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author | Koichi Sasada <ko1@atdot.net> | 2020-10-16 15:20:40 +0900 |
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committer | Koichi Sasada <ko1@atdot.net> | 2020-10-17 08:18:04 +0900 |
commit | f6661f50854e0cdccb03ee516a21ce62adf6c802 (patch) | |
tree | 72668d7b8a8cdbe7f84234bdd99e93a9049a7918 /st.c | |
parent | 91ec5f9e39cf54dd7a157addb778293853571f13 (diff) |
sync RClass::ext::iv_index_tbl
iv_index_tbl manages instance variable indexes (ID -> index).
This data structure should be synchronized with other ractors
so introduce some VM locks.
This patch also introduced atomic ivar cache used by
set/getinlinecache instructions. To make updating ivar cache (IVC),
we changed iv_index_tbl data structure to manage (ID -> entry)
and an entry points serial and index. IVC points to this entry so
that cache update becomes atomically.
Notes
Notes:
Merged: https://github.com/ruby/ruby/pull/3662
Diffstat (limited to 'st.c')
-rw-r--r-- | st.c | 15 |
1 files changed, 15 insertions, 0 deletions
@@ -2238,4 +2238,19 @@ rb_hash_bulk_insert_into_st_table(long argc, const VALUE *argv, VALUE hash) else st_insert_generic(tab, argc, argv, hash); } + +// to iterate iv_index_tbl +st_data_t +rb_st_nth_key(st_table *tab, st_index_t index) +{ + if (LIKELY(tab->entries_start == 0 && + tab->num_entries == tab->entries_bound && + index < tab->num_entries)) { + return tab->entries[index].key; + } + else { + rb_bug("unreachable"); + } +} + #endif |