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*
* 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).
*
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package com.oracle.svm.core.c.function;
import org.graalvm.nativeimage.ImageSingletons;
import org.graalvm.nativeimage.Isolate;
import org.graalvm.nativeimage.IsolateThread;
import org.graalvm.nativeimage.Isolates.CreateIsolateParameters;
import org.graalvm.nativeimage.Isolates.IsolateException;
import org.graalvm.nativeimage.StackValue;
import org.graalvm.nativeimage.c.type.CTypeConversion;
import org.graalvm.nativeimage.hosted.Feature;
import org.graalvm.nativeimage.impl.IsolateSupport;
import org.graalvm.word.WordFactory;
import com.oracle.svm.core.SubstrateOptions;
import com.oracle.svm.core.annotate.AutomaticFeature;
import com.oracle.svm.core.c.function.CEntryPointNativeFunctions.IsolateThreadPointer;
import com.oracle.svm.core.option.SubstrateOptionsParser;
public final class IsolateSupportImpl implements IsolateSupport {
private static final String ISOLATES_DISABLED_MESSAGE = "Spawning of multiple isolates is disabled, use " +
SubstrateOptionsParser.commandArgument(SubstrateOptions.SpawnIsolates, "+") + " option.";
static void initialize() {
ImageSingletons.add(IsolateSupport.class, new IsolateSupportImpl());
}
private IsolateSupportImpl() {
}
@Override
public IsolateThread createIsolate(CreateIsolateParameters parameters) throws IsolateException {
if (!SubstrateOptions.SpawnIsolates.getValue()) {
throw new IsolateException(ISOLATES_DISABLED_MESSAGE);
}
try (CTypeConversion.CCharPointerHolder auxImagePath = CTypeConversion.toCString(parameters.getAuxiliaryImagePath())) {
CEntryPointCreateIsolateParameters params = StackValue.get(CEntryPointCreateIsolateParameters.class);
params.setReservedSpaceSize(parameters.getReservedAddressSpaceSize());
params.setAuxiliaryImagePath(auxImagePath.get());
params.setAuxiliaryImageReservedSpaceSize(parameters.getAuxiliaryImageReservedSpaceSize());
params.setVersion(2);
IsolateThreadPointer isolateThreadPtr = StackValue.get(IsolateThreadPointer.class);
throwOnError(CEntryPointNativeFunctions.createIsolate(params, WordFactory.nullPointer(), isolateThreadPtr));
return isolateThreadPtr.read();
}
}
@Override
public IsolateThread attachCurrentThread(Isolate isolate) throws IsolateException {
IsolateThreadPointer isolateThread = StackValue.get(IsolateThreadPointer.class);
throwOnError(CEntryPointNativeFunctions.attachThread(isolate, isolateThread));
return isolateThread.read();
}
@Override
public IsolateThread getCurrentThread(Isolate isolate) throws IsolateException {
return CEntryPointNativeFunctions.getCurrentThread(isolate);
}
@Override
public Isolate getIsolate(IsolateThread thread) throws IsolateException {
return CEntryPointNativeFunctions.getIsolate(thread);
}
@Override
public void detachThread(IsolateThread thread) throws IsolateException {
throwOnError(CEntryPointNativeFunctions.detachThread(thread));
}
@Override
public void tearDownIsolate(IsolateThread thread) throws IsolateException {
if (SubstrateOptions.SpawnIsolates.getValue()) {
throwOnError(CEntryPointNativeFunctions.tearDownIsolate(thread));
} else {
throw new IsolateException(ISOLATES_DISABLED_MESSAGE);
}
}
private static void throwOnError(int code) {
if (code != CEntryPointErrors.NO_ERROR) {
String message = CEntryPointErrors.getDescription(code);
throw new IsolateException(message);
}
}
}
@AutomaticFeature
class IsolateSupportFeature implements Feature {
@Override
public void afterRegistration(AfterRegistrationAccess access) {
IsolateSupportImpl.initialize();
}
}