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bootstraptest/runner: speed up assert_finish by avoiding sleep

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We may use IO.select to watch for process exit.  This speeds up
"make test" by 2 seconds for me.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63754 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
normal 2018-06-26 23:44:00 +00:00
parent 8ae5c935a5
commit a1ba5b6a64
1 changed files with 8 additions and 3 deletions
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11
bootstraptest/runner.rb
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@ -373,13 +373,18 @@ def assert_finish(timeout_seconds, testsrc, message = '')
io = IO.popen("#{@ruby} -W0 #{filename}")
pid = io.pid
waited = false
tlimit = Time.now + timeout_seconds
while Time.now < tlimit
tlimit = Process.clock_gettime(Process::CLOCK_MONOTONIC) + timeout_seconds
diff = timeout_seconds
while diff > 0
if Process.waitpid pid, Process::WNOHANG
waited = true
break
end
sleep 0.1
if IO.select([io], nil, nil, diff)
while String === io.read_nonblock(1024, exception: false)
end
end
diff = tlimit - Process.clock_gettime(Process::CLOCK_MONOTONIC)
end
if !waited
Process.kill(:KILL, pid)