GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

source/bootloader/u-boot-2020.01/include/circbuf.h

@@ -0,0 +1,26 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * (C) Copyright 2003
+ * Gerry Hamel, geh@ti.com, Texas Instruments
+ */
+
+#ifndef __CIRCBUF_H__
+#define __CIRCBUF_H__
+
+typedef struct circbuf {
+	unsigned int size;	/* current number of bytes held */
+	unsigned int totalsize; /* number of bytes allocated */
+
+	char *top;		/* pointer to current buffer start */
+	char *tail;		/* pointer to space for next element */
+
+	char *data;		/* all data */
+	char *end;		/* end of data buffer */
+} circbuf_t;
+
+int buf_init (circbuf_t * buf, unsigned int size);
+int buf_free (circbuf_t * buf);
+int buf_pop (circbuf_t * buf, char *dest, unsigned int len);
+int buf_push (circbuf_t * buf, const char *src, unsigned int len);
+
+#endif