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
45 lines
1.0 KiB
Ruby
45 lines
1.0 KiB
Ruby
# frozen_string_literal: true
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require_relative 'test_helper'
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begin
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require_relative './lib/helper'
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rescue LoadError
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end
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class JSONInRactorTest < Test::Unit::TestCase
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def test_generate
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pid = fork do
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r = Ractor.new do
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json = JSON.generate({
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'a' => 2,
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'b' => 3.141,
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'c' => 'c',
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'd' => [ 1, "b", 3.14 ],
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'e' => { 'foo' => 'bar' },
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'g' => "\"\0\037",
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'h' => 1000.0,
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'i' => 0.001
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})
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JSON.parse(json)
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end
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expected_json = JSON.parse('{"a":2,"b":3.141,"c":"c","d":[1,"b",3.14],"e":{"foo":"bar"},' +
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'"g":"\\"\\u0000\\u001f","h":1000.0,"i":0.001}')
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actual_json = r.value
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if expected_json == actual_json
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exit 0
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else
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puts "Expected:"
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puts expected_json
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puts "Acutual:"
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puts actual_json
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puts
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exit 1
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end
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end
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_, status = Process.waitpid2(pid)
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assert_predicate status, :success?
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end
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end if defined?(Ractor) && Process.respond_to?(:fork)
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