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annotate graal/com.oracle.truffle.api/src/com/oracle/truffle/api/Truffle.java @ 15603:b7fb36e57da8

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made Graal initialization be driven from Java to simplify sequencing and synchronization
author Doug Simon <doug.simon@oracle.com>
date Mon, 12 May 2014 23:27:07 +0200
parents 51b2999299bc
children e52ad0d3b7d6
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1 /*
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2 * Copyright (c) 2012, 2012, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation. Oracle designates this
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8 * particular file as subject to the "Classpath" exception as provided
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9 * by Oracle in the LICENSE file that accompanied this code.
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10 *
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11 * This code is distributed in the hope that it will be useful, but WITHOUT
a4b84ba6dc2e Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
a4b84ba6dc2e Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
a4b84ba6dc2e Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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14 * version 2 for more details (a copy is included in the LICENSE file that
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15 * accompanied this code).
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16 *
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17 * You should have received a copy of the GNU General Public License version
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18 * 2 along with this work; if not, write to the Free Software Foundation,
a4b84ba6dc2e Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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20 *
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21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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22 * or visit www.oracle.com if you need additional information or have any
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23 * questions.
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24 */
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25 package com.oracle.truffle.api;
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26
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27 import com.oracle.truffle.api.impl.*;
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28
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29 /**
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30 * Class for obtaining the Truffle runtime singleton object of this virtual machine.
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31 */
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32 public class Truffle {
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33
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34 private static final TruffleRuntime RUNTIME;
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35
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36 /**
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37 * Creates a new {@link TruffleRuntime} instance if the runtime has a specialized
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38 * implementation.
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39 *
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40 * @throws UnsatisfiedLinkError if the runtime does not have a specialized implementation of
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41 * {@link TruffleRuntime}
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42 */
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43 private static native TruffleRuntime createRuntime();
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44
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45 public static TruffleRuntime getRuntime() {
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46 return RUNTIME;
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47 }
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48
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49 static {
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50 TruffleRuntime runtime;
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51 try {
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52 runtime = createRuntime();
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53 } catch (UnsatisfiedLinkError e) {
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54 runtime = new DefaultTruffleRuntime();
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55 }
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56 RUNTIME = runtime;
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57 }
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58 }