diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/ruby/internal/intern/thread.h | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/include/ruby/internal/intern/thread.h b/include/ruby/internal/intern/thread.h index c9f476744a..294e552fe9 100644 --- a/include/ruby/internal/intern/thread.h +++ b/include/ruby/internal/intern/thread.h @@ -463,8 +463,17 @@ VALUE rb_mutex_unlock(VALUE mutex); * * This function is called from `ConditionVariable#wait`. So it is not a * deprecated feature. However @shyouhei have never seen any similar mutex - * primitive available in any other language than Ruby. Is this a right - * design? Maybe isn't it too complex a primitive? + * primitive available in any other languages than Ruby. + * + * EDIT: In 2021, @shyouhei asked @ko1 in person about this API. He answered + * that it is his invention. The motivation behind its design is to eliminate + * needs of condition variables as primitives. Unlike other languages, Ruby's + * `ConditionVariable` class was written in pure-Ruby initially. We don't have + * to implement machine-native condition variables in assembly each time we + * port Ruby to a new architecture. This function made it possible. "I felt I + * was a genius when this idea came to me", said @ko1. + * + * `rb_cConditionVariable` is now written in C for speed, though. */ VALUE rb_mutex_sleep(VALUE self, VALUE timeout); |