1 files changed, 16 insertions, 0 deletions
diff --git a/ext/-test-/thread_fd/thread_fd.c b/ext/-test-/thread_fd/thread_fd.c
index 3d3ec8a2e0..042b799dc8 100644
--- a/ext/-test-/thread_fd/thread_fd.c
+++ b/ext/-test-/thread_fd/thread_fd.c
@@ -7,8 +7,24 @@ thread_fd_close(VALUE ign, VALUE fd)
     return Qnil;
 }
 
+static VALUE
+thread_fd_wait(VALUE ign, VALUE fd)
+{
+    int ret = rb_thread_wait_fd(NUM2INT(fd));
+    return INT2NUM(ret);
+}
+
+static VALUE
+thread_fd_writable(VALUE ign, VALUE fd)
+{
+    int ret = rb_thread_fd_writable(NUM2INT(fd));
+    return INT2NUM(ret);
+}
+
 void
 Init_thread_fd(void)
 {
     rb_define_singleton_method(rb_cIO, "thread_fd_close", thread_fd_close, 1);
+    rb_define_singleton_method(rb_cIO, "thread_fd_wait", thread_fd_wait, 1);
+    rb_define_singleton_method(rb_cIO, "thread_fd_writable", thread_fd_writable, 1);
 }