readLine of stdout blocks for a child process

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I launch a Win32 process from a java application. The Win32 process in turn
launches subprocess(s).

I then do my_proc_stdin.readLine in Java to collect input from the child
process. The problem is that this call blocks even when the child process has
exited. As far as I can tell it unblocks only when subprocess(s) lauched by
the child process have also exited.

The sub processes are launched as detached processes using CreateProcess -
what can I do to get the Java readLine call to return when the child process
is no longer there?

Thanks!

--
Bob Gaffaney
.

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