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/rocksdb/db/log_format.h | |
parent | Initial commit. (diff) | |
download | ceph-b26c4052f3542036551aa9dec9caa4226e456195.tar.xz ceph-b26c4052f3542036551aa9dec9caa4226e456195.zip |
Adding upstream version 18.2.2.upstream/18.2.2
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | src/rocksdb/db/log_format.h | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/src/rocksdb/db/log_format.h b/src/rocksdb/db/log_format.h new file mode 100644 index 000000000..d397372f4 --- /dev/null +++ b/src/rocksdb/db/log_format.h @@ -0,0 +1,51 @@ +// Copyright (c) 2011-present, Facebook, Inc. All rights reserved. +// This source code is licensed under both the GPLv2 (found in the +// COPYING file in the root directory) and Apache 2.0 License +// (found in the LICENSE.Apache file in the root directory). +// +// Copyright (c) 2011 The LevelDB Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. See the AUTHORS file for names of contributors. +// +// Log format information shared by reader and writer. +// See ../doc/log_format.txt for more detail. + +#pragma once + +#include "rocksdb/rocksdb_namespace.h" + +namespace ROCKSDB_NAMESPACE { +namespace log { + +enum RecordType { + // Zero is reserved for preallocated files + kZeroType = 0, + kFullType = 1, + + // For fragments + kFirstType = 2, + kMiddleType = 3, + kLastType = 4, + + // For recycled log files + kRecyclableFullType = 5, + kRecyclableFirstType = 6, + kRecyclableMiddleType = 7, + kRecyclableLastType = 8, + + // Compression Type + kSetCompressionType = 9, +}; +static const int kMaxRecordType = kSetCompressionType; + +static const unsigned int kBlockSize = 32768; + +// Header is checksum (4 bytes), length (2 bytes), type (1 byte) +static const int kHeaderSize = 4 + 2 + 1; + +// Recyclable header is checksum (4 bytes), length (2 bytes), type (1 byte), +// log number (4 bytes). +static const int kRecyclableHeaderSize = 4 + 2 + 1 + 4; + +} // namespace log +} // namespace ROCKSDB_NAMESPACE |