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 #ifndef SHM_H 18 #define SHM_H 19 20 #include "apr.h" 21 #include "apr_private.h" 22 #include "apr_general.h" 23 #include "apr_lib.h" 24 #include "apr_shm.h" 25 #include "apr_pools.h" 26 #include "apr_file_io.h" 27 #include "apr_network_io.h" 28 #include "apr_portable.h" 29 30 #if APR_HAVE_UNISTD_H 31 #include <unistd.h> 32 #endif 33 #ifdef HAVE_SYS_MMAN_H 34 #include <sys/mman.h> 35 #endif 36 #ifdef HAVE_SYS_IPC_H 37 #include <sys/ipc.h> 38 #endif 39 #ifdef HAVE_SYS_MUTEX_H 40 #include <sys/mutex.h> 41 #endif 42 #ifdef HAVE_SYS_SHM_H 43 #include <sys/shm.h> 44 #endif 45 #if !defined(SHM_R) 46 #define SHM_R 0400 47 #endif 48 #if !defined(SHM_W) 49 #define SHM_W 0200 50 #endif 51 #ifdef HAVE_SYS_FILE_H 52 #include <sys/file.h> 53 #endif 54 55 /* Not all systems seem to have MAP_FAILED defined, but it should always 56 * just be (void *)-1. */ 57 #ifndef MAP_FAILED 58 #define MAP_FAILED ((void *)-1) 59 #endif 60 61 struct apr_shm_t { 62 apr_pool_t *pool; 63 void *base; /* base real address */ 64 void *usable; /* base usable address */ 65 apr_size_t reqsize; /* requested segment size */ 66 apr_size_t realsize; /* actual segment size */ 67 const char *filename; /* NULL if anonymous */ 68 #if APR_USE_SHMEM_SHMGET || APR_USE_SHMEM_SHMGET_ANON 69 int shmid; /* shmem ID returned from shmget() */ 70 #endif 71 }; 72 73 #endif /* SHM_H */ 74