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9 commits

Author SHA1 Message Date
Koichi Sasada
af2471365f refactoring rb_ractor_confirm_belonging() 
rb_ractor_belonging() returns 0 only if it has sharable flag.
rb_ractor_confirm_belonging() checks rb_ractor_shareable_p()
if the belonging ractor id is different from current ractor id.
 2020-10-21 23:52:11 +09:00
Koichi Sasada
b59077eecf Ractor-safe rb_objspace_reachable_objects_from 
rb_objspace_reachable_objects_from(obj) is used to traverse all
reachable objects from obj. This function modify objspace but it
is not ractor-safe (thread-safe). This patch fix the problem.

Strategy:
(1) call GC mark process during_gc
(2) call Ractor-local custom mark func when !during_gc
 2020-10-21 16:15:22 +09:00
Koichi Sasada
99310e3eb5 Some global variables can be accessed from ractors 
Some global variables should be used from non-main Ractors.
[Bug #17268]

```ruby
     # ractor-local (derived from created ractor): debug
     '$DEBUG' => $DEBUG,
     '$-d' => $-d,

     # ractor-local (derived from created ractor): verbose
     '$VERBOSE' => $VERBOSE,
     '$-w' => $-w,
     '$-W' => $-W,
     '$-v' => $-v,

     # process-local (readonly): other commandline parameters
     '$-p' => $-p,
     '$-l' => $-l,
     '$-a' => $-a,

     # process-local (readonly): getpid
     '$$'  => $$,

     # thread local: process result
     '$?'  => $?,

     # scope local: match
     '$~'  => $~.inspect,
     '$&'  => $&,
     '$`'  => $`,
     '$\''  => $',
     '$+'  => $+,
     '$1'  => $1,

     # scope local: last line
     '$_' => $_,

     # scope local: last backtrace
     '$@' => $@,
     '$!' => $!,

     # ractor local: stdin, out, err
     '$stdin'  => $stdin.inspect,
     '$stdout' => $stdout.inspect,
     '$stderr' => $stderr.inspect,
```
 2020-10-20 15:38:54 +09:00
Koichi Sasada
319afed20f Use language TLS specifier if it is possible. 
To access TLS, it is faster to use language TLS specifier instead
of using pthread_get/setspecific functions.

Original proposal is: Use native thread locals. #3665
 2020-10-20 01:05:06 +09:00
tompng
e8d03c9a2a change rb_ractor_queue to ring buffer 2020-10-12 14:20:58 +09:00
Benoit Daloze
bfc1c7205d Add Ractor#receive and Ractor.receive and use it in all places 
* Keep Ractor#recv/Ractor.recv as an alias for now.
 2020-10-10 12:48:09 +02:00
Koichi Sasada
7ad3aff48d Ractor#close_outgoping cancel Ractor.yield 
Ractor#close_outgoing should cancel waiting Ractor.yield. However,
yield a value by the Ractor's block should not cancel (to recognize
terminating Ractor, introduce rb_ractor_t::yield_atexit flag).
 2020-09-25 00:25:38 +09:00
Koichi Sasada
06e9b94d40 show object info to debug purpose. 2020-09-18 14:17:49 +09:00
Koichi Sasada
79df14c04b Introduce Ractor mechanism for parallel execution 
This commit introduces Ractor mechanism to run Ruby program in
parallel. See doc/ractor.md for more details about Ractor.
See ticket [Feature #17100] to see the implementation details
and discussions.

[Feature #17100]

This commit does not complete the implementation. You can find
many bugs on using Ractor. Also the specification will be changed
so that this feature is experimental. You will see a warning when
you make the first Ractor with `Ractor.new`.

I hope this feature can help programmers from thread-safety issues.
 2020-09-03 21:11:06 +09:00