Process::Status.coredump? implementation w/ patch and ruby test script
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Key: JRUBY-5979
URL: https://jira.codehaus.org/browse/JRUBY-5979
Project: JRuby
Issue Type: Improvement
Components: Core Classes/Modules
Affects Versions: JRuby-OSSL 0.7.2
Environment: Mac OSX Snow Leopard
Reporter: Chris White
Fix For: JRuby 1.7
Attachments:
0003-Add-a-temporary-implementation-for-Process-Status-co.patch,
coredump_test.rb
While attempting to run the CRuby bootstrap test suite using JRuby, I noticed
exceptions were occurring because Process::Status.coredump? was marked as not
implemented. The CRuby version of coredump? is as follows:
-----
/*
* call-seq:
* stat.coredump? -> true or false
*
* Returns +true+ if _stat_ generated a coredump
* when it terminated. Not available on all platforms.
*/
static VALUE
pst_wcoredump(VALUE st)
{
#ifdef WCOREDUMP
int status = PST2INT(st);
if (WCOREDUMP(status))
return Qtrue;
else
return Qfalse;
#else
return Qfalse;
#endif
}
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It uses a system library macro, WCOREDUMP to check the status of a process
inspected using the wait() system call. If WCOREDUMP is not present in the
system implementation, false is returned. This could be completely implemented
using a C wrapper that the Java side could interface with, but it would require
a lot more legwork. Instead this patch has it return false as per the "not
available on all platforms" condition (which is somewhat true if you consider
pure Java the platform).
Attached is both the patch and a Ruby Test::Unit::TestCase.
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