I would like to request an enhancement of TBB loop
patterns: if the Task Scheduler is limited to a single thread, the behavior
of parallel for/do/other loops should be sequential and completely backward
compatible to a single-thread execution.
Motivation: we are moving legacy single-threaded code to parallel
execution, we need to keep backward compatibility. Users that do not choose to
use the new parallel features should experience no behavior change.
As for now, I have to maintain 2 code streams: parallel and
single-threaded. This complicates the development and the result code.
It seems that enabling backward compatibility for a single
thread is not complicated and will not add performance overhead for TBB
parallel loops.
Thanks!
Alex Nikonov
