Issue #8882 has been reported by Glass_saga (Masaki Matsushita).

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Feature #8882: rb_obj_is_mutex() into include/ruby/intern.h
https://bugs.ruby-lang.org/issues/8882

Author: Glass_saga (Masaki Matsushita)
Status: Open
Priority: Normal
Assignee: 
Category: 
Target version: current: 2.1.0


rb_obj_is_mutex() is currently an internal API function.
However, this function is useful for C extension developers to distinguish between Mutex and other objects extended by Mutex_m.
I want to use it in ext/thread/thread.c for this purpose.


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