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 */