1 files changed, 79 insertions, 0 deletions
diff --git a/include/gudhi/Clock.h b/include/gudhi/Clock.h
new file mode 100644
index 00000000..04c6ffb9
--- /dev/null
+++ b/include/gudhi/Clock.h
@@ -0,0 +1,79 @@
+/*    This file is part of the Gudhi Library. The Gudhi library 
+ *    (Geometric Understanding in Higher Dimensions) is a generic C++ 
+ *    library for computational topology.
+ *
+ *    Author(s):       David Salinas
+ *
+ *    Copyright (C) 2014  INRIA Sophia Antipolis-Mediterranee (France)
+ *
+ *    This program is free software: you can redistribute it and/or modify
+ *    it under the terms of the GNU General Public License as published by
+ *    the Free Software Foundation, either version 3 of the License, or
+ *    (at your option) any later version.
+ *
+ *    This program is distributed in the hope that it will be useful,
+ *    but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *    GNU General Public License for more details.
+ *
+ *    You should have received a copy of the GNU General Public License
+ *    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef CLOCK_H_
+#define CLOCK_H_
+
+#include <boost/date_time/posix_time/posix_time.hpp>
+
+#include <string>
+
+class Clock {
+ public:
+  Clock() : end_called(false) {
+    startTime = boost::posix_time::microsec_clock::local_time();
+  }
+
+  Clock(const std::string& msg_) {
+    end_called = false;
+    begin();
+    msg = msg_;
+  }
+
+  void begin() const {
+    end_called = false;
+    startTime = boost::posix_time::microsec_clock::local_time();
+  }
+
+  void end() const {
+    end_called = true;
+    endTime = boost::posix_time::microsec_clock::local_time();
+  }
+
+  void print() const {
+    std::cout << *this << std::endl;
+  }
+
+  friend std::ostream& operator<<(std::ostream& stream, const Clock& clock) {
+    if (!clock.end_called)
+      clock.end();
+
+    if (!clock.end_called) {
+      stream << "end not called";
+    } else {
+      stream << clock.msg << ":" << clock.num_seconds() << "s";
+    }
+    return stream;
+  }
+
+  double num_seconds() const {
+    if (!end_called) return -1;
+    return (endTime - startTime).total_milliseconds() / 1000.;
+  }
+
+ private:
+  mutable boost::posix_time::ptime startTime, endTime;
+  mutable bool end_called;
+  std::string msg;
+};
+
+#endif  // CLOCK_H_