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Text File | 1997-08-18 | 1.3 KB | 44 lines | [TEXT/R*ch] |
- (* Timer -- SML Basis Library *)
-
- local
- type time = Time.time
- in
- type cpu_timer
- type real_timer
-
- val startCPUTimer : unit -> cpu_timer
- val totalCPUTimer : unit -> cpu_timer
- val checkCPUTimer : cpu_timer -> {usr : time, sys : time, gc : time}
-
- val startRealTimer : unit -> real_timer
- val totalRealTimer : unit -> real_timer
- val checkRealTimer : real_timer -> time
- end
-
- (* A [cpu_timer] measures the CPU time consumed.
-
- A [real_timer] measures the real time that has passed.
-
- [startCPUTimer ()] returns a cpu_timer started at the moment of
- the call.
-
- [totalCPUTimer ()] returns a cpu_timer started at the moment the
- library was loaded.
-
- [checkCPUTimer tmr] returns {usr, sys, gc} where usr is the amount
- of user CPU time consumed since tmr was started, gc is the amount
- of user CPU time spent on garbage collection, and sys is the
- amount of system CPU time consumed since tmr was started. Note
- that gc time is included in the usr time. Under MS DOS, usr time
- and gc time are measured in real time.
-
- [startRealTimer ()] returns a real_timer started at the moment of
- the call.
-
- [totalRealTimer ()] returns a real_timer started at the moment the
- library was loaded.
-
- [checkRealTimer tmr] returns the amount of real time that has passed
- since tmr was started.
- *)
-