Загрузил(а) файлы в ''

device_ring_buffer.c

@@ -0,0 +1,64 @@
+#include "device_ring_buffer.h"
+
+void rb_initialize(struct rb* _rb)
+{
+    memset(_rb, 0, sizeof(struct rb));
+}
+
+int rb_put(struct rb* _rb, char element)
+{
+    if (_rb->count < sizeof(_rb->buf))
+    {
+        _rb->count++;
+        if (_rb->tail != _rb->head)
+        {
+            _rb->buf[_rb->tail] = element;
+            _rb->tail++;
+            if (_rb->tail == sizeof(_rb->buf))
+            {
+             _rb->tail = 0;
+            }
+            return 1;
+        }
+        else
+        {
+            return 0;
+        }
+    } 
+    else 
+    {
+        return -1;
+    }
+   
+}
+
+int rb_get(struct rb* _rb, char *element)
+{
+    if (_rb->count > 0)
+    {
+        _rb->count--;
+        if (_rb->tail != _rb->head)
+        {
+            *element = _rb->buf[_rb->head];
+            _rb->head++;
+            if (_rb->head == sizeof(_rb->buf))
+            {
+                _rb->head = 0;
+            }
+            return 1;
+        }
+        else
+        {
+            return 0;
+        }
+    } 
+    else
+    {
+        return -1;
+    }
+
+}
+int count_elements(struct rb* _rb)
+{
+    return _rb->count;
+}

device_ring_buffer.h

@@ -0,0 +1,18 @@
+#ifndef DEVICE_RING_BUFFER_H
+#define DEVICE_RING_BUFFER_H
+#include <stdio.h>
+#include <string.h>
+
+struct rb {
+    char buf[32];
+    int head;
+    int tail;
+    int count;
+};
+
+void rb_initialize(struct rb* _rb);
+int rb_put(struct rb* _rb, char element);
+int rb_get(struct rb* _rb, char* element);
+int count_elements(struct rb* _rb);
+
+#endif /*DEVICE_RING_BUFFER_H*/