| /* 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_general.h" |
| #include "apr_shm.h" |
| #include "apr_errno.h" |
| #include "apr_lib.h" |
| #include "apr_strings.h" |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <kernel/OS.h> |
| #include "apr_portable.h" |
| |
| struct apr_shm_t { |
| apr_pool_t *pool; |
| void *memblock; |
| void *ptr; |
| apr_size_t reqsize; |
| apr_size_t avail; |
| area_id aid; |
| }; |
| |
| APR_DECLARE(apr_status_t) apr_shm_create(apr_shm_t **m, |
| apr_size_t reqsize, |
| const char *filename, |
| apr_pool_t *p) |
| { |
| apr_size_t pagesize; |
| area_id newid; |
| char *addr; |
| char shname[B_OS_NAME_LENGTH]; |
| |
| (*m) = (apr_shm_t *)apr_pcalloc(p, sizeof(apr_shm_t)); |
| /* we MUST allocate in pages, so calculate how big an area we need... */ |
| pagesize = ((reqsize + B_PAGE_SIZE - 1) / B_PAGE_SIZE) * B_PAGE_SIZE; |
| |
| if (!filename) { |
| int num = 0; |
| snprintf(shname, B_OS_NAME_LENGTH, "apr_shmem_%ld", find_thread(NULL)); |
| while (find_area(shname) >= 0) |
| snprintf(shname, B_OS_NAME_LENGTH, "apr_shmem_%ld_%d", |
| find_thread(NULL), num++); |
| } |
| newid = create_area(filename ? filename : shname, |
| (void*)&addr, B_ANY_ADDRESS, |
| pagesize, B_LAZY_LOCK, B_READ_AREA|B_WRITE_AREA); |
| |
| if (newid < 0) |
| return errno; |
| |
| (*m)->pool = p; |
| (*m)->aid = newid; |
| (*m)->memblock = addr; |
| (*m)->ptr = (void*)addr; |
| (*m)->avail = pagesize; /* record how big an area we actually created... */ |
| (*m)->reqsize = reqsize; |
| |
| return APR_SUCCESS; |
| } |
| |
| APR_DECLARE(apr_status_t) apr_shm_destroy(apr_shm_t *m) |
| { |
| delete_area(m->aid); |
| m->avail = 0; |
| m->memblock = NULL; |
| return APR_SUCCESS; |
| } |
| |
| APR_DECLARE(apr_status_t) apr_shm_remove(const char *filename, |
| apr_pool_t *pool) |
| { |
| area_id deleteme = find_area(filename); |
| |
| if (deleteme == B_NAME_NOT_FOUND) |
| return APR_EINVAL; |
| |
| delete_area(deleteme); |
| return APR_SUCCESS; |
| } |
| |
| APR_DECLARE(apr_status_t) apr_shm_attach(apr_shm_t **m, |
| const char *filename, |
| apr_pool_t *pool) |
| { |
| area_info ai; |
| thread_info ti; |
| apr_shm_t *new_m; |
| area_id deleteme = find_area(filename); |
| |
| if (deleteme == B_NAME_NOT_FOUND) |
| return APR_EINVAL; |
| |
| new_m = (apr_shm_t*)apr_palloc(pool, sizeof(apr_shm_t*)); |
| if (new_m == NULL) |
| return APR_ENOMEM; |
| new_m->pool = pool; |
| |
| get_area_info(deleteme, &ai); |
| get_thread_info(find_thread(NULL), &ti); |
| |
| if (ti.team != ai.team) { |
| area_id narea; |
| |
| narea = clone_area(ai.name, &(ai.address), B_CLONE_ADDRESS, |
| B_READ_AREA|B_WRITE_AREA, ai.area); |
| |
| if (narea < B_OK) |
| return narea; |
| |
| get_area_info(narea, &ai); |
| new_m->aid = narea; |
| new_m->memblock = ai.address; |
| new_m->ptr = (void*)ai.address; |
| new_m->avail = ai.size; |
| new_m->reqsize = ai.size; |
| } |
| |
| (*m) = new_m; |
| |
| return APR_SUCCESS; |
| } |
| |
| APR_DECLARE(apr_status_t) apr_shm_detach(apr_shm_t *m) |
| { |
| delete_area(m->aid); |
| return APR_SUCCESS; |
| } |
| |
| APR_DECLARE(void *) apr_shm_baseaddr_get(const apr_shm_t *m) |
| { |
| return m->memblock; |
| } |
| |
| APR_DECLARE(apr_size_t) apr_shm_size_get(const apr_shm_t *m) |
| { |
| return m->reqsize; |
| } |
| |
| APR_POOL_IMPLEMENT_ACCESSOR(shm) |
| |
| APR_DECLARE(apr_status_t) apr_os_shm_get(apr_os_shm_t *osshm, |
| apr_shm_t *shm) |
| { |
| return APR_ENOTIMPL; |
| } |
| |
| APR_DECLARE(apr_status_t) apr_os_shm_put(apr_shm_t **m, |
| apr_os_shm_t *osshm, |
| apr_pool_t *pool) |
| { |
| return APR_ENOTIMPL; |
| } |
| |