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59 lines
2.0 KiB
C
59 lines
2.0 KiB
C
/* GObject - GLib Type, Object, Parameter and Signal Library
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* Copyright (C) 2009 Benjamin Otte <otte@gnome.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General
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* Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __G_ATOMIC_ARRAY_H__
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#define __G_ATOMIC_ARRAY_H__
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#if !defined (__GLIB_GOBJECT_H_INSIDE__) && !defined (GOBJECT_COMPILATION)
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#error "Only <glib-object.h> can be included directly."
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#endif
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#include <glib/glib.h>
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G_BEGIN_DECLS
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#define G_ATOMIC_ARRAY_DATA_SIZE(mem) (*((gsize *) (mem) - 1))
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typedef struct _GAtomicArray GAtomicArray;
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struct _GAtomicArray {
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volatile gpointer data; /* elements - atomic */
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};
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void _g_atomic_array_init (GAtomicArray *array);
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gpointer _g_atomic_array_copy (GAtomicArray *array,
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gsize header_size,
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gsize additional_element_size);
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void _g_atomic_array_update (GAtomicArray *array,
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gpointer new_data);
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#define G_ATOMIC_ARRAY_GET_LOCKED(_array, _type) ((_type *)((_array)->data))
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#define G_ATOMIC_ARRAY_DO_TRANSACTION(_array, _type, _C_) G_STMT_START { \
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volatile gpointer *_datap = &(_array)->data; \
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_type *transaction_data, *__check; \
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\
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__check = g_atomic_pointer_get (_datap); \
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do { \
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transaction_data = __check; \
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{_C_;} \
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__check = g_atomic_pointer_get (_datap); \
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} while (transaction_data != __check); \
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} G_STMT_END
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G_END_DECLS
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#endif /* __G_ATOMIC_ARRAY_H__ */
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