fixme:pthread_kill_other_threads

[Uwe Bonnes]

>>>>> "Dan" == Dan Kegel <dank at kegel.com> writes:

    Dan> Uwe Bonnes wrote:
    >> I don't understand why pthread_kill_other_threads ist called when a
    >> programm creates a new process. With the pthread_kill_other_threads
    >> call, the starting process dies. ...  What can happen between chdir()
    >> and execve() to trigger the pthread_kill_other_threads() call?

    Dan> This is per the Posix standard;
    Dan> http://www.opengroup.org/onlinepubs/007908799/xsh/exec.html says:
    Dan> "A call to any exec function from a process with more than one
    Dan> thread results in all threads being terminated and the new
    Dan> executable image being loaded and executed."

    Dan> Maybe this is hurting you because LinuxThreads implements fork() in
    Dan> a nonstandard way, i.e. maybe it only forks the current thread
    Dan> rather than the whole process?

    Dan> In any case, what you're trying to do is so common and important
    Dan> that maybe it's a glibc bug.  Which glibc and kernel are you using?

I am trying to run a windows program combo ( schem.exe from the quicklogic
qworks 9.0 beta). The programm starts, tells about the demo license and then
starts a "background" process called tkwdog.exe, as I understand it.
After the background programm pops up its desktop window, the schem.exe
window isn't refreshed any more. I thought this would relate to
pthread_kill_other_threads_np, but obviously I am wrong. schem.exe hangs in
a WaitForSingleObject call: 

Here again an excerpt from the relay log, hopefully more helpfull:
    1844 08068938:Call kernel32.CreateEventA(00000000,00000001,00000000,100192a0 "TKMESG response trigger") ret=100168c1
    1845 08068938:Ret  kernel32.CreateEventA() retval=0000007c ret=100168c1
...
   51123 08068938:Call kernel32.ResetEvent(0000007c) ret=100169fd
   51124 08068938:Ret  kernel32.ResetEvent() retval=00000001 ret=100169fd
   51125 08068938:Call kernel32.CreateProcessA(00000000,10019364 "tkwdog.exe",00000000,00000000,00000000,04000000,00000000,00000000,405f6b7c,405f6b6c) ret=10016a23
   51126 fixme:module:CreateProcessA (D:\cae\pasic90\scs\TKWDOG.EXE,...): CREATE_DEFAULT_ERROR_MODE ignored
   51127 fixme:pthread_kill_other_threads_np
   51128 FIXME:pthread_rwlock_rdlock
   51129 FIXME:pthread_rwlock_unlock
   51130 FIXME:pthread_rwlock_rdlock
   51131 FIXME:pthread_rwlock_unlock
   51132 08068938:Ret  kernel32.CreateProcessA() retval=00000001 ret=10016a23
   51133 08068938:Call kernel32.WaitForSingleObject(0000007c,ffffffff) ret=10016a4d
   51134 096d4e18:Ret  x11drv.MsgWaitForMultipleObjectsEx() retval=00000001 ret=406c7efd
   51135 096d4e18:Call x11drv.MsgWaitForMultipleObjectsEx(00000000,00000000,00000000,00000000,00000000) ret=406c7b80
   51136 096d4e18:Ret  x11drv.MsgWaitForMultipleObjectsEx() retval=00000102 ret=406c7b80
   51137 096d4e18:Call window proc 0x40a134e0 (hwnd=00010020,msg=WM_NCHITTEST,wp=00000000,lp=010b01ac)
   51138 096d4e18:Ret  window proc 0x40a134e0 (hwnd=00010020,msg=WM_NCHITTEST,wp=00000000,lp=010b01ac) retval=00000001
   51139 096d4e18:Call window proc 0x40a134e0 (hwnd=00010020,msg=WM_SETCURSOR,wp=00010020,lp=02000001)
   51140 096d4e18:Ret  window proc 0x40a134e0 (hwnd=00010020,msg=WM_SETCURSOR,wp=00010020,lp=02000001) retval=00000276
   51141 096d4e18:Call window proc 0x40a134e0 (hwnd=00010020,msg=WM_MOUSEMOVE,wp=00000000,lp=010b01ac)
   51142 096d4e18:Ret  window proc 0x40a134e0 (hwnd=00010020,msg=WM_MOUSEMOVE,wp=00000000,lp=010b01ac) retval=00000000
   51143 096d4e18:Call x11drv.MsgWaitForMultipleObjectsEx(00000000,00000000,00000000,00000000,00000000) ret=406c7b80
   51144 096d4e18:Ret  x11drv.MsgWaitForMultipleObjectsEx() retval=00000102 ret=406c7b80
   51145 096d4e18:Call x11drv.MsgWaitForMultipleObjectsEx(00000001,403faec4,ffffffff,00000000,00000000) ret=406c7efd

There is no more message from  process 08068938 until I abort the program
with ^C on the console.

Bye

-- 
Uwe Bonnes                bon at elektron.ikp.physik.tu-darmstadt.de

Institut fuer Kernphysik  Schlossgartenstrasse 9  64289 Darmstadt
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