JcmdStateBuilder.java revision 11833:1cbffa2beba6 
1/*
2 * Copyright (c) 2015, 2016, 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
24package compiler.compilercontrol.share.scenario;
25
26import compiler.compilercontrol.share.method.MethodDescriptor;
27import compiler.compilercontrol.share.method.MethodGenerator;
28import compiler.compilercontrol.share.pool.PoolHelper;
29import jdk.test.lib.util.Pair;
30
31import java.lang.reflect.Executable;
32import java.util.ArrayList;
33import java.util.HashMap;
34import java.util.Iterator;
35import java.util.LinkedHashMap;
36import java.util.List;
37import java.util.Map;
38import java.util.concurrent.Callable;
39import java.util.stream.Collectors;
40
41public class JcmdStateBuilder implements StateBuilder<JcmdCommand> {
42    private static final List<Pair<Executable, Callable<?>>> METHODS
43            = new PoolHelper().getAllMethods();
44    private final Map<Executable, State> stateMap = new HashMap<>();
45    private final DirectiveBuilder directiveBuilder;
46    private final Map<MethodDescriptor, List<CompileCommand>> matchBlocks
47            = new LinkedHashMap<>();
48    private final List<CompileCommand> inlines = new ArrayList<>();
49    private boolean isFileValid = true;
50
51    public JcmdStateBuilder(String fileName) {
52        directiveBuilder = new DirectiveBuilder(fileName);
53    }
54
55    @Override
56    public void add(JcmdCommand compileCommand) {
57        switch (compileCommand.jcmdType) {
58            case ADD:
59                directiveBuilder.add(compileCommand);
60                addCommand(compileCommand);
61                break;
62            case PRINT:
63                // doesn't change the state
64                break;
65            case CLEAR:
66                matchBlocks.clear();
67                inlines.clear();
68                break;
69            case REMOVE:
70                removeDirective();
71                break;
72        }
73    }
74
75    private void addCommand(JcmdCommand compileCommand) {
76        isFileValid &= compileCommand.isValid();
77        MethodDescriptor methodDescriptor = compileCommand.methodDescriptor;
78
79        switch (compileCommand.command) {
80            case INLINE:
81            case DONTINLINE:
82                inlines.add(compileCommand);
83                break;
84        }
85        for (MethodDescriptor md: matchBlocks.keySet()) {
86            if (methodDescriptor.getCanonicalString().matches(md.getRegexp())) {
87                matchBlocks.get(md).add(compileCommand);
88            }
89        }
90        if (!matchBlocks.containsKey(compileCommand.methodDescriptor)) {
91            List<CompileCommand> commands = new ArrayList<>();
92            commands.add(compileCommand);
93            matchBlocks.put(compileCommand.methodDescriptor, commands);
94        }
95    }
96
97    private void removeDirective() {
98        Iterator<MethodDescriptor> iterator = matchBlocks.keySet().iterator();
99        if (iterator.hasNext()) {
100            MethodDescriptor md = iterator.next();
101            matchBlocks.remove(md);
102        }
103    }
104
105    @Override
106    public boolean isValid() {
107        // VM skips invalid directive file added via jcmd command
108        return true;
109    }
110
111    @Override
112    public Map<Executable, State> getStates() {
113        directiveBuilder.getStates();
114        for (MethodDescriptor matchDescriptor : matchBlocks.keySet()) {
115            if ("Inlinee.caller()".matches(matchDescriptor.getRegexp())
116                    && !inlines.isEmpty()) {
117                // Got a *.* match block, where inline would be written
118                inlines.clear();
119            }
120        }
121        /*
122         * Write inline directive in the end to the latest match block
123         * if we didn't do this before
124         * Inlinee caller methods should match this block only
125         */
126        if (!inlines.isEmpty()) {
127            Pair<Executable, Callable<?>> pair = METHODS.get(0);
128            MethodDescriptor md = MethodGenerator.anyMatchDescriptor(
129                    pair.first);
130            CompileCommand cc = new CompileCommand(Command.QUIET, md,
131                    null, Scenario.Type.DIRECTIVE);
132            List<CompileCommand> commands = new ArrayList<>();
133
134            // Add appropriate "*.*" match block
135            commands.add(cc);
136            matchBlocks.put(md, commands);
137        }
138        if (isFileValid) {
139            // Build states for each method according to match blocks
140            for (Pair<Executable, Callable<?>> pair : METHODS) {
141                State state = getState(pair);
142                if (state != null) {
143                    stateMap.put(pair.first, state);
144                }
145            }
146            return stateMap;
147        } else {
148            // return empty map because invalid file doesn't change states
149            return new HashMap<>();
150        }
151    }
152
153    private State getState(Pair<Executable, Callable<?>> pair) {
154        State state = null;
155        MethodDescriptor execDesc = MethodGenerator.commandDescriptor(
156                pair.first);
157        boolean isMatchFound = false;
158
159        if (stateMap.containsKey(pair.first)) {
160            state = stateMap.get(pair.first);
161        }
162        for (MethodDescriptor matchDesc : matchBlocks.keySet()) {
163            if (execDesc.getCanonicalString().matches(matchDesc.getRegexp())) {
164                /*
165                 * if executable matches regex
166                 * then apply commands from this match to the state
167                 */
168                for (CompileCommand cc : matchBlocks.get(matchDesc)) {
169                    if (state == null) {
170                        state = new State();
171                    }
172                    if (!isMatchFound) {
173                        // this is a first found match, apply all commands
174                        state.apply(cc);
175                    } else {
176                        // apply only inline directives
177                        switch (cc.command) {
178                            case INLINE:
179                            case DONTINLINE:
180                                state.apply(cc);
181                                break;
182                        }
183                    }
184                }
185                isMatchFound = true;
186            }
187        }
188        return state;
189    }
190
191    @Override
192    public List<String> getOptions() {
193        return new ArrayList<>();
194    }
195
196    @Override
197    public List<JcmdCommand> getCompileCommands() {
198        if (isFileValid) {
199            return matchBlocks.keySet().stream()
200                    /* only method descriptor is required
201                       to check print_directives */
202                    .map(md -> new JcmdCommand(null, md, null, null,
203                            Scenario.JcmdType.ADD))
204                    .collect(Collectors.toList());
205        } else {
206            return new ArrayList<>();
207        }
208    }
209}
210