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| author | ko1 <ko1@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2017-02-21 08:18:15 +0000 |
|---|---|---|
| committer | ko1 <ko1@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2017-02-21 08:18:15 +0000 |
| commit | 595e3b9ac1af458b297e4ac6d2a68ca041942762 (patch) | |
| tree | bcb13fed3f68e50cbca8a4bd475157d9bfeb7dca /variable.c | |
| parent | 8bce091bab2b6d09605d8bef68bd7bd62f0e2f45 (diff) | |
| download | ruby-595e3b9ac1af458b297e4ac6d2a68ca041942762.tar.gz | |
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.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/variable.c b/variable.c index d69471ef4f..d1d96284a1 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)) { |