* Forceably start the shutdown process on a node. Either call * its shutdown method, or do the default shutdown if there is * no type-specific method. * * We can only be called from a shutdown message, so we know we have * a writer lock, and therefore exclusive access. It also means * that we should not be on the work queue, but we check anyhow. * * Persistent node types must have a type-s
| 712 | * are rebooting.... etc. |
| 713 | */ |
| 714 | void |
| 715 | ng_rmnode(node_p node, hook_p dummy1, void *dummy2, int dummy3) |
| 716 | { |
| 717 | hook_p hook; |
| 718 | |
| 719 | /* Check if it's already shutting down */ |
| 720 | if ((node->nd_flags & NGF_CLOSING) != 0) |
| 721 | return; |
| 722 | |
| 723 | if (node == &ng_deadnode) { |
| 724 | printf ("shutdown called on deadnode\n"); |
| 725 | return; |
| 726 | } |
| 727 | |
| 728 | /* Add an extra reference so it doesn't go away during this */ |
| 729 | NG_NODE_REF(node); |
| 730 | |
| 731 | /* |
| 732 | * Mark it invalid so any newcomers know not to try use it |
| 733 | * Also add our own mark so we can't recurse |
| 734 | * note that NGF_INVALID does not do this as it's also set during |
| 735 | * creation |
| 736 | */ |
| 737 | node->nd_flags |= NGF_INVALID|NGF_CLOSING; |
| 738 | |
| 739 | /* If node has its pre-shutdown method, then call it first*/ |
| 740 | if (node->nd_type && node->nd_type->close) |
| 741 | (*node->nd_type->close)(node); |
| 742 | |
| 743 | /* Notify all remaining connected nodes to disconnect */ |
| 744 | while ((hook = LIST_FIRST(&node->nd_hooks)) != NULL) |
| 745 | ng_destroy_hook(hook); |
| 746 | |
| 747 | /* |
| 748 | * Drain the input queue forceably. |
| 749 | * it has no hooks so what's it going to do, bleed on someone? |
| 750 | * Theoretically we came here from a queue entry that was added |
| 751 | * Just before the queue was closed, so it should be empty anyway. |
| 752 | * Also removes us from worklist if needed. |
| 753 | */ |
| 754 | ng_flush_input_queue(node); |
| 755 | |
| 756 | /* Ask the type if it has anything to do in this case */ |
| 757 | if (node->nd_type && node->nd_type->shutdown) { |
| 758 | (*node->nd_type->shutdown)(node); |
| 759 | if (NG_NODE_IS_VALID(node)) { |
| 760 | /* |
| 761 | * Well, blow me down if the node code hasn't declared |
| 762 | * that it doesn't want to die. |
| 763 | * Presumably it is a persistent node. |
| 764 | * If we REALLY want it to go away, |
| 765 | * e.g. hardware going away, |
| 766 | * Our caller should set NGF_REALLY_DIE in nd_flags. |
| 767 | */ |
| 768 | node->nd_flags &= ~(NGF_INVALID|NGF_CLOSING); |
| 769 | NG_NODE_UNREF(node); /* Assume they still have theirs */ |
| 770 | return; |
| 771 | } |
no test coverage detected