General

Profile

k0kubun (Takashi Kokubun)

Issues

open closed Total
Assigned issues 4 113 117
Reported issues 1 78 79

Projects

Project Roles Registered on
Ruby Committer, Release Manager 05/15/2017

Activity

07/01/2026

04:59 PM Ruby Revision a6d673a2 (git): ZJIT: Test rb_profile_frames from signal handler (#17194)
* ZJIT: Test rb_profile_frames from signal handler
* ZJIT: Use libc for signal profiler test
k0kubun (Takashi Kokubun)
04:58 PM Ruby Revision ee1435ee (git): ZJIT: Add helpers for HIR load instructions (#17565)
Add Function helpers for read-only frame and field access instructions, then migrate direct HIR construction sites for LoadPC, LoadEC, LoadSP, LoadSelf, GetEP, and LoadField. k0kubun (Takashi Kokubun)

06/26/2026

11:34 PM Ruby Revision 010de50c (git): ZJIT: Add perf symbol for block padding (#17517)
* ZJIT: Add perf symbol for block padding
* ZJIT: Explain HIR-only padding perf symbols
k0kubun (Takashi Kokubun)
10:43 PM Ruby Revision 5948386e (git): ZJIT: Add ZJIT perf symbols for trampolines (#17515)
k0kubun (Takashi Kokubun)
12:50 AM Ruby Revision 17da26ee (git): ZJIT: Rewrite jit_perf script in Ruby (#17474)
k0kubun (Takashi Kokubun)

06/22/2026

04:57 PM Ruby Revision 0ccf6c0c (git): test_box.rb: extend timeout for Windows CI (#16963)
test/ruby/test_box.rb: extend timeout for slow Windows CI
The default 10-second assert_separately timeout is too tight for
test_calling_root_box_methods_does_not_change_user_boxes_newly_created
on Windows CI, where the subprocess comple...
k0kubun (Takashi Kokubun)
04:55 PM Ruby Revision efafbe44 (git): ZJIT: Account for inlining depth in stack maps (#17373)
Co-authored-by: Alan Wu <XrXr@users.noreply.github.com> k0kubun (Takashi Kokubun)

06/17/2026

09:57 PM Ruby Revision 60aec1dc (git): ZJIT: Centralize stack index management in StackState (#17372)
k0kubun (Takashi Kokubun)
06:01 PM Ruby Revision e1308039 (git): ZJIT: Skip JIT entries for main and eval ISEQs (#17351)
Co-authored-by: Alan Wu <XrXr@users.noreply.github.com> k0kubun (Takashi Kokubun)
04:05 PM Ruby Revision e0184fff (git): ZJIT: Rename iseq_escapes_ep helpers (#17350)
k0kubun (Takashi Kokubun)

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