if (p.casNext(null, beginningOfTheEnd)) {
if (p.casNext(null, newNode)) {
if (o != null && p.prev != p && first.casNext(next, p)) { skipDeletedPredecessors(p); if (first.prev == null &&
if (o != null && p.prev != p && first.casNext(next, p)) { skipDeletedPredecessors(p); if (first.prev == null &&
private void skipDeletedSuccessors(Node<E> x) { whileActive: do { Node<E> next = x.next; // assert next != null; // assert x != NEXT_TERMINATOR; // assert x != PREV_TERMINATOR; Node<E> p = next; findActive: for (;;) { if (p.item != null) break findActive; Node<E> q = p.next; if (q == null) { if (p.prev == p) continue whileActive; break findActive; } else if (p == q) continue whileActive; else p = q; } // found active CAS target if (next == p || x.casNext(next, p)) return; } while (x.item != null || x.prev == null); }
if (o != null && p.prev != p && first.casNext(next, p)) { skipDeletedPredecessors(p); if (first.prev == null &&
private void skipDeletedSuccessors(Node<E> x) { whileActive: do { Node<E> next = x.next; // assert next != null; // assert x != NEXT_TERMINATOR; // assert x != PREV_TERMINATOR; Node<E> p = next; findActive: for (;;) { if (p.item != null) break findActive; Node<E> q = p.next; if (q == null) { if (p.prev == p) continue whileActive; break findActive; } else if (p == q) continue whileActive; else p = q; } // found active CAS target if (next == p || x.casNext(next, p)) return; } while (x.item != null || x.prev == null); }
private void skipDeletedSuccessors(Node<E> x) { whileActive: do { Node<E> next = x.next; // assert next != null; // assert x != NEXT_TERMINATOR; // assert x != PREV_TERMINATOR; Node<E> p = next; findActive: for (;;) { if (p.item != null) break findActive; Node<E> q = p.next; if (q == null) { if (p.prev == p) continue whileActive; break findActive; } else if (p == q) continue whileActive; else p = q; } // found active CAS target if (next == p || x.casNext(next, p)) return; } while (x.item != null || x.prev == null); }
if (p.casNext(null, newNode)) {
private void skipDeletedSuccessors(Node<E> x) { whileActive: do { Node<E> next = x.next; // assert next != null; // assert x != NEXT_TERMINATOR; // assert x != PREV_TERMINATOR; Node<E> p = next; findActive: for (;;) { if (p.item != null) break findActive; Node<E> q = p.next; if (q == null) { if (p.prev == p) continue whileActive; break findActive; } else if (p == q) continue whileActive; else p = q; } // found active CAS target if (next == p || x.casNext(next, p)) return; } while (x.item != null || x.prev == null); }
if (p.casNext(null, newNode)) {
private void skipDeletedSuccessors(Node<E> x) { whileActive: do { Node<E> next = x.next; // assert next != null; // assert x != NEXT_TERMINATOR; // assert x != PREV_TERMINATOR; Node<E> p = next; findActive: for (;;) { if (p.item != null) break findActive; Node<E> q = p.next; if (q == null) { if (p.prev == p) continue whileActive; break findActive; } else if (p == q) continue whileActive; else p = q; } // found active CAS target if (next == p || x.casNext(next, p)) return; } while (x.item != null || x.prev == null); }
private void skipDeletedSuccessors(Node<E> x) { whileActive: do { Node<E> next = x.next; // assert next != null; // assert x != NEXT_TERMINATOR; // assert x != PREV_TERMINATOR; Node<E> p = next; findActive: for (;;) { if (p.item != null) break findActive; Node<E> q = p.next; if (q == null) { if (p.prev == p) continue whileActive; break findActive; } else if (p == q) continue whileActive; else p = q; } // found active CAS target if (next == p || x.casNext(next, p)) return; } while (x.item != null || x.prev == null); }
private void skipDeletedSuccessors(Node<E> x) { whileActive: do { Node<E> next = x.next; // assert next != null; // assert x != NEXT_TERMINATOR; // assert x != PREV_TERMINATOR; Node<E> p = next; findActive: for (;;) { if (p.item != null) break findActive; Node<E> q = p.next; if (q == null) { if (p.prev == p) continue whileActive; break findActive; } else if (p == q) continue whileActive; else p = q; } // found active CAS target if (next == p || x.casNext(next, p)) return; } while (x.item != null || x.prev == null); }
private void unlinkFirst(Node<E> first, Node<E> next) { for (Node<E> o = null, p = next, q; ; ) { if (p.item != null || (q = p.next) == null) { if (o != null && p.prev != p && first.casNext(next, p)) { skipDeletedPredecessors(p); if (first.prev == null && (p.next == null || p.item != null) && p.prev == first) { updateHead(); updateTail(); o.lazySetNext(o); o.lazySetPrev(prevTerminator()); } } return; } else if (p == q) { return; } else { o = p; p = q; } } }
private void skipDeletedSuccessors(Node<E> x) { whileActive: do { Node<E> next = x.next; Node<E> p = next; findActive: for (; ; ) { if (p.item != null) break findActive; Node<E> q = p.next; if (q == null) { if (p.prev == p) continue whileActive; break findActive; } else if (p == q) { continue whileActive; } else { p = q; } } if (next == p || x.casNext(next, p)) return; } while (x.item != null || x.prev == null); }
private void linkLast(E e) { checkNotNull(e); final Node<E> newNode = new Node<E>(e); restartFromTail: for (; ; ) { for (Node<E> t = tail, p = t, q; ; ) { if ((q = p.next) != null && (q = (p = q).next) != null) { p = (t != (t = tail)) ? t : q; } else if (p.prev == p) { continue restartFromTail; } else { newNode.lazySetPrev(p); if (p.casNext(null, newNode)) { if (p != t) casTail(t, newNode); return; } } } } }
if (o != null && p.prev != p && first.casNext(next, p)) { skipDeletedPredecessors(p); if (first.prev == null &&
if (p.casNext(null, newNode)) {
private void skipDeletedSuccessors(Node<E> x) { whileActive: do { Node<E> next = x.next; // assert next != null; // assert x != NEXT_TERMINATOR; // assert x != PREV_TERMINATOR; Node<E> p = next; findActive: for (;;) { if (p.item != null) break findActive; Node<E> q = p.next; if (q == null) { if (p.prev == p) continue whileActive; break findActive; } else if (p == q) continue whileActive; else p = q; } // found active CAS target if (next == p || x.casNext(next, p)) return; } while (x.item != null || x.prev == null); }