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* 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
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|---|---|---|
| .. | ||
| test | ||
| asm_parse.rb | ||
| bisect.sh | ||
| build-transcode | ||
| change_maker.rb | ||
| checksum.rb | ||
| debug_counter.rb | ||
| downloader.rb | ||
| enc-emoji-citrus-gen.rb | ||
| enc-emoji4unicode.rb | ||
| enc-unicode.rb | ||
| eval.rb | ||
| expand-config.rb | ||
| extlibs.rb | ||
| fake.rb | ||
| file2lastrev.rb | ||
| gem-unpack.rb | ||
| gen_dummy_probes.rb | ||
| gen_ruby_tapset.rb | ||
| generic_erb.rb | ||
| id2token.rb | ||
| ifchange | ||
| insns2vm.rb | ||
| install-sh | ||
| instruction.rb | ||
| jisx0208.rb | ||
| make-snapshot | ||
| make_hgraph.rb | ||
| mdoc2man.rb | ||
| merger.rb | ||
| mk_call_iseq_optimized.rb | ||
| mkconfig.rb | ||
| mkrunnable.rb | ||
| node_name.rb | ||
| parse.rb | ||
| probes_to_wiki.rb | ||
| rbinstall.rb | ||
| rbuninstall.rb | ||
| redmine-backporter.rb | ||
| release.sh | ||
| rmdirs | ||
| runruby.rb | ||
| strip-rdoc.rb | ||
| transcode-tblgen.rb | ||
| update-deps | ||
| vcs.rb | ||
| vpath.rb | ||
| vtlh.rb | ||
| ytab.sed | ||