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epoc32/include/stdapis/glib-2.0/glib/gmem.h
author William Roberts <williamr@symbian.org>
Wed, 31 Mar 2010 12:27:01 +0100
branchSymbian2
changeset 3 e1b950c65cb4
parent 0 061f57f2323e
permissions -rw-r--r--
Attempt to represent the S^2->S^3 header reorganisation as a series of "hg rename" operations 
     1 /* GLIB - Library of useful routines for C programming

     2  * Copyright (C) 1995-1997  Peter Mattis, Spencer Kimball and Josh MacDonald

     3  * Portions copyright (c) 2006 Nokia Corporation.  All rights reserved.

     4  *

     5  * This library is free software; you can redistribute it and/or

     6  * modify it under the terms of the GNU Lesser General Public

     7  * License as published by the Free Software Foundation; either

     8  * version 2 of the License, or (at your option) any later version.

     9  *

    10  * This library is distributed in the hope that it will be useful,

    11  * but WITHOUT ANY WARRANTY; without even the implied warranty of

    12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the GNU

    13  * Lesser General Public License for more details.

    14  *

    15  * You should have received a copy of the GNU Lesser General Public

    16  * License along with this library; if not, write to the

    17  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,

    18  * Boston, MA 02111-1307, USA.

    19  */

    20 

    21 /*

    22  * Modified by the GLib Team and others 1997-2000.  See the AUTHORS

    23  * file for a list of people on the GLib Team.  See the ChangeLog

    24  * files for a list of changes.  These files are distributed with

    25  * GLib at ftp://ftp.gtk.org/pub/gtk/. 

    26  */

    27 

    28 #ifndef __G_MEM_H__

    29 #define __G_MEM_H__

    30 

    31 #include <_ansi.h>

    32 #include <glib/gtypes.h>

    33 

    34 G_BEGIN_DECLS

    35 

    36 typedef struct _GMemVTable GMemVTable;

    37 

    38 

    39 #if GLIB_SIZEOF_VOID_P > GLIB_SIZEOF_LONG

    40 #  define G_MEM_ALIGN	GLIB_SIZEOF_VOID_P

    41 #else	/* GLIB_SIZEOF_VOID_P <= GLIB_SIZEOF_LONG */

    42 #  define G_MEM_ALIGN	GLIB_SIZEOF_LONG

    43 #endif	/* GLIB_SIZEOF_VOID_P <= GLIB_SIZEOF_LONG */

    44 

    45 

    46 /* Memory allocation functions

    47  */

    48 IMPORT_C gpointer g_malloc         (gulong	 n_bytes) G_GNUC_MALLOC;

    49 IMPORT_C gpointer g_malloc0        (gulong	 n_bytes) G_GNUC_MALLOC;

    50 IMPORT_C gpointer g_realloc        (gpointer	 mem,

    51 			   gulong	 n_bytes) G_GNUC_WARN_UNUSED_RESULT;

    52 IMPORT_C void	 g_free	          (gpointer	 mem);

    53 IMPORT_C gpointer g_try_malloc     (gulong	 n_bytes) G_GNUC_MALLOC;

    54 IMPORT_C gpointer g_try_malloc0    (gulong	 n_bytes) G_GNUC_MALLOC;

    55 IMPORT_C gpointer g_try_realloc    (gpointer	 mem,

    56 			   gulong	 n_bytes) G_GNUC_WARN_UNUSED_RESULT;

    57 

    58 

    59 /* Convenience memory allocators

    60  */

    61 #define g_new(struct_type, n_structs)		\

    62     ((struct_type *) g_malloc (((gsize) sizeof (struct_type)) * ((gsize) (n_structs))))

    63 #define g_new0(struct_type, n_structs)		\

    64     ((struct_type *) g_malloc0 (((gsize) sizeof (struct_type)) * ((gsize) (n_structs))))

    65 #define g_renew(struct_type, mem, n_structs)	\

    66     ((struct_type *) g_realloc ((mem), ((gsize) sizeof (struct_type)) * ((gsize) (n_structs))))

    67 

    68 #define g_try_new(struct_type, n_structs)		\

    69     ((struct_type *) g_try_malloc (((gsize) sizeof (struct_type)) * ((gsize) (n_structs))))

    70 #define g_try_new0(struct_type, n_structs)		\

    71     ((struct_type *) g_try_malloc0 (((gsize) sizeof (struct_type)) * ((gsize) (n_structs))))

    72 #define g_try_renew(struct_type, mem, n_structs)	\

    73     ((struct_type *) g_try_realloc ((mem), ((gsize) sizeof (struct_type)) * ((gsize) (n_structs))))

    74 

    75 

    76 /* Memory allocation virtualization for debugging purposes

    77  * g_mem_set_vtable() has to be the very first GLib function called

    78  * if being used

    79  */

    80 struct _GMemVTable

    81 {

    82   gpointer (*malloc)      (gsize    n_bytes);

    83   gpointer (*realloc)     (gpointer mem,

    84 			   gsize    n_bytes);

    85   void     (*free)        (gpointer mem);

    86   /* optional; set to NULL if not used ! */

    87   gpointer (*calloc)      (gsize    n_blocks,

    88 			   gsize    n_block_bytes);

    89   gpointer (*try_malloc)  (gsize    n_bytes);

    90   gpointer (*try_realloc) (gpointer mem,

    91 			   gsize    n_bytes);

    92 };

    93 IMPORT_C void	 g_mem_set_vtable (GMemVTable	*vtable);

    94 IMPORT_C gboolean g_mem_is_system_malloc (void);

    95 

    96 #ifdef __SYMBIAN32__

    97 IMPORT_C gboolean * _g_mem_gc_friendly();

    98 #endif /* __SYMBIAN32__ */

    99 GLIB_VAR gboolean g_mem_gc_friendly;

   100 

   101 /* Memory profiler and checker, has to be enabled via g_mem_set_vtable()*/

   102 #ifdef __SYMBIAN32__

   103 IMPORT_C GMemVTable ** _glib_mem_profiler_table();

   104 #endif /* __SYMBIAN32__ */

   105 GLIB_VAR GMemVTable	*glib_mem_profiler_table;

   106 

   107 IMPORT_C void	g_mem_profile	(void);

   108 

   109 

   110 /* deprecated memchunks and allocators */

   111 #if !defined (G_DISABLE_DEPRECATED) || defined (GTK_COMPILATION) || defined (GDK_COMPILATION)

   112 typedef struct _GAllocator GAllocator;

   113 typedef struct _GMemChunk  GMemChunk;

   114 #define g_mem_chunk_create(type, pre_alloc, alloc_type)	( \

   115   g_mem_chunk_new (#type " mem chunks (" #pre_alloc ")", \

   116 		   sizeof (type), \

   117 		   sizeof (type) * (pre_alloc), \

   118 		   (alloc_type)) \

   119 )

   120 #define g_chunk_new(type, chunk)	( \

   121   (type *) g_mem_chunk_alloc (chunk) \

   122 )

   123 #define g_chunk_new0(type, chunk)	( \

   124   (type *) g_mem_chunk_alloc0 (chunk) \

   125 )

   126 #define g_chunk_free(mem, mem_chunk)	G_STMT_START { \

   127   g_mem_chunk_free ((mem_chunk), (mem)); \

   128 } G_STMT_END

   129 #define G_ALLOC_ONLY	  1

   130 #define G_ALLOC_AND_FREE  2

   131 IMPORT_C GMemChunk* g_mem_chunk_new     (const gchar *name,

   132 				gint         atom_size,

   133 				gulong       area_size,

   134 				gint         type);

   135 IMPORT_C void       g_mem_chunk_destroy (GMemChunk   *mem_chunk);

   136 IMPORT_C gpointer   g_mem_chunk_alloc   (GMemChunk   *mem_chunk);

   137 IMPORT_C gpointer   g_mem_chunk_alloc0  (GMemChunk   *mem_chunk);

   138 IMPORT_C void       g_mem_chunk_free    (GMemChunk   *mem_chunk,

   139 				gpointer     mem);

   140 IMPORT_C void       g_mem_chunk_clean   (GMemChunk   *mem_chunk);

   141 IMPORT_C void       g_mem_chunk_reset   (GMemChunk   *mem_chunk);

   142 IMPORT_C void       g_mem_chunk_print   (GMemChunk   *mem_chunk);

   143 IMPORT_C void       g_mem_chunk_info    (void);

   144 IMPORT_C void	   g_blow_chunks (void);

   145 IMPORT_C GAllocator* g_allocator_new   (const gchar  *name,

   146 				guint         n_preallocs);

   147 IMPORT_C void        g_allocator_free  (GAllocator   *allocator);

   148 #define	G_ALLOCATOR_LIST       (1)

   149 #define	G_ALLOCATOR_SLIST      (2)

   150 #define	G_ALLOCATOR_NODE       (3)

   151 #endif /* G_DISABLE_DEPRECATED */

   152 

   153 G_END_DECLS

   154 

   155 #endif /* __G_MEM_H__ */
test