To prevent the following strange error, prepare IDs at first.
```
<internal:ractor>:596:in 'Ractor#monitor': symbol :exited is already registered with 98610c (fatal)
from <internal:ractor>:550:in 'Ractor#join'
from <internal:ractor>:574:in 'Ractor#value'
from bootstraptest.test_ractor.rb_2013_1309.rb:12:in '<main>'
```
BTW, the error should be fixed on ID management system.
`make test-bundler-parallel` prints many errors, so try to
downgrade rake version.
```
219) bundle install --standalone run in a subdirectory with --binstubs creates stubs that can be symlinked
Failure/Error:
raise <<~ERROR
#{error_header}
----------------------------------------------------------------------
#{stdboth}
----------------------------------------------------------------------
ERROR
RuntimeError:
Commands:
$ /home/ko1/ruby/build/trunk/ruby -I/home/ko1/ruby/src/trunk/spec/bundler -r/home/ko1/ruby/src/trunk/spec/bundler/support/artifice/compact_index.rb -r/home/ko1/ruby/src/trunk/spec/bundler/support/hax.rb /home/ko1/ruby/src/trunk/tmp/2.13/gems/system/bin/bundle config set --local path /home/ko1/ruby/src/trunk/tmp/2.13/bundled_app/bundle
# $? => 0
Invoking `/home/ko1/ruby/build/trunk/ruby -I/home/ko1/ruby/src/trunk/spec/bundler -r/home/ko1/ruby/src/trunk/spec/bundler/support/artifice/compact_index.rb -r/home/ko1/ruby/src/trunk/spec/bundler/support/hax.rb /home/ko1/ruby/src/trunk/tmp/2.13/gems/system/bin/bundle install --standalone --binstubs` failed with output:
----------------------------------------------------------------------
[DEPRECATED] The --binstubs option will be removed in favor of `bundle binstubs --all`
Could not find compatible versions
Because every version of rails depends on rake = 13.3.0
and rake = 13.3.0 could not be found in rubygems repository https://gem.repo1/ or installed locally,
rails cannot be used.
So, because Gemfile depends on rails >= 0,
version solving has failed.
Fetching gem metadata from https://gem.repo1/...
Resolving dependencies...
----------------------------------------------------------------------
Shared Example Group: "bundle install --standalone" called from ./spec/bundler/install/gems/standalone_spec.rb:532
# /home/ko1/ruby/src/trunk/spec/bundler/support/command_execution.rb:26:in 'Spec::CommandExecution#raise_error!'
# /home/ko1/ruby/src/trunk/spec/bundler/support/subprocess.rb:66:in 'Spec::Subprocess#sh'
# /home/ko1/ruby/src/trunk/spec/bundler/support/helpers.rb:216:in 'Spec::Helpers#sys_exec'
# /home/ko1/ruby/src/trunk/spec/bundler/support/helpers.rb:107:in 'Spec::Helpers#bundle'
# /home/ko1/ruby/src/trunk/spec/bundler/install/gems/standalone_spec.rb:482:in 'block (3 levels) in <top (required)>'
# /home/ko1/ruby/src/trunk/spec/bundler/spec_helper.rb:107:in 'block (4 levels) in <top (required)>'
# /home/ko1/ruby/src/trunk/spec/bundler/spec_helper.rb:107:in 'block (3 levels) in <top (required)>'
# /home/ko1/ruby/src/trunk/spec/bundler/support/helpers.rb:355:in 'block in Spec::Helpers#with_gem_path_as'
# /home/ko1/ruby/src/trunk/spec/bundler/support/helpers.rb:369:in 'Spec::Helpers#without_env_side_effects'
# /home/ko1/ruby/src/trunk/spec/bundler/support/helpers.rb:350:in 'Spec::Helpers#with_gem_path_as'
# /home/ko1/ruby/src/trunk/spec/bundler/spec_helper.rb:106:in 'block (2 levels) in <top (required)>'
```
RDoc markdown parser requires exact 4 spaces or tab as indentation.
Also the first nested bullet list must be separated from the enclosing
bullet list item by a blank line.
```
1) Failure:
TestProcess#test_warmup_frees_pages [/tmp/ruby/src/trunk-random1/test/ruby/test_process.rb:2772]:
<164348> expected but was
<165985>.
```
can someone investigate it?
* 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
Remove the unused constant HAS_MOVED_GFIELDSTBL and related methods.
In the mmtk/mmtk-ruby repo, we are now able to find the global field
(IV) table of a moved object during copying GC without using the
HAS_MOVED_GFIELDSTBL bit. We synchronize some of the code, although we
haven't implemented moving GC in ruby/mmtk, yet.
See: 13080acdf5https://github.com/ruby/mmtk/commit/400ba4e747
MAX_IV_COUNT is a hint which determines the size of variable width
allocation we should use for a given class. We don't need to scope this
by namespace, if we end up with larger builtin objects on some
namespaces that isn't a user-visible problem, just extra memory use.
Similarly variation_count is used to track if a given object has had too
many branches in shapes it has used, and to use too_complex when that
happens. That's also just a hint, so we can use the same value across
namespaces without it being visible to users.
Previously variation_count was being incremented (written to) on the
RCLASS_EXT_READABLE ext, which seems incorrect if we wanted it to be
different across namespaces
When creating fibers in multiple ractors at the same time there were
issues with the manipulation of this structure, causing segfaults.
I didn't add any tests for this because I'm making a more general
PR in the very near future to be able to run test methods (test-all suite)
inside multiple ractors at the same time. This is how this bug was
caught, running test/ruby/test_fiber.rb inside 10 ractors at once.
Previously we used a flag to set whether a module was uninitialized.
When checked whether a class was initialized, we first had to check that
it had a non-zero superclass, as well as that it wasn't BasicObject.
With the advent of namespaces, RCLASS_SUPER is now an expensive
operation, and though we could just check for the prime superclass, we
might as well take this opportunity to use a flag so that we can perform
the initialized check with as few instructions as possible.
It's possible in the future that we could prevent uninitialized classes
from being available to the user, but currently there are a few ways to
do that.
If any other flags were passed other than type they were ignored, so we
might as well be more explicit that that's all this accepts. This also
fixes the incorrect (internal) documentation.
It also turns out type is always known in the caller, so I made it
explicit in the two places additional flags were being passed.
