blob: 95116cd88c7f12c8f6a4ee6ab51e5c4aefc540cd [file] [log] [blame]
// Copyright 2016 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.actions;
import com.google.devtools.build.lib.jni.JniLoader;
import com.google.devtools.build.lib.unix.NativePosixSystem;
import java.io.IOException;
import javax.annotation.Nullable;
/**
* This class estimates the local host's resource capacity for Darwin.
*/
public class LocalHostResourceManagerDarwin {
private static int getLogicalCpuCount() throws IOException {
return (int) NativePosixSystem.sysctlbynameGetLong("hw.logicalcpu");
}
private static double getMemoryInMb() throws IOException {
return NativePosixSystem.sysctlbynameGetLong("hw.memsize") / 1E6;
}
@Nullable
public static ResourceSet getLocalHostResources() {
if (!JniLoader.isJniAvailable()) {
return null;
}
try {
int logicalCpuCount = getLogicalCpuCount();
double ramMb = getMemoryInMb();
return ResourceSet.create(
ramMb,
logicalCpuCount,
Integer.MAX_VALUE);
} catch (IOException e) {
return null;
}
}
}