Mercurial > hg > truffle
view graal/com.oracle.jvmci.service/src/com/oracle/jvmci/service/Services.java @ 21630:9cc3571ef51d
Add getProfilingInfo(boolean includeNormal, boolean includeOSR) to ResolvedJavaMethod
author | Gilles Duboscq <gilles.m.duboscq@oracle.com> |
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date | Fri, 29 May 2015 14:46:49 +0200 |
parents | 2f92172fa320 |
children | 9966b358bc2b |
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/* * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * 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). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package com.oracle.jvmci.service; import static java.lang.String.*; import java.util.*; import sun.reflect.*; /** * A mechanism on top of the standard {@link ServiceLoader} that enables JVMCI enabled runtime to * efficiently load services marked by {@link Service}. This is important to avoid the performance * overhead of the standard service loader mechanism for services loaded in the runtime * initialization process. */ public class Services { private static final ClassValue<List<Service>> cache = new ClassValue<List<Service>>() { @Override protected List<Service> computeValue(Class<?> type) { Service[] names = getServiceImpls(type); if (names == null || names.length == 0) { throw new InternalError( format("No implementations for %s found (ensure %s extends %s and that in suite.py the \"annotationProcessors\" attribute for the project enclosing %s includes \"com.oracle.jvmci.service.processor\")", type.getSimpleName(), type.getSimpleName(), Service.class, type.getSimpleName())); } return Arrays.asList(names); } }; /** * Gets an {@link Iterable} of the implementations available for a given service. */ @SuppressWarnings("unchecked") @CallerSensitive public static <S> Iterable<S> load(Class<S> service) { // TODO(ds): add SecurityManager checks if (Service.class.isAssignableFrom(service)) { try { return (Iterable<S>) cache.get(service); } catch (UnsatisfiedLinkError e) { // Fall back to standard ServiceLoader } } // Need to use the ClassLoader of the caller ClassLoader cl = Reflection.getCallerClass().getClassLoader(); return ServiceLoader.load(service, cl); } /** * Gets the implementation for a given service for which at most one implementation must be * available. * * @param service the service whose implementation is being requested * @param required specifies if an {@link InternalError} should be thrown if no implementation * of {@code service} is available */ @SuppressWarnings("unchecked") @CallerSensitive public static <S> S loadSingle(Class<S> service, boolean required) { // TODO(ds): add SecurityManager checks Iterable<S> impls = null; if (Service.class.isAssignableFrom(service)) { try { impls = (Iterable<S>) cache.get(service); } catch (UnsatisfiedLinkError e) { // Fall back to standard ServiceLoader } } if (impls == null) { // Need to use the ClassLoader of the caller ClassLoader cl = Reflection.getCallerClass().getClassLoader(); impls = ServiceLoader.load(service, cl); } S singleImpl = null; for (S impl : impls) { if (singleImpl != null) { throw new InternalError(String.format("Multiple %s implementations found: %s, %s", service.getName(), singleImpl.getClass().getName(), impl.getClass().getName())); } singleImpl = impl; } if (singleImpl == null && required) { String javaHome = System.getProperty("java.home"); String vmName = System.getProperty("java.vm.name"); Formatter errorMessage = new Formatter(); errorMessage.format("The VM does not expose required service %s.%n", service.getName()); errorMessage.format("Currently used Java home directory is %s.%n", javaHome); errorMessage.format("Currently used VM configuration is: %s", vmName); throw new UnsupportedOperationException(errorMessage.toString()); } return singleImpl; } private static native <S> S[] getServiceImpls(Class<?> service); }