diff options
| 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 | 76c4cca19c0c27b1c3ca6f597384707cccf3de06 (patch) | |
| tree | bcb13fed3f68e50cbca8a4bd475157d9bfeb7dca /vm_method.c | |
| parent | 51de3aa2b27859305c74d5664724192602c4608f (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 'vm_method.c')
| -rw-r--r-- | vm_method.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/vm_method.c b/vm_method.c index 00b2763e5d..63b8aad9c7 100644 --- a/vm_method.c +++ b/vm_method.c @@ -695,6 +695,7 @@ search_method(VALUE klass, ID id, VALUE *defined_class_ptr) rb_method_entry_t *me; for (me = 0; klass; klass = RCLASS_SUPER(klass)) { + RB_DEBUG_COUNTER_INC(mc_search_super); if ((me = lookup_method_table(klass, id)) != 0) break; } @@ -778,10 +779,12 @@ method_entry_get(VALUE klass, ID id, VALUE *defined_class_ptr) verify_method_cache(klass, id, ent->defined_class, ent->me); #endif if (defined_class_ptr) *defined_class_ptr = ent->defined_class; + RB_DEBUG_COUNTER_INC(mc_global_hit); return ent->me; } #endif + RB_DEBUG_COUNTER_INC(mc_global_miss); return method_entry_get_without_cache(klass, id, defined_class_ptr); } @@ -798,6 +801,7 @@ prepare_callable_method_entry(VALUE defined_class, ID id, const rb_method_entry_ const rb_callable_method_entry_t *cme; if (me && me->defined_class == 0) { + RB_DEBUG_COUNTER_INC(mc_cme_complement); VM_ASSERT(RB_TYPE_P(defined_class, T_ICLASS) || RB_TYPE_P(defined_class, T_MODULE)); VM_ASSERT(me->defined_class == 0); @@ -806,6 +810,7 @@ prepare_callable_method_entry(VALUE defined_class, ID id, const rb_method_entry_ } if (rb_id_table_lookup(mtbl, id, (VALUE *)&me)) { + RB_DEBUG_COUNTER_INC(mc_cme_complement_hit); cme = (rb_callable_method_entry_t *)me; VM_ASSERT(callable_method_entry_p(cme)); } |