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Project/Src/rt-thread/components/drivers/include/ipc/pipe.h

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+/*
+ * Copyright (c) 2006-2018, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ */
+#ifndef PIPE_H__
+#define PIPE_H__
+
+/**
+ * Pipe Device
+ */
+#include <rtthread.h>
+#include <rtdevice.h>
+
+#ifndef RT_PIPE_BUFSZ
+#define PIPE_BUFSZ    512
+#else
+#define PIPE_BUFSZ    RT_PIPE_BUFSZ
+#endif
+
+struct rt_pipe_device
+{
+    struct rt_device parent;
+
+    /* ring buffer in pipe device */
+    struct rt_ringbuffer *fifo;
+    rt_uint16_t bufsz;
+
+    rt_uint8_t readers;
+    rt_uint8_t writers;
+
+    rt_wqueue_t reader_queue;
+    rt_wqueue_t writer_queue;
+
+    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__ */