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/*
Copyright © 2011, 2012 MLstate
This file is part of OPA.
OPA is free software: you can redistribute it and/or modify it under the
terms of the GNU Affero General Public License, version 3, as published by
the Free Software Foundation.
OPA is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for
more details.
You should have received a copy of the GNU Affero General Public License
along with OPA. If not, see <http://www.gnu.org/licenses/>.
*/
CoreProfiler = {{
/** [measure(n)(f)] returns a pair: f() and the float representing the number of
seconds needed to execute f, n times. The timing information should have
better than millisecond precision, hence making it suitable for execution
profiling. */
measure(n)(f)=
get_time = %%BslTime.get_accurate_time%% : -> float
t_beg = get_time()
rec aux(n, v) =
if n == 0 then
t_end = get_time()
(t_end - t_beg, v)
else
aux(n-1, f())
aux(n-1, f())
/** [instrument(n,report)(f)] returns the value of f() and call report with the time needed to execute f, n times */
instrument(n, report)(f)=
(t, r) = measure(n)(f)
do report(t) : void
r
}}
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