Close pipe fd when owner process exits#215
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I encountered this issue while playing around with Vix streams: When halting a stream early, it seems like the target pipe
fdcan stay open until resource gc/cleanup.I've added a regression test, asserting
"Bad file descriptor"instead of:eagainafter the owner process exits. The fix makesfd_rt_stopcallclose_fdon the NIF resourcefd. I noticed there was an earlier commit 422fcfe aiming to fix a race condition, whereclose_fdwas moved out offd_rt_stop. Could that have been because theclose_fdinfd_rt_stopwas passed the call-by-valuefd?Note that I'm not a C/NIF expert, so I hope I haven't missed some lifecycle nuances here.