diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-21 11:54:28 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-21 11:54:28 +0000 |
commit | e6918187568dbd01842d8d1d2c808ce16a894239 (patch) | |
tree | 64f88b554b444a49f656b6c656111a145cbbaa28 /src/msg/async/dpdk/align.h | |
parent | Initial commit. (diff) | |
download | ceph-e6918187568dbd01842d8d1d2c808ce16a894239.tar.xz ceph-e6918187568dbd01842d8d1d2c808ce16a894239.zip |
Adding upstream version 18.2.2.upstream/18.2.2
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/msg/async/dpdk/align.h')
-rw-r--r-- | src/msg/async/dpdk/align.h | 50 |
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 000000000..3b48f7899 --- /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_ */ |