Kernel.sleep(n) sleeps forever for n < 0.001
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Key: JRUBY-927
URL: http://jira.codehaus.org/browse/JRUBY-927
Project: JRuby
Issue Type: Bug
Components: Core Classes/Modules
Affects Versions: JRuby 0.9.9
Reporter: Andrew Geweke
Three facets of the same bug for Kernel.sleep(n):
- 0 < n < 0.001: JRuby sleeps forever; MRI sleeps the time specified
(presumably; it's awfully hard to measure intervals this short)
- n = 0: JRuby sleeps forever; MRI returns immediately
- n < 0: JRuby throws a Java exception (NativeException) from
java.lang.Object.wait(); MRI raises an ArgumentError
The fix seems straightforward -- RubyKernel.java:544 (in JRuby 0.9.9); needs to
add an "if (milliseconds > 0)" there, and whatever code is required above to
throw a native-Ruby exception "if seconds.convertToFloat().getDoubleValue() ==
0.0".
Apologies for not including a patch -- I'm deep in the midst of my work using
JRuby (building a scalability-testing tool using WATIR, but coupled to Apache
Commons HTTPClient, not IE), and don't have a JRuby dev environment set up. But
I hope to very soon...
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