Mercurial > hg > truffle
view graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/HotSpotOptions.java @ 18684:137773e5250c
Factor out VM-independent parts of option parsing
author | Christian Wimmer <christian.wimmer@oracle.com> |
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date | Mon, 15 Dec 2014 11:33:31 -0800 |
parents | 4481cf549cfc |
children | e7e868a42b3f |
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/* * Copyright (c) 2011, 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.graal.hotspot; import static com.oracle.graal.compiler.GraalDebugConfig.*; import static com.oracle.graal.hotspot.HotSpotOptionsLoader.*; import static java.lang.Double.*; import java.lang.reflect.*; import com.oracle.graal.api.runtime.*; import com.oracle.graal.compiler.common.*; import com.oracle.graal.debug.*; import com.oracle.graal.options.*; import com.oracle.graal.options.OptionUtils.OptionConsumer; import com.oracle.graal.phases.common.inlining.*; //JaCoCo Exclude /** * Sets Graal options from the HotSpot command line. Such options are distinguished by the * {@link #GRAAL_OPTION_PREFIX} prefix. */ public class HotSpotOptions { private static final String GRAAL_OPTION_PREFIX = "-G:"; /** * Parses the Graal specific options specified to HotSpot (e.g., on the command line). * * @return true if the CITime or CITimeEach HotSpot VM options are set */ private static native boolean parseVMOptions(); static { boolean timeCompilations = parseVMOptions(); if (timeCompilations) { unconditionallyEnableTimerOrMetric(InliningUtil.class, "InlinedBytecodes"); unconditionallyEnableTimerOrMetric(CompilationTask.class, "CompilationTime"); } assert !Debug.Initialization.isDebugInitialized() : "The class " + Debug.class.getName() + " must not be initialized before the Graal runtime has been initialized. " + "This can be fixed by placing a call to " + Graal.class.getName() + ".runtime() on the path that triggers initialization of " + Debug.class.getName(); if (areDebugScopePatternsEnabled()) { System.setProperty(Debug.Initialization.INITIALIZER_PROPERTY_NAME, "true"); } } /** * Ensures {@link HotSpotOptions} is initialized. */ public static void initialize() { } /** * Helper for the VM code called by {@link #parseVMOptions()}. * * @param name the name of a parsed option * @param option the object encapsulating the option * @param spec specification of boolean option value, type of option value or action to take */ static void setOption(String name, OptionValue<?> option, char spec, String stringValue, long primitiveValue) { switch (spec) { case '+': option.setValue(Boolean.TRUE); break; case '-': option.setValue(Boolean.FALSE); break; case '?': OptionUtils.printFlags(options, GRAAL_OPTION_PREFIX); break; case ' ': OptionUtils.printNoMatchMessage(options, name, GRAAL_OPTION_PREFIX); break; case 'i': option.setValue((int) primitiveValue); break; case 'f': option.setValue((float) longBitsToDouble(primitiveValue)); break; case 'd': option.setValue(longBitsToDouble(primitiveValue)); break; case 's': option.setValue(stringValue); break; } } /** * Parses a given option value specification. * * @param option the specification of an option and its value * @param setter the object to notify of the parsed option and value. If null, the * {@link OptionValue#setValue(Object)} method of the specified option is called * instead. */ public static boolean parseOption(String option, OptionConsumer setter) { return OptionUtils.parseOption(options, option, GRAAL_OPTION_PREFIX, setter); } /** * Sets the relevant system property such that a {@link DebugTimer} or {@link DebugMetric} * associated with a field in a class will be unconditionally enabled when it is created. * <p> * This method verifies that the named field exists and is of an expected type. However, it does * not verify that the timer or metric created has the same name of the field. * * @param c the class in which the field is declared * @param name the name of the field */ private static void unconditionallyEnableTimerOrMetric(Class<?> c, String name) { try { Field field = c.getDeclaredField(name); String propertyName; if (DebugTimer.class.isAssignableFrom(field.getType())) { propertyName = Debug.ENABLE_TIMER_PROPERTY_NAME_PREFIX + name; } else { assert DebugMetric.class.isAssignableFrom(field.getType()); propertyName = Debug.ENABLE_METRIC_PROPERTY_NAME_PREFIX + name; } String previous = System.setProperty(propertyName, "true"); if (previous != null) { System.err.println("Overrode value \"" + previous + "\" of system property \"" + propertyName + "\" with \"true\""); } } catch (Exception e) { throw new GraalInternalError(e); } } }