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The time-apply procedure collects timing information for a
procedure application:
- (time-apply proc arg-list) invokes the procedure proc
with the arguments in arg-list. Four values are returned: a
list containing the result(s) of applying thunk, the number of
milliseconds of CPU time required to obtain this result, the number
of ``real'' milliseconds required for the result, and the number of
milliseconds of CPU time (included in the second result) spent on
garbage collection.
The reliability of the timing numbers depends on the operating
system. If multiple MzScheme threads are running, then the reported
time may include work performed by other threads.
The time syntactic form reports timing information
directly to the current output port:
- (time expr) times the evaluation of expr,
printing timing information to the current output port. The result of
the time expression is the result of expr.
PLT