hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/CompilerConfigurationFactory.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/CompilerConfigurationFactory.java Thu Feb 16 15:46:09 2017 -0800
@@ -0,0 +1,203 @@
+/*
+ * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+package org.graalvm.compiler.hotspot;
+
+import static jdk.vm.ci.common.InitTimer.timer;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.IdentityHashMap;
+import java.util.List;
+import java.util.stream.Collectors;
+
+import org.graalvm.compiler.debug.GraalError;
+import org.graalvm.compiler.options.Option;
+import org.graalvm.compiler.options.OptionType;
+import org.graalvm.compiler.options.OptionValue;
+import org.graalvm.compiler.phases.tiers.CompilerConfiguration;
+import org.graalvm.compiler.serviceprovider.GraalServices;
+
+import jdk.vm.ci.code.Architecture;
+import jdk.vm.ci.common.InitTimer;
+
+/**
+ * A factory that creates the {@link CompilerConfiguration} the Graal compiler will use. Each
+ * factory must have a unique {@link #name} and {@link #autoSelectionPriority}. The latter imposes a
+ * total ordering between factories for the purpose of auto-selecting the factory to use.
+ */
+public abstract class CompilerConfigurationFactory implements Comparable<CompilerConfigurationFactory> {
+
+ static class Options {
+ // @formatter:off
+ @Option(help = "Names the Graal compiler configuration to use. If ommitted, the compiler configuration " +
+ "with the highest auto-selection priority is used. To see the set of available configurations, " +
+ "supply the value 'help' to this option.", type = OptionType.Expert)
+ public static final OptionValue<String> CompilerConfiguration = new OptionValue<>(null);
+ // @formatter:on
+ }
+
+ /**
+ * The name of this factory. This must be unique across all factory instances and is used when
+ * selecting a factory based on the value of {@link Options#CompilerConfiguration}.
+ */
+ private final String name;
+
+ /**
+ * The priority of this factory. This must be unique across all factory instances and is used
+ * when selecting a factory when {@link Options#CompilerConfiguration} is omitted
+ */
+ private final int autoSelectionPriority;
+
+ protected CompilerConfigurationFactory(String name, int autoSelectionPriority) {
+ this.name = name;
+ this.autoSelectionPriority = autoSelectionPriority;
+ assert checkAndAddNewFactory(this);
+ }
+
+ public abstract CompilerConfiguration createCompilerConfiguration();
+
+ /**
+ * Collect the set of available {@linkplain HotSpotBackendFactory backends} for this compiler
+ * configuration.
+ */
+ public BackendMap createBackendMap() {
+ // default to backend with the same name as the compiler configuration
+ return new DefaultBackendMap(name);
+ }
+
+ public interface BackendMap {
+ HotSpotBackendFactory getBackendFactory(Architecture arch);
+ }
+
+ public static class DefaultBackendMap implements BackendMap {
+
+ private final IdentityHashMap<Class<? extends Architecture>, HotSpotBackendFactory> backends = new IdentityHashMap<>();
+
+ @SuppressWarnings("try")
+ public DefaultBackendMap(String backendName) {
+ try (InitTimer t = timer("HotSpotBackendFactory.register")) {
+ for (HotSpotBackendFactory backend : GraalServices.load(HotSpotBackendFactory.class)) {
+ if (backend.getName().equals(backendName)) {
+ Class<? extends Architecture> arch = backend.getArchitecture();
+ HotSpotBackendFactory oldEntry = backends.put(arch, backend);
+ assert oldEntry == null || oldEntry == backend : "duplicate Graal backend";
+ }
+ }
+ }
+ }
+
+ @Override
+ public final HotSpotBackendFactory getBackendFactory(Architecture arch) {
+ return backends.get(arch.getClass());
+ }
+ }
+
+ @Override
+ public int compareTo(CompilerConfigurationFactory o) {
+ if (autoSelectionPriority > o.autoSelectionPriority) {
+ return -1;
+ }
+ if (autoSelectionPriority < o.autoSelectionPriority) {
+ return 1;
+ }
+ assert this == o : "distinct compiler configurations cannot have the same auto selection priority";
+ return 0;
+ }
+
+ @SuppressWarnings("all")
+ private static boolean assertionsEnabled() {
+ boolean assertionsEnabled = false;
+ assert assertionsEnabled = true;
+ return assertionsEnabled;
+ }
+
+ /**
+ * List used to assert uniqueness of {@link #name} and {@link #autoSelectionPriority} across all
+ * {@link CompilerConfigurationFactory} instances.
+ */
+ private static final List<CompilerConfigurationFactory> factories = assertionsEnabled() ? new ArrayList<>() : null;
+
+ private static boolean checkAndAddNewFactory(CompilerConfigurationFactory factory) {
+ for (CompilerConfigurationFactory other : factories) {
+ assert !other.name.equals(factory.name) : factory.getClass().getName() + " cannot have the same selector as " + other.getClass().getName() + ": " + factory.name;
+ assert other.autoSelectionPriority != factory.autoSelectionPriority : factory.getClass().getName() + " cannot have the same auto-selection priority as " + other.getClass().getName() +
+ ": " + factory.autoSelectionPriority;
+ }
+ factories.add(factory);
+ return true;
+ }
+
+ /**
+ * @return sorted list of {@link CompilerConfigurationFactory}s
+ */
+ private static List<CompilerConfigurationFactory> getAllCandidates() {
+ List<CompilerConfigurationFactory> candidates = new ArrayList<>();
+ for (CompilerConfigurationFactory candidate : GraalServices.load(CompilerConfigurationFactory.class)) {
+ candidates.add(candidate);
+ }
+ Collections.sort(candidates);
+ return candidates;
+ }
+
+ /**
+ * Selects and instantiates a {@link CompilerConfigurationFactory}. The selection algorithm is
+ * as follows: if {@code name} is non-null, then select the factory with the same name else if
+ * {@link Options#CompilerConfiguration}{@code .getValue()} is non-null then select the factory
+ * whose name matches the value else select the factory with the highest
+ * {@link #autoSelectionPriority} value.
+ *
+ * @param name the name of the compiler configuration to select (optional)
+ */
+ @SuppressWarnings("try")
+ public static CompilerConfigurationFactory selectFactory(String name) {
+ CompilerConfigurationFactory factory = null;
+ try (InitTimer t = timer("CompilerConfigurationFactory.selectFactory")) {
+ String value = name == null ? Options.CompilerConfiguration.getValue() : name;
+ if ("help".equals(value)) {
+ System.out.println("The available Graal compiler configurations are:");
+ for (CompilerConfigurationFactory candidate : getAllCandidates()) {
+ System.out.println(" " + candidate.name);
+ }
+ System.exit(0);
+ } else if (value != null) {
+ for (CompilerConfigurationFactory candidate : GraalServices.load(CompilerConfigurationFactory.class)) {
+ if (candidate.name.equals(value)) {
+ factory = candidate;
+ break;
+ }
+ }
+ if (factory == null) {
+ throw new GraalError("Graal compiler configuration '%s' not found. Available configurations are: %s", value,
+ getAllCandidates().stream().map(c -> c.name).collect(Collectors.joining(", ")));
+ }
+ } else {
+ List<CompilerConfigurationFactory> candidates = getAllCandidates();
+ if (candidates.isEmpty()) {
+ throw new GraalError("No %s providers found", CompilerConfigurationFactory.class.getName());
+ }
+ factory = candidates.get(0);
+ }
+ }
+ return factory;
+ }
+}