Hi all,

We are running Perl 5.8.8 on Windows 2008

We have a c++ application which uses perlembed to run perl scripts within C++ application. The code is proprietary so can't share the stack trace below Perl_call_sv.

The hang is seen below. Can you please help with any pointers to see why the thread is hung and any tracing mechanism to see the file name.

I tried to use PERLIO_DEBUG=test.txt but the problem is we are a multi threaded application; each thread is running different perl script and only the below thread is hung. test.txt contains traces from all the threads making debugging it more difficult.

ntdll!NtReadFile+0xa
KERNELBASE!ReadFile+0x7a
kernel32!ReadFile+0x59
msvcr80!putch+0x33b
msvcr80!read+0x10e
msvcr80!filbuf+0x8e
msvcr80!fread_nolock_s+0x1ea
msvcr80!fread_s+0x90
msvcr80!fread+0x18
libperl!PerlIO_setpos+0x38e
libperl!Perl_reentrant_size+
libperl!Perl_runops_standard
libperl!Perl_call_sv+0x780

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In reply to Perl 5.8.8 on Windows, Hang in I/O operations using perlembed by perlstart_08

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