calloc()
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*
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* \param[in] s the size of the block to allocate.
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* \return the allocated memory and initialized.
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*/
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typedef void * (* ExifMemAllocFunc) (ExifLong s);
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/*! Should work like realloc()
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*
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* \param[in] p the pointer to reallocate
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* \param[in] s the size of the reallocated block
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* \return allocated memory
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*/
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typedef void * (* ExifMemReallocFunc) (void *p, ExifLong s);
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/*! Free method for ExifMem
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*
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* \param[in] p the pointer to free
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* \return the freed pointer
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*/
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typedef void (* ExifMemFreeFunc) (void *p);
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/*! ExifMem define a memory allocator */
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typedef struct _ExifMem ExifMem;
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/*! Create a new ExifMem
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*
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* \param[in] a the allocator function
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* \param[in] r the reallocator function
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* \param[in] f the free function
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*/
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ExifMem *exif_mem_new (ExifMemAllocFunc a, ExifMemReallocFunc r,
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ExifMemFreeFunc f);
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/*! Refcount an ExifMem
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*/
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void exif_mem_ref (ExifMem *);
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/*! Unrefcount an ExifMem.
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* If the refcount reaches 0, the ExifMem is freed
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*/
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void exif_mem_unref (ExifMem *);
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void *exif_mem_alloc (ExifMem *m, ExifLong s);
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void *exif_mem_realloc (ExifMem *m, void *p, ExifLong s);
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void exif_mem_free (ExifMem *m, void *p);
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/*! Create a new ExifMem with default values for your convenience
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*
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* \return return a new default ExifMem
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*/
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ExifMem *exif_mem_new_default (void);
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* __EXIF_MEM_H__ */
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