/usr/include/gromacs/timing/walltime_accounting.h is in libgromacs-dev 5.1.2-1ubuntu1.
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#ifndef GMX_TIMING_WALLTIME_ACCOUNTING_H
#define GMX_TIMING_WALLTIME_ACCOUNTING_H
#include "gromacs/utility/basedefinitions.h"
#ifdef __cplusplus
extern "C" {
#endif
#if 0
}
#endif
/*! \brief
* Contains per-process and per-thread data about elapsed wall-clock
* times and integration steps performed. */
typedef struct gmx_walltime_accounting *gmx_walltime_accounting_t;
//! Constructor
gmx_walltime_accounting_t
walltime_accounting_init(int numOpenMPThreads);
//! Destructor
void
walltime_accounting_destroy(gmx_walltime_accounting_t walltime_accounting);
/*! \brief
* Record initial time stamps, e.g. at run end or counter re-initalization time
*/
void
walltime_accounting_start(gmx_walltime_accounting_t walltime_accounting);
/*! \brief
* Measure and cache the elapsed wall-clock time since
* walltime_accounting_start() */
void
walltime_accounting_end(gmx_walltime_accounting_t walltime_accounting);
/*! \brief
* Measure and return the elapsed wall-clock time since
* walltime_accounting_start() */
double
walltime_accounting_get_current_elapsed_time(gmx_walltime_accounting_t walltime_accounting);
//! Get the cached wall-clock time for this node
double
walltime_accounting_get_elapsed_time(gmx_walltime_accounting_t walltime_accounting);
//! Get the cached wall-clock time, multiplied by the number of OpenMP threads
double
walltime_accounting_get_elapsed_time_over_all_threads(gmx_walltime_accounting_t walltime_accounting);
//! Get the cached initial time stamp for this node
double
walltime_accounting_get_start_time_stamp(gmx_walltime_accounting_t walltime_accounting);
//! Get the number of integration steps done
gmx_int64_t
walltime_accounting_get_nsteps_done(gmx_walltime_accounting_t walltime_accounting);
/*! \brief Set the number of integration steps done
*
* TODO consider whether this should get done in walltime_accounting_end */
void
walltime_accounting_set_nsteps_done(gmx_walltime_accounting_t walltime_accounting,
gmx_int64_t nsteps_done);
/*! \brief
* Calls system timing routines (e.g. clock_gettime) to get the (fractional)
* number of seconds elapsed since the epoch.
*
* Resolution is implementation-dependent, but typically nanoseconds
* or microseconds. */
double gmx_gettime();
#ifdef __cplusplus
}
#endif
#endif /* GMX_TIMING_WALLTIME_ACCOUNTING_H */
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