import RT-Thread@9217865c without bsp, libcpu and components/net

components/drivers/include/ipc/pipe.h

@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 2006-2023, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ */
+
+#ifndef PIPE_H__
+#define PIPE_H__
+
+#include <rtthread.h>
+
+/**
+ * Pipe Device
+ */
+
+struct rt_pipe_device
+{
+    struct rt_device parent;
+    rt_bool_t is_named;
+#ifdef RT_USING_POSIX_DEVIO
+    int pipeno; /* for unamed pipe */
+#endif
+
+    /* ring buffer in pipe device */
+    struct rt_ringbuffer *fifo;
+    rt_uint16_t bufsz;
+
+    rt_wqueue_t reader_queue;
+    rt_wqueue_t writer_queue;
+    int writer;
+    int reader;
+
+    struct rt_mutex lock;
+};
+typedef struct rt_pipe_device rt_pipe_t;
+
+rt_pipe_t *rt_pipe_create(const char *name, int bufsz);
+int rt_pipe_delete(const char *name);
+
+#endif /* PIPE_H__ */