On Sat, 28 Dec 2013, Christoph Egger wrote: > Please consider the attached patch. It enables CAS emulation on > systems, that do not have native CAS instructions (?!), which is, for > example, true on ARM < ARMv6
Hi Christoph, How well is the CAS emulation working for you? If this emulation has potential bugs or may not even compile, then it would probably be better to require a separate configuration flag. Something like --enable-cas-emulation. Here's a snippet from the source tree that makes me think we do not want to set AO_REQUIRE_CAS without explicit user consent. src/gc/libatomic_ops-1.2/doc/README.txt: "" This emulation is slow, since it needs to disable signals. And it needs to block in case of contention. If you care about performance on a platform that can't directly provide compare-and-swap, there are probably better alternatives. "" - Daniel ------------------------------------------------------------------------------ Managing the Performance of Cloud-Based Applications Take advantage of what the Cloud has to offer - Avoid Common Pitfalls. Read the Whitepaper. http://pubads.g.doubleclick.net/gampad/clk?id=121054471&iu=/4140/ostg.clktrk _______________________________________________ Ecls-list mailing list Ecls-list@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/ecls-list
