Changeset 49698fa in mainline for uspace/drv/ns8250/cyclic_buffer.h

Timestamp:

2010-10-23T10:25:37Z (14 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

663f41c4

Parents:

472020fc

Message:

Cstyle fixes in ns8250 driver.

File:

• uspace/drv/ns8250/cyclic_buffer.h (modified) (3 diffs)

uspace/drv/ns8250/cyclic_buffer.h

@@ -1 +1 @@
 /*
- * Copyright (c) 2010 Lenka Trochtova 
+ * Copyright (c) 2010 Lenka Trochtova
  * All rights reserved.
  *
@@ -32 +32 @@
 /** @file
  */
- 
-#ifndef CYCLIC_BUFFER_H
-#define CYCLIC_BUFFER_H
 
-#define BUF_LEN 256  // the length of the buffer
+#ifndef CYCLIC_BUFFER_H_
+#define CYCLIC_BUFFER_H_
+
+#define BUF_LEN 256
 
 typedef struct cyclic_buffer {
-        uint8_t buf[BUF_LEN];  // the buffer 
+        uint8_t buf[BUF_LEN];
         int start;
         int cnt;
-}  cyclic_buffer_t; 
+}  cyclic_buffer_t;
 
-// returns false if the buffer is full
-static inline bool buf_push_back(cyclic_buffer_t *buf, uint8_t item) 
+/*
+ * @returns             False if the buffer is full.
+ */
+static inline bool buf_push_back(cyclic_buffer_t *buf, uint8_t item)
 {
-        if (buf->cnt >= BUF_LEN) {
+        if (buf->cnt >= BUF_LEN)
                 return false;
-        }
-        
         int pos = (buf->start + buf->cnt) % BUF_LEN;
         buf->buf[pos] = item;
@@ -57 +57 @@
 }
 
-static inline bool buf_is_empty(cyclic_buffer_t *buf) 
+static inline bool buf_is_empty(cyclic_buffer_t *buf)
 {
         return buf->cnt == 0;
 }
 
-// call it on non empty buffer!
-static inline uint8_t buf_pop_front(cyclic_buffer_t *buf) 
+static inline uint8_t buf_pop_front(cyclic_buffer_t *buf)
 {
         assert(!buf_is_empty(buf));
         
         uint8_t res = buf->buf[buf->start];
-        buf->start = (buf->start + 1) % BUF_LEN;        
+        buf->start = (buf->start + 1) % BUF_LEN;
         buf->cnt--;
         return res;
 }
 
-static inline void buf_clear(cyclic_buffer_t *buf) 
+static inline void buf_clear(cyclic_buffer_t *buf)
 {
         buf->cnt = 0;