1 /* 2 * Copyright (C) 2024 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.systemui.kairos.internal 18 19 /* 20 Dmux 21 Muxes + Branch 22 */ 23 internal sealed interface SchedulableNode { 24 /** schedule this node w/ given NodeEvalScope */ schedulenull25 fun schedule(logIndent: Int, evalScope: EvalScope) 26 27 fun adjustDirectUpstream(scheduler: Scheduler, oldDepth: Int, newDepth: Int) 28 29 fun moveIndirectUpstreamToDirect( 30 scheduler: Scheduler, 31 oldIndirectDepth: Int, 32 oldIndirectSet: Set<MuxDeferredNode<*, *, *>>, 33 newDirectDepth: Int, 34 ) 35 36 fun adjustIndirectUpstream( 37 scheduler: Scheduler, 38 oldDepth: Int, 39 newDepth: Int, 40 removals: Set<MuxDeferredNode<*, *, *>>, 41 additions: Set<MuxDeferredNode<*, *, *>>, 42 ) 43 44 fun moveDirectUpstreamToIndirect( 45 scheduler: Scheduler, 46 oldDirectDepth: Int, 47 newIndirectDepth: Int, 48 newIndirectSet: Set<MuxDeferredNode<*, *, *>>, 49 ) 50 51 fun removeIndirectUpstream( 52 scheduler: Scheduler, 53 depth: Int, 54 indirectSet: Set<MuxDeferredNode<*, *, *>>, 55 ) 56 57 fun removeDirectUpstream(scheduler: Scheduler, depth: Int) 58 } 59 60 /* 61 All but Dmux 62 */ 63 internal sealed interface PullNode<out A> { 64 /** 65 * query the result of this node within the current transaction. if the node is cached, this 66 * will read from the cache, otherwise it will perform a full evaluation, even if invoked 67 * multiple times within a transaction. 68 */ 69 fun getPushEvent(logIndent: Int, evalScope: EvalScope): A 70 } 71 72 /* 73 Muxes + DmuxBranch 74 */ 75 internal sealed interface PushNode<A> : PullNode<A> { 76 hasCurrentValuenull77 fun hasCurrentValue(logIndent: Int, evalScope: EvalScope): Boolean 78 79 val depthTracker: DepthTracker 80 81 fun removeDownstream(downstream: Schedulable) 82 83 /** called during cleanup phase */ 84 fun deactivateIfNeeded() 85 86 /** called from mux nodes after severs */ 87 fun scheduleDeactivationIfNeeded(evalScope: EvalScope) 88 89 fun addDownstream(downstream: Schedulable) 90 91 fun removeDownstreamAndDeactivateIfNeeded(downstream: Schedulable) 92 } 93