statistics/[0,2]

Module: builtins

statistics/0 — display memory allocation information
statistics/2 — display runtime statistics

FORMS

statistics

statistics(runtime, X)

DESCRIPTION

statistics/0 shows the current allocations and amounts used for the working areas of ALS Prolog. statistics(runtime, X) unifies X with a two-element list

[Total, SinceLast]

where Total is the elapsed cpu time since the start of Prolog execution, and SinceLast is the cpu time which has elapsed since the last call to statistics/2.

EXAMPLES

?- statistics.
Machine State:
E=ef7fd94 B=efffe1c H=ef7fe44 HB=ef7fe44 TR=efffe1c
MSP=ef7fd8c SPB=ef7fd94
Clause Space: 55540/262144 (bytes used/total bytes)
yes.

?- statistics(runtime, [Total, SinceLast]).
Total = 1.95
SinceLast = 0.033333333
yes.

NOTES

E, B, H, HB, TR, MSP, SPB are registers in the Warren Abstract Machine(WAM) ; cf. [Warren 83], [Warren 86], [Maier 88], Chapter 11.8, [Tick 88].