/usr/include/gecode/support/timer.hpp is in libgecode-dev 3.7.1-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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/*
* Main authors:
* Mikael Lagerkvist <lagerkvist@gecode.org>
*
* Copyright:
* Mikael Lagerkvist, 2009
*
* Last modified:
* $Date: 2010-07-14 17:46:18 +0200 (Wed, 14 Jul 2010) $ by $Author: schulte $
* $Revision: 11192 $
*
* This file is part of Gecode, the generic constraint
* development environment:
* http://www.gecode.org
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
*/
#ifdef GECODE_USE_GETTIMEOFDAY
#include <sys/time.h>
#endif
#ifdef GECODE_USE_CLOCK
#include <ctime>
#endif
namespace Gecode { namespace Support {
/** \brief %Timer
*
* This class represents a best-effort at measuring wall-clock time
* in milliseconds.
*
* \ingroup FuncSupport
*/
class GECODE_SUPPORT_EXPORT Timer {
private:
#if defined(GECODE_USE_GETTIMEOFDAY)
timeval t0; ///< Start time
#elif defined(GECODE_USE_CLOCK)
clock_t t0; ///< Start time
#endif
public:
/// Start timer
void start(void);
/// Get time since start of timer
double stop(void);
};
inline void
Timer::start(void) {
#if defined(GECODE_USE_GETTIMEOFDAY)
if (gettimeofday(&t0, NULL))
throw OperatingSystemError("Timer::start[gettimeofday]");
#elif defined(GECODE_USE_CLOCK)
t0 = clock();
#endif
}
inline double
Timer::stop(void) {
#if defined(GECODE_USE_GETTIMEOFDAY)
timeval t1, t;
if (gettimeofday(&t1, NULL))
throw OperatingSystemError("Timer::stop[gettimeofday]");
// t = t1 - t2
t.tv_sec = t1.tv_sec - t0.tv_sec;
t.tv_usec = t1.tv_usec - t0.tv_usec;
if (t.tv_usec < 0) {
t.tv_sec--;
t.tv_usec += 1000000;
}
return (static_cast<double>(t.tv_sec) * 1000.0) +
(static_cast<double>(t.tv_usec)/1000.0);
#elif defined(GECODE_USE_CLOCK)
return (static_cast<double>(clock()-t0) / CLOCKS_PER_SEC) * 1000.0;
#endif
}
}}
// STATISTICS: support-any
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