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/* GLIB - Library of useful routines for C programming
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* Modified by the GLib Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GLib Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GLib at ftp://ftp.gtk.org/pub/gtk/.
*/
#ifndef __G_MEM_H__
#define __G_MEM_H__
#include <gtypes.h>
/* optionally feature DMALLOC memory allocation debugger
*/
#ifdef USE_DMALLOC
#include "dmalloc.h"
#endif
G_BEGIN_DECLS
typedef struct _GAllocator GAllocator;
typedef struct _GMemChunk GMemChunk;
/* Provide macros for easily allocating memory. The macros
* will cast the allocated memory to the specified type
* in order to avoid compiler warnings. (Makes the code neater).
*/
#ifdef __DMALLOC_H__
# define g_new(type, count) (ALLOC (type, count))
# define g_new0(type, count) (CALLOC (type, count))
# define g_renew(type, mem, count) (REALLOC (mem, type, count))
#else /* __DMALLOC_H__ */
# define g_new(type, count) \
((type *) g_malloc ((unsigned) sizeof (type) * (count)))
# define g_new0(type, count) \
((type *) g_malloc0 ((unsigned) sizeof (type) * (count)))
# define g_renew(type, mem, count) \
((type *) g_realloc (mem, (unsigned) sizeof (type) * (count)))
#endif /* __DMALLOC_H__ */
#define g_mem_chunk_create(type, pre_alloc, alloc_type) ( \
g_mem_chunk_new (#type " mem chunks (" #pre_alloc ")", \
sizeof (type), \
sizeof (type) * (pre_alloc), \
(alloc_type)) \
)
#define g_chunk_new(type, chunk) ( \
(type *) g_mem_chunk_alloc (chunk) \
)
#define g_chunk_new0(type, chunk) ( \
(type *) g_mem_chunk_alloc0 (chunk) \
)
#define g_chunk_free(mem, mem_chunk) G_STMT_START { \
g_mem_chunk_free ((mem_chunk), (mem)); \
} G_STMT_END
/* Memory allocation and debugging
*/
#ifdef USE_DMALLOC
#define g_malloc(size) ((gpointer) MALLOC (size))
#define g_malloc0(size) ((gpointer) CALLOC (char, size))
#define g_realloc(mem,size) ((gpointer) REALLOC (mem, char, size))
#define g_free(mem) FREE (mem)
#else /* !USE_DMALLOC */
gpointer g_malloc (gulong size);
gpointer g_malloc0 (gulong size);
gpointer g_realloc (gpointer mem,
gulong size);
void g_free (gpointer mem);
#endif /* !USE_DMALLOC */
void g_mem_profile (void);
void g_mem_check (gpointer mem);
/* Generic allocators
*/
GAllocator* g_allocator_new (const gchar *name,
guint n_preallocs);
void g_allocator_free (GAllocator *allocator);
#define G_ALLOCATOR_LIST (1)
#define G_ALLOCATOR_SLIST (2)
#define G_ALLOCATOR_NODE (3)
/* "g_mem_chunk_new" creates a new memory chunk.
* Memory chunks are used to allocate pieces of memory which are
* always the same size. Lists are a good example of such a data type.
* The memory chunk allocates and frees blocks of memory as needed.
* Just be sure to call "g_mem_chunk_free" and not "g_free" on data
* allocated in a mem chunk. ("g_free" will most likely cause a seg
* fault...somewhere).
*
* Oh yeah, GMemChunk is an opaque data type. (You don't really
* want to know what's going on inside do you?)
*/
/* ALLOC_ONLY MemChunk's can only allocate memory. The free operation
* is interpreted as a no op. ALLOC_ONLY MemChunk's save 4 bytes per
* atom. (They are also useful for lists which use MemChunk to allocate
* memory but are also part of the MemChunk implementation).
* ALLOC_AND_FREE MemChunk's can allocate and free memory.
*/
#define G_ALLOC_ONLY 1
#define G_ALLOC_AND_FREE 2
GMemChunk* g_mem_chunk_new (gchar *name,
gint atom_size,
gulong area_size,
gint type);
void g_mem_chunk_destroy (GMemChunk *mem_chunk);
gpointer g_mem_chunk_alloc (GMemChunk *mem_chunk);
gpointer g_mem_chunk_alloc0 (GMemChunk *mem_chunk);
void g_mem_chunk_free (GMemChunk *mem_chunk,
gpointer mem);
void g_mem_chunk_clean (GMemChunk *mem_chunk);
void g_mem_chunk_reset (GMemChunk *mem_chunk);
void g_mem_chunk_print (GMemChunk *mem_chunk);
void g_mem_chunk_info (void);
/* Ah yes...we have a "g_blow_chunks" function.
* "g_blow_chunks" simply compresses all the chunks. This operation
* consists of freeing every memory area that should be freed (but
* which we haven't gotten around to doing yet). And, no,
* "g_blow_chunks" doesn't follow the naming scheme, but it is a
* much better name than "g_mem_chunk_clean_all" or something
* similar.
*/
void g_blow_chunks (void);
G_END_DECLS
#endif /* __G_MEM_H__ */
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