Revamp method coverage to support define_method

Traditionally, method coverage measurement was implemented by inserting
`trace2` instruction to the head of method iseq.  So, it just measured
methods defined by `def` keyword.

This commit drastically changes the measuring mechanism of method
coverage; at `RUBY_EVENT_CALL`, it keeps a hash from rb_method_entry_t*
to runs (i.e., it counts the runs per method entry), and at
`Coverage.result`, it creates the result hash by enumerating all
`rb_method_entry_t*` objects (by `ObjectSpace.each_object`).

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61023 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 3 insertions, 0 deletions

diff --git a/method.h b/method.h
index 0ec1a09759..584332561b 100644
--- a/method.h
+++ b/method.h
@@ -190,6 +190,9 @@ const rb_method_entry_t *rb_method_entry_at(VALUE obj, ID id);
 const rb_method_entry_t *rb_method_entry(VALUE klass, ID id);
 const rb_method_entry_t *rb_method_entry_without_refinements(VALUE klass, ID id, VALUE *defined_class);
 const rb_method_entry_t *rb_resolve_refined_method(VALUE refinements, const rb_method_entry_t *me);
+RUBY_SYMBOL_EXPORT_BEGIN
+const rb_method_entry_t *rb_resolve_me_location(const rb_method_entry_t *, VALUE[2]);
+RUBY_SYMBOL_EXPORT_END
 
 const rb_callable_method_entry_t *rb_callable_method_entry(VALUE klass, ID id);
 const rb_callable_method_entry_t *rb_callable_method_entry_with_refinements(VALUE klass, ID id, VALUE *defined_class);