1 files changed, 109 insertions, 0 deletions
diff --git a/debug_counter.h b/debug_counter.h
new file mode 100644
index 0000000000..f0f4e5ed0b
--- /dev/null
+++ b/debug_counter.h
@@ -0,0 +1,109 @@
+/**********************************************************************
+
+  debug_counter.h -
+
+  created at: Tue Feb 21 16:51:18 2017
+
+  Copyright (C) 2017 Koichi Sasada
+
+**********************************************************************/
+
+#ifndef USE_DEBUG_COUNTER
+#define USE_DEBUG_COUNTER 0
+#endif
+
+#ifdef RB_DEBUG_COUNTER
+
+/* method search */
+RB_DEBUG_COUNTER(mc_inline_hit)
+RB_DEBUG_COUNTER(mc_inline_miss)
+RB_DEBUG_COUNTER(mc_global_hit)
+RB_DEBUG_COUNTER(mc_global_miss)
+RB_DEBUG_COUNTER(mc_global_state_miss)
+RB_DEBUG_COUNTER(mc_class_serial_miss)
+RB_DEBUG_COUNTER(mc_cme_complement)
+RB_DEBUG_COUNTER(mc_cme_complement_hit)
+RB_DEBUG_COUNTER(mc_search_super)
+
+/* ivar access */
+RB_DEBUG_COUNTER(ivar_get_ic_hit)
+RB_DEBUG_COUNTER(ivar_get_ic_miss)
+RB_DEBUG_COUNTER(ivar_get_ic_miss_serial)
+RB_DEBUG_COUNTER(ivar_get_ic_miss_unset)
+RB_DEBUG_COUNTER(ivar_get_ic_miss_noobject)
+RB_DEBUG_COUNTER(ivar_set_ic_hit)
+RB_DEBUG_COUNTER(ivar_set_ic_miss)
+RB_DEBUG_COUNTER(ivar_set_ic_miss_serial)
+RB_DEBUG_COUNTER(ivar_set_ic_miss_unset)
+RB_DEBUG_COUNTER(ivar_set_ic_miss_oorange)
+RB_DEBUG_COUNTER(ivar_set_ic_miss_noobject)
+RB_DEBUG_COUNTER(ivar_get_base)
+RB_DEBUG_COUNTER(ivar_set_base)
+
+/* lvar access */
+RB_DEBUG_COUNTER(lvar_get)
+RB_DEBUG_COUNTER(lvar_get_dynamic)
+RB_DEBUG_COUNTER(lvar_set)
+RB_DEBUG_COUNTER(lvar_set_dynamic)
+RB_DEBUG_COUNTER(lvar_set_slowpath)
+
+/* object counts */
+RB_DEBUG_COUNTER(obj_free)
+
+RB_DEBUG_COUNTER(obj_str_ptr)
+RB_DEBUG_COUNTER(obj_str_embed)
+RB_DEBUG_COUNTER(obj_str_shared)
+RB_DEBUG_COUNTER(obj_str_nofree)
+RB_DEBUG_COUNTER(obj_str_fstr)
+
+RB_DEBUG_COUNTER(obj_ary_ptr)
+RB_DEBUG_COUNTER(obj_ary_embed)
+
+RB_DEBUG_COUNTER(obj_obj_ptr)
+RB_DEBUG_COUNTER(obj_obj_embed)
+
+/* load */
+RB_DEBUG_COUNTER(load_files)
+RB_DEBUG_COUNTER(load_path_is_not_realpath)
+
+#endif
+
+#ifndef RUBY_DEBUG_COUNTER_H
+#define RUBY_DEBUG_COUNTER_H 1
+
+#if !defined(__GNUC__) && USE_DEBUG_COUNTER
+#error "USE_DEBUG_COUNTER is not supported by other than __GNUC__"
+#endif
+
+enum rb_debug_counter_type {
+#define RB_DEBUG_COUNTER(name) RB_DEBUG_COUNTER_##name,
+#include "debug_counter.h"
+    RB_DEBUG_COUNTER_MAX
+#undef RB_DEBUG_COUNTER
+};
+
+#if USE_DEBUG_COUNTER
+#include "ruby/ruby.h"
+
+extern size_t rb_debug_counter[];
+
+inline static int
+rb_debug_counter_add(enum rb_debug_counter_type type, int add, int cond)
+{
+    if (cond) {
+	rb_debug_counter[(int)type] += add;
+    }
+    return cond;
+}
+
+#define RB_DEBUG_COUNTER_INC(type)                rb_debug_counter_add(RB_DEBUG_COUNTER_##type, 1, 1)
+#define RB_DEBUG_COUNTER_INC_UNLESS(type, cond) (!rb_debug_counter_add(RB_DEBUG_COUNTER_##type, 1, !(cond)))
+#define RB_DEBUG_COUNTER_INC_IF(type, cond)       rb_debug_counter_add(RB_DEBUG_COUNTER_##type, 1, (cond))
+
+#else
+#define RB_DEBUG_COUNTER_INC(type)              ((void)0)
+#define RB_DEBUG_COUNTER_INC_UNLESS(type, cond) (cond)
+#define RB_DEBUG_COUNTER_INC_IF(type, cond)     (cond)
+#endif
+
+#endif /* RUBY_DEBUG_COUNTER_H */