Cleanup: Re-organise source dir

[urcu.git] / urcu / ref.h

diff --git a/urcu/ref.h b/urcu/ref.h
deleted file mode 100644 (file)
index e546da5..0000000
--- a/urcu/ref.h
+++ /dev/null
@@ -1,98 +0,0 @@
-#ifndef _URCU_REF_H
-#define _URCU_REF_H
-
-/*
- * Userspace RCU - Reference counting
- *
- * Copyright (C) 2009 Novell Inc.
- * Copyright (C) 2010 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- *
- * Author: Jan Blunck <jblunck@suse.de>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU Lesser General Public License version 2.1 as
- * published by the Free  Software Foundation.
- */
-
-#include <assert.h>
-#include <stdbool.h>
-#include <limits.h>
-#include <stdlib.h>
-#include <urcu/uatomic.h>
-
-struct urcu_ref {
-       long refcount; /* ATOMIC */
-};
-
-static inline void urcu_ref_set(struct urcu_ref *ref, long val)
-{
-       uatomic_set(&ref->refcount, val);
-}
-
-static inline void urcu_ref_init(struct urcu_ref *ref)
-{
-       urcu_ref_set(ref, 1);
-}
-
-static inline bool  __attribute__((warn_unused_result))
-               urcu_ref_get_safe(struct urcu_ref *ref)
-{
-       long old, _new, res;
-
-       old = uatomic_read(&ref->refcount);
-       for (;;) {
-               if (old == LONG_MAX) {
-                       return false;   /* Failure. */
-               }
-               _new = old + 1;
-               res = uatomic_cmpxchg(&ref->refcount, old, _new);
-               if (res == old) {
-                       return true;    /* Success. */
-               }
-               old = res;
-       }
-}
-
-static inline void urcu_ref_get(struct urcu_ref *ref)
-{
-       if (!urcu_ref_get_safe(ref))
-               abort();
-}
-
-static inline void urcu_ref_put(struct urcu_ref *ref,
-                               void (*release)(struct urcu_ref *))
-{
-       long res = uatomic_sub_return(&ref->refcount, 1);
-       assert (res >= 0);
-       if (res == 0)
-               release(ref);
-}
-
-/*
- * urcu_ref_get_unless_zero
- *
- * Allows getting a reference atomically if the reference count is not
- * zero. Returns true if the reference is taken, false otherwise. This
- * needs to be used in conjunction with another synchronization
- * technique (e.g.  RCU or mutex) to ensure existence of the reference
- * count. False is also returned in case incrementing the refcount would
- * result in an overflow.
- */
-static inline bool urcu_ref_get_unless_zero(struct urcu_ref *ref)
-{
-       long old, _new, res;
-
-       old = uatomic_read(&ref->refcount);
-       for (;;) {
-               if (old == 0 || old == LONG_MAX)
-                       return false;   /* Failure. */
-               _new = old + 1;
-               res = uatomic_cmpxchg(&ref->refcount, old, _new);
-               if (res == old) {
-                       return true;    /* Success. */
-               }
-               old = res;
-       }
-}
-
-#endif /* _URCU_REF_H */