1 /* 2 * Copyright (c) 2022, 2026, 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/arguments.hpp" 27 #include "runtime/interfaceSupport.inline.hpp" 28 #include "runtime/javaThread.hpp" 29 #include "utilities/ostream.hpp" 30 #include "unittest.hpp" 31 32 using testing::ContainsRegex; 33 using testing::HasSubstr; 34 35 TEST_VM(ClassPrinter, print_classes) { 36 JavaThread* THREAD = JavaThread::current(); 37 ThreadInVMfromNative invm(THREAD); 38 ResourceMark rm; 39 40 stringStream s1; 41 ClassPrinter::print_classes("java/lang/Object", 0x03, &s1); 42 const char* o1 = s1.freeze(); 43 44 ASSERT_THAT(o1, HasSubstr("class: java/lang/Object mirror:")) << "must find java/lang/Object"; 45 ASSERT_THAT(o1, HasSubstr("method wait : (J)V")) << "must find java/lang/Object::wait"; 46 ASSERT_THAT(o1, HasSubstr("method finalize : ()V\n 0 return")) << "must find java/lang/Object::finalize and disasm"; 47 48 // "." should also work as separator in class name 49 stringStream s2; 50 ClassPrinter::print_classes("java.lang.Object", 0x03, &s2); 51 const char* o2 = s2.freeze(); 52 ASSERT_THAT(o2, HasSubstr("class: java/lang/Object mirror:")) << "must find java/lang/Object"; 53 54 // 0x20 is PRINT_CLASS_DETAILS 55 stringStream s3; 56 ClassPrinter::print_classes("java.lang.Integer", 0x20, &s3); 57 const char* o3 = s3.freeze(); 58 ASSERT_THAT(o3, HasSubstr("class: java/lang/Integer mirror:")) << "must find java/lang/Integer"; 59 Klass::KlassKind kind = Arguments::is_valhalla_enabled() 60 ? Klass::InlineKlassKind 61 : Klass::InstanceKlassKind; 62 stringStream headerExpected; 63 headerExpected.print("InstanceKlass (kind=%d): java.lang.Integer {0x", kind); 64 ASSERT_THAT(o3, HasSubstr(headerExpected.freeze())) << "must print InstanceKlass"; 65 ASSERT_THAT(o3, HasSubstr("Java mirror oop for java/lang/Integer:")) << "must print mirror oop"; 66 #if GTEST_USES_POSIX_RE 67 // Complex regex not available on Windows 68 const char* re = Arguments::is_valhalla_enabled() 69 ? "public static final value 'MIN_VALUE' [(]fields 0x00000008[)] 'I'.* -2147483648 [(]0x80000000[)]" 70 : "public static final 'MIN_VALUE' [(]fields 0x00000008[)] 'I'.* -2147483648 [(]0x80000000[)]"; 71 72 ASSERT_THAT(o3, ContainsRegex(re)) << "must print static fields"; 73 #endif 74 } 75 76 TEST_VM(ClassPrinter, print_methods) { 77 JavaThread* THREAD = JavaThread::current(); 78 ThreadInVMfromNative invm(THREAD); 79 ResourceMark rm; 80 81 stringStream s1; 82 ClassPrinter::print_methods("*ang/Object*", "wait", 0x1, &s1); 83 const char* o1 = s1.freeze(); 84 ASSERT_THAT(o1, HasSubstr("class: java/lang/Object mirror:")) << "must find java/lang/Object"; 85 ASSERT_THAT(o1, HasSubstr("method wait : (J)V")) << "must find java/lang/Object::wait(long)"; 86 ASSERT_THAT(o1, HasSubstr("method wait : ()V")) << "must find java/lang/Object::wait()"; 87 ASSERT_THAT(o1, Not(HasSubstr("method finalize : ()V"))) << "must not find java/lang/Object::finalize"; 88 89 stringStream s2; 90 ClassPrinter::print_methods("j*ang/Object*", "wait:(*J*)V", 0x1, &s2); 91 const char* o2 = s2.freeze(); 92 ASSERT_THAT(o2, HasSubstr("class: java/lang/Object mirror:")) << "must find java/lang/Object"; 93 ASSERT_THAT(o2, HasSubstr("method wait : (J)V")) << "must find java/lang/Object::wait(long)"; 94 ASSERT_THAT(o2, HasSubstr("method wait : (JI)V")) << "must find java/lang/Object::wait(long,int)"; 95 ASSERT_THAT(o2, Not(HasSubstr("method wait : ()V"))) << "must not find java/lang/Object::wait()"; 96 97 // 0x02 is PRINT_BYTECODE 98 // 0x04 is PRINT_BYTECODE_ADDRESS 99 // 0x40 is PRINT_METHOD_DETAILS 100 stringStream s3; 101 ClassPrinter::print_methods("java.lang.Object", "wait:()V", 0x46, &s3); 102 const char* o3 = s3.freeze(); 103 ASSERT_THAT(o3, HasSubstr("method wait : ()V")) << "must find java/lang/Object::wait()"; 104 105 #ifndef PRODUCT 106 // PRINT_METHOD_DETAILS -- available only in debug builds 107 ASSERT_THAT(o3, HasSubstr("{method}")) << "must print Method metadata"; 108 #if GTEST_USES_POSIX_RE 109 // Complex regex not available on Windows 110 ASSERT_THAT(o3, ContainsRegex("method holder:.*'java/lang/Object'")) << "must print Method metadata details"; 111 ASSERT_THAT(o3, ContainsRegex("name: *'wait'")) << "must print Method metadata details"; 112 #endif 113 #endif 114 115 #if GTEST_USES_POSIX_RE 116 // Bytecodes: we should have at least one 'return' bytecide for Object.wait() 117 // The print out should look like this: 118 // 0x000000004adf73ad 5 return 119 ASSERT_THAT(o3, ContainsRegex("0x[0-9a-f]+ +[0-9]+ +return")) << "must print return bytecode"; 120 #endif 121 122 } --- EOF ---