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-rw-r--r--internal/io.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/internal/io.h b/internal/io.h
index f16d9efc9c..1891248a19 100644
--- a/internal/io.h
+++ b/internal/io.h
@@ -15,6 +15,9 @@ struct rb_io;
#include "ruby/io.h" /* for rb_io_t */
+#define IO_WITHOUT_GVL(func, arg) rb_thread_call_without_gvl(func, arg, RUBY_UBF_IO, 0)
+#define IO_WITHOUT_GVL_INT(func, arg) (int)(VALUE)IO_WITHOUT_GVL(func, arg)
+
/** Ruby's IO, metadata and buffers. */
struct rb_io {