Update from trunk r1375509 through r1450773asyncstore

git-svn-id: https://svn.apache.org/repos/asf/qpid/branches/asyncstore@1451244 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 81 insertions, 0 deletions

diff --git a/extras/dispatch/src/iovec.c b/extras/dispatch/src/iovec.c
new file mode 100644
index 0000000000..6ff6874440
--- /dev/null
+++ b/extras/dispatch/src/iovec.c
@@ -0,0 +1,81 @@
+/*
+ * 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 <qpid/dispatch/iovec.h>
+#include <qpid/dispatch/alloc.h>
+#include <string.h>
+
+#define DX_IOVEC_MAX 64
+
+struct dx_iovec_t {
+    struct iovec  iov_array[DX_IOVEC_MAX];
+    struct iovec *iov;
+    int           iov_count;
+};
+
+
+ALLOC_DECLARE(dx_iovec_t);
+ALLOC_DEFINE(dx_iovec_t);
+
+
+dx_iovec_t *dx_iovec(int vector_count)
+{
+    dx_iovec_t *iov = new_dx_iovec_t();
+    if (!iov)
+        return 0;
+
+    memset(iov, 0, sizeof(dx_iovec_t));
+
+    iov->iov_count = vector_count;
+    if (vector_count > DX_IOVEC_MAX)
+        iov->iov = (struct iovec*) malloc(sizeof(struct iovec) * vector_count);
+    else
+        iov->iov = &iov->iov_array[0];
+
+    return iov;
+}
+
+
+void dx_iovec_free(dx_iovec_t *iov)
+{
+    if (!iov)
+        return;
+
+    if (iov->iov && iov->iov != &iov->iov_array[0])
+        free(iov->iov);
+
+    free_dx_iovec_t(iov);
+}
+
+
+struct iovec *dx_iovec_array(dx_iovec_t *iov)
+{
+    if (!iov)
+        return 0;
+    return iov->iov;
+}
+
+
+int dx_iovec_count(dx_iovec_t *iov)
+{
+    if (!iov)
+        return 0;
+    return iov->iov_count;
+}
+