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/*
* Clocks, real-time and otherwise.
* Stuart Levy, slevy@ncsa.uiuc.edu
* National Center for Supercomputing Applications,
* University of Illinois 2001.
* This file is part of partiview, released under the
* Illinois Open Source License; see the file LICENSE.partiview for details.
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#include "notify.h"
#ifdef __cplusplus
extern "C" {
#endif
typedef struct sclock_ SClock;
struct sclock_ {
int seqno; /* incremented for each update */
int running;
int fwd;
int walltimed;
int continuous;
int pertick;
double speed; /* per real second, or per parent-clock unit */
double fspeed; /* per clock_tick() */
double deltatime; /* scales arg to clock_step() */
double curtime; /* now */
double basetime;
double (*wallfunc)(struct sclock_ *);
int clamped, wrapped;
double tmin, tmax; /* valid range of times */
double wrapband;
double walllasttick; /* wall-clock time of last tick */
int waswalltimed; /* was previous tick in walltimed mode? */
SClock *parent;
Notify *notify; /* list of functions to call when we change */
};
/*
* If parent is set, our time is
* curtime = clock_read(parent)*speed + basetime
* (or maybe eventually some more complicated function)
* otherwise it's
* curtime
* How to change a (non-parented) clock:
* clock_tick(clk)
* if running & walltimed, adds speed * time-since-last-tick
* if running & !walltimed, does clock_step(clk, 1)
* clock_step(clk, N)
* adds N*deltatime to curtime. ignores speed/fspeed.
* clock_set(clk, T)
* sets curtime.
*/
double wallclock_time(void);
void clock_init( SClock * );
double clock_time( SClock * );
int clock_fwd( SClock * ); /* returns +1 (fwd) or -1 (back) */
int clock_running( SClock * );
double clock_speed( SClock * );
void clock_set_time( SClock *, double newtime );
void clock_set_running( SClock *, int running );
void clock_set_fwd( SClock *, int fwd );
void clock_set_step( SClock *, double deltatime );
void clock_set_speed( SClock *, double speed );
void clock_set_timebase( SClock *, double timebase );
void clock_range_include( SClock *, double t0, double t1 );
void clock_add( SClock *, double incr );
void clock_step( SClock *, double sign );
void clock_tick( SClock * );
void clock_add_notify( SClock *, NotifyFunc func, void *arg );
void clock_remove_notify( SClock *, NotifyFunc func, void *arg );
void clock_notify( SClock * );
#ifdef __cplusplus
} /* end extern "C" */
#endif
#endif /* SCLOCK_H */