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Diffstat (limited to 'shmem/beos/shm.c')
| -rw-r--r-- | shmem/beos/shm.c | 195 |
1 files changed, 195 insertions, 0 deletions
diff --git a/shmem/beos/shm.c b/shmem/beos/shm.c new file mode 100644 index 0000000..fcd7c84 --- /dev/null +++ b/shmem/beos/shm.c @@ -0,0 +1,195 @@ +/* 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_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) +{ + 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_delete(apr_shm_t *m) +{ + if (m->filename) { + return apr_shm_remove(m->filename, m->pool); + } + else { + return APR_ENOTIMPL; + } +} + +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_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) +{ + 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_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) +{ + 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; +} + |