Deadlocks in ExpectOutputStream

Thu, 15 Jan 2004 13:07:44 -0800

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Hi,

=20

            I have been trying to figure out a few problems relating to
the RemoteShellScript example code. I have written an application which
directly calls the run method of RemoteShellScript, and I have run into
at least 2 nasty bugs regarding synchronization. The first bug that I
encountered was when a large amount of output was received from the
command that I was executing. After a certain number of messages, output
would hang, and so would the code. I managed to work around this by
preventing the code from producing the large amount of output (an error
was causing the output). Now, I am encountering a situation where
somehow either the end marker is received out of sequence, or it is not
received at all (I can't tell which), and, as a result, the application
hangs. It is odd because I have made MANY successful calls prior to this
problematic one with no problems, and I have even made the exact same
call once previously on the machine. Any idea what could be happening or
how I can fix it?

=20

Thanks in advance,

Matt

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<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Hi,</span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>&nbsp;</span></font></p>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;
I have been trying to figure out a few problems relating to the
RemoteShellScript example code. I have written an application which =
directly
calls the run method of RemoteShellScript, and I have run into at least =
2 nasty
bugs regarding synchronization. The first bug that I encountered was =
when a
large amount of output was received from the command that I was =
executing.
After a certain number of messages, output would hang, and so would the =
code. I
managed to work around this by preventing the code from producing the =
large
amount of output (an error was causing the output). Now, I am =
encountering a
situation where somehow either the end marker is received out of =
sequence, or
it is not received at all (I can&#8217;t tell which), and, as a result, =
the
application hangs. It is odd because I have made MANY successful calls =
prior to
this problematic one with no problems, and I have even made the exact =
same call
once previously on the machine. Any idea what could be happening or how =
I can
fix it?

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>&nbsp;</span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Thanks in advance,</span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Matt</span></font></p>

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