1 files changed, 118 insertions, 0 deletions
diff --git a/cpp/src/qpid/asyncStore/jrnl2/RecordHeader.cpp b/cpp/src/qpid/asyncStore/jrnl2/RecordHeader.cpp
new file mode 100644
index 0000000000..3317eb8438
--- /dev/null
+++ b/cpp/src/qpid/asyncStore/jrnl2/RecordHeader.cpp
@@ -0,0 +1,118 @@
+/*
+ * 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.
+ */
+
+/**
+ * \file RecordHeader.cpp
+ */
+
+#include "RecordHeader.h"
+
+#include "Configuration.h"
+
+namespace qpid {
+namespace asyncStore {
+namespace jrnl2 {
+
+RecordHeader::RecordHeader() :
+        m_magic(0),
+        m_version(0),
+        m_bigEndianFlag(0),
+        m_flags(0),
+        m_recordId(0)
+{}
+
+RecordHeader::RecordHeader(const uint32_t magic,
+                           const uint8_t version,
+                           const uint64_t recordId,
+                           const bool overwriteIndicator) :
+        m_magic(magic),
+        m_version(version),
+        m_bigEndianFlag(Configuration::s_endianValue),
+        m_flags(overwriteIndicator ? HDR_OVERWRITE_INDICATOR_MASK : 0),
+        m_recordId(recordId)
+{}
+
+RecordHeader::RecordHeader(const RecordHeader& rh) :
+        m_magic(rh.m_magic),
+        m_version(rh.m_version),
+        m_bigEndianFlag(rh.m_bigEndianFlag),
+        m_flags(rh.m_flags),
+        m_recordId(rh.m_recordId)
+{}
+
+RecordHeader::~RecordHeader()
+{}
+
+void
+RecordHeader::copy(const RecordHeader& rh)
+{
+    m_magic = rh.m_magic;
+    m_version = rh.m_version;
+    m_bigEndianFlag = rh.m_bigEndianFlag;
+    m_flags = rh.m_flags;
+    m_recordId = rh.m_recordId;
+}
+
+void
+RecordHeader::reset()
+{
+    m_magic = 0;
+    m_version = 0;
+    m_bigEndianFlag = 0;
+    m_flags = 0;
+    m_recordId = 0;
+}
+
+bool
+RecordHeader::getOverwriteIndicator() const
+{
+    return m_flags & HDR_OVERWRITE_INDICATOR_MASK;
+}
+
+void
+RecordHeader::setOverwriteIndicator(const bool owi)
+{
+    m_flags = owi ?
+              m_flags | HDR_OVERWRITE_INDICATOR_MASK :
+              m_flags & (~HDR_OVERWRITE_INDICATOR_MASK);
+}
+
+//static
+uint64_t
+RecordHeader::getHeaderSize()
+{
+    return static_cast<uint64_t>(sizeof(RecordHeader));
+}
+
+uint32_t
+RecordHeader::getCheckSum(uint32_t initialValue) const
+{
+    uint32_t cs = initialValue;
+    for (unsigned char* p = (unsigned char*)this;
+                        p < (unsigned char*)this + getHeaderSize() + getBodySize();
+                        p++) {
+        cs ^= (uint32_t)(*p);
+        bool carry = cs & uint32_t(0x80000000);
+        cs <<= 1;
+        if (carry) cs++;
+    }
+    return cs;
+}
+
+}}} // namespace qpid::asyncStore::jrnl2