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 }
--- EOF ---