Date: Thu, 26 Oct 1995 15:40:27 EDT From: Christopher Provenzano <proven@MIT.EDU> To: Richard Toren <rpt@miles.sso.loral.com> Cc: hackers@freebsd.org, proven@MIT.EDU Subject: Re: A quick vote on pthreads PLZ Message-ID: <9510261940.AA07699@jimi.MIT.EDU> In-Reply-To: Your message of "Sat, 21 Oct 1995 21:32:39 EDT." <Pine.SUN.3.91.951021211737.25662B-100000@miles>
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> Has the FPU save/restore been fixed in pthreads recently? Yes. > > With the locking in the libraries, what will the gratutious mutex locking > cost in time if the app is not threaded? For the most part it shouldn't be noticable. (There are a few exceptions namely getc()/putc()) In general mutexes are cheap, debugging race conditions isn't. > > Just some food for thought. I have used pthreads since this summer to > practice threaded code analysis and construction, but I knew it was just > a package, and had limitations. If it is advertised as being part of the > OS, (and possibly POSIX) wil lit mislead people? I hope not, but to be safe a non threaded one should be provided. It will take time to hammer out the bugs such that the threaded one will be as reliable as the non threaded one. CAP
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