DATA.flock causes ClassCastException
------------------------------------
Key: JRUBY-2542
URL: http://jira.codehaus.org/browse/JRUBY-2542
Project: JRuby
Issue Type: Bug
Components: Core Classes/Modules
Affects Versions: JRuby 1.1.1
Environment: Windows XP, Java 1.6, JRuby 1.1.1
Reporter: Daniel Berger
The following script works fine in MRI, but causes an error in JRuby:
{noformat}
class Foo
def self.mainloop
while true
puts "Looping..."
sleep 3
end
end
end
DATA.flock(File::LOCK_EX)
if $0 == __FILE__
Foo.mainloop
end
__END__
{noformat}
With JRuby I get:
C:\Documents and Settings\djberge\My
Documents\Programming\Ruby>c:\jruby\bin\jruby lock_test.rb
Exception in thread "main" java.lang.ClassCastException:
java.nio.channels.Channels$ReadableByteChannelImpl cannot be cast to
java.nio.channels.FileChannel
at org.jruby.RubyFile.flock(RubyFile.java:286)
at org.jruby.RubyFileInvoker$flock_method_1_0.call(Unknown Source)
at
org.jruby.runtime.CallSite$InlineCachingCallSite.cacheAndCall(CallSite.java:146)
at
org.jruby.runtime.CallSite$InlineCachingCallSite.call(CallSite.java:302)
at
ruby.C_3a_.Documents_20_and_20_Settings.djberge.My_20_Documents.Programming.Ruby.lock_test.__file__(lock_test.rb:10)
at
ruby.C_3a_.Documents_20_and_20_Settings.djberge.My_20_Documents.Programming.Ruby.lock_test.load(lock_test.rb)
at org.jruby.Ruby.runScript(Ruby.java:511)
at org.jruby.Ruby.runNormally(Ruby.java:431)
at org.jruby.Ruby.runFromMain(Ruby.java:311)
at org.jruby.Main.run(Main.java:144)
at org.jruby.Main.run(Main.java:89)
at org.jruby.Main.main(Main.java:80)
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