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