145 lines
3.7 KiB
C
145 lines
3.7 KiB
C
/* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "fspr_general.h"
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#include "fspr_shm.h"
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#include "fspr_errno.h"
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#include "fspr_lib.h"
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#include "fspr_strings.h"
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#include "fspr_portable.h"
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struct fspr_shm_t {
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fspr_pool_t *pool;
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void *memblock;
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};
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APR_DECLARE(fspr_status_t) fspr_shm_create(fspr_shm_t **m,
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fspr_size_t reqsize,
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const char *filename,
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fspr_pool_t *pool)
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{
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int rc;
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fspr_shm_t *newm = (fspr_shm_t *)fspr_palloc(pool, sizeof(fspr_shm_t));
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char *name = NULL;
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ULONG flags = PAG_COMMIT|PAG_READ|PAG_WRITE;
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newm->pool = pool;
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if (filename) {
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name = fspr_pstrcat(pool, "\\SHAREMEM\\", filename, NULL);
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}
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if (name == NULL) {
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flags |= OBJ_GETTABLE;
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}
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rc = DosAllocSharedMem(&(newm->memblock), name, reqsize, flags);
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if (rc) {
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return APR_OS2_STATUS(rc);
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}
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*m = newm;
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return APR_SUCCESS;
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}
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APR_DECLARE(fspr_status_t) fspr_shm_destroy(fspr_shm_t *m)
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{
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DosFreeMem(m->memblock);
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return APR_SUCCESS;
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}
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APR_DECLARE(fspr_status_t) fspr_shm_remove(const char *filename,
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fspr_pool_t *pool)
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{
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return APR_ENOTIMPL;
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}
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APR_DECLARE(fspr_status_t) fspr_shm_attach(fspr_shm_t **m,
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const char *filename,
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fspr_pool_t *pool)
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{
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int rc;
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fspr_shm_t *newm = (fspr_shm_t *)fspr_palloc(pool, sizeof(fspr_shm_t));
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char *name = NULL;
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ULONG flags = PAG_READ|PAG_WRITE;
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newm->pool = pool;
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name = fspr_pstrcat(pool, "\\SHAREMEM\\", filename, NULL);
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rc = DosGetNamedSharedMem(&(newm->memblock), name, flags);
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if (rc) {
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return APR_FROM_OS_ERROR(rc);
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}
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*m = newm;
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return APR_SUCCESS;
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}
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APR_DECLARE(fspr_status_t) fspr_shm_detach(fspr_shm_t *m)
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{
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int rc = 0;
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if (m->memblock) {
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rc = DosFreeMem(m->memblock);
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}
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return APR_FROM_OS_ERROR(rc);
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}
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APR_DECLARE(void *) fspr_shm_baseaddr_get(const fspr_shm_t *m)
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{
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return m->memblock;
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}
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APR_DECLARE(fspr_size_t) fspr_shm_size_get(const fspr_shm_t *m)
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{
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ULONG flags, size = 0x1000000;
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DosQueryMem(m->memblock, &size, &flags);
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return size;
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}
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APR_POOL_IMPLEMENT_ACCESSOR(shm)
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APR_DECLARE(fspr_status_t) fspr_os_shm_get(fspr_os_shm_t *osshm,
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fspr_shm_t *shm)
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{
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*osshm = shm->memblock;
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return APR_SUCCESS;
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}
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APR_DECLARE(fspr_status_t) fspr_os_shm_put(fspr_shm_t **m,
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fspr_os_shm_t *osshm,
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fspr_pool_t *pool)
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{
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int rc;
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fspr_shm_t *newm = (fspr_shm_t *)fspr_palloc(pool, sizeof(fspr_shm_t));
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ULONG flags = PAG_COMMIT|PAG_READ|PAG_WRITE;
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newm->pool = pool;
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rc = DosGetSharedMem(&(newm->memblock), flags);
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if (rc) {
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return APR_FROM_OS_ERROR(rc);
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}
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*m = newm;
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return APR_SUCCESS;
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}
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