| /* |
| * Copyright (C) 2015 The Android Open Source Project |
| * |
| * 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.android.server.pm; |
| |
| import android.content.pm.parsing.AndroidPackage; |
| import android.os.Build; |
| import android.os.SystemProperties; |
| import android.text.TextUtils; |
| import android.util.ArraySet; |
| |
| import dalvik.system.VMRuntime; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| /** |
| * Provides various methods for obtaining and converting of instruction sets. |
| * |
| * @hide |
| */ |
| public class InstructionSets { |
| private static final String PREFERRED_INSTRUCTION_SET = |
| VMRuntime.getInstructionSet(Build.SUPPORTED_ABIS[0]); |
| |
| public static String[] getAppDexInstructionSets(String primaryCpuAbi, String secondaryCpuAbi) { |
| if (primaryCpuAbi != null) { |
| if (secondaryCpuAbi != null) { |
| return new String[] { |
| VMRuntime.getInstructionSet(primaryCpuAbi), |
| VMRuntime.getInstructionSet(secondaryCpuAbi) }; |
| } else { |
| return new String[] { |
| VMRuntime.getInstructionSet(primaryCpuAbi) }; |
| } |
| } |
| |
| return new String[] { getPreferredInstructionSet() }; |
| } |
| |
| public static String getPreferredInstructionSet() { |
| return PREFERRED_INSTRUCTION_SET; |
| } |
| |
| /** |
| * Returns the instruction set that should be used to compile dex code. In the presence of |
| * a native bridge this might be different than the one shared libraries use. |
| */ |
| public static String getDexCodeInstructionSet(String sharedLibraryIsa) { |
| // TODO b/19550105 Build mapping once instead of querying each time |
| String dexCodeIsa = SystemProperties.get("ro.dalvik.vm.isa." + sharedLibraryIsa); |
| return TextUtils.isEmpty(dexCodeIsa) ? sharedLibraryIsa : dexCodeIsa; |
| } |
| |
| public static String[] getDexCodeInstructionSets(String[] instructionSets) { |
| ArraySet<String> dexCodeInstructionSets = new ArraySet<String>(instructionSets.length); |
| for (String instructionSet : instructionSets) { |
| dexCodeInstructionSets.add(getDexCodeInstructionSet(instructionSet)); |
| } |
| return dexCodeInstructionSets.toArray(new String[dexCodeInstructionSets.size()]); |
| } |
| |
| /** |
| * Returns deduplicated list of supported instructions for dex code. |
| */ |
| public static String[] getAllDexCodeInstructionSets() { |
| String[] supportedInstructionSets = new String[Build.SUPPORTED_ABIS.length]; |
| for (int i = 0; i < supportedInstructionSets.length; i++) { |
| String abi = Build.SUPPORTED_ABIS[i]; |
| supportedInstructionSets[i] = VMRuntime.getInstructionSet(abi); |
| } |
| return getDexCodeInstructionSets(supportedInstructionSets); |
| } |
| |
| public static List<String> getAllInstructionSets() { |
| final String[] allAbis = Build.SUPPORTED_ABIS; |
| final List<String> allInstructionSets = new ArrayList<String>(allAbis.length); |
| |
| for (String abi : allAbis) { |
| final String instructionSet = VMRuntime.getInstructionSet(abi); |
| if (!allInstructionSets.contains(instructionSet)) { |
| allInstructionSets.add(instructionSet); |
| } |
| } |
| |
| return allInstructionSets; |
| } |
| |
| /** |
| * Calculates the primary instruction set based on the computed Abis of a given package. |
| */ |
| public static String getPrimaryInstructionSet(PackageAbiHelper.Abis abis) { |
| if (abis.primary == null) { |
| return getPreferredInstructionSet(); |
| } |
| |
| return VMRuntime.getInstructionSet(abis.primary); |
| } |
| |
| public static String getPrimaryInstructionSet(AndroidPackage pkg) { |
| if (pkg.getPrimaryCpuAbi() == null) { |
| return getPreferredInstructionSet(); |
| } |
| |
| return VMRuntime.getInstructionSet(pkg.getPrimaryCpuAbi()); |
| } |
| |
| } |