Add PTALog class

include/object/ptalog.h

+#ifndef PTALOG_H
+#define PTALOG_H
+
+#include <stdlib.h>
+#include "driver/stdout.h"
+
+class PTALog {
+	public:
+		typedef struct {
+			uint8_t transition_id;
+		} log_entry;
+
+		log_entry log[32];
+		uint8_t log_index;
+
+		PTALog() : log_index(0) {}
+
+		void passTransition(uint8_t transition_id)
+		{
+			log[log_index].transition_id = transition_id;
+			log_index++;
+		}
+
+		void reset()
+		{
+			log_index = 0;
+		}
+
+		void startBenchmark(uint8_t id)
+		{
+			kout << "[PTA] benchmark start, id=" << dec << id << endl;
+		}
+
+		void stopBenchmark()
+		{
+			kout << "[PTA] benchmark stop" << endl;
+		}
+
+		void dump()
+		{
+			kout << "[PTA] trace, count=" << dec << log_index << endl;
+			for (uint8_t i = 0; i < log_index; i++) {
+				kout << "[PTA] transition=" << log[i].transition_id << endl;
+			}
+		}
+
+	private:
+		PTALog(const PTALog& copy);
+};
+
+#endif