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author | watson1978 <watson1978@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2017-05-24 06:57:08 +0000 |
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committer | watson1978 <watson1978@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2017-05-24 06:57:08 +0000 |
commit | 53c88c6d79993da468c48f62e7402fdb980c1002 (patch) | |
tree | 41810a35a0aa787ca77253e4afd526c48c6b2c11 /id_table.c | |
parent | a800231e9d9220f39513a427ee30b5d5a02f7c05 (diff) | |
download | ruby-53c88c6d79993da468c48f62e7402fdb980c1002.tar.gz |
Improve performance in where push the element into non shared Array object
* array.c (ary_ensure_room_for_push): use rb_ary_modify_check() instead of
rb_ary_modify() to check whether the object can be modified for non shared
Array object. rb_ary_modify() has the codes for shared Array object too.
In here, it has condition branch for shared / non shared Array object and
it can use rb_ary_modify_check() which is smaller function than
rb_ary_modify() for non shared object.
rb_ary_modify_check() will be expand as inline function.
If it will compile with GCC, Array#<< will be faster around 8%.
[ruby-core:81082] [Bug #13553] [Fix GH-1609]
## Clang 802.0.42
### Before
Array#<< 9.353M (± 1.7%) i/s - 46.787M in 5.004123s
Array#push 7.702M (± 1.1%) i/s - 38.577M in 5.009338s
Array#values_at 6.133M (± 1.9%) i/s - 30.699M in 5.007772s
### After
Array#<< 9.458M (± 2.0%) i/s - 47.357M in 5.009069s
Array#push 7.921M (± 1.8%) i/s - 39.665M in 5.009151s
Array#values_at 6.377M (± 2.3%) i/s - 31.881M in 5.001888s
### Result
Array#<< -> 1.2% faster
Array#push -> 2.8% faster
Array#values_at -> 3.9% faster
## GCC 7.1.0
### Before
Array#<< 10.497M (± 1.1%) i/s - 52.665M in 5.017601s
Array#push 8.527M (± 1.6%) i/s - 42.777M in 5.018003s
Array#values_at 7.621M (± 1.7%) i/s - 38.152M in 5.007910s
### After
Array#<< 11.403M (± 1.3%) i/s - 57.028M in 5.001849s
Array#push 8.924M (± 1.3%) i/s - 44.609M in 4.999940s
Array#values_at 8.291M (± 1.4%) i/s - 41.487M in 5.004727s
### Result
Array#<< -> 8.3% faster
Array#push -> 4.3% faster
Array#values_at -> 8.7% faster
## Test code
require 'benchmark/ips'
Benchmark.ips do |x|
x.report "Array#<<" do |i|
i.times { [1,2] << 3 }
end
x.report "Array#push" do |i|
i.times { [1,2].push(3) }
end
x.report "Array#values_at" do |i|
ary = [1, 2, 3, 4, 5]
i.times { ary.values_at(0, 2, 4) }
end
end
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58867 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'id_table.c')
0 files changed, 0 insertions, 0 deletions