root / man / man3 / HPL_ptimer.3 @ 1
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| 1 | 1 | equemene | .TH HPL_ptimer 3 "September 10, 2008" "HPL 2.0" "HPL Library Functions" |
|---|---|---|---|
| 2 | 1 | equemene | .SH NAME |
| 3 | 1 | equemene | HPL_ptimer \- Timer facility. |
| 4 | 1 | equemene | .SH SYNOPSIS |
| 5 | 1 | equemene | \fB\&#include "hpl.h"\fR |
| 6 | 1 | equemene | |
| 7 | 1 | equemene | \fB\&void\fR |
| 8 | 1 | equemene | \fB\&HPL_ptimer(\fR |
| 9 | 1 | equemene | \fB\&const int\fR |
| 10 | 1 | equemene | \fI\&I\fR |
| 11 | 1 | equemene | \fB\&);\fR |
| 12 | 1 | equemene | .SH DESCRIPTION |
| 13 | 1 | equemene | \fB\&HPL_ptimer\fR |
| 14 | 1 | equemene | provides a "stopwatch" functionality cpu/wall timer in |
| 15 | 1 | equemene | seconds. Up to 64 separate timers can be functioning at once. The |
| 16 | 1 | equemene | first call starts the timer, and the second stops it. This routine |
| 17 | 1 | equemene | can be disenabled by calling HPL_ptimer_disable(), so that calls to |
| 18 | 1 | equemene | the timer are ignored. This feature can be used to make sure certain |
| 19 | 1 | equemene | sections of code do not affect timings, even if they call routines |
| 20 | 1 | equemene | which have HPL_ptimer calls in them. HPL_ptimer_enable() will enable |
| 21 | 1 | equemene | the timer functionality. One can retrieve the current value of a |
| 22 | 1 | equemene | timer by calling |
| 23 | 1 | equemene | |
| 24 | 1 | equemene | t0 = HPL_ptimer_inquire( HPL_WALL_TIME | HPL_CPU_TIME, I ) |
| 25 | 1 | equemene | |
| 26 | 1 | equemene | where I is the timer index in [0..64). To inititialize the timer |
| 27 | 1 | equemene | functionality, one must have called HPL_ptimer_boot() prior to any of |
| 28 | 1 | equemene | the functions mentioned above. |
| 29 | 1 | equemene | .SH ARGUMENTS |
| 30 | 1 | equemene | .TP 8 |
| 31 | 1 | equemene | I (global input) const int |
| 32 | 1 | equemene | On entry, I specifies the timer to stop/start. |
| 33 | 1 | equemene | .SH SEE ALSO |
| 34 | 1 | equemene | .BR HPL_ptimer_cputime \ (3), |
| 35 | 1 | equemene | .BR HPL_ptimer_walltime \ (3). |