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ef2bb61018
* Added `Ractor::Port`
* `Ractor::Port#receive` (support multi-threads)
* `Rcator::Port#close`
* `Ractor::Port#closed?`
* Added some methods
* `Ractor#join`
* `Ractor#value`
* `Ractor#monitor`
* `Ractor#unmonitor`
* Removed some methods
* `Ractor#take`
* `Ractor.yield`
* Change the spec
* `Racotr.select`
You can wait for multiple sequences of messages with `Ractor::Port`.
```ruby
ports = 3.times.map{ Ractor::Port.new }
ports.map.with_index do |port, ri|
Ractor.new port,ri do |port, ri|
3.times{|i| port << "r#{ri}-#{i}"}
end
end
p ports.each{|port| pp 3.times.map{port.receive}}
```
In this example, we use 3 ports, and 3 Ractors send messages to them respectively.
We can receive a series of messages from each port.
You can use `Ractor#value` to get the last value of a Ractor's block:
```ruby
result = Ractor.new do
heavy_task()
end.value
```
You can wait for the termination of a Ractor with `Ractor#join` like this:
```ruby
Ractor.new do
some_task()
end.join
```
`#value` and `#join` are similar to `Thread#value` and `Thread#join`.
To implement `#join`, `Ractor#monitor` (and `Ractor#unmonitor`) is introduced.
This commit changes `Ractor.select()` method.
It now only accepts ports or Ractors, and returns when a port receives a message or a Ractor terminates.
We removes `Ractor.yield` and `Ractor#take` because:
* `Ractor::Port` supports most of similar use cases in a simpler manner.
* Removing them significantly simplifies the code.
We also change the internal thread scheduler code (thread_pthread.c):
* During barrier synchronization, we keep the `ractor_sched` lock to avoid deadlocks.
This lock is released by `rb_ractor_sched_barrier_end()`
which is called at the end of operations that require the barrier.
* fix potential deadlock issues by checking interrupts just before setting UBF.
https://bugs.ruby-lang.org/issues/21262
27 lines
774 B
Ruby
27 lines
774 B
Ruby
# frozen_string_literal: true
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require 'test/unit'
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require 'date'
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class TestDateParseRactor < Test::Unit::TestCase
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def code(klass = Date, share: false)
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<<~RUBY.gsub('Date', klass.name)
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share = #{share}
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d = Date.parse('Aug 23:55')
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Ractor.make_shareable(d) if share
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d2, d3 = Ractor.new(d) { |d| [d, Date.parse(d.to_s)] }.value
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if share
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assert_same d, d2
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else
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assert_equal d, d2
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end
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assert_equal d, d3
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RUBY
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end
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def test_date_ractor
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assert_ractor(code , require: 'date')
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assert_ractor(code( share: true), require: 'date')
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assert_ractor(code(DateTime ), require: 'date')
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assert_ractor(code(DateTime, share: true), require: 'date')
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end
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end
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