C++ (Cpp) umtx_shm_object_terminated Examples

Example #1

File: vnode_pager.c Project: bhimanshu1997/freebsd

void
vnode_destroy_vobject(struct vnode *vp)
{
	struct vm_object *obj;

	obj = vp->v_object;
	if (obj == NULL)
		return;
	ASSERT_VOP_ELOCKED(vp, "vnode_destroy_vobject");
	VM_OBJECT_WLOCK(obj);
	umtx_shm_object_terminated(obj);
	if (obj->ref_count == 0) {
		/*
		 * don't double-terminate the object
		 */
		if ((obj->flags & OBJ_DEAD) == 0)
			vm_object_terminate(obj);
		else
			VM_OBJECT_WUNLOCK(obj);
	} else {
		/*
		 * Woe to the process that tries to page now :-).
		 */
		vm_pager_deallocate(obj);
		VM_OBJECT_WUNLOCK(obj);
	}
	vp->v_object = NULL;
}

Example #2

File: vnode_pager.c Project: kwitaszczyk/freebsd

void
vnode_destroy_vobject(struct vnode *vp)
{
	struct vm_object *obj;

	obj = vp->v_object;
	if (obj == NULL)
		return;
	ASSERT_VOP_ELOCKED(vp, "vnode_destroy_vobject");
	VM_OBJECT_WLOCK(obj);
	umtx_shm_object_terminated(obj);
	if (obj->ref_count == 0) {
		/*
		 * don't double-terminate the object
		 */
		if ((obj->flags & OBJ_DEAD) == 0) {
			vm_object_terminate(obj);
		} else {
			/*
			 * Waiters were already handled during object
			 * termination.  The exclusive vnode lock hopefully
			 * prevented new waiters from referencing the dying
			 * object.
			 */
			KASSERT((obj->flags & OBJ_DISCONNECTWNT) == 0,
			    ("OBJ_DISCONNECTWNT set obj %p flags %x",
			    obj, obj->flags));
			vp->v_object = NULL;
			VM_OBJECT_WUNLOCK(obj);
		}
	} else {
		/*
		 * Woe to the process that tries to page now :-).
		 */
		vm_pager_deallocate(obj);
		VM_OBJECT_WUNLOCK(obj);
	}
	KASSERT(vp->v_object == NULL, ("vp %p obj %p", vp, vp->v_object));
}