added comedi_mark_buffer_written() to kcomedilib

diff --git a/comedi/kcomedilib/get.c b/comedi/kcomedilib/get.c
index 1f79ca50a4235fae550397118c2826f3060d88a3..0d7c45d8fec6a5582133953ae537564c9b16d43f 100644 (file)
--- a/comedi/kcomedilib/get.c
+++ b/comedi/kcomedilib/get.c
@@ -232,6 +232,24 @@ int comedi_mark_buffer_read( comedi_t *d, unsigned int subdevice,
        return 0;
 }
 
+int comedi_mark_buffer_written( comedi_t *d, unsigned int subdevice,
+       unsigned int num_bytes )
+{
+       comedi_device *dev = (comedi_device *)d;
+       comedi_subdevice *s = dev->subdevices + subdevice;
+       comedi_async *async;
+       int bytes_written;
+       
+       if( subdevice >= dev->n_subdevices ) return -1;
+       async = s->async;
+       if( async == NULL ) return -1;
+       bytes_written = comedi_buf_write_alloc(async, num_bytes);
+       comedi_buf_munge(dev, s, async->buf_write_alloc_count - async->munge_count);
+       comedi_buf_write_free(async, bytes_written);
+       if(bytes_written != num_bytes) return -1;
+       return 0;
+}
+
 
 int comedi_get_buffer_size(comedi_t *d,unsigned int subdev)
 {