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3c53fb8790
The type system should have never been relegated to libgobject: it's a low level API to register types at run time. Having GType inside libglib allows us to use the type system information everywhere: - generic but type safe storage data types - explicit memory management semantics for all data types - enumeration types for all flags Having the type system inside libglib also allows us to create new and better fundamental types in the future, like sum types, option types, tuples, and generic types. Moved: - gatomicarray - gboxed - genums - gtype - gtypeplugin - gvalue The move is mostly Git surgery, but given the amount of internal API surface, it results in a single commit to avoid breaking bisectability. We need to maintain `gobject/gvaluecollector.h` as a publicly installed header but, to avoid issues in case of excessive inclusions, we make it conflict with `glib/gvaluecollector.h`. See: #2370 See: https://discourse.gnome.org/t/straw-man-moving-the-gtype-api-down-to-libglib-2-0/11169
67 lines
2.3 KiB
C
67 lines
2.3 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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* SPDX-License-Identifier: LGPL-2.1-or-later
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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 2.1 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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#include <glib/gtypes.h>
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#include <glib/gatomic.h>
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G_BEGIN_DECLS
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typedef union _GAtomicArrayMetadata
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{
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gsize size;
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/* We have to ensure that the memory location is sufficiently aligned to
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* store any object. With C11 this would be max_align_t, but in practise
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* gpointer is sufficient for all known architectures. We could change
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* this to `_Alignas(max_align_t) char pad` once we depend on C11. */
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gpointer _alignment_padding;
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} GAtomicArrayMetadata;
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#define G_ATOMIC_ARRAY_DATA_SIZE(mem) (((GAtomicArrayMetadata *) (mem) - 1)->size)
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typedef struct _GAtomicArray GAtomicArray;
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struct _GAtomicArray {
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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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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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