ruby/prelude.rb

38 строки
806 B
Ruby
Исходник Обычный вид История

class << Thread
# call-seq:
2019-05-04 16:31:21 +03:00
# Thread.exclusive { block } -> obj
#
# Wraps the block in a single, VM-global Mutex.synchronize, returning the
# value of the block. A thread executing inside the exclusive section will
# only block other threads which also use the Thread.exclusive mechanism.
def exclusive(&block) end if false
mutex = Mutex.new # :nodoc:
define_method(:exclusive) do |&block|
warn "Thread.exclusive is deprecated, use Thread::Mutex", uplevel: 1
mutex.synchronize(&block)
end
end
io.c: avoid kwarg parsing in C API * benchmark/bm_io_nonblock_noex2.rb: new benchmark based on bm_io_nonblock_noex.rb * io.c (io_read_nonblock): move documentation to prelude.rb (io_write_nonblock): ditto (Init_io): private, internal methods for prelude.rb use only * prelude.rb (IO#read_nonblock): wrapper + documentation (IO#write_nonblock): ditto [ruby-core:71439] [Feature #11339] rb_scan_args and hash lookups for kwargs in the C API are clumsy and slow. Instead of improving the C API for performance, use Ruby instead :) Implement IO#read_nonblock and IO#write_nonblock in prelude.rb to avoid argument parsing via rb_scan_args and hash lookups. This speeds up IO#write_nonblock and IO#read_nonblock benchmarks in both cases, including the original non-idiomatic case where the `exception: false' hash is pre-allocated to avoid GC pressure. Now, writing the kwargs in natural, idiomatic Ruby is fastest. I've added the noex2 benchmark to show this. 2015-11-12 01:41:12 +0000 target 0: a (ruby 2.3.0dev (2015-11-11 trunk 52540) [x86_64-linux]) target 1: b (ruby 2.3.0dev (2015-11-11 avoid-kwarg-capi 52540) ----------------------------------------------------------- benchmark results: minimum results in each 10 measurements. Execution time (sec) name a b io_nonblock_noex 2.508 2.382 io_nonblock_noex2 2.950 1.882 Speedup ratio: compare with the result of `a' (greater is better) name b io_nonblock_noex 1.053 io_nonblock_noex2 1.567 git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52541 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2015-11-12 05:00:41 +03:00
class Binding
# :nodoc:
def irb
require 'irb'
irb
end
# suppress redefinition warning
alias irb irb # :nodoc:
end
module Kernel
def pp(*objs)
require 'pp'
pp(*objs)
end
# suppress redefinition warning
alias pp pp # :nodoc:
private :pp
end