X-Git-Url: https://git.liburcu.org/?a=blobdiff_plain;f=urcu.c;h=be6d4bdfc55b32d624011280c972d6f2772f2853;hb=2d47d69ea0876148b5628aa8f7bd9f030a8c5d2f;hp=2339bc63c872c6a4826d7a52e8d064d85130c0df;hpb=6d841bc23fc94345fe76651d73c1a3f821a85aa7;p=urcu.git

diff --git a/urcu.c b/urcu.c
index 2339bc6..be6d4bd 100644
--- a/urcu.c
+++ b/urcu.c
@@ -41,6 +41,18 @@
 /* Do not #define _LGPL_SOURCE to ensure we can emit the wrapper symbols */
 #include "urcu.h"
 
+/*
+ * If a reader is really non-cooperative and refuses to commit its
+ * rcu_active_readers count to memory (there is no barrier in the reader
+ * per-se), kick it after a few loops waiting for it.
+ */
+#define KICK_READER_LOOPS 10000
+
+/*
+ * Active attempts to check for reader Q.S. before calling futex().
+ */
+#define RCU_QS_ACTIVE_ATTEMPTS 100
+
 #ifdef RCU_MEMBARRIER
 static int init_done;
 int has_sys_membarrier;