binary log improvements

libs/main/io_devices/pibinarylog.h

@@ -76,6 +76,7 @@ public:
 	//! @brief Struct contains position, ID and timestamp of record in file
 	struct PIP_EXPORT BinLogIndex {
 		int id;
+		int data_size;
 		llong pos;
 		PISystemTime timestamp;
 	};
@@ -236,6 +237,9 @@ public:
 	//! Return if current binlog file is indexed
 	bool isIndexed() {return is_indexed;}
 
+	//! Find nearest record of time \"time\". Returns -1 if not indexed or time less than first record
+	int posForTime(const PISystemTime & time);
+
 	//! Go to record #index
 	void seekTo(int rindex);