News for hackers. Stuff that matters.
Re:Why is this C++ code faster than my hand-written assembly... by pcordes on Tuesday August 22, 2017 @12:53PM (#15074199)
Presumably the usual technical meaning: https://en.wikipedia.org/wiki/Critical_section

i.e. the part protected by a lock() / unlock() in multi-threaded code.

Re:Why is this C++ code faster than my hand-written assembly... by marcosdumay on Tuesday August 22, 2017 @01:43PM (#15074728)
That deserves a place on the CS bad names gallery, just right of "strong type system". There isn't anything even critical about it, just exclusive.

The usage on the context of optimization is much more deserved, although I never heard anybody calling it "section" before, just critical code, critical loop, or stuff like that.

Re:Why is this C++ code faster than my hand-written assembly... by dingo_bat on Tuesday August 22, 2017 @01:34PM (#15074633)
But isn't that exactly what OP meant?