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Issue Type:
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![Bug]() Bug
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Affects Versions:
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JRuby 1.7.0.pre1, JRuby 1.6.7 |
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Assignee:
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Unassigned |
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Components:
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Core Classes/Modules |
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Created:
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09/Jul/12 9:39 AM
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Description:
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The following code should produce:
$ ruby --version
ruby 1.9.3p194 (2012-04-20 revision 35410) [x86_64-linux]
$ ruby /tmp/thread_test.rb
10000
10000
10000
10000
10000
But, instead produces something like the following with JRuby:
$ ruby --version
jruby 1.6.7 (ruby-1.8.7-p357) (2012-02-22 3e82bc8) (OpenJDK 64-Bit Server VM 1.7.0_03-icedtea) [linux-amd64-java]
$ ruby --1.9 /tmp/thread_test.rb
22058
22404
21514
22573
19653
JRuby's implementation doesn't appear to isolate @val (per thread instance) like Ruby's does. The source:
require 'thread'
PUTS_MUTEX = Mutex.new
def s_puts str
PUTS_MUTEX.synchronize { puts str }
end
@started = false
threads = (0...5).collect do
Thread.new do
@val = 0
until @started; end #cheesy, but avoids a thread completing before another starts
10000.times { @val += 1 }
s_puts @val
end
end
@started = true
threads.each { |thread| thread.join }
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Project:
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JRuby
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Priority:
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![Major]() Major
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Reporter:
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Brian Ericson
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