Just a hint.
Signed-off-by: Lai Jiangshan <[email protected]>
---
urcu/tls-compat.h | 15 +++++++++++++++
1 files changed, 15 insertions(+), 0 deletions(-)
diff --git a/urcu/tls-compat.h b/urcu/tls-compat.h
index 9686eca..192a536 100644
--- a/urcu/tls-compat.h
+++ b/urcu/tls-compat.h
@@ -34,6 +34,21 @@ extern "C" {
#ifdef CONFIG_RCU_TLS /* Based on ax_tls.m4 */
+/*
+ * Hint: How to define/declare TLS variables of compound types
+ * such as array or function pointers?
+ *
+ * Answer: Use typedef to assign a type_name to the compound type.
+ * Example: Define a TLS variable which is an int array with len=4:
+ *
+ * typedef int my_int_array_type[4];
+ * DEFINE_URCU_TLS(my_int_array_type, var_name);
+ *
+ * Another exmaple:
+ * typedef void (*call_rcu_flavor)(struct rcu_head *, XXXX);
+ * DECLARE_URCU_TLS(call_rcu_flavor, p_call_rcu);
+ */
+
# define DECLARE_URCU_TLS(type, name) \
CONFIG_RCU_TLS type name
--
1.7.4.4
_______________________________________________
lttng-dev mailing list
[email protected]
http://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
