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diff --git a/src/main/include/log4cxx/rolling/sizebasedtriggeringpolicy.h b/src/main/include/log4cxx/rolling/sizebasedtriggeringpolicy.h
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+++ b/src/main/include/log4cxx/rolling/sizebasedtriggeringpolicy.h
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+/*
+ * 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.
+ */
+
+#if !defined(_LOG4CXX_ROLLING_SIZE_BASED_TRIGGERING_POLICY_H)
+#define _LOG4CXX_ROLLING_SIZE_BASED_TRIGGERING_POLICY_H
+
+#include <log4cxx/rolling/triggeringpolicy.h>
+
+namespace log4cxx {
+
+    class File;
+
+    namespace helpers {
+      class Pool;
+    }
+
+    namespace rolling {
+
+        /**
+         * SizeBasedTriggeringPolicy looks at size of the file being
+         * currently written to.
+         *
+         * 
+         *
+         */
+        class LOG4CXX_EXPORT SizeBasedTriggeringPolicy : public TriggeringPolicy {
+          DECLARE_LOG4CXX_OBJECT(SizeBasedTriggeringPolicy)
+          BEGIN_LOG4CXX_CAST_MAP()
+                  LOG4CXX_CAST_ENTRY(SizeBasedTriggeringPolicy)
+                  LOG4CXX_CAST_ENTRY_CHAIN(TriggeringPolicy)
+          END_LOG4CXX_CAST_MAP()
+
+        protected:
+          size_t maxFileSize;
+
+        public:
+            SizeBasedTriggeringPolicy();
+            /**
+             * Determines if a rollover may be appropriate at this time.  If
+             * true is returned, RolloverPolicy.rollover will be called but it
+             * can determine that a rollover is not warranted.
+             *
+             * @param appender A reference to the appender.
+             * @param event A reference to the currently event.
+             * @param filename The filename for the currently active log file.
+             * @param fileLength Length of the file in bytes.
+             * @return true if a rollover should occur.
+             */
+            virtual bool isTriggeringEvent(
+              Appender* appender,
+              const log4cxx::spi::LoggingEventPtr& event,
+              const LogString& filename,
+              size_t fileLength);
+
+            size_t getMaxFileSize();
+
+            void setMaxFileSize(size_t l);
+
+            void activateOptions(log4cxx::helpers::Pool&);
+            void setOption(const LogString& option, const LogString& value);
+        };
+
+        LOG4CXX_PTR_DEF(SizeBasedTriggeringPolicy);
+
+    }
+}
+#endif
+