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/* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "apr_shm.h"
#include "apr_errno.h"
#include "apr_general.h"
#include "apr_lib.h"
#include "apr_strings.h"
#include "apr_time.h"
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#if APR_HAVE_UNISTD_H
#include <unistd.h>
#endif
#if APR_HAS_SHARED_MEMORY
typedef struct mbox {
char msg[1024];
int msgavail;
} mbox;
mbox *boxes;
#define N_BOXES 10
#define SHARED_SIZE (apr_size_t)(N_BOXES * sizeof(mbox))
#define SHARED_FILENAME "/tmp/apr.testshm.shm"
static void msgwait(int sleep_sec, int first_box, int last_box)
{
int i;
apr_time_t start = apr_time_now();
apr_interval_time_t sleep_duration = apr_time_from_sec(sleep_sec);
while (apr_time_now() - start < sleep_duration) {
for (i = first_box; i < last_box; i++) {
if (boxes[i].msgavail) {
fprintf(stdout, "Consumer: received a message in box %d, message was: %s\n",
i, boxes[i].msg);
boxes[i].msgavail = 0; /* reset back to 0 */
}
}
apr_sleep(apr_time_from_sec(1));
}
fprintf(stdout, "Consumer: done waiting on mailboxes...\n");
}
int main(void)
{
apr_status_t rv;
apr_pool_t *pool;
apr_shm_t *shm;
char errmsg[200];
apr_initialize();
printf("APR Shared Memory Test: CONSUMER\n");
printf("Initializing the pool............................");
if (apr_pool_create(&pool, NULL) != APR_SUCCESS) {
printf("could not initialize pool\n");
exit(-1);
}
printf("OK\n");
printf("Consumer attaching to name-based shared memory....");
rv = apr_shm_attach(&shm, SHARED_FILENAME, pool);
if (rv != APR_SUCCESS) {
printf("Consumer unable to attach to name-based shared memory "
"segment: [%d] %s \n", rv,
apr_strerror(rv, errmsg, sizeof(errmsg)));
exit(-2);
}
printf("OK\n");
boxes = apr_shm_baseaddr_get(shm);
/* consume messages on all of the boxes */
msgwait(30, 0, N_BOXES); /* wait for 30 seconds for messages */
printf("Consumer detaching from name-based shared memory....");
rv = apr_shm_detach(shm);
if (rv != APR_SUCCESS) {
printf("Consumer unable to detach from name-based shared memory "
"segment: [%d] %s \n", rv,
apr_strerror(rv, errmsg, sizeof(errmsg)));
exit(-3);
}
printf("OK\n");
return 0;
}
#else /* APR_HAS_SHARED_MEMORY */
int main(void)
{
printf("APR SHMEM test not run!\n");
printf("shmem is not supported on this platform\n");
return -1;
}
#endif /* APR_HAS_SHARED_MEMORY */
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