Date: Mon, 14 Mar 2005 23:57:29 -0500 (EST) From: Daniel Eischen <deischen@freebsd.org> To: "Michael C. Shultz" <ringworm01@gmail.com> Cc: freebsd-hackers@freebsd.org Subject: Re: threads question Message-ID: <Pine.GSO.4.43.0503142350110.9058-100000@sea.ntplx.net> In-Reply-To: <200503142014.28897.ringworm01@gmail.com>
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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 I'd suggest getting Butenhof's "Programming with POSIX Threads" book. -- DE
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