struct cds_wfs_node node;
};
+struct __cds_wfs_stack {
+ struct cds_wfs_head *head;
+};
+
struct cds_wfs_stack {
struct cds_wfs_head *head;
pthread_mutex_t lock;
};
+/*
+ * The transparent union allows calling functions that work on both
+ * struct cds_wfs_stack and struct __cds_wfs_stack on any of those two
+ * types.
+ */
+typedef union __attribute__((__transparent_union__)) {
+ struct __cds_wfs_stack *_s;
+ struct cds_wfs_stack *s;
+} cds_wfs_stack_ptr_t;
+
#ifdef _LGPL_SOURCE
#include <urcu/static/wfstack.h>
#define cds_wfs_node_init _cds_wfs_node_init
#define cds_wfs_init _cds_wfs_init
+#define __cds_wfs_init ___cds_wfs_init
#define cds_wfs_empty _cds_wfs_empty
#define cds_wfs_push _cds_wfs_push
*/
extern void cds_wfs_init(struct cds_wfs_stack *s);
+/*
+ * __cds_wfs_init: initialize wait-free stack.
+ */
+extern void __cds_wfs_init(struct __cds_wfs_stack *s);
+
/*
* cds_wfs_empty: return whether wait-free stack is empty.
*
* No memory barrier is issued. No mutual exclusion is required.
*/
-extern bool cds_wfs_empty(struct cds_wfs_stack *s);
+extern bool cds_wfs_empty(cds_wfs_stack_ptr_t u_stack);
/*
* cds_wfs_push: push a node into the stack.
* Returns 0 if the stack was empty prior to adding the node.
* Returns non-zero otherwise.
*/
-extern int cds_wfs_push(struct cds_wfs_stack *s, struct cds_wfs_node *node);
+extern int cds_wfs_push(cds_wfs_stack_ptr_t u_stack, struct cds_wfs_node *node);
/*
* cds_wfs_pop_blocking: pop a node from the stack.
* 3) Ensuring that only ONE thread can call __cds_wfs_pop_blocking()
* and __cds_wfs_pop_all(). (multi-provider/single-consumer scheme).
*/
-extern struct cds_wfs_node *__cds_wfs_pop_blocking(struct cds_wfs_stack *s);
+extern struct cds_wfs_node *__cds_wfs_pop_blocking(cds_wfs_stack_ptr_t u_stack);
/*
* __cds_wfs_pop_with_state_blocking: pop a node from the stack, with state.
* empty into state (CDS_WFS_STATE_LAST).
*/
extern struct cds_wfs_node *
- __cds_wfs_pop_with_state_blocking(struct cds_wfs_stack *s, int *state);
+ __cds_wfs_pop_with_state_blocking(cds_wfs_stack_ptr_t u_stack,
+ int *state);
/*
* __cds_wfs_pop_nonblocking: pop a node from the stack.
* Same as __cds_wfs_pop_blocking, but returns CDS_WFS_WOULDBLOCK if
* it needs to block.
*/
-extern struct cds_wfs_node *__cds_wfs_pop_nonblocking(struct cds_wfs_stack *s);
+extern struct cds_wfs_node *__cds_wfs_pop_nonblocking(cds_wfs_stack_ptr_t u_stack);
/*
* __cds_wfs_pop_with_state_nonblocking: pop a node from the stack, with state.
* empty into state (CDS_WFS_STATE_LAST).
*/
extern struct cds_wfs_node *
- __cds_wfs_pop_with_state_nonblocking(struct cds_wfs_stack *s,
+ __cds_wfs_pop_with_state_nonblocking(cds_wfs_stack_ptr_t u_stack,
int *state);
/*
* 3) Ensuring that only ONE thread can call __cds_wfs_pop_blocking()
* and __cds_wfs_pop_all(). (multi-provider/single-consumer scheme).
*/
-extern struct cds_wfs_head *__cds_wfs_pop_all(struct cds_wfs_stack *s);
+extern struct cds_wfs_head *__cds_wfs_pop_all(cds_wfs_stack_ptr_t u_stack);
#endif /* !_LGPL_SOURCE */