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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
50 lines
1.5 KiB
Ruby
50 lines
1.5 KiB
Ruby
# frozen_string_literal: true
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require_relative 'helper'
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class TestPsychRactor < Test::Unit::TestCase
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def test_ractor_round_trip
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assert_ractor(<<~RUBY, require_relative: 'helper')
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obj = {foo: [42]}
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obj2 = Ractor.new(obj) do |obj|
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Psych.unsafe_load(Psych.dump(obj))
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end.value
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assert_equal obj, obj2
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RUBY
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end
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def test_not_shareable
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# There's no point in making these frozen / shareable
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# and the C-ext disregards begin frozen
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assert_ractor(<<~RUBY, require_relative: 'helper')
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parser = Psych::Parser.new
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emitter = Psych::Emitter.new(nil)
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assert_raise(Ractor::Error) { Ractor.make_shareable(parser) }
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assert_raise(Ractor::Error) { Ractor.make_shareable(emitter) }
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RUBY
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end
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def test_ractor_config
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# Config is ractor-local
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# Test is to make sure it works, even though usage is probably very low.
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# The methods are not documented and might be deprecated one day
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assert_ractor(<<~RUBY, require_relative: 'helper')
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r = Ractor.new do
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Psych.add_builtin_type 'omap' do |type, val|
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val * 2
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end
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Psych.load('--- !!omap hello')
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end.value
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assert_equal 'hellohello', r
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assert_equal 'hello', Psych.load('--- !!omap hello')
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RUBY
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end
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def test_ractor_constants
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assert_ractor(<<~RUBY, require_relative: 'helper')
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r = Ractor.new do
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Psych.libyaml_version.join('.') == Psych::LIBYAML_VERSION
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end.value
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assert_equal true, r
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RUBY
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end
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end if defined?(Ractor)
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