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, 8 insertions, 0 deletions

diff --git a/hash.c b/hash.c
index c8d1406cc7..cd1cc1437f 100644
--- a/hash.c
+++ b/hash.c
@@ -427,6 +427,14 @@ rb_hash_new(void)
 }
 
 VALUE
+rb_hash_new_compare_by_id(void)
+{
+    VALUE hash = rb_hash_new();
+    RHASH(hash)->ntbl = rb_init_identtable();
+    return hash;
+}
+
+VALUE
 rb_hash_new_with_size(st_index_t size)
 {
     VALUE ret = rb_hash_new();