Timeout::timeout is broken
--------------------------
Key: JRUBY-2149
URL: http://jira.codehaus.org/browse/JRUBY-2149
Project: JRuby
Issue Type: Bug
Affects Versions: JRuby 1.1RC2
Reporter: Igor Minar
Assignee: Thomas E Enebo
Timeout::timeout doesn't work as expected and the behavior differs between
JRuby 1.0.3 and JRuby 1.1RC2.
Test case:
{code}
require 'timeout'
require 'benchmark'
n = 10000000
Benchmark.measure {
begin
Timeout::timeout(1) { for i in 0..n do; (i + i % (i+1)) % (i + 10) ; end }
rescue Timeout::Error => e
puts e
end
}.to_s
{code}
JRuby 1.0.3 Result:
{code}
execution expired
=> " 27.474000 0.000000 27.474000 ( 27.473000)\n"
{code}
Timeout::Error exception was thrown, but only after the execution of the loop
finished (which took more than 1 second)
JRuby 1.1RC2 Result:
{code}
=> " 27.895000 0.000000 27.895000 ( 27.895000)\n"
{code}
Note that the Timeout::Error exception was not thrown and the execution didn't
time out after 1 second as expected.
MRI 1.8.6 Result:
{code}
execution expired
=> " 0.980000 0.010000 0.990000 ( 1.006831)\n"
{code}
This is the only correct result (if {{n}} is high enough to cause the execution
of the loop to last longer than one second.
I originally created [JRUBY-2148|http://jira.codehaus.org/browse/JRUBY-2148],
because I suspected that the Java Integration is responsible for this, but that
might not be the case.
Thanks,
Igor
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