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author | Robert Gemmell <robbie@apache.org> | 2015-06-25 10:22:51 +0000 |
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committer | Robert Gemmell <robbie@apache.org> | 2015-06-25 10:22:51 +0000 |
commit | 32ae758bc2e8fd962b66a4ab6341b14009f1907e (patch) | |
tree | 2f4d8174813284a6ea58bb6b7f6520aa92287476 /qpid/cpp/src/qpid/store/ms-clfs/Log.h | |
parent | 116d91ad7825a98af36a869fc751206fbce0c59f (diff) | |
parent | f7e896076143de4572b4f1f67ef0765125f2498d (diff) | |
download | qpid-python-32ae758bc2e8fd962b66a4ab6341b14009f1907e.tar.gz |
NO-JIRA: create branch for qpid-cpp 0.34 RC process
git-svn-id: https://svn.apache.org/repos/asf/qpid/branches/qpid-cpp-0.34-rc@1687469 13f79535-47bb-0310-9956-ffa450edef68
Diffstat (limited to 'qpid/cpp/src/qpid/store/ms-clfs/Log.h')
-rw-r--r-- | qpid/cpp/src/qpid/store/ms-clfs/Log.h | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/qpid/cpp/src/qpid/store/ms-clfs/Log.h b/qpid/cpp/src/qpid/store/ms-clfs/Log.h new file mode 100644 index 0000000000..2f7eb6cada --- /dev/null +++ b/qpid/cpp/src/qpid/store/ms-clfs/Log.h @@ -0,0 +1,78 @@ +#ifndef QPID_STORE_MSCLFS_LOG_H +#define QPID_STORE_MSCLFS_LOG_H + +/* + * + * 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 <string> +#include <windows.h> +#include <clfsw32.h> +#include <qpid/sys/IntegerTypes.h> + +namespace qpid { +namespace store { +namespace ms_clfs { + +/** + * @class Log + * + * Represents a CLFS-housed log. + */ +class Log { + +protected: + HANDLE handle; + ULONGLONG containerSize; + std::string logPath; + PVOID marshal; + + // Give subclasses a chance to initialize a new log. Called after a new + // log is created, initial set of containers is added, and marshalling + // area is allocated. + virtual void initialize() {} + +public: + struct TuningParameters { + size_t containerSize; + unsigned short containers; + unsigned short shrinkPct; + uint32_t maxWriteBuffers; + }; + + Log() : handle(INVALID_HANDLE_VALUE), containerSize(0), marshal(0) {} + virtual ~Log(); + + void open(const std::string& path, const TuningParameters& params); + + virtual uint32_t marshallingBufferSize(); + + CLFS_LSN write(void* entry, uint32_t length, CLFS_LSN* prev = 0); + + // Get the current base LSN of the log. + CLFS_LSN getBase(); + + // Move the log tail to the indicated LSN. + void moveTail(const CLFS_LSN& oldest); +}; + +}}} // namespace qpid::store::ms_clfs + +#endif /* QPID_STORE_MSCLFS_LOG_H */ |