Update documentation.

README.md

@@ -2090,16 +2090,20 @@ MOVE operator.
 
 ##### type *name\_write(snapshot\_t snap)
 
-Take an atomic snap of the active written contain of the snapshot 'snap'
-and clotures it.
-It returns the pointer to the new active written contain of the snapshot
-(which is not snapped).
+Publish the 'in-progress' data of the snapshot 'snap so that the read
+thread can have access to the data.
+It returns the pointer to the new 'in-progress' data buffer 
+of the snapshot (which is not yet published but will be pusblished 
+for the next call of name\_write).
 This functions is thread-safe and performs atomic operation on the snapshot.
 
 ##### type *name\_read(snapshot\_t snap)
 
-Look at the last atomic snap of the active read contain of the snapshot 'snap'.
+Get access to the last published data of the snapshot 'snap'.
 It returns the pointer to the data.
+If a publication has been performed since the last call to name\_read
+a new pointer to the data is returned. 
+Otherwise the previous pointer is returned.
 This functions is thread-safe and performs atomic operation on the snapshot.
 
 ##### bool name\_updated\_p(snapshot\_t snap)
@@ -2110,14 +2114,14 @@ This functions is thread-safe and performs atomic operation on the snapshot.
 
 ##### type *name\_get\_write\_buffer(snapshot\_t snap)
 
-Return a pointer to the active 'in-progress' contain of the snapshot 'snap'.
-It is the same as the last return from name\_take.
+Return a pointer to the active 'in-progress' data of the snapshot 'snap'.
+It is the same as the last return from name\_write.
 This functions is thread-safe and performs atomic operation on the snapshot.
 
 ##### type *name\_get\_read\_buffer(snapshot\_t snap)
 
-Return a pointer to the active 'freezed' contain of the snapshot 'snap'.
-It is the same as the last return from name\_look.
+Return a pointer to the active published data of the snapshot 'snap'.
+It is the same as the last return from name\_read.
 It doesn't perform any switch of the data which has to be read.
 This functions is thread-safe and performs atomic operation on the snapshot.