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author | normal <normal@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2017-01-30 20:40:18 +0000 |
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committer | normal <normal@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2017-01-30 20:40:18 +0000 |
commit | 9c4ba969a567450bee08211cc3ed1d2fa4655831 (patch) | |
tree | 7d3adc431d4d4e83794b8bcdc769953d74137343 /internal.h | |
parent | 886e8f75caa5428b5eaf76ce80a74d89380b1aca (diff) |
io.c: recycle garbage on write
* string.c (STR_IS_SHARED_M): new flag to mark shared mulitple times
(STR_SET_SHARED): set STR_IS_SHARED_M
(rb_str_tmp_frozen_acquire, rb_str_tmp_frozen_release): new functions
(str_new_frozen): set/unset STR_IS_SHARED_M as appropriate
* internal.h: declare new functions
* io.c (fwrite_arg, fwrite_do, fwrite_end): new
(io_fwrite): use new functions
Introduce rb_str_tmp_frozen_acquire and rb_str_tmp_frozen_release
to manage a hidden, frozen string. Reuse one bit of the embed
length for shared strings as STR_IS_SHARED_M to indicate a string
has been shared multiple times. In the common case, the string
is only shared once so the object slot can be reclaimed immediately.
minimum results in each 3 measurements. (time and size)
Execution time (sec)
name trunk built
io_copy_stream_write 0.682 0.254
io_copy_stream_write_socket 1.225 0.751
Speedup ratio: compare with the result of `trunk' (greater is better)
name built
io_copy_stream_write 2.680
io_copy_stream_write_socket 1.630
Memory usage (last size) (B)
name trunk built
io_copy_stream_write 95436800.000 6512640.000
io_copy_stream_write_socket 117628928.000 7127040.000
Memory consuming ratio (size) with the result of `trunk' (greater is better)
name built
io_copy_stream_write 14.654
io_copy_stream_write_socket 16.505
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@57469 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'internal.h')
-rw-r--r-- | internal.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/internal.h b/internal.h index fada2e8023..3e5550f4ca 100644 --- a/internal.h +++ b/internal.h @@ -1475,6 +1475,8 @@ VALUE rb_id_quote_unprintable(ID); char *rb_str_fill_terminator(VALUE str, const int termlen); void rb_str_change_terminator_length(VALUE str, const int oldtermlen, const int termlen); VALUE rb_str_locktmp_ensure(VALUE str, VALUE (*func)(VALUE), VALUE arg); +VALUE rb_str_tmp_frozen_acquire(VALUE str); +void rb_str_tmp_frozen_release(VALUE str, VALUE tmp); VALUE rb_str_chomp_string(VALUE str, VALUE chomp); #ifdef RUBY_ENCODING_H VALUE rb_external_str_with_enc(VALUE str, rb_encoding *eenc); |