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_shm.h"
18#include "apr_errno.h"
19#include "apr_general.h"
20#include "apr_lib.h"
21#include "apr_strings.h"
22#include "apr_time.h"
23#include "testshm.h"
24#include "apr.h"
25
26#if APR_HAVE_STDLIB_H
27#include <stdlib.h>
28#endif
29
30
31#if APR_HAS_SHARED_MEMORY
32static void msgput(int boxnum, char *msg)
33{
34    apr_cpystrn(boxes[boxnum].msg, msg, strlen(msg) + 1);
35    boxes[boxnum].msgavail = 1;
36}
37
38int main(void)
39{
40    apr_status_t rv;
41    apr_pool_t *pool;
42    apr_shm_t *shm;
43    int i;
44    int sent = 0;
45
46    apr_initialize();
47
48    if (apr_pool_create(&pool, NULL) != APR_SUCCESS) {
49        exit(-1);
50    }
51
52    rv = apr_shm_attach(&shm, SHARED_FILENAME, pool);
53    if (rv != APR_SUCCESS) {
54        exit(-2);
55    }
56
57    boxes = apr_shm_baseaddr_get(shm);
58
59    /* produce messages on all of the boxes, in descending order,
60     * Yes, we could just return N_BOXES, but I want to have a double-check
61     * in this code.  The original code actually sent N_BOXES - 1 messages,
62     * so rather than rely on possibly buggy code, this way we know that we
63     * are returning the right number.
64     */
65    for (i = N_BOXES - 1, sent = 0; i >= 0; i--, sent++) {
66        msgput(i, MSG);
67        apr_sleep(apr_time_from_sec(1));
68    }
69
70    rv = apr_shm_detach(shm);
71    if (rv != APR_SUCCESS) {
72        exit(-3);
73    }
74
75    return sent;
76}
77
78#else /* APR_HAS_SHARED_MEMORY */
79
80int main(void)
81{
82    /* Just return, this program will never be launched, so there is no
83     * reason to print a message.
84     */
85    return 0;
86}
87
88#endif /* APR_HAS_SHARED_MEMORY */
89
90