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vm_method.c: add new ruby::method-cache-clear dtrace probe

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* vm_method.c (rb_clear_method_cache_by_class): fire
  ruby::method-cache-clear probe on global or klass-level method cache
  clear [Bug #9190]
* probes.d (provider ruby): new dtrace probe
* doc/dtrace_probes.rdoc: docs for new probe
* test/dtrace/test_method_cache.rb: test for new probe

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@44103 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
tmm1 2013-12-09 22:50:44 +00:00
parent 4f7c10f06f
commit 4092574257
5 changed files with 61 additions and 1 deletions
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28
test/dtrace/test_method_cache.rb Normal file
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require_relative 'helper'
module DTrace
class TestMethodCacheClear < TestCase
def test_method_cache_clear
trap_probe(probe, <<-code) do |_,rbfile,lines|
class String; end
class String; def abc() end end
class Object; def abc() end end
code
assert_not_includes lines, "String #{rbfile} 1\n"
assert_includes lines, "String #{rbfile} 2\n"
assert_includes lines, "global #{rbfile} 3\n"
end
end
private
def probe
<<-eoprobe
ruby$target:::method-cache-clear
/arg1/
{
printf("%s %s %d\\n", copyinstr(arg0), copyinstr(arg1), arg2);
}
eoprobe
end
end
end if defined?(DTrace::TestCase)