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author | shyouhei <shyouhei@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2017-04-27 04:21:04 +0000 |
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committer | shyouhei <shyouhei@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2017-04-27 04:21:04 +0000 |
commit | b575b934d80216969543535b0a05ffaab8ea030b (patch) | |
tree | 1107864822da8ed3c2babd7ca9d8015c8a641654 /test/csv/test_data_converters.rb | |
parent | 3cd04c26ae9cd06462515f79063059d6051e666d (diff) | |
download | ruby-b575b934d80216969543535b0a05ffaab8ea030b.tar.gz |
refactor newhash (revision 58463 another try) [fix GH-1600]
* st.c (rb_hash_bulk_insert): new API to bulk insert entries
into a hash. Given arguments are first inserted into the
table at once, then reindexed. This is faster than inserting
things using rb_hash_aset() one by one.
This arrangement (rb_ prefixed function placed in st.c) is
unavoidable because it both touches table internal and write
barrier at once.
* internal.h: delcare the new function.
* hash.c (rb_hash_s_create): use the new function.
* vm.c (core_hash_merge): ditto.
* insns.def (newhash): ditto.
* test/ruby/test_hash.rb: more coverage on hash creation.
* test/ruby/test_literal.rb: ditto.
-----------------------------------------------------------
benchmark results:
minimum results in each 7 measurements.
Execution time (sec)
name before after
loop_whileloop2 0.136 0.137
vm2_bighash* 1.249 0.623
Speedup ratio: compare with the result of `before' (greater is better)
name after
loop_whileloop2 0.996
vm2_bighash* 2.004
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58492 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'test/csv/test_data_converters.rb')
0 files changed, 0 insertions, 0 deletions