| // Copyright 2019 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.platform; |
| |
| import com.google.common.annotations.VisibleForTesting; |
| import com.google.devtools.build.lib.runtime.BlazeModule; |
| import com.google.devtools.build.lib.runtime.CommandEnvironment; |
| import com.google.devtools.build.lib.util.AbruptExitException; |
| |
| /** Prevents the computer from going to sleep while a Bazel command is running. */ |
| public final class SleepPreventionModule extends BlazeModule { |
| |
| /** Methods for dealing with sleep prevention on local hardware. */ |
| @VisibleForTesting |
| public static final class SleepPrevention extends JniLoader { |
| /** |
| * Push a request to disable automatic sleep for hardware. Useful for making sure computers |
| * don't go to sleep during long builds. Must be matched with a {@link #popDisableSleep} call. |
| * |
| * @return 0 on success, -1 if sleep is not supported. |
| */ |
| public static native int pushDisableSleep(); |
| |
| /** |
| * Pop a request to disable automatic sleep for hardware. Useful for making sure computers don't |
| * go to sleep during long builds. Must be matched with a previous {@link #pushDisableSleep} |
| * call. |
| * |
| * @return 0 on success, -1 if sleep is not supported. |
| */ |
| public static native int popDisableSleep(); |
| } |
| |
| @Override |
| public void beforeCommand(CommandEnvironment env) throws AbruptExitException { |
| if (JniLoader.jniEnabled()) { |
| SleepPrevention.pushDisableSleep(); |
| } |
| } |
| |
| @Override |
| public void afterCommand() throws AbruptExitException { |
| if (JniLoader.jniEnabled()) { |
| SleepPrevention.popDisableSleep(); |
| } |
| } |
| } |