T7093325.java revision 1519:5c956be64b9e 
1/*
2 * Copyright (c) 2011, 2013, 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
24/*
25 * @test
26 * @bug 7093325 8006694
27 * @summary Redundant entry in bytecode exception table
28 *  temporarily workaround combo tests are causing time out in several platforms
29 * @library lib
30 * @build JavacTestingAbstractThreadedTest
31 * @run main/othervm T7093325
32 */
33
34// use /othervm to avoid jtreg timeout issues (CODETOOLS-7900047)
35// see JDK-8006746
36
37import java.io.File;
38import java.net.URI;
39import java.util.Arrays;
40import javax.tools.JavaCompiler;
41import javax.tools.JavaFileObject;
42import javax.tools.SimpleJavaFileObject;
43import javax.tools.ToolProvider;
44
45import com.sun.source.util.JavacTask;
46import com.sun.tools.classfile.Attribute;
47import com.sun.tools.classfile.ClassFile;
48import com.sun.tools.classfile.Code_attribute;
49import com.sun.tools.classfile.ConstantPool.*;
50import com.sun.tools.classfile.Method;
51
52public class T7093325
53    extends JavacTestingAbstractThreadedTest
54    implements Runnable {
55
56    enum StatementKind {
57        THROW("throw new RuntimeException();", false, false),
58        RETURN_NONEMPTY("System.out.println(); return;", true, false),
59        RETURN_EMPTY("return;", true, true),
60        APPLY("System.out.println();", true, false);
61
62        String stmt;
63        boolean canInline;
64        boolean empty;
65
66        private StatementKind(String stmt, boolean canInline, boolean empty) {
67            this.stmt = stmt;
68            this.canInline = canInline;
69            this.empty = empty;
70        }
71    }
72
73    enum CatchArity {
74        NONE(""),
75        ONE("catch (A a) { #S1 }"),
76        TWO("catch (B b) { #S2 }"),
77        THREE("catch (C c) { #S3 }"),
78        FOUR("catch (D d) { #S4 }");
79
80        String catchStr;
81
82        private CatchArity(String catchStr) {
83            this.catchStr = catchStr;
84        }
85
86        String catchers() {
87            if (this.ordinal() == 0) {
88                return catchStr;
89            } else {
90                return CatchArity.values()[this.ordinal() - 1].catchers() +
91                        catchStr;
92            }
93        }
94    }
95
96    public static void main(String... args) throws Exception {
97        for (CatchArity ca : CatchArity.values()) {
98            for (StatementKind stmt0 : StatementKind.values()) {
99                if (ca.ordinal() == 0) {
100                    pool.execute(new T7093325(ca, stmt0));
101                    continue;
102                }
103                for (StatementKind stmt1 : StatementKind.values()) {
104                    if (ca.ordinal() == 1) {
105                        pool.execute(new T7093325(ca, stmt0, stmt1));
106                        continue;
107                    }
108                    for (StatementKind stmt2 : StatementKind.values()) {
109                        if (ca.ordinal() == 2) {
110                            pool.execute(new T7093325(ca, stmt0, stmt1, stmt2));
111                            continue;
112                        }
113                        for (StatementKind stmt3 : StatementKind.values()) {
114                            if (ca.ordinal() == 3) {
115                                pool.execute(
116                                    new T7093325(ca, stmt0, stmt1, stmt2, stmt3));
117                                continue;
118                            }
119                            for (StatementKind stmt4 : StatementKind.values()) {
120                                if (ca.ordinal() == 4) {
121                                    pool.execute(
122                                        new T7093325(ca, stmt0, stmt1,
123                                                     stmt2, stmt3, stmt4));
124                                    continue;
125                                }
126                                for (StatementKind stmt5 : StatementKind.values()) {
127                                    pool.execute(
128                                        new T7093325(ca, stmt0, stmt1, stmt2,
129                                                     stmt3, stmt4, stmt5));
130                                }
131                            }
132                        }
133                    }
134                }
135            }
136        }
137
138        checkAfterExec();
139    }
140
141    /** instance decls **/
142
143    CatchArity ca;
144    StatementKind[] stmts;
145
146    public T7093325(CatchArity ca, StatementKind... stmts) {
147        this.ca = ca;
148        this.stmts = stmts;
149    }
150
151    @Override
152    public void run() {
153        int id = checkCount.incrementAndGet();
154        final JavaCompiler tool = ToolProvider.getSystemJavaCompiler();
155        JavaSource source = new JavaSource(id);
156        JavacTask ct = (JavacTask)tool.getTask(null, fm.get(), null,
157                null, null, Arrays.asList(source));
158        ct.call();
159        verifyBytecode(source, id);
160    }
161
162    void verifyBytecode(JavaSource source, int id) {
163        boolean lastInlined = false;
164        boolean hasCode = false;
165        int gapsCount = 0;
166        for (int i = 0; i < stmts.length ; i++) {
167            lastInlined = stmts[i].canInline;
168            hasCode = hasCode || !stmts[i].empty;
169            if (lastInlined && hasCode) {
170                hasCode = false;
171                gapsCount++;
172            }
173        }
174        if (!lastInlined) {
175            gapsCount++;
176        }
177
178        File compiledTest = new File(String.format("Test%s.class", id));
179        try {
180            ClassFile cf = ClassFile.read(compiledTest);
181            if (cf == null) {
182                throw new Error("Classfile not found: " +
183                                compiledTest.getName());
184            }
185
186            Method test_method = null;
187            for (Method m : cf.methods) {
188                if (m.getName(cf.constant_pool).equals("test")) {
189                    test_method = m;
190                    break;
191                }
192            }
193
194            if (test_method == null) {
195                throw new Error("Method test() not found in class Test");
196            }
197
198            Code_attribute code = null;
199            for (Attribute a : test_method.attributes) {
200                if (a.getName(cf.constant_pool).equals(Attribute.Code)) {
201                    code = (Code_attribute)a;
202                    break;
203                }
204            }
205
206            if (code == null) {
207                throw new Error("Code attribute not found in method test()");
208            }
209
210            int actualGapsCount = 0;
211            for (int i = 0; i < code.exception_table_langth ; i++) {
212                int catchType = code.exception_table[i].catch_type;
213                if (catchType == 0) { //any
214                    actualGapsCount++;
215                }
216            }
217
218            if (actualGapsCount != gapsCount) {
219                throw new Error("Bad exception table for test()\n" +
220                            "expected gaps: " + gapsCount + "\n" +
221                            "found gaps: " + actualGapsCount + "\n" +
222                            source);
223            }
224        } catch (Exception e) {
225            e.printStackTrace();
226            throw new Error("error reading " + compiledTest +": " + e);
227        }
228
229    }
230
231    class JavaSource extends SimpleJavaFileObject {
232
233        static final String source_template =
234                "class A extends RuntimeException {} \n" +
235                "class B extends RuntimeException {} \n" +
236                "class C extends RuntimeException {} \n" +
237                "class D extends RuntimeException {} \n" +
238                "class E extends RuntimeException {} \n" +
239                "class Test#ID {\n" +
240                "   void test() {\n" +
241                "   try { #S0 } #C finally { System.out.println(); }\n" +
242                "   }\n" +
243                "}";
244
245        String source;
246
247        public JavaSource(int id) {
248            super(URI.create(String.format("myfo:/Test%s.java", id)),
249                  JavaFileObject.Kind.SOURCE);
250            source = source_template.replace("#C", ca.catchers());
251            source = source.replace("#S0", stmts[0].stmt);
252            source = source.replace("#ID", String.valueOf(id));
253            for (int i = 1; i < ca.ordinal() + 1; i++) {
254                source = source.replace("#S" + i, stmts[i].stmt);
255            }
256        }
257
258        @Override
259        public String toString() {
260            return source;
261        }
262
263        @Override
264        public CharSequence getCharContent(boolean ignoreEncodingErrors) {
265            return source;
266        }
267    }
268
269}
270