This is related to my earlier post, Teeing STDOUT and STDERR to files using filehandle references, from about a month ago.
I'm redirecting STDOUT and STDERR to files with code similar (but with more function calls in the way) to this: 
$this->{'stdout_log'} = \*FH_STDOUT; # These files have already been o
+pened.
$this->{'stderr_log'} = \*FH_STDERR;

# Save the previous filehandles for STDOUT and STDERR so we
# can restore them when we're done.
$this->{'_stdout'} = \*STDOUT;
$this->{'_stderr'} = \*STDERR;

# Set the new filehandles for STDOUT and STDERR
*STDOUT = $this->{'stdout_log'};
*STDERR = $this->{'stderr_log'};

[download]
Later, I try to restore STDOUT and STDERR before I close the logfiles: 
if(defined($this->{'_stdout'}))
{
    *STDOUT = $this->{'_stdout'};
    print STDOUT "STDOUT restored\n"; # Filehandle explicitly specifie
+d for debugging only...
    undef($this->{'_stdout'});
}
if(defined($this->{'_stderr'}))
{
    *STDERR = $this->{'_stderr'};
    print STDERR "STDERR restored\n";
    undef($this->{'_stderr'});
}

[download]
I successfully log STDOUT/ERR to a file, but when I attempt to restore them later, the if blocks evaluate, but the print statements still go to the logfiles, instead of the TTY. Following that, of course, when I close the files and attempt to print to STDOUT and STDERR, I get: 
print() on closed filehandle main::STDOUT at FSLAMTest.pm line 312.

[download]
It would seem that my attempt to preserve the original STDOUT and STDERR is not successful. Any suggestions? TIA.

--isotope
http://www.skylab.org/~isotope/

In reply to Restoring STDOUT and STDERR after having redirected them to files by isotope

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