X-Git-Url: http://git.archive.openwrt.org/?p=project%2Flibubox.git;a=blobdiff_plain;f=ustream.h;h=15f1ba10e8d7430271d071d9c3fa2f4e870f67ef;hp=634a3e7e41b9e7931cc1f17841f1246fff4e6a8c;hb=17f4e41ecb80f70c14493b4518e6eabec9faff7b;hpb=efc9f4b702f44854193d015b72831b4530258aaf

diff --git a/ustream.h b/ustream.h
index 634a3e7..15f1ba1 100644
--- a/ustream.h
+++ b/ustream.h
@@ -68,7 +68,7 @@ struct ustream {
 	void (*notify_write)(struct ustream *s, int bytes);
 
 	/*
-	 * notify_state:
+	 * notify_state: (optional)
 	 * called by the ustream implementation to notify that the read
 	 * side of the stream is closed (eof is set) or there was a write
 	 * error (write_error is set).
@@ -163,6 +163,17 @@ static inline bool ustream_read_blocked(struct ustream *s)
 	return !!(s->read_blocked & READ_BLOCKED_USER);
 }
 
+static inline int ustream_pending_data(struct ustream *s, bool write)
+{
+	struct ustream_buf_list *b = write ? &s->w : &s->r;
+	return b->data_bytes;
+}
+
+static inline bool ustream_read_buf_full(struct ustream *s)
+{
+	return ustream_pending_data(s, false) == s->r.buffer_len;
+}
+
 /*** --- functions only used by ustream implementations --- ***/
 
 /* ustream_init_defaults: fill default callbacks and options */