1 /*
2 * Copyright (c) 2022, 2025, 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 #include "classfile/classPrinter.hpp"
25 #include "memory/resourceArea.hpp"
26 #include "runtime/interfaceSupport.inline.hpp"
27 #include "runtime/javaThread.hpp"
28 #include "utilities/ostream.hpp"
29 #include "unittest.hpp"
30
31 using testing::ContainsRegex;
32 using testing::HasSubstr;
33
34 TEST_VM(ClassPrinter, print_classes) {
35 JavaThread* THREAD = JavaThread::current();
36 ThreadInVMfromNative invm(THREAD);
37 ResourceMark rm;
38
39 stringStream s1;
40 ClassPrinter::print_classes("java/lang/Object", 0x03, &s1);
41 const char* o1 = s1.freeze();
42
43 ASSERT_THAT(o1, HasSubstr("class: java/lang/Object mirror:")) << "must find java/lang/Object";
44 ASSERT_THAT(o1, HasSubstr("method wait : (J)V")) << "must find java/lang/Object::wait";
45 ASSERT_THAT(o1, HasSubstr("method finalize : ()V\n 0 return")) << "must find java/lang/Object::finalize and disasm";
46
47 // "." should also work as separator in class name
48 stringStream s2;
49 ClassPrinter::print_classes("java.lang.Object", 0x03, &s2);
50 const char* o2 = s2.freeze();
51 ASSERT_THAT(o2, HasSubstr("class: java/lang/Object mirror:")) << "must find java/lang/Object";
52
53 // 0x20 is PRINT_CLASS_DETAILS
54 stringStream s3;
55 ClassPrinter::print_classes("java.lang.Integer", 0x20, &s3);
56 const char* o3 = s3.freeze();
57 ASSERT_THAT(o3, HasSubstr("class: java/lang/Integer mirror:")) << "must find java/lang/Integer";
58 ASSERT_THAT(o3, HasSubstr("InstanceKlass: java.lang.Integer {0x")) << "must print InstanceKlass";
59 ASSERT_THAT(o3, HasSubstr("Java mirror oop for java/lang/Integer:")) << "must print mirror oop";
60 #if GTEST_USES_POSIX_RE
61 // Complex regex not available on Windows
62 ASSERT_THAT(o3, ContainsRegex("public static final 'MIN_VALUE' 'I'.* -2147483648 [(]0x80000000[)]")) << "must print static fields";
63 #endif
64 }
65
66 TEST_VM(ClassPrinter, print_methods) {
67 JavaThread* THREAD = JavaThread::current();
68 ThreadInVMfromNative invm(THREAD);
69 ResourceMark rm;
70
71 stringStream s1;
72 ClassPrinter::print_methods("*ang/Object*", "wait", 0x1, &s1);
73 const char* o1 = s1.freeze();
74 ASSERT_THAT(o1, HasSubstr("class: java/lang/Object mirror:")) << "must find java/lang/Object";
75 ASSERT_THAT(o1, HasSubstr("method wait : (J)V")) << "must find java/lang/Object::wait(long)";
76 ASSERT_THAT(o1, HasSubstr("method wait : ()V")) << "must find java/lang/Object::wait()";
77 ASSERT_THAT(o1, Not(HasSubstr("method finalize : ()V"))) << "must not find java/lang/Object::finalize";
78
79 stringStream s2;
80 ClassPrinter::print_methods("j*ang/Object*", "wait:(*J*)V", 0x1, &s2);
81 const char* o2 = s2.freeze();
82 ASSERT_THAT(o2, HasSubstr("class: java/lang/Object mirror:")) << "must find java/lang/Object";
83 ASSERT_THAT(o2, HasSubstr("method wait : (J)V")) << "must find java/lang/Object::wait(long)";
84 ASSERT_THAT(o2, HasSubstr("method wait : (JI)V")) << "must find java/lang/Object::wait(long,int)";
85 ASSERT_THAT(o2, Not(HasSubstr("method wait : ()V"))) << "must not find java/lang/Object::wait()";
86
87 // 0x02 is PRINT_BYTECODE
88 // 0x04 is PRINT_BYTECODE_ADDRESS
89 // 0x40 is PRINT_METHOD_DETAILS
90 stringStream s3;
91 ClassPrinter::print_methods("java.lang.Object", "wait:()V", 0x46, &s3);
92 const char* o3 = s3.freeze();
93 ASSERT_THAT(o3, HasSubstr("method wait : ()V")) << "must find java/lang/Object::wait()";
94
95 #ifndef PRODUCT
96 // PRINT_METHOD_DETAILS -- available only in debug builds
97 ASSERT_THAT(o3, HasSubstr("{method}")) << "must print Method metadata";
98 #if GTEST_USES_POSIX_RE
99 // Complex regex not available on Windows
100 ASSERT_THAT(o3, ContainsRegex("method holder:.*'java/lang/Object'")) << "must print Method metadata details";
101 ASSERT_THAT(o3, ContainsRegex("name: *'wait'")) << "must print Method metadata details";
102 #endif
103 #endif
104
105 #if GTEST_USES_POSIX_RE
106 // Bytecodes: we should have at least one 'return' bytecide for Object.wait()
107 // The print out should look like this:
108 // 0x000000004adf73ad 5 return
109 ASSERT_THAT(o3, ContainsRegex("0x[0-9a-f]+ +[0-9]+ +return")) << "must print return bytecode";
110 #endif
111
112 }