Add Stopwatch

1 files changed, 28 insertions, 0 deletions

diff --git a/libkms++util/stopwatch.h b/libkms++util/stopwatch.h
new file mode 100644
index 0000000..9b60fa1
--- /dev/null
+++ b/libkms++util/stopwatch.h
@@ -0,0 +1,28 @@
+#include <chrono>
+
+class Stopwatch
+{
+public:
+	void start()
+	{
+		m_start = std::chrono::steady_clock::now();
+	}
+
+	double elapsed_s() const
+	{
+		return std::chrono::duration<double>(std::chrono::steady_clock::now() - m_start).count();
+	}
+
+	double elapsed_ms() const
+	{
+		return std::chrono::duration<double, std::milli>(std::chrono::steady_clock::now() - m_start).count();
+	}
+
+	double elapsed_us() const
+	{
+		return std::chrono::duration<double, std::micro>(std::chrono::steady_clock::now() - m_start).count();
+	}
+
+private:
+	std::chrono::steady_clock::time_point m_start;
+};