* library wrappers to be used by non-LGPL compatible source code.
*/
+/*
+ * QSBR read lock/unlock are guaranteed to be no-ops. Therefore, we expose them
+ * in the LGPL header for any code to use. However, the debug version is not
+ * nops and may contain sanity checks. To activate it, applications must be
+ * recompiled with -DURCU_DEBUG (even non-LGPL/GPL applications). This is the
+ * best trade-off between license/performance/code triviality and
+ * library debugging & tracing features we could come up with.
+ */
+
+#if (!defined(BUILD_QSBR_LIB) && defined(URCU_DEBUG))
+
+static inline void rcu_read_lock(void)
+{
+}
+
+static inline void rcu_read_lock(void)
+{
+}
+
+#else /* !URCU_DEBUG */
+
extern void rcu_read_lock(void);
extern void rcu_read_unlock(void);
+#endif /* !URCU_DEBUG */
+
extern void *rcu_dereference(void *p);
extern void rcu_quiescent_state(void);
#define rcu_assign_pointer(p, v) \
rcu_assign_pointer_sym((void **)(p), (v))
+extern void *rcu_cmpxchg_pointer_sym(void **p, void *old, void *_new);
+#define rcu_cmpxchg_pointer(p, old, _new) \
+ rcu_cmpxchg_pointer_sym((void **)(p), (old), (_new))
+
extern void *rcu_xchg_pointer_sym(void **p, void *v);
#define rcu_xchg_pointer(p, v) \
rcu_xchg_pointer_sym((void **)(p), (v))