tls-compat.h: document sigaltstack(2) limitation

[urcu.git] / urcu / static / wfstack.h

diff --git a/urcu/static/wfstack.h b/urcu/static/wfstack.h
index 454240f2325e4224d6625a32232463ee74fe6935..cb68a59a16d8dc270355d1b6b29506d2120c812f 100644 (file)
--- a/urcu/static/wfstack.h
+++ b/urcu/static/wfstack.h
@@ -40,11 +40,13 @@ extern "C" {
 #define CDS_WFS_ADAPT_ATTEMPTS         10      /* Retry if being set */
 #define CDS_WFS_WAIT                   10      /* Wait 10 ms if being set */
 
+static inline
 void _cds_wfs_node_init(struct cds_wfs_node *node)
 {
        node->next = NULL;
 }
 
+static inline
 void _cds_wfs_init(struct cds_wfs_stack *s)
 {
        int ret;
@@ -54,7 +56,11 @@ void _cds_wfs_init(struct cds_wfs_stack *s)
        assert(!ret);
 }
 
-void _cds_wfs_push(struct cds_wfs_stack *s, struct cds_wfs_node *node)
+/*
+ * Returns 0 if stack was empty, 1 otherwise.
+ */
+static inline
+int _cds_wfs_push(struct cds_wfs_stack *s, struct cds_wfs_node *node)
 {
        struct cds_wfs_node *old_head;
 
@@ -69,11 +75,13 @@ void _cds_wfs_push(struct cds_wfs_stack *s, struct cds_wfs_node *node)
         * until node->next is set to old_head.
         */
        CMM_STORE_SHARED(node->next, old_head);
+       return (old_head != CDS_WF_STACK_END);
 }
 
 /*
  * Returns NULL if stack is empty.
  */
+static inline
 struct cds_wfs_node *
 ___cds_wfs_pop_blocking(struct cds_wfs_stack *s)
 {
@@ -100,6 +108,7 @@ retry:
                goto retry;             /* Concurrent modification. Retry. */
 }
 
+static inline
 struct cds_wfs_node *
 _cds_wfs_pop_blocking(struct cds_wfs_stack *s)
 {