* Dan McNulty <dkmcnu...@gmail.com> [100519 07:13] wrote: > Thanks for all the great suggestions! > > It looks like the kevent system call is the closest to what I need. > However, I didn't mention this, but I would like the process being > traced to be stopped on entrance to fork, exec, etc. This would be > similar to Linux's ptrace interface which sends a SIGTRAP to the > traced process on exec, fork, etc. From what I could tell so far, > kevent doesn't provide this functionality. > > Am I missing something? Is there a way to get kevent to stop the > process when events occur?
Not that I know of off the top of my head. Although if you want to contrib the code I can help get it in. :) -Alfred > > Thanks again for your help, > -Dan > > On Tue, May 18, 2010 at 2:40 AM, Alfred Perlstein <alf...@freebsd.org> wrote: > > * Dan McNulty <dkmcnu...@gmail.com> [100517 08:02] wrote: > >> Hi all, > >> > >> I have been experimenting with ptrace to determine when a child > >> process forks or calls exec. Particularly, I have explored tracing > >> every system call entry and exit similar to what the truss utility > >> does, and for my case, the performance impact of tracing every system > >> call is too great. > >> > >> Is there a more efficient way than tracing every system call entry and > >> exit to determine when a child process forks, calls exec, or creates a > >> new LWP? > >> > >> Thanks a lot for your help! > > > > kevent has some hooks, have you looked at that? > > > > -- > > - Alfred Perlstein > > .- AMA, VMOA #5191, 03 vmax, 92 gs500, 85 ch250, 07 zx10 > > .- FreeBSD committer > > -- - Alfred Perlstein .- AMA, VMOA #5191, 03 vmax, 92 gs500, 85 ch250, 07 zx10 .- FreeBSD committer _______________________________________________ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "freebsd-hackers-unsubscr...@freebsd.org"
