X-Git-Url: http://git.lttng.org/?a=blobdiff_plain;f=README.md;h=ba5bb08deab9dd8f3a912b4d92835b37151c46d3;hb=90f72b8c054ca4e3b4b45f630549c784e26ce79a;hp=cd24cc53ba0f3887d08c467be033f2e6af6f661d;hpb=cef5f31d82517e28a0980ecdc907b2f816185455;p=userspace-rcu.git

diff --git a/README.md b/README.md
index cd24cc5..ba5bb08 100644
--- a/README.md
+++ b/README.md
@@ -65,7 +65,6 @@ Should also work on:
   - Android
   - NetBSD 5
   - OpenBSD
-  - Darwin
 
 (more testing needed before claiming support for these OS).
 
@@ -251,6 +250,14 @@ protected pointer.
 After, `urcu_<flavor>_synchronize_rcu()` must be called. When it
 returns, the old values are not in usage anymore.
 
+As an alternative to `urcu_<flavor>_synchronize_rcu()`,
+it is also possible to use the urcu polling mechanism to wait for a
+grace period to elapse. This can be done by using
+`urcu_<flavor>_start_poll_synchronize_rcu()`
+to start the grace period polling, and then invoke
+`urcu_<flavor>_poll_state_synchronize_rcu()`, which returns true if
+the grace period has completed, false otherwise.
+
 
 ### Usage of `liburcu-defer`