Document important limitation of this basic implementation

diff --git a/libraries/liblthread/rdwr.c b/libraries/liblthread/rdwr.c
index 8de2be407a16c7f8caa8fc83d49506ea141255c5..51c15e8e30afb084d9c16c09c89f87e7e0568070 100644 (file)
--- a/libraries/liblthread/rdwr.c
+++ b/libraries/liblthread/rdwr.c
@@ -1,3 +1,10 @@
+/*
+** This basic implementation of Reader/Writer locks does not
+** protect writers from starvation.  That is, if a writer is
+** currently waiting on a reader, any new reader will get
+** the lock before the writer.
+*/
+
 /********************************************************
  * An example source module to accompany...
  *