Date: Mon, 14 Mar 2005 21:10:32 -0800 From: "Michael C. Shultz" <ringworm01@gmail.com> To: Daniel Eischen <deischen@freebsd.org>, freebsd-hackers@freebsd.org Cc: reso3w83@verizon.net Subject: Re: threads question Message-ID: <200503142110.33053.ringworm01@gmail.com> In-Reply-To: <Pine.GSO.4.43.0503142350110.9058-100000@sea.ntplx.net> References: <Pine.GSO.4.43.0503142350110.9058-100000@sea.ntplx.net>
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On Monday 14 March 2005 08:57 pm, Daniel Eischen wrote: > On Mon, 14 Mar 2005, Michael C. Shultz wrote: > > Hi, I've just reached a point in a program I'm writing where I'd > > like to do threading. > > > > When I try to start a thread like this: > > > > pthread_create(&thread, &attr, MGPMrUpgrade, property ); > > ^^^^^^^^ &property > > You should compile with -Wall and get rid of any warnings. > > > where property is a structure of many variables it doesn't get > > passed to the function. If I do this: > > > > pthread_create(&thread, &attr, MGPMrUpgrade( &property ), NULL ); > > That looks like it will actuall call MGPMrUpgrade() and use its > return value as the function pointer. > > > It works, but just seems wrong. > > > > Can anyone point me to a source file, preferably in /usr/src > > somewhere that passes a structure to a function being run as a > > thread so I may study the proper way to do this? > > src/lib/libpthread/test/sem_d.c > src/lib/libpthread/test/mutex_d.c > src/lib/libpthread/test/sigwait_d.c Great! > > I'd suggest getting Butenhof's "Programming with POSIX Threads" book. I did a google on "Programming with POSIX Threads" and this site popped up first. I remember this guy's stuff from way back when on signals I think, it was great for a beginner so maybe this one is worth looking at too. "http://users.actcom.co.il/~choo/lupg/tutorials/multi-thread/multi-thread.html" I found the book at Amazon, thanks for the tip! Many thanks! -Mike
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