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comparison graal/com.oracle.jvmci.hotspot/src/com/oracle/jvmci/hotspot/HotSpotOptions.java @ 21551:5324104ac4f3

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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
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21550:f48a6cea31eb 21551:5324104ac4f3
1 /*
2 * Copyright (c) 2011, 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.hotspot.HotSpotOptionsLoader.*;
26 import static java.lang.Double.*;
27
28 import com.oracle.graal.debug.*;
29 import com.oracle.graal.options.*;
30 import com.oracle.graal.options.OptionUtils.OptionConsumer;
31 import com.oracle.jvmci.runtime.*;
32
33 //JaCoCo Exclude
34
35 /**
36 * Sets Graal options from the HotSpot command line. Such options are distinguished by the
37 * {@link #GRAAL_OPTION_PREFIX} prefix.
38 */
39 public class HotSpotOptions {
40
41 private static final String GRAAL_OPTION_PREFIX = "-G:";
42
43 /**
44 * Parses the JVMCI specific options specified to HotSpot (e.g., on the command line).
45 *
46 * @param optionsParsedClass the {@link Class} for {@link OptionsParsed}
47 * @return the implementations of {@link OptionsParsed} available
48 */
49 private static native OptionsParsed[] parseVMOptions(Class<?> optionsParsedClass);
50
51 static {
52 // Debug should not be initialized until all options that may affect
53 // its initialization have been processed.
54 assert !Debug.Initialization.isDebugInitialized() : "The class " + Debug.class.getName() + " must not be initialized before the JVMCI runtime has been initialized. " +
55 "This can be fixed by placing a call to " + JVMCI.class.getName() + ".getRuntime() on the path that triggers initialization of " + Debug.class.getName();
56
57 for (OptionsParsed handler : parseVMOptions(OptionsParsed.class)) {
58 handler.apply();
59 }
60 }
61
62 /**
63 * Ensures {@link HotSpotOptions} is initialized.
64 */
65 public static void initialize() {
66 }
67
68 /**
69 * Helper for the VM code called by {@link #parseVMOptions}.
70 *
71 * @param name the name of a parsed option
72 * @param option the object encapsulating the option
73 * @param spec specification of boolean option value, type of option value or action to take
74 */
75 static void setOption(String name, OptionValue<?> option, char spec, String stringValue, long primitiveValue) {
76 switch (spec) {
77 case '+':
78 option.setValue(Boolean.TRUE);
79 break;
80 case '-':
81 option.setValue(Boolean.FALSE);
82 break;
83 case '?':
84 OptionUtils.printFlags(options, GRAAL_OPTION_PREFIX);
85 break;
86 case ' ':
87 OptionUtils.printNoMatchMessage(options, name, GRAAL_OPTION_PREFIX);
88 break;
89 case 'i':
90 option.setValue((int) primitiveValue);
91 break;
92 case 'f':
93 option.setValue((float) longBitsToDouble(primitiveValue));
94 break;
95 case 'd':
96 option.setValue(longBitsToDouble(primitiveValue));
97 break;
98 case 's':
99 option.setValue(stringValue);
100 break;
101 }
102 }
103
104 /**
105 * Parses a given option value specification.
106 *
107 * @param option the specification of an option and its value
108 * @param setter the object to notify of the parsed option and value. If null, the
109 * {@link OptionValue#setValue(Object)} method of the specified option is called
110 * instead.
111 */
112 public static boolean parseOption(String option, OptionConsumer setter) {
113 return OptionUtils.parseOption(options, option, GRAAL_OPTION_PREFIX, setter);
114 }
115 }