src/jdk.internal.vm.ci/share/classes/jdk.vm.ci.hotspot/src/jdk/vm/ci/hotspot/HotSpotCompilationRequest.java
author kvn
Wed, 01 May 2019 12:31:29 -0700
changeset 54669 ad45b3802d4e
parent 47216 71c04702a3d5
child 55463 31bf7b93df5d
permissions -rw-r--r--
8220623: [JVMCI] Update JVMCI to support JVMCI based Compiler compiled into shared library Reviewed-by: dnsimon, never, stefank, rehn, neliasso, dholmes, kbarrett, coleenp
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/*
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 * Copyright (c) 2015, 2019, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 */
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package jdk.vm.ci.hotspot;
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import jdk.vm.ci.code.CompilationRequest;
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/**
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 * A compilation request with extra HotSpot specific context such as a compilation identifier and
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 * the address of a {@code JVMCIEnv} object that provides native context for a compilation.
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 */
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public class HotSpotCompilationRequest extends CompilationRequest {
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    /**
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     * Address of the native {@code JVMCICompileState} associated with the request.
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     */
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    private final long compileState;
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    /**
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     * An identifier for the request.
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     */
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    private final int id;
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    /**
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     * Creates a request to compile a method starting at a given BCI and allocates an identifier to
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     * the request.
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     *
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     * @param method the method to be compiled
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     * @param entryBCI the bytecode index (BCI) at which to start compiling where -1 denotes the
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     *            method's entry point
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     * @param compileState address of a native {@code JVMCICompileState} object or 0L
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     */
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    public HotSpotCompilationRequest(HotSpotResolvedJavaMethod method, int entryBCI, long compileState) {
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        this(method, entryBCI, compileState, method.allocateCompileId(entryBCI));
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    }
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    /**
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     * Creates a request to compile a method starting at a given BCI.
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     *
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     * @param method the method to be compiled
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     * @param entryBCI the bytecode index (BCI) at which to start compiling where -1 denotes the
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     *            method's entry point
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     * @param compileState address of a native {@code JVMCICompileState} object or 0L
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     * @param id an identifier for the request
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     */
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    public HotSpotCompilationRequest(HotSpotResolvedJavaMethod method, int entryBCI, long compileState, int id) {
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        super(method, entryBCI);
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        this.compileState = compileState;
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        this.id = id;
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    }
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    @Override
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    public HotSpotResolvedJavaMethod getMethod() {
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        return (HotSpotResolvedJavaMethod) super.getMethod();
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    }
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    /**
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     * Gets the address of the native {@code JVMCICompileState} or 0L if no such object exists. This
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     * method should really be named {@code getCompileState} but must remain as is for API
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     * stability.
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     */
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    public long getJvmciEnv() {
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        return compileState;
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    }
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    /**
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     * Gets the VM allocated identifier for this compilation.
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     */
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    public int getId() {
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        return id;
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    }
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}