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1 office 1 /* GLIB sliced memory - fast threaded memory chunk allocator
2 * Copyright (C) 2005 Tim Janik
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
16 */
17  
18 #ifndef __G_SLICE_H__
19 #define __G_SLICE_H__
20  
21 #if !defined (__GLIB_H_INSIDE__) && !defined (GLIB_COMPILATION)
22 #error "Only <glib.h> can be included directly."
23 #endif
24  
25 #include <glib/gtypes.h>
26  
27 G_BEGIN_DECLS
28  
29 /* slices - fast allocation/release of small memory blocks
30 */
31 GLIB_AVAILABLE_IN_ALL
32 gpointer g_slice_alloc (gsize block_size) G_GNUC_MALLOC G_GNUC_ALLOC_SIZE(1);
33 GLIB_AVAILABLE_IN_ALL
34 gpointer g_slice_alloc0 (gsize block_size) G_GNUC_MALLOC G_GNUC_ALLOC_SIZE(1);
35 GLIB_AVAILABLE_IN_ALL
36 gpointer g_slice_copy (gsize block_size,
37 gconstpointer mem_block) G_GNUC_MALLOC G_GNUC_ALLOC_SIZE(1);
38 GLIB_AVAILABLE_IN_ALL
39 void g_slice_free1 (gsize block_size,
40 gpointer mem_block);
41 GLIB_AVAILABLE_IN_ALL
42 void g_slice_free_chain_with_offset (gsize block_size,
43 gpointer mem_chain,
44 gsize next_offset);
45 #define g_slice_new(type) ((type*) g_slice_alloc (sizeof (type)))
46 #define g_slice_new0(type) ((type*) g_slice_alloc0 (sizeof (type)))
47 /* MemoryBlockType *
48 * g_slice_dup (MemoryBlockType,
49 * MemoryBlockType *mem_block);
50 * g_slice_free (MemoryBlockType,
51 * MemoryBlockType *mem_block);
52 * g_slice_free_chain (MemoryBlockType,
53 * MemoryBlockType *first_chain_block,
54 * memory_block_next_field);
55 * pseudo prototypes for the macro
56 * definitions following below.
57 */
58  
59 /* we go through extra hoops to ensure type safety */
60 #define g_slice_dup(type, mem) \
61 (1 ? (type*) g_slice_copy (sizeof (type), (mem)) \
62 : ((void) ((type*) 0 == (mem)), (type*) 0))
63 #define g_slice_free(type, mem) \
64 G_STMT_START { \
65 if (1) g_slice_free1 (sizeof (type), (mem)); \
66 else (void) ((type*) 0 == (mem)); \
67 } G_STMT_END
68 #define g_slice_free_chain(type, mem_chain, next) \
69 G_STMT_START { \
70 if (1) g_slice_free_chain_with_offset (sizeof (type), \
71 (mem_chain), G_STRUCT_OFFSET (type, next)); \
72 else (void) ((type*) 0 == (mem_chain)); \
73 } G_STMT_END
74  
75 /* --- internal debugging API --- */
76 typedef enum {
77 G_SLICE_CONFIG_ALWAYS_MALLOC = 1,
78 G_SLICE_CONFIG_BYPASS_MAGAZINES,
79 G_SLICE_CONFIG_WORKING_SET_MSECS,
80 G_SLICE_CONFIG_COLOR_INCREMENT,
81 G_SLICE_CONFIG_CHUNK_SIZES,
82 G_SLICE_CONFIG_CONTENTION_COUNTER
83 } GSliceConfig;
84  
85 GLIB_DEPRECATED_IN_2_34
86 void g_slice_set_config (GSliceConfig ckey, gint64 value);
87 GLIB_DEPRECATED_IN_2_34
88 gint64 g_slice_get_config (GSliceConfig ckey);
89 GLIB_DEPRECATED_IN_2_34
90 gint64* g_slice_get_config_state (GSliceConfig ckey, gint64 address, guint *n_values);
91  
92 #ifdef G_ENABLE_DEBUG
93 GLIB_AVAILABLE_IN_ALL
94 void g_slice_debug_tree_statistics (void);
95 #endif
96  
97 G_END_DECLS
98  
99 #endif /* __G_SLICE_H__ */