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