1 files changed, 50 insertions, 0 deletions
diff --git a/src/msg/async/dpdk/align.h b/src/msg/async/dpdk/align.h
new file mode 100644
index 00000000..3b48f789
--- /dev/null
+++ b/src/msg/async/dpdk/align.h
@@ -0,0 +1,50 @@
+/*
+ * This file is open source software, licensed to you under the terms
+ * of the Apache License, Version 2.0 (the "License").  See the NOTICE file
+ * distributed with this work for additional information regarding copyright
+ * ownership.  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.
+ */
+/*
+ * Copyright (C) 2014 Cloudius Systems, Ltd.
+ */
+
+#ifndef CEPH_MSG_DPDK_ALIGN_HH_
+#define CEPH_MSG_DPDK_ALIGN_HH_
+
+#include <cstdint>
+#include <cstdlib>
+
+template <typename T>
+inline constexpr T align_up(T v, T align) {
+  return (v + align - 1) & ~(align - 1);
+}
+
+template <typename T>
+inline constexpr T* align_up(T* v, size_t align) {
+  static_assert(sizeof(T) == 1, "align byte pointers only");
+  return reinterpret_cast<T*>(align_up(reinterpret_cast<uintptr_t>(v), align));
+}
+
+template <typename T>
+inline constexpr T align_down(T v, T align) {
+  return v & ~(align - 1);
+}
+
+template <typename T>
+inline constexpr T* align_down(T* v, size_t align) {
+  static_assert(sizeof(T) == 1, "align byte pointers only");
+  return reinterpret_cast<T*>(align_down(reinterpret_cast<uintptr_t>(v), align));
+}
+
+#endif /* CEPH_MSG_DPDK_ALIGN_HH_ */