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8 commits

Author SHA1 Message Date
NARUSE, Yui
bea322a352 Revert "[EXPERIMENTAL] Make Symbol#to_s return a frozen String [Feature #16150]" 
This reverts commit 6ffc045a81.
 2019-11-05 17:30:54 +09:00
Benoit Daloze
6ffc045a81 [EXPERIMENTAL] Make Symbol#to_s return a frozen String 
* Always the same frozen String for a given Symbol.
* Avoids extra allocations whenever calling Symbol#to_s.
* See [Feature #16150]
 2019-09-26 10:23:02 +02:00
John Hawthorn
04bc4c0662 Resize capacity for fstring 
When a string is #frozen, it's capacity is resized to fit (if it is much
larger), since we know it will no longer be mutated.

    > puts ObjectSpace.dump(String.new("a"*30, capacity: 1000))
    {"type":"STRING", "class":"0x7feaf00b7bf0", "bytesize":30, "capacity":1000, "value":"...
    > puts ObjectSpace.dump(String.new("a"*30, capacity: 1000).freeze)
    {"type":"STRING", "class":"0x7feaf00b7bf0", "frozen":true, "bytesize":30, "value":"...

(ObjectSpace.dump doesn't show capacity if capacity is equal to bytesize)

Previously, if we dedup into an fstring, using String#-@, capacity would
not be reduced.

    > puts ObjectSpace.dump(-String.new("a"*30, capacity: 1000))
    {"type":"STRING", "class":"0x7feaf00b7bf0", "frozen":true, "fstring":true, "bytesize":30, "capacity":1000, "value":"...

This commit makes rb_fstring call rb_str_resize, the same as
rb_str_freeze does.

Closes: https://github.com/ruby/ruby/pull/2256
 2019-06-26 15:01:48 +09:00
hsbt
6693e3e723 Fixed misspelling words. 
These are detected by https://github.com/client9/misspell

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@60359 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
 2017-10-22 11:27:06 +00:00
nobu
9f1994ed5c io.c: shrink read buffer 
* io.c (io_setstrbuf): return true if the buffer is newly created.

* io.c (io_set_read_length): shrink the read buffer if it is a new
  object and is too large.  [ruby-core:81370] [Bug #13597]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59701 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
 2017-08-31 08:21:46 +00:00
naruse
d46e2aea71 * string.c (rb_str_init): introduce String.new(capacity: size) 
[Feature #12024]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@53850 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
 2016-02-17 03:21:35 +00:00
hsbt
b7b5692aea * test/-ext-/string/test_capacity.rb: Added missing library. 
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@53674 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
 2016-01-27 12:04:47 +00:00
naruse
d14f0cfd16 Add tests about String's internal capacity 
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@53671 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
 2016-01-27 11:37:02 +00:00