http://d.puremagic.com/issues/show_bug.cgi?id=8831
Summary: core.atomic: add compare-and-swap function with other result type Product: D Version: D2 Platform: x86 OS/Version: All Status: NEW Severity: enhancement Priority: P2 Component: Phobos AssignedTo: nob...@puremagic.com ReportedBy: 4deni...@gmail.com --- Comment #0 from mimocrocodil <4deni...@gmail.com> 2012-10-16 15:08:40 PDT --- Many algorithms require to know what value it was under a pointer at the time of comparison. (This value is unknown only when compare-and-swap fails, of course.) For example, it is required for RTCSS algorithm from which it can be obtained CASN (compare-and-swap for any number of the elements). Probably, CMPXCHG can do that. Ideally it would be able to get value under pointer at the time of comparison and the result of compare (true/false) as a struct. I do not know about performance of that behaviour but in terms of more high-level programming it will be useful. (CAS can be called often by its nature, and some of its result will not be used usually, but I do not know, may be such cases will be optimized by compiler.) Or may be it can be three functions with different names. -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------