Alan Cox wrote:
>
> > Here are a few alternate ideas off the top of my head:
> >
> > * Rip out Linuxthreads, replace it with NGPT, and
> > start fixing from there? (Or does NGPT already fix this?)
> >
> > * Rewrite Linux's setitimer(ITIMER_PROF,...) to set up an
> > interval timer for all threads of the thread group.
> >
> > * Implement the profil() system call from Solaris
> > ( http://ua1vm.ua.edu/cgi-bin/man-cgi?profil+2 )
> >
> > What's your favorite idea for getting profiling of
> > multithreaded programs working on Linux?
>
> Kernel support is not needed for this, do it in user space. Or prove it
> has to be in kernel space
I'm all in favor of a userspace fix. I suggested a patch
to glibc to fix this. Ulrich rejected it; I'm trying
to coax out of him how he thinks profiling of multithreaded
programs on Linux should be fixed.
I hope we can all at least agree that
cc foo.c -pg -pthread
./a.out
gprof a.out
should work in Linux without any workarounds on the part of the programmer...
- Dan
- Dan
-
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This archive was generated by hypermail 2b29 : Fri Mar 15 2002 - 22:00:16 EST