erts: Avoid heart killing a nicely exiting emulator

Symptom:
Heart kills exiting emulator before is has flushed all ports
and with HEART_KILL_SIGNAL=SIGABRT it may also produce
unnecessary core dumps from doing init:reboot() for example.

Problem:
Heart port is closed together with all the others in handle_reap_ports()
which is detected by heart OS process.

Solution 1:
Leave the heart port alone in handle_reap_ports() and let it be closed
by OS when emulator exists. It doesn't need to be flushed anyway.

Solution 2:
When heart OS process gets EOF on connection let it wait max 5 seconds
for emulator process to self terminate before trying to kill it.

0 files changed, 0 insertions, 0 deletions