io.c: fix race between read and close * io.c (io_fillbuf): fix race between read and close, in the case the IO gets closed before the reading thread achieve the lock. [ruby-core:78845] [Bug #13076] thread.c: fix race between read and close * thread.c (rb_thread_fd_close): wait until all threads using the fd finish the operation, not to free the buffer in use. [ruby-core:78845] [Bug #13076] revert a part of r57199 * io.c (io_fillbuf): revert a part of r57199 because it broke IO#getch. see also [Bug #13076] io.c: fix race between read and close * io.c (io_fillbuf): fix race between read and close and bail out in the case the IO gets closed before the reading thread achieve the lock. [ruby-core:78845] [Bug #13076]
merge revision(s) 57199,57202,57206,57224: [Backport #13076]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_2@58093 b2dd03c8-39d4-4d8f-98ff-823fe69b080e