Add counter class

The same as used in first project task - DataStructersCompatison

Unfortunetly it breaks the project from working on Linux and as MinGW on Windows doesn't support random_device the only way to compile it is to use VisualStudio TTvTT

Author: baatochan

CMakeLists.txt

@@ -7,5 +7,5 @@ if (CMAKE_BUILD_TYPE MATCHES RELEASE)
 	set(CMAKE_EXE_LINKER_FLAGS "-static-libgcc -static-libstdc++")
 endif (CMAKE_BUILD_TYPE MATCHES RELEASE)
 
-set(SOURCE_FILES main.cpp Program.cpp Graph.cpp DirectedGraph.cpp UndirectedGraph.cpp MinHeapElement.cpp)
+set(SOURCE_FILES main.cpp Program.cpp Graph.cpp DirectedGraph.cpp UndirectedGraph.cpp MinHeapElement.cpp Counter.cpp)
 add_executable(GraphRepresentationsAndAlgorithmsComparison ${SOURCE_FILES})

Counter.cpp

@@ -0,0 +1,24 @@
+//
+// Created by barto on 18.04.17.
+//
+
+#include "Counter.h"
+
+// public
+
+void Counter::startCounter() {
+	LARGE_INTEGER li;
+	if (!QueryPerformanceFrequency(&li))
+		std::cout << "QueryPerformanceFrequency failed!\n";
+
+	PCFreq = double(li.QuadPart) / 1000000.0;
+
+	QueryPerformanceCounter(&li);
+	CounterStart = li.QuadPart;
+}
+
+double Counter::getCounter() {
+	LARGE_INTEGER li;
+	QueryPerformanceCounter(&li);
+	return double(li.QuadPart - CounterStart) / PCFreq;
+}

Counter.h

@@ -0,0 +1,31 @@
+//
+// Created by barto on 18.04.17.
+//
+// Code written by Ramonster.
+// It was said in task description that we can use code from that link.
+//
+
+#ifndef DATASTRUCTURESSDIZO_COUNTER_H
+#define DATASTRUCTURESSDIZO_COUNTER_H
+
+
+#include <windows.h>
+#include <iostream>
+
+class Counter {
+private:
+
+	double PCFreq = 0.0;
+
+	__int64 CounterStart = 0;
+
+public:
+
+	void startCounter();
+
+	double getCounter();
+
+};
+
+
+#endif //DATASTRUCTURESSDIZO_COUNTER_H