Timer.hpp

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#ifndef wali_util_TIME_GUARD
#define wali_util_TIME_GUARD

#include <iosfwd>
#include <string>
#include <iostream>
#include <cstdlib>
#include <cstdio>
#include "wali/Common.hpp"
#include "wali/Printable.hpp"
#ifndef _WIN32
#   include <sys/times.h>
#else
#   include <time.h>
#endif

/*
 * @author Ben Liblit (NAK - I think)
 *
 * This only works on Linux (maybe other OSes that
 * support /proc filesystem)
 */
namespace wali {

  namespace util {

    class Timer : public wali::Printable {
      public:
        static bool measureAndReport;
        static const long TIMER_CLK_TICK;

        Timer(const std::string &task, std::ostream& os=*waliErr);

        ~Timer();

        double elapsed() const;

        virtual std::ostream& print( std::ostream& out ) const;

        static std::ostream& printTime( std::ostream& out, clock_t clk );

      private:
        const clock_t start;
#ifndef _WIN32
        struct tms st_tms;
#endif
        const std::string task;
        std::ostream& os; //!< for reporting

    };

  } // namespace util

} // namespace wali


#endif // wali_util_TIME_GUARD