Package org.apache.cassandra.db.context.CounterContext

Examples of org.apache.cassandra.db.context.CounterContext.ContextState

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        runDiff(bumpedSlab());
    }

    private void runDiff(Allocator allocator)
    {
        ContextState left = ContextState.allocate(3, 0, allocator);
        ContextState right;

        // equality: equal nodes, all counts same
        left.writeElement(NodeId.fromInt(3), 3L, 0L);
        left.writeElement(NodeId.fromInt(6), 2L, 0L);
        left.writeElement(NodeId.fromInt(9), 1L, 0L);
        right = new ContextState(ByteBufferUtil.clone(left.context), left.headerLength);

        assert ContextRelationship.EQUAL ==
            cc.diff(left.context, right.context);

        // greater than: left has superset of nodes (counts equal)
        left = ContextState.allocate(4, 0, allocator);
        left.writeElement(NodeId.fromInt(3),  3L, 0L);
        left.writeElement(NodeId.fromInt(6),  2L, 0L);
        left.writeElement(NodeId.fromInt(9),  1L, 0L);
        left.writeElement(NodeId.fromInt(12), 0L, 0L);

        right = ContextState.allocate(3, 0, allocator);
        right.writeElement(NodeId.fromInt(3), 3L, 0L);
        right.writeElement(NodeId.fromInt(6), 2L, 0L);
        right.writeElement(NodeId.fromInt(9), 1L, 0L);

        assert ContextRelationship.GREATER_THAN ==
            cc.diff(left.context, right.context);
       
        // less than: left has subset of nodes (counts equal)
        left = ContextState.allocate(3, 0, allocator);
        left.writeElement(NodeId.fromInt(3), 3L, 0L);
        left.writeElement(NodeId.fromInt(6), 2L, 0L);
        left.writeElement(NodeId.fromInt(9), 1L, 0L);

        right = ContextState.allocate(4, 0, allocator);
        right.writeElement(NodeId.fromInt(3),  3L, 0L);
        right.writeElement(NodeId.fromInt(6),  2L, 0L);
        right.writeElement(NodeId.fromInt(9),  1L, 0L);
        right.writeElement(NodeId.fromInt(12), 0L, 0L);

        assert ContextRelationship.LESS_THAN ==
            cc.diff(left.context, right.context);

        // greater than: equal nodes, but left has higher counts
        left = ContextState.allocate(3, 0, allocator);
        left.writeElement(NodeId.fromInt(3), 3L, 0L);
        left.writeElement(NodeId.fromInt(6), 2L, 0L);
        left.writeElement(NodeId.fromInt(9), 3L, 0L);

        right = ContextState.allocate(3, 0, allocator);
        right.writeElement(NodeId.fromInt(3), 3L, 0L);
        right.writeElement(NodeId.fromInt(6), 2L, 0L);
        right.writeElement(NodeId.fromInt(9), 1L, 0L);

        assert ContextRelationship.GREATER_THAN ==
            cc.diff(left.context, right.context);

        // less than: equal nodes, but right has higher counts
        left = ContextState.allocate(3, 0, allocator);
        left.writeElement(NodeId.fromInt(3), 3L, 0L);
        left.writeElement(NodeId.fromInt(6), 2L, 0L);
        left.writeElement(NodeId.fromInt(9), 3L, 0L);

        right = ContextState.allocate(3, 0, allocator);
        right.writeElement(NodeId.fromInt(3), 3L, 0L);
        right.writeElement(NodeId.fromInt(6), 9L, 0L);
        right.writeElement(NodeId.fromInt(9), 3L, 0L);

        assert ContextRelationship.LESS_THAN ==
            cc.diff(left.context, right.context);

        // disjoint: right and left have disjoint node sets
        left = ContextState.allocate(3, 0, allocator);
        left.writeElement(NodeId.fromInt(3), 1L, 0L);
        left.writeElement(NodeId.fromInt(4), 1L, 0L);
        left.writeElement(NodeId.fromInt(9), 1L, 0L);

        right = ContextState.allocate(3, 0, allocator);
        right.writeElement(NodeId.fromInt(3), 1L, 0L);
        right.writeElement(NodeId.fromInt(6), 1L, 0L);
        right.writeElement(NodeId.fromInt(9), 1L, 0L);

        assert ContextRelationship.DISJOINT ==
            cc.diff(left.context, right.context);

        left = ContextState.allocate(3, 0, allocator);
        left.writeElement(NodeId.fromInt(3), 1L, 0L);
        left.writeElement(NodeId.fromInt(4), 1L, 0L);
        left.writeElement(NodeId.fromInt(9), 1L, 0L);

        right = ContextState.allocate(3, 0, allocator);
        right.writeElement(NodeId.fromInt(2),  1L, 0L);
        right.writeElement(NodeId.fromInt(6),  1L, 0L);
        right.writeElement(NodeId.fromInt(12), 1L, 0L);

        assert ContextRelationship.DISJOINT ==
            cc.diff(left.context, right.context);

        // disjoint: equal nodes, but right and left have higher counts in differing nodes
        left = ContextState.allocate(3, 0, allocator);
        left.writeElement(NodeId.fromInt(3), 1L, 0L);
        left.writeElement(NodeId.fromInt(6), 3L, 0L);
        left.writeElement(NodeId.fromInt(9), 1L, 0L);

        right = ContextState.allocate(3, 0, allocator);
        right.writeElement(NodeId.fromInt(3), 1L, 0L);
        right.writeElement(NodeId.fromInt(6), 1L, 0L);
        right.writeElement(NodeId.fromInt(9), 5L, 0L);

        assert ContextRelationship.DISJOINT ==
            cc.diff(left.context, right.context);

        left = ContextState.allocate(3, 0, allocator);
        left.writeElement(NodeId.fromInt(3), 2L, 0L);
        left.writeElement(NodeId.fromInt(6), 3L, 0L);
        left.writeElement(NodeId.fromInt(9), 1L, 0L);

        right = ContextState.allocate(3, 0, allocator);
        right.writeElement(NodeId.fromInt(3), 1L, 0L);
        right.writeElement(NodeId.fromInt(6), 9L, 0L);
        right.writeElement(NodeId.fromInt(9), 5L, 0L);

        assert ContextRelationship.DISJOINT ==
            cc.diff(left.context, right.context);

        // disjoint: left has more nodes, but lower counts
        left = ContextState.allocate(4, 0, allocator);
        left.writeElement(NodeId.fromInt(3),  2L, 0L);
        left.writeElement(NodeId.fromInt(6),  3L, 0L);
        left.writeElement(NodeId.fromInt(9),  1L, 0L);
        left.writeElement(NodeId.fromInt(12), 1L, 0L);

        right = ContextState.allocate(3, 0, allocator);
        right.writeElement(NodeId.fromInt(3), 4L, 0L);
        right.writeElement(NodeId.fromInt(6), 9L, 0L);
        right.writeElement(NodeId.fromInt(9), 5L, 0L);

        assert ContextRelationship.DISJOINT ==
            cc.diff(left.context, right.context);
       
        // disjoint: left has less nodes, but higher counts
        left = ContextState.allocate(3, 0, allocator);
        left.writeElement(NodeId.fromInt(3), 5L, 0L);
        left.writeElement(NodeId.fromInt(6), 3L, 0L);
        left.writeElement(NodeId.fromInt(9), 2L, 0L);

        right = ContextState.allocate(4, 0, allocator);
        right.writeElement(NodeId.fromInt(3),  4L, 0L);
        right.writeElement(NodeId.fromInt(6),  3L, 0L);
        right.writeElement(NodeId.fromInt(9),  2L, 0L);
        right.writeElement(NodeId.fromInt(12), 1L, 0L);

        assert ContextRelationship.DISJOINT ==
            cc.diff(left.context, right.context);

        // disjoint: mixed nodes and counts
        left = ContextState.allocate(3, 0, allocator);
        left.writeElement(NodeId.fromInt(3), 5L, 0L);
        left.writeElement(NodeId.fromInt(6), 2L, 0L);
        left.writeElement(NodeId.fromInt(9), 2L, 0L);

        right = ContextState.allocate(4, 0, allocator);
        right.writeElement(NodeId.fromInt(3),  4L, 0L);
        right.writeElement(NodeId.fromInt(6),  3L, 0L);
        right.writeElement(NodeId.fromInt(9),  2L, 0L);
        right.writeElement(NodeId.fromInt(12), 1L, 0L);

        assert ContextRelationship.DISJOINT ==
            cc.diff(left.context, right.context);

        left = ContextState.allocate(4, 0, allocator);
        left.writeElement(NodeId.fromInt(3), 5L, 0L);
        left.writeElement(NodeId.fromInt(6), 2L, 0L);
        left.writeElement(NodeId.fromInt(7), 2L, 0L);
        left.writeElement(NodeId.fromInt(9), 2L, 0L);

        right = ContextState.allocate(3, 0, allocator);
        right.writeElement(NodeId.fromInt(3), 4L, 0L);
        right.writeElement(NodeId.fromInt(6), 3L, 0L);
        right.writeElement(NodeId.fromInt(9), 2L, 0L);

        assert ContextRelationship.DISJOINT ==
            cc.diff(left.context, right.context);
    }
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    }

    private void runMerge(Allocator allocator)
    {
        // note: local counts aggregated; remote counts are reconciled (i.e. take max)
        ContextState left = ContextState.allocate(4, 1, allocator);
        left.writeElement(NodeId.fromInt(1), 1L, 1L);
        left.writeElement(NodeId.fromInt(2), 2L, 2L);
        left.writeElement(NodeId.fromInt(4), 6L, 3L);
        left.writeElement(NodeId.getLocalId(), 7L, 3L, true);

        ContextState right = ContextState.allocate(3, 1, allocator);
        right.writeElement(NodeId.fromInt(4), 4L, 4L);
        right.writeElement(NodeId.fromInt(5), 5L, 5L);
        right.writeElement(NodeId.getLocalId(), 2L, 9L, true);

        ByteBuffer merged = cc.merge(left.context, right.context, allocator);
        int hd = 4;

        assertEquals(hd + 5 * stepLength, merged.remaining());
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        runTotal(bumpedSlab());
    }

    private void runTotal(Allocator allocator)
    {
        ContextState left = ContextState.allocate(4, 1, allocator);
        left.writeElement(NodeId.fromInt(1), 1L, 1L);
        left.writeElement(NodeId.fromInt(2), 2L, 2L);
        left.writeElement(NodeId.fromInt(4), 3L, 3L);
        left.writeElement(NodeId.getLocalId(), 3L, 3L, true);

        ContextState right = ContextState.allocate(3, 1, allocator);
        right.writeElement(NodeId.fromInt(4), 4L, 4L);
        right.writeElement(NodeId.fromInt(5), 5L, 5L);
        right.writeElement(NodeId.getLocalId(), 9L, 9L, true);

        ByteBuffer merged = cc.merge(left.context, right.context, allocator);

        // 127.0.0.1: 12 (3+9)
        // 0.0.0.1:    1
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        NodeId id3 = NodeId.fromInt(3);
        List<NodeId.NodeIdRecord> records = new ArrayList<NodeId.NodeIdRecord>();
        records.add(new NodeId.NodeIdRecord(id1, 2L));
        records.add(new NodeId.NodeIdRecord(id3, 4L));

        ContextState ctx = ContextState.allocate(5, 3, allocator);
        ctx.writeElement(id1, 1L, 1L, true);
        ctx.writeElement(NodeId.fromInt(2), 2L, 2L);
        ctx.writeElement(id3, 3L, 3L, true);
        ctx.writeElement(NodeId.fromInt(4), 6L, 3L);
        ctx.writeElement(NodeId.fromInt(5), 7L, 3L, true);

        ByteBuffer merger = cc.computeOldShardMerger(ctx.context, records, Integer.MAX_VALUE);

        ContextState m = new ContextState(merger);

        assert m.getNodeId().equals(id1);
        assert m.getClock() <= -now;
        assert m.getCount() == -1L;
        assert m.isDelta();
        m.moveToNext();
        assert m.getNodeId().equals(id3);
        assert m.getClock() <= -now;
        assert m.getCount() == -3L;
        assert m.isDelta();
        m.moveToNext();
        assert m.getNodeId().equals(NodeId.getLocalId());
        assert m.getClock() == 1L;
        assert m.getCount() == 4L;
        assert m.isDelta();
        assert cc.total(ctx.context) == cc.total(cc.merge(ctx.context, merger, allocator));
    }
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        List<NodeId.NodeIdRecord> records = new ArrayList<NodeId.NodeIdRecord>();
        records.add(new NodeId.NodeIdRecord(id1, 2L));
        records.add(new NodeId.NodeIdRecord(id3, 4L));
        records.add(new NodeId.NodeIdRecord(id6, 10L));

        ContextState ctx = ContextState.allocate(6, 3, allocator);
        ctx.writeElement(id1, 1L, 1L, true);
        ctx.writeElement(NodeId.fromInt(2), 2L, 2L);
        ctx.writeElement(id3, 3L, 3L, true);
        ctx.writeElement(NodeId.fromInt(4), 6L, 3L);
        ctx.writeElement(NodeId.fromInt(5), 7L, 3L, true);
        ctx.writeElement(id6, 5L, 6L);

        ByteBuffer merger = cc.computeOldShardMerger(ctx.context, records, Integer.MAX_VALUE);
        ByteBuffer merged = cc.merge(ctx.context, merger, allocator);
        assert cc.total(ctx.context) == cc.total(merged);
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    }

    @Test
    public void testDiff()
    {
        ContextState left = ContextState.allocate(3, 0);
        ContextState right;

        // equality: equal nodes, all counts same
        left.writeElement(NodeId.fromInt(3), 3L, 0L);
        left.writeElement(NodeId.fromInt(6), 2L, 0L);
        left.writeElement(NodeId.fromInt(9), 1L, 0L);
        right = new ContextState(ByteBufferUtil.clone(left.context), left.headerLength);

        assert ContextRelationship.EQUAL ==
            cc.diff(left.context, right.context);

        // greater than: left has superset of nodes (counts equal)
        left = ContextState.allocate(4, 0);
        left.writeElement(NodeId.fromInt(3),  3L, 0L);
        left.writeElement(NodeId.fromInt(6),  2L, 0L);
        left.writeElement(NodeId.fromInt(9),  1L, 0L);
        left.writeElement(NodeId.fromInt(12), 0L, 0L);

        right = ContextState.allocate(3, 0);
        right.writeElement(NodeId.fromInt(3), 3L, 0L);
        right.writeElement(NodeId.fromInt(6), 2L, 0L);
        right.writeElement(NodeId.fromInt(9), 1L, 0L);

        assert ContextRelationship.GREATER_THAN ==
            cc.diff(left.context, right.context);
       
        // less than: left has subset of nodes (counts equal)
        left = ContextState.allocate(3, 0);
        left.writeElement(NodeId.fromInt(3), 3L, 0L);
        left.writeElement(NodeId.fromInt(6), 2L, 0L);
        left.writeElement(NodeId.fromInt(9), 1L, 0L);

        right = ContextState.allocate(4, 0);
        right.writeElement(NodeId.fromInt(3),  3L, 0L);
        right.writeElement(NodeId.fromInt(6),  2L, 0L);
        right.writeElement(NodeId.fromInt(9),  1L, 0L);
        right.writeElement(NodeId.fromInt(12), 0L, 0L);

        assert ContextRelationship.LESS_THAN ==
            cc.diff(left.context, right.context);

        // greater than: equal nodes, but left has higher counts
        left = ContextState.allocate(3, 0);
        left.writeElement(NodeId.fromInt(3), 3L, 0L);
        left.writeElement(NodeId.fromInt(6), 2L, 0L);
        left.writeElement(NodeId.fromInt(9), 3L, 0L);

        right = ContextState.allocate(3, 0);
        right.writeElement(NodeId.fromInt(3), 3L, 0L);
        right.writeElement(NodeId.fromInt(6), 2L, 0L);
        right.writeElement(NodeId.fromInt(9), 1L, 0L);

        assert ContextRelationship.GREATER_THAN ==
            cc.diff(left.context, right.context);

        // less than: equal nodes, but right has higher counts
        left = ContextState.allocate(3, 0);
        left.writeElement(NodeId.fromInt(3), 3L, 0L);
        left.writeElement(NodeId.fromInt(6), 2L, 0L);
        left.writeElement(NodeId.fromInt(9), 3L, 0L);

        right = ContextState.allocate(3, 0);
        right.writeElement(NodeId.fromInt(3), 3L, 0L);
        right.writeElement(NodeId.fromInt(6), 9L, 0L);
        right.writeElement(NodeId.fromInt(9), 3L, 0L);

        assert ContextRelationship.LESS_THAN ==
            cc.diff(left.context, right.context);

        // disjoint: right and left have disjoint node sets
        left = ContextState.allocate(3, 0);
        left.writeElement(NodeId.fromInt(3), 1L, 0L);
        left.writeElement(NodeId.fromInt(4), 1L, 0L);
        left.writeElement(NodeId.fromInt(9), 1L, 0L);

        right = ContextState.allocate(3, 0);
        right.writeElement(NodeId.fromInt(3), 1L, 0L);
        right.writeElement(NodeId.fromInt(6), 1L, 0L);
        right.writeElement(NodeId.fromInt(9), 1L, 0L);

        assert ContextRelationship.DISJOINT ==
            cc.diff(left.context, right.context);

        left = ContextState.allocate(3, 0);
        left.writeElement(NodeId.fromInt(3), 1L, 0L);
        left.writeElement(NodeId.fromInt(4), 1L, 0L);
        left.writeElement(NodeId.fromInt(9), 1L, 0L);

        right = ContextState.allocate(3, 0);
        right.writeElement(NodeId.fromInt(2),  1L, 0L);
        right.writeElement(NodeId.fromInt(6),  1L, 0L);
        right.writeElement(NodeId.fromInt(12), 1L, 0L);

        assert ContextRelationship.DISJOINT ==
            cc.diff(left.context, right.context);

        // disjoint: equal nodes, but right and left have higher counts in differing nodes
        left = ContextState.allocate(3, 0);
        left.writeElement(NodeId.fromInt(3), 1L, 0L);
        left.writeElement(NodeId.fromInt(6), 3L, 0L);
        left.writeElement(NodeId.fromInt(9), 1L, 0L);

        right = ContextState.allocate(3, 0);
        right.writeElement(NodeId.fromInt(3), 1L, 0L);
        right.writeElement(NodeId.fromInt(6), 1L, 0L);
        right.writeElement(NodeId.fromInt(9), 5L, 0L);

        assert ContextRelationship.DISJOINT ==
            cc.diff(left.context, right.context);

        left = ContextState.allocate(3, 0);
        left.writeElement(NodeId.fromInt(3), 2L, 0L);
        left.writeElement(NodeId.fromInt(6), 3L, 0L);
        left.writeElement(NodeId.fromInt(9), 1L, 0L);

        right = ContextState.allocate(3, 0);
        right.writeElement(NodeId.fromInt(3), 1L, 0L);
        right.writeElement(NodeId.fromInt(6), 9L, 0L);
        right.writeElement(NodeId.fromInt(9), 5L, 0L);

        assert ContextRelationship.DISJOINT ==
            cc.diff(left.context, right.context);

        // disjoint: left has more nodes, but lower counts
        left = ContextState.allocate(4, 0);
        left.writeElement(NodeId.fromInt(3),  2L, 0L);
        left.writeElement(NodeId.fromInt(6),  3L, 0L);
        left.writeElement(NodeId.fromInt(9),  1L, 0L);
        left.writeElement(NodeId.fromInt(12), 1L, 0L);

        right = ContextState.allocate(3, 0);
        right.writeElement(NodeId.fromInt(3), 4L, 0L);
        right.writeElement(NodeId.fromInt(6), 9L, 0L);
        right.writeElement(NodeId.fromInt(9), 5L, 0L);

        assert ContextRelationship.DISJOINT ==
            cc.diff(left.context, right.context);
       
        // disjoint: left has less nodes, but higher counts
        left = ContextState.allocate(3, 0);
        left.writeElement(NodeId.fromInt(3), 5L, 0L);
        left.writeElement(NodeId.fromInt(6), 3L, 0L);
        left.writeElement(NodeId.fromInt(9), 2L, 0L);

        right = ContextState.allocate(4, 0);
        right.writeElement(NodeId.fromInt(3),  4L, 0L);
        right.writeElement(NodeId.fromInt(6),  3L, 0L);
        right.writeElement(NodeId.fromInt(9),  2L, 0L);
        right.writeElement(NodeId.fromInt(12), 1L, 0L);

        assert ContextRelationship.DISJOINT ==
            cc.diff(left.context, right.context);

        // disjoint: mixed nodes and counts
        left = ContextState.allocate(3, 0);
        left.writeElement(NodeId.fromInt(3), 5L, 0L);
        left.writeElement(NodeId.fromInt(6), 2L, 0L);
        left.writeElement(NodeId.fromInt(9), 2L, 0L);

        right = ContextState.allocate(4, 0);
        right.writeElement(NodeId.fromInt(3),  4L, 0L);
        right.writeElement(NodeId.fromInt(6),  3L, 0L);
        right.writeElement(NodeId.fromInt(9),  2L, 0L);
        right.writeElement(NodeId.fromInt(12), 1L, 0L);

        assert ContextRelationship.DISJOINT ==
            cc.diff(left.context, right.context);

        left = ContextState.allocate(4, 0);
        left.writeElement(NodeId.fromInt(3), 5L, 0L);
        left.writeElement(NodeId.fromInt(6), 2L, 0L);
        left.writeElement(NodeId.fromInt(7), 2L, 0L);
        left.writeElement(NodeId.fromInt(9), 2L, 0L);

        right = ContextState.allocate(3, 0);
        right.writeElement(NodeId.fromInt(3), 4L, 0L);
        right.writeElement(NodeId.fromInt(6), 3L, 0L);
        right.writeElement(NodeId.fromInt(9), 2L, 0L);

        assert ContextRelationship.DISJOINT ==
            cc.diff(left.context, right.context);
    }
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    @Test
    public void testMerge()
    {
        // note: local counts aggregated; remote counts are reconciled (i.e. take max)
        ContextState left = ContextState.allocate(4, 1);
        left.writeElement(NodeId.fromInt(1), 1L, 1L);
        left.writeElement(NodeId.fromInt(2), 2L, 2L);
        left.writeElement(NodeId.fromInt(4), 6L, 3L);
        left.writeElement(NodeId.getLocalId(), 7L, 3L, true);

        ContextState right = ContextState.allocate(3, 1);
        right.writeElement(NodeId.fromInt(4), 4L, 4L);
        right.writeElement(NodeId.fromInt(5), 5L, 5L);
        right.writeElement(NodeId.getLocalId(), 2L, 9L, true);

        ByteBuffer merged = cc.merge(left.context, right.context);
        int hd = 4;

        assertEquals(hd + 5 * stepLength, merged.remaining());
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    }

    @Test
    public void testTotal()
    {
        ContextState left = ContextState.allocate(4, 1);
        left.writeElement(NodeId.fromInt(1), 1L, 1L);
        left.writeElement(NodeId.fromInt(2), 2L, 2L);
        left.writeElement(NodeId.fromInt(4), 3L, 3L);
        left.writeElement(NodeId.getLocalId(), 3L, 3L, true);

        ContextState right = ContextState.allocate(3, 1);
        right.writeElement(NodeId.fromInt(4), 4L, 4L);
        right.writeElement(NodeId.fromInt(5), 5L, 5L);
        right.writeElement(NodeId.getLocalId(), 9L, 9L, true);

        ByteBuffer merged = cc.merge(left.context, right.context);

        // 127.0.0.1: 12 (3+9)
        // 0.0.0.1:    1
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        List<NodeId.NodeIdRecord> records = new ArrayList<NodeId.NodeIdRecord>();
        records.add(new NodeId.NodeIdRecord(id1, 2L));
        records.add(new NodeId.NodeIdRecord(id3, 4L));

        // Destination of merge is a delta
        ContextState ctx = ContextState.allocate(5, 2);
        ctx.writeElement(id1, 1L, 1L);
        ctx.writeElement(NodeId.fromInt(2), 2L, 2L);
        ctx.writeElement(id3, 3L, 3L, true);
        ctx.writeElement(NodeId.fromInt(4), 6L, 3L);
        ctx.writeElement(NodeId.fromInt(5), 7L, 3L, true);

        ByteBuffer merger = cc.computeOldShardMerger(ctx.context, records);
        ContextState m = new ContextState(merger);

        assert m.getNodeId().equals(id1);
        assert m.getClock() <= -now;
        assert m.getCount() == 0;
        m.moveToNext();
        assert m.getNodeId().equals(id3);
        assert m.getClock() == 4L;
        assert m.getCount() == 1L;
        assert cc.total(ctx.context) == cc.total(cc.merge(ctx.context, merger));

        // Source of merge is a delta
        ctx = ContextState.allocate(4, 1);
        ctx.writeElement(id1, 1L, 1L, true);
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        runTotal(bumpedSlab());
    }

    private void runTotal(AbstractAllocator allocator)
    {
        ContextState mixed = ContextState.allocate(0, 1, 4, allocator);
        mixed.writeRemote(CounterId.fromInt(1), 1L, 1L);
        mixed.writeRemote(CounterId.fromInt(2), 2L, 2L);
        mixed.writeRemote(CounterId.fromInt(4), 4L, 4L);
        mixed.writeRemote(CounterId.fromInt(5), 5L, 5L);
        mixed.writeLocal(CounterId.getLocalId(), 12L, 12L);
        assertEquals(24L, cc.total(mixed.context));

        ContextState global = ContextState.allocate(3, 0, 0, allocator);
        global.writeGlobal(CounterId.fromInt(1), 1L, 1L);
        global.writeGlobal(CounterId.fromInt(2), 2L, 2L);
        global.writeGlobal(CounterId.fromInt(3), 3L, 3L);
        assertEquals(6L, cc.total(global.context));
    }
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