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-rw-r--r--shmem/os2/shm.c168
1 files changed, 168 insertions, 0 deletions
diff --git a/shmem/os2/shm.c b/shmem/os2/shm.c
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index 0000000..091fe51
--- /dev/null
+++ b/shmem/os2/shm.c
@@ -0,0 +1,168 @@
+/* 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_OS2_STATUS(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;
+}
+