1 files changed, 144 insertions, 0 deletions
diff --git a/shmem/os2/shm.c b/shmem/os2/shm.c
new file mode 100644
index 0000000..340cae4
--- /dev/null
+++ b/shmem/os2/shm.c
@@ -0,0 +1,144 @@
+/* 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_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_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_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_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;
+}    
+