1 files changed, 30 insertions, 0 deletions
diff --git a/ext/-test-/thread_fd/thread_fd.c b/ext/-test-/thread_fd/thread_fd.c
new file mode 100644
index 0000000000..042b799dc8
--- /dev/null
+++ b/ext/-test-/thread_fd/thread_fd.c
@@ -0,0 +1,30 @@
+#include "ruby/ruby.h"
+
+static VALUE
+thread_fd_close(VALUE ign, VALUE fd)
+{
+    rb_thread_fd_close(NUM2INT(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);
+}