| 1 | /* GObject - GLib Type, Object, Parameter and Signal Library |
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| 2 | * Copyright (C) 2009 Benjamin Otte <otte@gnome.org> |
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| 3 | * |
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| 4 | * This library is free software; you can redistribute it and/or |
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| 5 | * modify it under the terms of the GNU Lesser General Public |
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| 6 | * License as published by the Free Software Foundation; either |
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| 7 | * version 2.1 of the License, or (at your option) any later version. |
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| 8 | * |
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| 9 | * This library is distributed in the hope that it will be useful, |
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| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 12 | * Lesser General Public License for more details. |
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| 13 | * |
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| 14 | * You should have received a copy of the GNU Lesser General |
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| 15 | * Public License along with this library; if not, see <http://www.gnu.org/licenses/>. |
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| 16 | */ |
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| 17 | #ifndef __G_ATOMIC_ARRAY_H__ |
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| 18 | #define __G_ATOMIC_ARRAY_H__ |
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| 19 | |
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| 20 | #if !defined (__GLIB_GOBJECT_H_INSIDE__) && !defined (GOBJECT_COMPILATION) |
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| 21 | #error "Only <glib-object.h> can be included directly." |
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| 22 | #endif |
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| 23 | |
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| 24 | #include <glib/glib.h> |
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| 25 | |
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| 26 | G_BEGIN_DECLS |
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| 27 | |
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| 28 | #define G_ATOMIC_ARRAY_DATA_SIZE(mem) (*((gsize *) (mem) - 1)) |
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| 29 | |
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| 30 | typedef struct _GAtomicArray GAtomicArray; |
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| 31 | struct _GAtomicArray { |
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| 32 | gpointer data; /* elements - atomic */ |
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| 33 | }; |
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| 34 | |
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| 35 | void _g_atomic_array_init (GAtomicArray *array); |
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| 36 | gpointer _g_atomic_array_copy (GAtomicArray *array, |
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| 37 | gsize , |
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| 38 | gsize additional_element_size); |
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| 39 | void _g_atomic_array_update (GAtomicArray *array, |
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| 40 | gpointer new_data); |
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| 41 | |
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| 42 | #define G_ATOMIC_ARRAY_GET_LOCKED(_array, _type) ((_type *)((_array)->data)) |
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| 43 | |
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| 44 | #define G_ATOMIC_ARRAY_DO_TRANSACTION(_array, _type, _C_) G_STMT_START { \ |
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| 45 | gpointer *_datap = &(_array)->data; \ |
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| 46 | _type *transaction_data, *__check; \ |
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| 47 | \ |
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| 48 | __check = g_atomic_pointer_get (_datap); \ |
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| 49 | do { \ |
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| 50 | transaction_data = __check; \ |
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| 51 | {_C_;} \ |
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| 52 | __check = g_atomic_pointer_get (_datap); \ |
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| 53 | } while (transaction_data != __check); \ |
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| 54 | } G_STMT_END |
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| 55 | |
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| 56 | G_END_DECLS |
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| 57 | |
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| 58 | #endif /* __G_ATOMIC_ARRAY_H__ */ |
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| 59 | |
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