On Tue, Apr 01, 2003 at 12:15:44PM -0800, Steve Alstrin wrote: > I compiled the test program, included with distro, and it appears that no > thread will start until a join is done on it. When I compile the test > program "test_pthread" with native threads the threads start after the > pthread_create call, whereas when compiled with pth threads, each thread > only starts when the join for that thread is done, and will not allow the > other threads to run until the previous join has completed. > > Is this a bug, or does all the other thread packages behave incorrectly? > > Any help would be greatly appreciated, i.e. my job depends on it.
I am not 100% sure if I understand the question, but I have the impression that your problem may be related to the non-preemptive nature of PTh... Your applications should either call pth_yield() or pth_*() IO functions (which can internally be called automatically by standard syscalls if PTh was compiled with hard-syscall option) for it to delegate control back to the CPU and therefore allow other threads to execute. (The same applies calling pthread_*() functions rather than the Pth specific pth_*() ones) Hmm also make sure that you are using pth(read)_join() according to POSIX defined semantics (threads should only be joined when the current thread wants to wait until thread termination, and that thread should not have been started using the asynchroneous flag). Otherwise, if the threads were started using the asynchroneous DETACH flag, they are expected to free their resources and exit naturally themselves at pth(read)_exit(), and should not be joined. This behavior is expected for all POSIX pthread_*() functions, no matter the implementation. Hope this helps, Matt ______________________________________________________________________ GNU Portable Threads (Pth) http://www.gnu.org/software/pth/ Development Site http://www.ossp.org/pkg/lib/pth/ Distribution Files ftp://ftp.gnu.org/gnu/pth/ Distribution Snapshots ftp://ftp.ossp.org/pkg/lib/pth/ User Support Mailing List [EMAIL PROTECTED] Automated List Manager (Majordomo) [EMAIL PROTECTED]
