| // Copyright 2021 The Bazel Authors. All rights reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| package com.google.devtools.build.lib.concurrent; |
| |
| /** An Executor that can execute tasks in multiple independent thread pools. */ |
| public interface MultiThreadPoolsQuiescingExecutor extends QuiescingExecutor { |
| /** The types of thread pools to use. */ |
| enum ThreadPoolType { |
| // Suitable for CPU-heavy tasks. Ideally the number of threads is close to the machine's number |
| // of cores. |
| CPU_HEAVY, |
| // Reserved for execution-phase tasks. |
| EXECUTION_PHASE, |
| REGULAR, |
| } |
| |
| /** |
| * Execute the runnable, taking into consideration the preferred thread pool type. |
| * |
| * <p>WARNING: it is the developer's responsibility to check that the appropriate thread pool is |
| * present. |
| */ |
| void execute(Runnable runnable, ThreadPoolType threadPoolType); |
| } |