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authorko1 <ko1@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2017-02-21 08:18:15 (GMT)
committerko1 <ko1@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2017-02-21 08:18:15 (GMT)
commit76c4cca19c0c27b1c3ca6f597384707cccf3de06 (patch)
treebcb13fed3f68e50cbca8a4bd475157d9bfeb7dca /variable.c
parent51de3aa2b27859305c74d5664724192602c4608f (diff)
add performance counting mechanism for MRI debug/tuning purpose.
* How to enable this feature? * define USE_DEBUG_COUNTER as 1. * you can disable to output the result with RUBY_DEBUG_COUNTER_DISABLE environment variable even if USE_DEBUG_COUNTER == 1. * How to add new counter? * add COUNTER(<name>) line on debug_counter.h. * include "debug_counter.h" * insert RB_DEBUG_COUNTER_INC(<name>) line on your favorite place. * counter output example: [RUBY_DEBUG_COUNTER] mc_inline_hit 999 [RUBY_DEBUG_COUNTER] mc_inline_miss 3 [RUBY_DEBUG_COUNTER] mc_global_hit 23 [RUBY_DEBUG_COUNTER] mc_global_miss 273 [RUBY_DEBUG_COUNTER] mc_global_state_miss 3 [RUBY_DEBUG_COUNTER] mc_class_serial_miss 0 [RUBY_DEBUG_COUNTER] mc_cme_complement 0 [RUBY_DEBUG_COUNTER] mc_cme_complement_hit 0 [RUBY_DEBUG_COUNTER] mc_search_super 1384 [RUBY_DEBUG_COUNTER] ivar_get_hit 0 [RUBY_DEBUG_COUNTER] ivar_get_miss 0 [RUBY_DEBUG_COUNTER] ivar_set_hit 0 [RUBY_DEBUG_COUNTER] ivar_set_miss 0 [RUBY_DEBUG_COUNTER] ivar_get 431 [RUBY_DEBUG_COUNTER] ivar_set 465 * mc_... is related to method caching. * ivar_... is related to instance variable accesses. * compare with dtrace/system tap features, there are completely no performacne penalties when it is disabled. * This feature is supported only on __GNUC__ compilers. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@57676 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'variable.c')
-rw-r--r--variable.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/variable.c b/variable.c
index d69471e..d1d9628 100644
--- a/variable.c
+++ b/variable.c
@@ -19,6 +19,7 @@
#include "id.h"
#include "ccan/list/list.h"
#include "id_table.h"
+#include "debug_counter.h"
struct rb_id_table *rb_global_tbl;
static ID autoload, classpath, tmp_classpath, classid;
@@ -1209,6 +1210,7 @@ VALUE
rb_ivar_get(VALUE obj, ID id)
{
VALUE iv = rb_ivar_lookup(obj, id, Qundef);
+ RB_DEBUG_COUNTER_INC(ivar_get);
if (iv == Qundef) {
if (RTEST(ruby_verbose))
@@ -1315,6 +1317,8 @@ rb_ivar_set(VALUE obj, ID id, VALUE val)
struct ivar_update ivup;
uint32_t i, len;
+ RB_DEBUG_COUNTER_INC(ivar_set);
+
rb_check_frozen(obj);
switch (BUILTIN_TYPE(obj)) {