| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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 org.apache.ignite.internal.processors.platform.compute; |
| |
| import java.io.Serializable; |
| import org.apache.ignite.Ignite; |
| import org.apache.ignite.IgniteCheckedException; |
| import org.apache.ignite.internal.processors.platform.PlatformContext; |
| import org.apache.ignite.internal.processors.platform.callback.PlatformCallbackGateway; |
| import org.apache.ignite.internal.processors.platform.memory.PlatformInputStream; |
| import org.apache.ignite.internal.processors.platform.memory.PlatformMemory; |
| import org.apache.ignite.internal.processors.platform.memory.PlatformOutputStream; |
| import org.apache.ignite.internal.processors.platform.utils.PlatformUtils; |
| import org.apache.ignite.resources.IgniteInstanceResource; |
| |
| /** |
| * Base class for simple computations (Callable, Runnable). |
| * Cleaner alternative to {@link PlatformClosureJob}, uses less wrapping for the underlying object, |
| * and a single callback. |
| */ |
| public abstract class PlatformAbstractFunc implements Serializable { |
| /** */ |
| private static final long serialVersionUID = 0L; |
| |
| /** Serialized platform func. */ |
| private final Object func; |
| |
| /** Handle for local execution. */ |
| @SuppressWarnings("TransientFieldNotInitialized") |
| private final transient long ptr; |
| |
| /** Ignite instance. */ |
| @IgniteInstanceResource |
| protected transient Ignite ignite; |
| |
| /** |
| * Constructor. |
| * |
| * @param func Platform func. |
| * @param ptr Handle for local execution. |
| */ |
| protected PlatformAbstractFunc(Object func, long ptr) { |
| this.ptr = ptr; |
| assert func != null; |
| |
| this.func = func; |
| } |
| |
| /** |
| * Invokes this instance. |
| * |
| * @return Invocation result. |
| */ |
| protected Object invoke() throws IgniteCheckedException { |
| assert ignite != null; |
| |
| PlatformContext ctx = PlatformUtils.platformContext(ignite); |
| |
| try (PlatformMemory mem = ctx.memory().allocate()) { |
| PlatformOutputStream out = mem.output(); |
| |
| if (ptr != 0) { |
| out.writeBoolean(true); |
| out.writeLong(ptr); |
| } else { |
| out.writeBoolean(false); |
| ctx.writer(out).writeObject(func); |
| } |
| |
| out.synchronize(); |
| platformCallback(ctx.gateway(), mem.pointer()); |
| |
| PlatformInputStream in = mem.input(); |
| in.synchronize(); |
| |
| return PlatformUtils.readInvocationResult(ctx, ctx.reader(in)); |
| } |
| } |
| |
| /** |
| * Performs platform callback. |
| * |
| * @param gate Gateway. |
| * @param memPtr Pointer. |
| */ |
| protected abstract void platformCallback(PlatformCallbackGateway gate, long memPtr); |
| } |