mirror of
https://gitlab.gnome.org/GNOME/glib.git
synced 2024-11-10 19:36:18 +01:00
782a8e2e7c
Thu Dec 28 10:21:46 2000 Tim Janik <timj@gtk.org>
* gmem.[hc]: got rid of outdated dmalloc support. provide g_try_malloc()
and g_try_realloc() which _may_ fail and return NULL.
nuked g_mem_check(), provided GMemVTable for memory function
virtualization, alterable at program startup with g_mem_set_vtable().
provided glib_mem_profiler_table and g_mem_profile() to support limited
profiling information out of the box (uses mprotect() for free()ed areas
on linux).
provide globally visible G_MEM_ALIGN.
buncha cleanups.
* docs/macros.txt: file to get a clue about the various configuration
macros.
* docs/debugging.txt: explain debugging traps.
* configure.in: got rid of --enable-mem-check and --enable-mem-profile,
define GLIB_SIZEOF_VOID_P and GLIB_SIZEOF_LONG. check malloc prototypes
and define SANE_MALLOC_PROTOS is we can use them.
<boy, is this file a mess>
* gutils.c, gscanner.c: fix up compatibility warnings, use g_message().
Thu Dec 28 11:36:44 2000 Tim Janik <timj@gtk.org>
* gbsearcharray.c (upper_power2): disable G_BSEARCH_ALIGN_POWER2
fucntionality if DISABLE_MEM_POOLS is defined.
* gtype.c: honour DISABLE_MEM_POOLS.
* gsignal.c (g_signal_init): flag signal key bsearch array with
G_BSEARCH_ALIGN_POWER2 to avoid excessive growth time. honour
DISABLE_MEM_POOLS.
* gparam.h: added G_PARAM_READWRITE alias for (G_PARAM_READABLE |
G_PARAM_WRITABLE).
175 lines
5.6 KiB
C
175 lines
5.6 KiB
C
/* 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>
|
|
|
|
G_BEGIN_DECLS
|
|
|
|
typedef struct _GAllocator GAllocator;
|
|
typedef struct _GMemChunk GMemChunk;
|
|
typedef struct _GMemVTable GMemVTable;
|
|
|
|
|
|
#if GLIB_SIZEOF_VOID_P > GLIB_SIZEOF_LONG
|
|
# define G_MEM_ALIGN GLIB_SIZEOF_VOID_P
|
|
#else /* GLIB_SIZEOF_VOID_P <= GLIB_SIZEOF_LONG */
|
|
# define G_MEM_ALIGN GLIB_SIZEOF_LONG
|
|
#endif /* GLIB_SIZEOF_VOID_P <= GLIB_SIZEOF_LONG */
|
|
|
|
|
|
/* Memory allocation functions
|
|
*/
|
|
gpointer g_malloc (gulong n_bytes);
|
|
gpointer g_malloc0 (gulong n_bytes);
|
|
gpointer g_realloc (gpointer mem,
|
|
gulong n_bytes);
|
|
void g_free (gpointer mem);
|
|
gpointer g_try_malloc (gulong n_bytes);
|
|
gpointer g_try_realloc (gpointer mem,
|
|
gulong n_bytes);
|
|
|
|
|
|
/* Convenience memory allocators
|
|
*/
|
|
#define g_new(struct_type, n_structs) \
|
|
((struct_type *) g_malloc (((gsize) sizeof (struct_type)) * ((gsize) (n_structs))))
|
|
#define g_new0(struct_type, n_structs) \
|
|
((struct_type *) g_malloc0 (((gsize) sizeof (struct_type)) * ((gsize) (n_structs))))
|
|
#define g_renew(struct_type, mem, n_structs) \
|
|
((struct_type *) g_realloc ((mem), ((gsize) sizeof (struct_type)) * ((gsize) (n_structs))))
|
|
|
|
|
|
/* Memory allocation virtualization for debugging purposes
|
|
* g_mem_set_vtable() has to be the very first GLib function called
|
|
* if being used
|
|
*/
|
|
struct _GMemVTable
|
|
{
|
|
gpointer (*malloc) (gsize n_bytes);
|
|
gpointer (*realloc) (gpointer mem,
|
|
gsize n_bytes);
|
|
void (*free) (gpointer mem);
|
|
/* optional */
|
|
gpointer (*calloc) (gsize n_blocks,
|
|
gsize n_block_bytes);
|
|
gpointer (*try_malloc) (gsize n_bytes);
|
|
gpointer (*try_realloc) (gpointer mem,
|
|
gsize n_bytes);
|
|
};
|
|
void g_mem_set_vtable (GMemVTable *vtable);
|
|
|
|
|
|
/* Memory profiler and checker, has to be enabled via g_mem_set_vtable()
|
|
*/
|
|
extern GMemVTable *glib_mem_profiler_table;
|
|
void g_mem_profile (void);
|
|
|
|
|
|
/* Memchunk convenience functions
|
|
*/
|
|
#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
|
|
|
|
|
|
/* "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);
|
|
|
|
|
|
/* Generic allocators
|
|
*/
|
|
GAllocator* g_allocator_new (const gchar *name,
|
|
guint n_preallocs);
|
|
void g_allocator_free (GAllocator *allocator);
|
|
|
|
/* internal */
|
|
#define G_ALLOCATOR_LIST (1)
|
|
#define G_ALLOCATOR_SLIST (2)
|
|
#define G_ALLOCATOR_NODE (3)
|
|
|
|
|
|
G_END_DECLS
|
|
|
|
#endif /* __G_MEM_H__ */
|