os: Make streams abstract.

Also replace windows kernel stream with null implementation. It was
severely limited and no easy means to test it now.

1 files changed, 42 insertions, 13 deletions

diff --git a/src/gallium/auxiliary/os/os_stream.h b/src/gallium/auxiliary/os/os_stream.h
index bf30e6542d..8232b0f158 100644
--- a/src/gallium/auxiliary/os/os_stream.h
+++ b/src/gallium/auxiliary/os/os_stream.h
@@ -37,25 +37,54 @@
 #include "pipe/p_compiler.h"
 
 
-struct os_stream;
-
-
 /**
- * Create a stream
- * @param filename relative or absolute path (necessary for windows)  
- * @param optional maximum file size (0 for a growable size).
+ * OS stream (FILE, socket, etc) abstraction.
  */
+struct os_stream
+{
+   void
+   (*close)(struct os_stream *stream);
+
+   boolean
+   (*write)(struct os_stream *stream, const void *data, size_t size);
+
+   void
+   (*flush)(struct os_stream *stream);
+};
+
+
+static INLINE void
+os_stream_close(struct os_stream *stream)
+{
+   stream->close(stream);
+}
+
+
+static INLINE boolean
+os_stream_write(struct os_stream *stream, const void *data, size_t size)
+{
+   return stream->write(stream, data, size);
+}
+
+
+static INLINE void
+os_stream_flush(struct os_stream *stream)
+{
+   stream->flush(stream);
+}
+
+
 struct os_stream *
-os_stream_create(const char *filename, size_t max_size);
+os_file_stream_create(const char *filename);
+
 
-boolean
-os_stream_write(struct os_stream *stream, const void *data, size_t size);
+struct os_stream *
+os_null_stream_create(void);
 
-void
-os_stream_flush(struct os_stream *stream);
 
-void
-os_stream_close(struct os_stream *stream);
+#if defined(PIPE_SUBSYSTEM_WINDOWS_DISPLAY)
+#define os_file_stream_create(_filename) os_null_stream_create()
+#endif
 
 
 #endif /* _OS_STREAM_H_ */