MN: skip waiting on `read_nonblock'

if the IO for `IO#read_nonblock` is not ready, it needs to return (or raise) immediately.
ruby · Dec 22, 2023 · beec3d0 · beec3d0
1 parent 2fe9e08
commit beec3d0
Showing 1 changed file with 6 additions and 1 deletion.
diff --git a/io.c b/io.c
@@ -3410,7 +3410,12 @@ io_read_memory_call(VALUE arg)
         }
     }
 
-    return rb_thread_io_blocking_call(internal_read_func, iis, iis->fptr->fd, RB_WAITFD_IN);
+    if (iis->nonblock) {
+        return rb_thread_io_blocking_call(internal_read_func, iis, iis->fptr->fd, 0);
+    }
+    else {
+        return rb_thread_io_blocking_call(internal_read_func, iis, iis->fptr->fd, RB_WAITFD_IN);
+    }
 }
 
 static long