From 0a6816ecd79fac5dfb32eb237f4c31bb45c9460d Mon Sep 17 00:00:00 2001
From: mame <mame@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Tue, 5 Dec 2017 07:16:42 +0000
Subject: 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
---
 hash.c | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'hash.c')

diff --git a/hash.c b/hash.c
index c8d1406cc7..cd1cc1437f 100644
--- a/hash.c
+++ b/hash.c
@@ -426,6 +426,14 @@ rb_hash_new(void)
     return hash_alloc(rb_cHash);
 }
 
+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)
 {
-- 
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