Could you try this version:
<---
a = []
trap(:INT) { puts "INT recvd" ; a.push(1) }
trap(:TERM) { puts "TERM recvd" ; a.push(2) }
pid = $$
puts "parent pid: #{pid}"
begin
fork do
puts "child pid: #{$$}"
sleep 0.5
Process.kill(:INT, pid)
Process.kill(:TERM, pid)
puts "signals sent."
end
sleep 1
a.sort
p a
rescue NotImplementedError
[1, 2]
end
---->
parent pid: 44147
child pid: 44150
signals sent.
[]
According to ktrace, signals are sent to parent pid.
It might be related to our pid semantic, each thread have different pid.
The signal cannot be received by a different thread.
#934 test_thread.rb:389:in `<top (required)>':
open("zzz.rb", "w") do |f|
f.puts <<-END
begin
m = Mutex.new
Thread.new { m.lock; sleep 1 }
sleep 0.3
parent = Thread.current
Thread.new do
sleep 0.3
begin
fork { GC.start }
rescue Exception
parent.raise $!
end
end
m.lock
pid, status = Process.wait2
$result = status.success? ? :ok : :ng
rescue NotImplementedError
$result = :ok
end
END
end
require "./zzz.rb"
$result
#=> "" (expected "ok")
FAIL 2/937 tests failed
make: *** [yes-btest-ruby] Error 1
Very strange. What about this script?
May be not.
For what should "Process.wait2" wait ?
The fork of garbage collector and wait2 seems be by a different thread,
which with our pthread implementration does not work.
<------
m = Mutex.new
Thread.new { m.lock; sleep 3 ; puts "after m.lock in thread" }
sleep 1
m.lock
puts "after m.lock"
------>
after m.lock in thread
after m.lock
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