/*
* Copyright (c) 2015, 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
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package org.graalvm.compiler.hotspot;
import static org.graalvm.compiler.core.common.util.ModuleAPI.addExports;
import static org.graalvm.compiler.core.common.util.ModuleAPI.addOpens;
import static org.graalvm.compiler.core.common.util.ModuleAPI.getModule;
import static org.graalvm.compiler.core.common.util.Util.JAVA_SPECIFICATION_VERSION;
import org.graalvm.compiler.serviceprovider.ServiceProvider;
import jdk.vm.ci.hotspot.HotSpotVMEventListener;
import jdk.vm.ci.runtime.JVMCICompilerFactory;
import jdk.vm.ci.services.JVMCIServiceLocator;
import jdk.vm.ci.services.Services;
@ServiceProvider(JVMCIServiceLocator.class)
public final class HotSpotGraalJVMCIServiceLocator extends JVMCIServiceLocator {
/**
* Holds the state shared between all {@link HotSpotGraalJVMCIServiceLocator} instances. This is
* necessary as {@link Services} can create a new instance of a service provider each time
* {@link Services#load(Class)} or {@link Services#loadSingle(Class, boolean)} is called.
*/
private static final class Shared {
static final Shared SINGLETON = new Shared();
private boolean exportsAdded;
/**
* Dynamically exports and opens various internal JDK packages to the Graal module. This
* requires only a single {@code --add-exports=java.base/jdk.internal.module=<Graal module>}
* on the VM command line instead of a {@code --add-exports} instance for each JDK internal
* package used by Graal.
*/
private void addExports() {
if (JAVA_SPECIFICATION_VERSION >= 9 && !exportsAdded) {
Object javaBaseModule = getModule.invoke(String.class);
Object graalModule = getModule.invoke(getClass());
addExports.invokeStatic(javaBaseModule, "jdk.internal.misc", graalModule);
addExports.invokeStatic(javaBaseModule, "jdk.internal.jimage", graalModule);
addExports.invokeStatic(javaBaseModule, "com.sun.crypto.provider", graalModule);
addOpens.invokeStatic(javaBaseModule, "jdk.internal.misc", graalModule);
addOpens.invokeStatic(javaBaseModule, "jdk.internal.jimage", graalModule);
addOpens.invokeStatic(javaBaseModule, "com.sun.crypto.provider", graalModule);
exportsAdded = true;
}
}
<T> T getProvider(Class<T> service, HotSpotGraalJVMCIServiceLocator locator) {
if (service == JVMCICompilerFactory.class) {
addExports();
return service.cast(new HotSpotGraalCompilerFactory(locator));
} else if (service == HotSpotVMEventListener.class) {
if (graalRuntime != null) {
addExports();
return service.cast(new HotSpotGraalVMEventListener(graalRuntime));
}
}
return null;
}
private HotSpotGraalRuntime graalRuntime;
/**
* Notifies this object of the compiler created via {@link HotSpotGraalJVMCIServiceLocator}.
*/
void onCompilerCreation(HotSpotGraalCompiler compiler) {
assert this.graalRuntime == null : "only expect a single JVMCICompiler to be created";
this.graalRuntime = (HotSpotGraalRuntime) compiler.getGraalRuntime();
}
}
@Override
public <T> T getProvider(Class<T> service) {
return Shared.SINGLETON.getProvider(service, this);
}
/**
* Notifies this object of the compiler created via {@link HotSpotGraalJVMCIServiceLocator}.
*/
@SuppressWarnings("static-method")
void onCompilerCreation(HotSpotGraalCompiler compiler) {
Shared.SINGLETON.onCompilerCreation(compiler);
}
}