Implement Kernel::fork (for experimental purposes only)
-------------------------------------------------------
Key: JRUBY-1845
URL: http://jira.codehaus.org/browse/JRUBY-1845
Project: JRuby
Issue Type: Bug
Reporter: Charles Oliver Nutter
Assignee: Charles Oliver Nutter
Fix For: JRuby 1.1b2
fork is unlikely to ever be safe considering we'd be forking an entire JVM. But
implement it anyway, disabled by default, for experimentation purposes.
I have this done. Here's sample output from a session using fork:
{noformat}
~/NetBeansProjects/jruby $ jruby -J-Djruby.fork.enabled=true -e "p fork"
2140
0
# To suppress the following error report, specify this argument
# after -XX: or in .hotspotrc: SuppressErrorAt=/os_macosx.cpp:1806]
#
# An unexpected Java error has been detected by HotSpot Virtual Machine.
#
# If this error is reproducible, please report it with the following
information:
# 1. Provide the steps to reproduce, a test case, and any relevant
information
# 2. The corresponding JavaNativeCrash_pid<num>.crash.log (Java state)
# 3. The corresponding <name>.crash.log (native state; generated by
CrashReporter)
# 4. This data:
#
# Java VM: Java HotSpot(TM) Client VM (1.6.0-b88-17-release mixed mode, sharing)
# An unexpected error has been detected by Java Runtime Environment:
#
# Internal Error
(/SourceCache/HotSpot16/HotSpot16-17/src/os/macosx/vm/os_macosx.cpp, line
1806), pid=2140, tid=25184768
#
# Error: mach_port_destroy failed: 0xf
# An error report file with more information is saved as
/Users/headius/Library/Logs/Java/JavaNativeCrash_pid2140.crash.log
#
#
# File report at: http://bugreport.apple.com/
#
~/NetBeansProjects/jruby $ jruby -J-Djruby.fork.enabled=true
-J-XX:SuppressErrorAt=/os_macosx.cpp:1806 -e "p fork"
2144
0
{noformat}
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