X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=fifo.h;h=749136530a2c5410867f10caf672c155949daa2f;hp=6a9115d48e4561702325b1921da191444b95f9eb;hb=45054cbec0e624de3b79a795d7dfe1c64cdea934;hpb=e28875637094451a3c5ec4071f964c1a02dd8f5b

diff --git a/fifo.h b/fifo.h
index 6a9115d4..74913653 100644
--- a/fifo.h
+++ b/fifo.h
@@ -28,21 +28,31 @@ struct fifo {
 struct fifo *fifo_alloc(unsigned int);
 unsigned int fifo_put(struct fifo *, void *, unsigned int);
 unsigned int fifo_get(struct fifo *, void *, unsigned int);
+void fifo_free(struct fifo *);
 
 static inline unsigned int fifo_len(struct fifo *fifo)
 {
 	return fifo->in - fifo->out;
 }
 
+static inline unsigned int fifo_room(struct fifo *fifo)
+{
+	return fifo->size - fifo->in + fifo->out;
+}
+
+#ifndef min
 #define min(x,y) ({ \
 	typeof(x) _x = (x);	\
 	typeof(y) _y = (y);	\
 	(void) (&_x == &_y);		\
 	_x < _y ? _x : _y; })
+#endif
 
+#ifndef max
 #define max(x,y) ({ \
 	typeof(x) _x = (x);	\
 	typeof(y) _y = (y);	\
 	(void) (&_x == &_y);		\
 	_x > _y ? _x : _y; })
 
+#endif