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58026109d5
Better not use access to the *_collection_stub(), as it is an internal implementation detail. Signed-off-by: Jarno Rajahalme <jarno@ovn.org> Acked-by: Ben Pfaff <blp@ovn.org>
92 lines
5.0 KiB
C
92 lines
5.0 KiB
C
/*
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* Copyright (c) 2016 Nicira, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef OBJECT_COLLECTION_H
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#define OBJECT_COLLECTION_H 1
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#include <limits.h>
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#include <stdlib.h>
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/* A set of object pointers. */
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struct object_collection {
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void **objs; /* Objects. */
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size_t n; /* Number of objects collected. */
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size_t capacity; /* Number of objects that fit in 'objs'. */
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void *stub[5]; /* Preallocated array to avoid malloc(). */
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};
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void object_collection_init(struct object_collection *);
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void object_collection_add(struct object_collection *, void *);
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void object_collection_remove(struct object_collection *, void *);
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void object_collection_move(struct object_collection *to,
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struct object_collection *from);
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void *object_collection_detach(struct object_collection *);
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void object_collection_destroy(struct object_collection *);
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/* Macro for declaring type-safe pointer collections. 'TYPE' is the pointer
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* type which are collected, 'NAME' is the name for the type to be used in the
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* function names. */
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#define DECL_OBJECT_COLLECTION(TYPE, NAME) \
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struct NAME##_collection { \
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struct object_collection collection; \
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}; \
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\
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static inline void NAME##_collection_init(struct NAME##_collection *coll) \
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{ \
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object_collection_init(&coll->collection); \
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} \
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\
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static inline void NAME##_collection_add(struct NAME##_collection *coll, \
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TYPE obj) \
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{ \
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object_collection_add(&coll->collection, obj); \
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} \
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\
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static inline void NAME##_collection_remove(struct NAME##_collection *coll, \
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TYPE obj) \
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{ \
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object_collection_remove(&coll->collection, obj); \
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} \
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\
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static inline void NAME##_collection_move(struct NAME##_collection *to, \
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struct NAME##_collection *from) \
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{ \
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object_collection_move(&to->collection, &from->collection); \
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} \
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\
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static inline void NAME##_collection_destroy(struct NAME##_collection *coll) \
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{ \
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object_collection_destroy(&coll->collection); \
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} \
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\
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static inline TYPE* NAME##_collection_##NAME##s(const struct NAME##_collection *coll) \
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{ \
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return (TYPE*)coll->collection.objs; \
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} \
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\
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static inline size_t NAME##_collection_n(const struct NAME##_collection *coll) \
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{ \
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return coll->collection.n; \
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} \
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\
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static inline TYPE* NAME##_collection_detach(struct NAME##_collection *coll) \
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{ \
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return (TYPE*)object_collection_detach(&coll->collection); \
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}
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#endif /* object-collection.h */
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