<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div>I have a (slightly rough) derivative version of ThreadPosix working on I386_DARWIN (implemented more along the lines of the current ThreadPThread) which abstracts all the nasty C-isms into ThreadPosixC.c. I would like to propose that this become our updated user-level threads implementation to complement ThreadPThread and ThreadWin32, but doing so will require reworking the C code for the other targets. My question is the following: which targets currently default to ThreadPosix (instead of ThreadPThread)? Do those targets all have makecontext/getcontext/swapcontext (or equivalents that might be simulated with setjmp/longjmp)? I can make the effort to ensure things work for SOLgnu/SOLsun, *_DARWIN, LINUXLIBC6, but don't have easy access to existing ABIs for other targets. Can someone else do that? The advantage of this move will be to eliminate a large swath of "cloned" RTMachine and RTThread implementations and simplify porting. If we are in agreement on this then I can begin to tidy up and commit my changes. The advantage of retaining the user-level threads code is its benefit as a live reference implementation of the Modula-3 thread semantics.</div><br><div> <span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><span class="Apple-style-span" style="border-collapse: separate; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; 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