process hanging on 7.2-PRERELEASE

[Kostik Belousov]

On Sat, May 02, 2009 at 02:43:52PM +0400, Max Brazhnikov wrote:
> Currently all kde4 ports marked as jobs_unsafe, because of automoc4 hangs.
> The problem can be easely reproduced building e.g. accessibility/kdeaccessibility4
> with multiple jobs: replace MAKE_JOBS_UNSAFE with MAKE_JOBS_SAFE in port Makefile
> and run 'make MAKE_JOBS_NUMBER=16'. Build will be freezed on
> 
> /usr/local/bin/cmake -E cmake_progress_report /tank/obj/usr/ports/accessibility/kdeaccessibility4/work/kdeaccessibility-4.2.2/build/CMakeFiles  77 78 
> 79 8081 82 83 84 85 86 87 88 89 90 91 92 93 94 95
> [ 95%] Built target kmouth
> 
> # ps | grep automoc4
> 77829  p4  S+     0:00.27 /usr/local/bin/automoc4 /tank/obj/usr/ports/accessibility/kdeaccessibility4/
> 77840  p4  I+     0:00.00 /usr/local/bin/automoc4 /tank/obj/usr/ports/accessibility/kdeaccessibility4/
> 
> #gdb66 automoc4 77829
> 0x2846fb3b in select () at select.S:2
> 2       RSYSCALL(select)
> (gdb) bt
> #0  0x2846fb3b in select () at select.S:2
> #1  0x2838d788 in __select (numfds=6, readfds=0xbf9feee8, writefds=0x0, exceptfds=0x0, timeout=0x0)
>     at /usr/freebsd/7/src/lib/libthr/thread/thr_syscalls.c:444
> #2  0x281b4f3d in QProcessManager::run (this=0x287142f0) at io/qprocess_unix.cpp:301
> #3  0x280f30e2 in QThreadPrivate::start (arg=0x287142f0) at thread/qthread_unix.cpp:185
> #4  0x2838b68a in thread_start (curthread=0x28701150) at /usr/freebsd/7/src/lib/libthr/thread/thr_create.c:288
> #5  0x00000000 in ?? ()
> Current language:  auto; currently asm
> (gdb)
> 
> 
> # gdb66 automoc4 77840
> 0x28395593 in _umtx_op_err () at /usr/freebsd/7/src/lib/libthr/arch/i386/i386/_umtx_op_err.S:36
> 36      SYSCALL_ERR(_umtx_op)
> (gdb) bt
> #0  0x28395593 in _umtx_op_err () at /usr/freebsd/7/src/lib/libthr/arch/i386/i386/_umtx_op_err.S:36
> #1  0x283953c4 in __thr_umutex_lock (mtx=0x8054f3c, id=100416) at /usr/freebsd/7/src/lib/libthr/thread/thr_umtx.c:58
> #2  0x28390502 in mutex_lock_sleep (curthread=0x28701040, m=0x8054f3c, abstime=0x0) at /usr/freebsd/7/src/lib/libthr/thread/thr_mutex.c:401
> #3  0x283fb0ea in _malloc_postfork () at /usr/freebsd/7/src/lib/libc/stdlib/malloc.c:1029
> #4  0x28393038 in _fork () at /usr/freebsd/7/src/lib/libthr/thread/thr_fork.c:178
> #5  0x281b7381 in QProcessPrivate::startProcess (this=0x287720f0) at io/qprocess_unix.cpp:570
> #6  0x2817a181 in QProcess::start (this=0xbfbfe1b8, program=@0xbfbfe5dc, arguments=@0xbfbfe1b4, mode=@0xbfbfe1c0) at io/qprocess.cpp:1508
> #7  0x08051720 in AutoMoc::echoColor (this=0xbfbfe5c8, msg=@0xbfbfe258) at /tank/obj/usr/ports/devel/automoc4/work/automoc4-0.9.88/kde4automoc.cpp:73
> #8  0x0804c0a7 in AutoMoc::generateMoc (this=0xbfbfe5c8, sourceFile=@0x28714418, mocFileName=@0x2871441c)
>     at /tank/obj/usr/ports/devel/automoc4/work/automoc4-0.9.88/kde4automoc.cpp:569
> #9  0x0804f4ae in AutoMoc::run (this=0xbfbfe5c8) at /tank/obj/usr/ports/devel/automoc4/work/automoc4-0.9.88/kde4automoc.cpp:470
> #10 0x080504e6 in main (argc=Cannot access memory at address 0x0
> ) at /tank/obj/usr/ports/devel/automoc4/work/automoc4-0.9.88/kde4automoc.cpp:114
> Current language:  auto; currently asm
> (gdb)

Great.

I think this is a missed merge of the r185514 to 7. Can you, please,
retest with that revision merged ?
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