Mercurial > hg > graal-jvmci-8
comparison graal/com.oracle.jvmci.hotspot/src/com/oracle/jvmci/hotspot/HotSpotVmSymbols.java @ 21551:5324104ac4f3
moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
| author | Doug Simon <doug.simon@oracle.com> |
|---|---|
| date | Tue, 26 May 2015 17:13:37 +0200 |
| parents | |
| children |
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| 21550:f48a6cea31eb | 21551:5324104ac4f3 |
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| 1 /* | |
| 2 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. | |
| 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
| 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 20 * or visit www.oracle.com if you need additional information or have any | |
| 21 * questions. | |
| 22 */ | |
| 23 package com.oracle.jvmci.hotspot; | |
| 24 | |
| 25 import static com.oracle.jvmci.common.UnsafeAccess.*; | |
| 26 import static com.oracle.jvmci.hotspot.HotSpotJVMCIRuntime.*; | |
| 27 import sun.misc.*; | |
| 28 | |
| 29 /** | |
| 30 * Class to access the C++ {@code vmSymbols} table. | |
| 31 */ | |
| 32 public final class HotSpotVmSymbols { | |
| 33 | |
| 34 /** | |
| 35 * Returns the symbol in the {@code vmSymbols} table at position {@code index} as {@link String} | |
| 36 * . | |
| 37 * | |
| 38 * @param index position in the symbol table | |
| 39 * @return the symbol at position id | |
| 40 */ | |
| 41 public static String symbolAt(int index) { | |
| 42 HotSpotJVMCIRuntimeProvider runtime = runtime(); | |
| 43 HotSpotVMConfig config = runtime.getConfig(); | |
| 44 assert config.vmSymbolsFirstSID <= index && index < config.vmSymbolsSIDLimit : "index " + index + " is out of bounds"; | |
| 45 assert config.symbolPointerSize == Unsafe.ADDRESS_SIZE : "the following address read is broken"; | |
| 46 return runtime.getCompilerToVM().getSymbol(unsafe.getAddress(config.vmSymbolsSymbols + index * config.symbolPointerSize)); | |
| 47 } | |
| 48 } |