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@@ -0,0 +1,49 @@
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+/*
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+ * Copyright (c) 2006-2021, RT-Thread Development Team
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+ *
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+ * SPDX-License-Identifier: Apache-2.0
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+ *
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+ * Change Logs:
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+ * Date Author Notes
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+ * 2021-09-11 Meco Man First version
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+ */
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+#ifndef __POLL_H__
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+#define __POLL_H__
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+
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+#ifdef __cplusplus
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+extern "C" {
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+#endif
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+
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+#if !defined(POLLIN) && !defined(POLLOUT)
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+#define POLLIN (0x01)
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+#define POLLRDNORM (0x01)
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+#define POLLRDBAND (0x01)
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+#define POLLPRI (0x01)
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+
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+#define POLLOUT (0x02)
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+#define POLLWRNORM (0x02)
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+#define POLLWRBAND (0x02)
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+
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+#define POLLERR (0x04)
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+#define POLLHUP (0x08)
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+#define POLLNVAL (0x10)
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+
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+typedef unsigned int nfds_t;
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+
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+struct pollfd
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+{
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+ int fd;
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+ short events;
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+ short revents;
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+};
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+#endif /* !defined(POLLIN) && !defined(POLLOUT) */
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+
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+#define POLLMASK_DEFAULT (POLLIN | POLLOUT | POLLRDNORM | POLLWRNORM)
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+
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+int poll(struct pollfd *fds, nfds_t nfds, int timeout);
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+
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+#ifdef __cplusplus
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+}
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+#endif
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+
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+#endif /* __POLL_H__ */
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