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[FreeBSD/releng/10.0.git] / contrib / apr-util / buckets / apr_buckets_refcount.c
1 /* Licensed to the Apache Software Foundation (ASF) under one or more
2  * contributor license agreements.  See the NOTICE file distributed with
3  * this work for additional information regarding copyright ownership.
4  * The ASF licenses this file to You under the Apache License, Version 2.0
5  * (the "License"); you may not use this file except in compliance with
6  * the License.  You may obtain a copy of the License at
7  *
8  *     http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16
17 #include "apr_buckets.h"
18
19 APU_DECLARE_NONSTD(apr_status_t) apr_bucket_shared_split(apr_bucket *a,
20                                                          apr_size_t point)
21 {
22     apr_bucket_refcount *r = a->data;
23     apr_status_t rv;
24
25     if ((rv = apr_bucket_simple_split(a, point)) != APR_SUCCESS) {
26         return rv;
27     }
28     r->refcount++;
29
30     return APR_SUCCESS;
31 }
32
33 APU_DECLARE_NONSTD(apr_status_t) apr_bucket_shared_copy(apr_bucket *a,
34                                                         apr_bucket **b)
35 {
36     apr_bucket_refcount *r = a->data;
37
38     apr_bucket_simple_copy(a, b);
39     r->refcount++;
40
41     return APR_SUCCESS;
42 }
43
44 APU_DECLARE(int) apr_bucket_shared_destroy(void *data)
45 {
46     apr_bucket_refcount *r = data;
47     r->refcount--;
48     return (r->refcount == 0);
49 }
50
51 APU_DECLARE(apr_bucket *) apr_bucket_shared_make(apr_bucket *b, void *data,
52                                                  apr_off_t start,
53                                                  apr_size_t length)
54 {
55     apr_bucket_refcount *r = data;
56
57     b->data   = r;
58     b->start  = start;
59     b->length = length;
60     /* caller initializes the type field */
61     r->refcount = 1;
62
63     return b;
64 }