| /* GLIB sliced memory - fast threaded memory chunk allocator |
| * Copyright (C) 2005 Tim Janik |
| * |
| * SPDX-License-Identifier: LGPL-2.1-or-later |
| * |
| * 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 2.1 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, see <http://www.gnu.org/licenses/>. |
| */ |
| |
| #ifndef __G_SLICE_H__ |
| #define __G_SLICE_H__ |
| |
| #if !defined (__GLIB_H_INSIDE__) && !defined (GLIB_COMPILATION) |
| #error "Only <glib.h> can be included directly." |
| #endif |
| |
| #include <glib/gtypes.h> |
| #include <string.h> |
| |
| G_BEGIN_DECLS |
| |
| /* slices - fast allocation/release of small memory blocks |
| */ |
| GLIB_AVAILABLE_IN_ALL |
| gpointer g_slice_alloc (gsize block_size) G_GNUC_MALLOC G_GNUC_ALLOC_SIZE(1); |
| GLIB_AVAILABLE_IN_ALL |
| gpointer g_slice_alloc0 (gsize block_size) G_GNUC_MALLOC G_GNUC_ALLOC_SIZE(1); |
| GLIB_AVAILABLE_IN_ALL |
| gpointer g_slice_copy (gsize block_size, |
| gconstpointer mem_block) G_GNUC_ALLOC_SIZE(1); |
| GLIB_AVAILABLE_IN_ALL |
| void g_slice_free1 (gsize block_size, |
| gpointer mem_block); |
| GLIB_AVAILABLE_IN_ALL |
| void g_slice_free_chain_with_offset (gsize block_size, |
| gpointer mem_chain, |
| gsize next_offset); |
| #define g_slice_new(type) ((type*) g_slice_alloc (sizeof (type))) |
| |
| /* Allow the compiler to inline memset(). Since the size is a constant, this |
| * can significantly improve performance. */ |
| #if defined (__GNUC__) && (__GNUC__ >= 2) && defined (__OPTIMIZE__) |
| # define g_slice_new0(type) \ |
| (type *) (G_GNUC_EXTENSION ({ \ |
| gsize __s = sizeof (type); \ |
| gpointer __p; \ |
| __p = g_slice_alloc (__s); \ |
| memset (__p, 0, __s); \ |
| __p; \ |
| })) |
| #else |
| # define g_slice_new0(type) ((type*) g_slice_alloc0 (sizeof (type))) |
| #endif |
| |
| /* MemoryBlockType * |
| * g_slice_dup (MemoryBlockType, |
| * MemoryBlockType *mem_block); |
| * g_slice_free (MemoryBlockType, |
| * MemoryBlockType *mem_block); |
| * g_slice_free_chain (MemoryBlockType, |
| * MemoryBlockType *first_chain_block, |
| * memory_block_next_field); |
| * pseudo prototypes for the macro |
| * definitions following below. |
| */ |
| |
| /* we go through extra hoops to ensure type safety */ |
| #define g_slice_dup(type, mem) \ |
| (1 ? (type*) g_slice_copy (sizeof (type), (mem)) \ |
| : ((void) ((type*) 0 == (mem)), (type*) 0)) |
| #define g_slice_free(type, mem) \ |
| G_STMT_START { \ |
| if (1) g_slice_free1 (sizeof (type), (mem)); \ |
| else (void) ((type*) 0 == (mem)); \ |
| } G_STMT_END |
| #define g_slice_free_chain(type, mem_chain, next) \ |
| G_STMT_START { \ |
| if (1) g_slice_free_chain_with_offset (sizeof (type), \ |
| (mem_chain), G_STRUCT_OFFSET (type, next)); \ |
| else (void) ((type*) 0 == (mem_chain)); \ |
| } G_STMT_END |
| |
| /* --- internal debugging API --- */ |
| typedef enum { |
| G_SLICE_CONFIG_ALWAYS_MALLOC = 1, |
| G_SLICE_CONFIG_BYPASS_MAGAZINES, |
| G_SLICE_CONFIG_WORKING_SET_MSECS, |
| G_SLICE_CONFIG_COLOR_INCREMENT, |
| G_SLICE_CONFIG_CHUNK_SIZES, |
| G_SLICE_CONFIG_CONTENTION_COUNTER |
| } GSliceConfig; |
| |
| GLIB_DEPRECATED_IN_2_34 |
| void g_slice_set_config (GSliceConfig ckey, gint64 value); |
| GLIB_DEPRECATED_IN_2_34 |
| gint64 g_slice_get_config (GSliceConfig ckey); |
| GLIB_DEPRECATED_IN_2_34 |
| gint64* g_slice_get_config_state (GSliceConfig ckey, gint64 address, guint *n_values); |
| |
| #ifndef __GI_SCANNER__ |
| #ifdef G_ENABLE_DEBUG |
| GLIB_AVAILABLE_IN_ALL |
| void g_slice_debug_tree_statistics (void); |
| #endif |
| #endif |
| |
| G_END_DECLS |
| |
| #endif /* __G_SLICE_H__ */ |