| // Copyright 2020 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.bazel.rules.ninja.parser; |
| |
| |
| import com.google.common.collect.ImmutableSortedMap; |
| import com.google.devtools.build.lib.bazel.rules.ninja.file.GenericParsingException; |
| import javax.annotation.concurrent.Immutable; |
| |
| /** |
| * Ninja pool representation. A Ninja pool allocates rules to use a finite number of concurrent jobs |
| * instead of the default parallelism computed by Ninja. |
| * |
| * <p>While there is no current logical mapping between pool depths and execution phase resource |
| * scheduling, this exists for the completeness of the {@link NinjaParser}, and bringing pool |
| * objects into {@link NinjaScope}. |
| * |
| * <p>{@link NinjaVariableValue} to be replaced for each target according to the scope rules. |
| * |
| * <p>See <a href="https://ninja-build.org/manual.html#ref_pool">Ninja docs</a> for more info. |
| */ |
| @Immutable |
| public final class NinjaPool { |
| private final String name; |
| private final Integer depth; |
| |
| public NinjaPool(String name, ImmutableSortedMap<NinjaPoolVariable, NinjaVariableValue> variables) |
| throws GenericParsingException { |
| this.name = name; |
| this.depth = validateDepth(variables.get(NinjaPoolVariable.DEPTH)); |
| } |
| |
| /** Returns name of the ninja pool. */ |
| public String getName() { |
| return name; |
| } |
| |
| /** Returns depth of the ninja pool, or the maximum concurrent number of jobs in this pool. */ |
| public Integer getDepth() { |
| return depth; |
| } |
| |
| private static Integer validateDepth(NinjaVariableValue value) throws GenericParsingException { |
| String rawValue = value.getRawText(); |
| try { |
| return Integer.parseInt(rawValue); |
| } catch (NumberFormatException e) { |
| throw new GenericParsingException( |
| String.format("Expected an integer for the 'depth' value, but got '%s'.", rawValue), e); |
| } |
| } |
| } |