mirror of
https://github.com/openvswitch/ovs
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1c617a495f
The upcoming JSON-RPC library wants to use this library, and it needs some functions that are currently declared static.
53 lines
1.7 KiB
C
53 lines
1.7 KiB
C
/* Copyright (c) 2008, 2009 Nicira Networks, 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 BYTEQ_H
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#define BYTEQ_H 1
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#include <stdbool.h>
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#include <stddef.h>
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#include <stdint.h>
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/* Maximum number of bytes in a byteq. */
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#define BYTEQ_SIZE 512
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/* General-purpose circular queue of bytes. */
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struct byteq {
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uint8_t buffer[BYTEQ_SIZE]; /* Circular queue. */
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unsigned int head; /* Head of queue. */
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unsigned int tail; /* Chases the head. */
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};
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void byteq_init(struct byteq *);
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int byteq_used(const struct byteq *);
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int byteq_avail(const struct byteq *);
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bool byteq_is_empty(const struct byteq *);
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bool byteq_is_full(const struct byteq *);
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void byteq_put(struct byteq *, uint8_t c);
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void byteq_putn(struct byteq *, const void *, size_t n);
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void byteq_put_string(struct byteq *, const char *);
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uint8_t byteq_get(struct byteq *);
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int byteq_write(struct byteq *, int fd);
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int byteq_read(struct byteq *, int fd);
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uint8_t *byteq_head(struct byteq *);
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int byteq_headroom(const struct byteq *);
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void byteq_advance_head(struct byteq *, unsigned int n);
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int byteq_tailroom(const struct byteq *);
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const uint8_t *byteq_tail(const struct byteq *);
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void byteq_advance_tail(struct byteq *, unsigned int n);
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#endif /* byteq.h */
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