[409] in Pthreads mailing list archive
Re: proven's pthread with C++?
daemon@ATHENA.MIT.EDU (Mason J. Katz)
Wed Sep 11 13:16:09 1996
Date: Wed, 11 Sep 1996 09:44:26 -0700
From: "Mason J. Katz" <mjk@cs.arizona.edu>
To: wong@CS.UCLA.EDU
Cc: pthreads@MIT.EDU
In-Reply-To: <Pine.SOL.3.91.960910210005.375A-100000@flamingo.cs.ucla.edu>
(wong@CS.UCLA.EDU)
If you want to use a class method as the entry point into the thread
make it a static method. Manually passing "this" and casting the
method to a function is extremely non-portable and very hard to
convince the compiler to let you do it.
Do something like this instead.
class Foo {
public:
bar();
private:
static void run(void *arg); /* thread start function */
^^^^^^
}
void Foo::run(void *arg) {
Foo *o = (Foo *)arg; /* get the object */
o->bar();
}
The problems of passing class methods as functions occurs far too
often. Remember this next time you deal with signals or callbacks
(even qsort) in C++.
--
/ / / / / | Mason J. Katz <mjk@cs.arizona.edu>
// // / / / | <http://www.primenet.com/~mjk>
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