| /* 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 "apr_portable.h" |
| |
| struct apr_shm_t { |
| apr_pool_t *pool; |
| void *memblock; |
| }; |
| |
| APR_DECLARE(apr_status_t) apr_shm_create(apr_shm_t **m, |
| apr_size_t reqsize, |
| const char *filename, |
| apr_pool_t *pool) |
| { |
| int rc; |
| apr_shm_t *newm = (apr_shm_t *)apr_palloc(pool, sizeof(apr_shm_t)); |
| char *name = NULL; |
| ULONG flags = PAG_COMMIT|PAG_READ|PAG_WRITE; |
| |
| newm->pool = pool; |
| |
| if (filename) { |
| name = apr_pstrcat(pool, "\\SHAREMEM\\", filename, NULL); |
| } |
| |
| if (name == NULL) { |
| flags |= OBJ_GETTABLE; |
| } |
| |
| rc = DosAllocSharedMem(&(newm->memblock), name, reqsize, flags); |
| |
| if (rc) { |
| return APR_FROM_OS_ERROR(rc); |
| } |
| |
| *m = newm; |
| return APR_SUCCESS; |
| } |
| |
| APR_DECLARE(apr_status_t) apr_shm_create_ex(apr_shm_t **m, |
| apr_size_t reqsize, |
| const char *filename, |
| apr_pool_t *p, |
| apr_int32_t flags) |
| { |
| return apr_shm_create(m, reqsize, filename, p); |
| } |
| |
| APR_DECLARE(apr_status_t) apr_shm_destroy(apr_shm_t *m) |
| { |
| DosFreeMem(m->memblock); |
| return APR_SUCCESS; |
| } |
| |
| APR_DECLARE(apr_status_t) apr_shm_remove(const char *filename, |
| apr_pool_t *pool) |
| { |
| return APR_ENOTIMPL; |
| } |
| |
| APR_DECLARE(apr_status_t) apr_shm_delete(apr_shm_t *m) |
| { |
| return APR_ENOTIMPL; |
| } |
| |
| APR_DECLARE(apr_status_t) apr_shm_attach(apr_shm_t **m, |
| const char *filename, |
| apr_pool_t *pool) |
| { |
| int rc; |
| apr_shm_t *newm = (apr_shm_t *)apr_palloc(pool, sizeof(apr_shm_t)); |
| char *name = NULL; |
| ULONG flags = PAG_READ|PAG_WRITE; |
| |
| newm->pool = pool; |
| name = apr_pstrcat(pool, "\\SHAREMEM\\", filename, NULL); |
| |
| rc = DosGetNamedSharedMem(&(newm->memblock), name, flags); |
| |
| if (rc) { |
| return APR_FROM_OS_ERROR(rc); |
| } |
| |
| *m = newm; |
| return APR_SUCCESS; |
| } |
| |
| APR_DECLARE(apr_status_t) apr_shm_attach_ex(apr_shm_t **m, |
| const char *filename, |
| apr_pool_t *pool, |
| apr_int32_t flags) |
| { |
| return apr_shm_attach(m, filename, pool); |
| } |
| |
| APR_DECLARE(apr_status_t) apr_shm_detach(apr_shm_t *m) |
| { |
| int rc = 0; |
| |
| if (m->memblock) { |
| rc = DosFreeMem(m->memblock); |
| } |
| |
| return APR_FROM_OS_ERROR(rc); |
| } |
| |
| 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) |
| { |
| ULONG flags, size = 0x1000000; |
| DosQueryMem(m->memblock, &size, &flags); |
| return size; |
| } |
| |
| APR_PERMS_SET_ENOTIMPL(shm) |
| |
| APR_POOL_IMPLEMENT_ACCESSOR(shm) |
| |
| APR_DECLARE(apr_status_t) apr_os_shm_get(apr_os_shm_t *osshm, |
| apr_shm_t *shm) |
| { |
| *osshm = shm->memblock; |
| return APR_SUCCESS; |
| } |
| |
| APR_DECLARE(apr_status_t) apr_os_shm_put(apr_shm_t **m, |
| apr_os_shm_t *osshm, |
| apr_pool_t *pool) |
| { |
| int rc; |
| apr_shm_t *newm = (apr_shm_t *)apr_palloc(pool, sizeof(apr_shm_t)); |
| ULONG flags = PAG_COMMIT|PAG_READ|PAG_WRITE; |
| |
| newm->pool = pool; |
| |
| rc = DosGetSharedMem(&(newm->memblock), flags); |
| |
| if (rc) { |
| return APR_FROM_OS_ERROR(rc); |
| } |
| |
| *m = newm; |
| return APR_SUCCESS; |
| } |
| |