# HG changeset patch # User cjplummer # Date 1423696963 28800 # Node ID 73f45d04ad7a0c5777eace2a5f6ac99d0bebacc3 # Parent 938c1c97ad3b2b868875e5c74faecec04c5e7b36 8054888: Runtime: Add Diagnostic Command that prints the class hierarchy Summary: Added the VM.class_hierarhcy DCMD Reviewed-by: stefank, miauno diff -r 938c1c97ad3b -r 73f45d04ad7a hotspot/src/share/vm/memory/heapInspection.cpp --- a/hotspot/src/share/vm/memory/heapInspection.cpp Fri Feb 13 13:17:13 2015 +0100 +++ b/hotspot/src/share/vm/memory/heapInspection.cpp Wed Feb 11 15:22:43 2015 -0800 @@ -1,5 +1,5 @@ /* - * Copyright (c) 2002, 2014, Oracle and/or its affiliates. All rights reserved. + * Copyright (c) 2002, 2015, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it @@ -24,6 +24,7 @@ #include "precompiled.hpp" #include "classfile/classLoaderData.hpp" +#include "classfile/systemDictionary.hpp" #include "gc_interface/collectedHeap.hpp" #include "memory/genCollectedHeap.hpp" #include "memory/heapInspection.hpp" @@ -39,6 +40,19 @@ // HeapInspection +inline KlassInfoEntry::~KlassInfoEntry() { + if (_subclasses != NULL) { + delete _subclasses; + } +} + +inline void KlassInfoEntry::add_subclass(KlassInfoEntry* cie) { + if (_subclasses == NULL) { + _subclasses = new (ResourceObj::C_HEAP, mtInternal) GrowableArray(4, true); + } + _subclasses->append(cie); +} + int KlassInfoEntry::compare(KlassInfoEntry* e1, KlassInfoEntry* e2) { if(e1->_instance_words > e2->_instance_words) { return -1; @@ -129,7 +143,7 @@ _table->lookup(k); } -KlassInfoTable::KlassInfoTable(bool need_class_stats) { +KlassInfoTable::KlassInfoTable(bool add_all_classes) { _size_of_instances_in_words = 0; _size = 0; _ref = (HeapWord*) Universe::boolArrayKlassObj(); @@ -141,7 +155,7 @@ for (int index = 0; index < _size; index++) { _buckets[index].initialize(); } - if (need_class_stats) { + if (add_all_classes) { AllClassesFinder finder(this); ClassLoaderDataGraph::classes_do(&finder); } @@ -299,6 +313,191 @@ st->cr(); } +class HierarchyClosure : public KlassInfoClosure { +private: + GrowableArray *_elements; +public: + HierarchyClosure(GrowableArray *_elements) : _elements(_elements) {} + + void do_cinfo(KlassInfoEntry* cie) { + // ignore array classes + if (cie->klass()->oop_is_instance()) { + _elements->append(cie); + } + } +}; + +void KlassHierarchy::print_class_hierarchy(outputStream* st, bool print_interfaces, + bool print_subclasses, char* classname) { + ResourceMark rm; + Stack class_stack; + GrowableArray elements; + + // Add all classes to the KlassInfoTable, which allows for quick lookup. + // A KlassInfoEntry will be created for each class. + KlassInfoTable cit(true); + if (cit.allocation_failed()) { + st->print_cr("ERROR: Ran out of C-heap; hierarchy not generated"); + return; + } + + // Add all created KlassInfoEntry instances to the elements array for easy + // iteration, and to allow each KlassInfoEntry instance to have a unique index. + HierarchyClosure hc(&elements); + cit.iterate(&hc); + + for(int i = 0; i < elements.length(); i++) { + KlassInfoEntry* cie = elements.at(i); + const InstanceKlass* k = (InstanceKlass*)cie->klass(); + Klass* super = ((InstanceKlass*)k)->java_super(); + + // Set the index for the class. + cie->set_index(i + 1); + + // Add the class to the subclass array of its superclass. + if (super != NULL) { + KlassInfoEntry* super_cie = cit.lookup(super); + assert(super_cie != NULL, "could not lookup superclass"); + super_cie->add_subclass(cie); + } + } + + // Set the do_print flag for each class that should be printed. + for(int i = 0; i < elements.length(); i++) { + KlassInfoEntry* cie = elements.at(i); + if (classname == NULL) { + // We are printing all classes. + cie->set_do_print(true); + } else { + // We are only printing the hierarchy of a specific class. + if (strcmp(classname, cie->klass()->external_name()) == 0) { + KlassHierarchy::set_do_print_for_class_hierarchy(cie, &cit, print_subclasses); + } + } + } + + // Now we do a depth first traversal of the class hierachry. The class_stack will + // maintain the list of classes we still need to process. Start things off + // by priming it with java.lang.Object. + KlassInfoEntry* jlo_cie = cit.lookup(SystemDictionary::Object_klass()); + assert(jlo_cie != NULL, "could not lookup java.lang.Object"); + class_stack.push(jlo_cie); + + // Repeatedly pop the top item off the stack, print its class info, + // and push all of its subclasses on to the stack. Do this until there + // are no classes left on the stack. + while (!class_stack.is_empty()) { + KlassInfoEntry* curr_cie = class_stack.pop(); + if (curr_cie->do_print()) { + print_class(st, curr_cie, print_interfaces); + if (curr_cie->subclasses() != NULL) { + // Current class has subclasses, so push all of them onto the stack. + for (int i = 0; i < curr_cie->subclasses()->length(); i++) { + KlassInfoEntry* cie = curr_cie->subclasses()->at(i); + if (cie->do_print()) { + class_stack.push(cie); + } + } + } + } + } + + st->flush(); +} + +// Sets the do_print flag for every superclass and subclass of the specified class. +void KlassHierarchy::set_do_print_for_class_hierarchy(KlassInfoEntry* cie, KlassInfoTable* cit, + bool print_subclasses) { + // Set do_print for all superclasses of this class. + Klass* super = ((InstanceKlass*)cie->klass())->java_super(); + while (super != NULL) { + KlassInfoEntry* super_cie = cit->lookup(super); + super_cie->set_do_print(true); + super = super->super(); + } + + // Set do_print for this class and all of its subclasses. + Stack class_stack; + class_stack.push(cie); + while (!class_stack.is_empty()) { + KlassInfoEntry* curr_cie = class_stack.pop(); + curr_cie->set_do_print(true); + if (print_subclasses && curr_cie->subclasses() != NULL) { + // Current class has subclasses, so push all of them onto the stack. + for (int i = 0; i < curr_cie->subclasses()->length(); i++) { + KlassInfoEntry* cie = curr_cie->subclasses()->at(i); + class_stack.push(cie); + } + } + } +} + +static void print_indent(outputStream* st, int indent) { + while (indent != 0) { + st->print("|"); + indent--; + if (indent != 0) { + st->print(" "); + } + } +} + +// Print the class name and its unique ClassLoader identifer. +static void print_classname(outputStream* st, Klass* klass) { + oop loader_oop = klass->class_loader_data()->class_loader(); + st->print("%s/", klass->external_name()); + if (loader_oop == NULL) { + st->print("null"); + } else { + st->print(INTPTR_FORMAT, klass->class_loader_data()); + } +} + +static void print_interface(outputStream* st, Klass* intf_klass, const char* intf_type, int indent) { + print_indent(st, indent); + st->print(" implements "); + print_classname(st, intf_klass); + st->print(" (%s intf)\n", intf_type); +} + +void KlassHierarchy::print_class(outputStream* st, KlassInfoEntry* cie, bool print_interfaces) { + ResourceMark rm; + InstanceKlass* klass = (InstanceKlass*)cie->klass(); + int indent = 0; + + // Print indentation with proper indicators of superclass. + Klass* super = klass->super(); + while (super != NULL) { + super = super->super(); + indent++; + } + print_indent(st, indent); + if (indent != 0) st->print("--"); + + // Print the class name, its unique ClassLoader identifer, and if it is an interface. + print_classname(st, klass); + if (klass->is_interface()) { + st->print(" (intf)"); + } + st->print("\n"); + + // Print any interfaces the class has. + if (print_interfaces) { + Array* local_intfs = klass->local_interfaces(); + Array* trans_intfs = klass->transitive_interfaces(); + for (int i = 0; i < local_intfs->length(); i++) { + print_interface(st, local_intfs->at(i), "declared", indent); + } + for (int i = 0; i < trans_intfs->length(); i++) { + Klass* trans_interface = trans_intfs->at(i); + // Only print transitive interfaces if they are not also declared. + if (!local_intfs->contains(trans_interface)) { + print_interface(st, trans_interface, "inherited", indent); + } + } + } +} + void KlassInfoHisto::print_class_stats(outputStream* st, bool csv_format, const char *columns) { ResourceMark rm; @@ -320,6 +519,8 @@ elements()->at(i)->set_index(i+1); } + // First iteration is for accumulating stats totals in colsum_table[]. + // Second iteration is for printing stats for each class. for (int pass=1; pass<=2; pass++) { if (pass == 2) { print_title(st, csv_format, selected, width_table, name_table); @@ -328,6 +529,7 @@ KlassInfoEntry* e = (KlassInfoEntry*)elements()->at(i); const Klass* k = e->klass(); + // Get the stats for this class. memset(&sz, 0, sizeof(sz)); sz._inst_count = e->count(); sz._inst_bytes = HeapWordSize * e->words(); @@ -335,11 +537,13 @@ sz._total_bytes = sz._ro_bytes + sz._rw_bytes; if (pass == 1) { + // Add the stats for this class to the overall totals. for (int c=0; coop_is_instance()) { Klass* super = ((InstanceKlass*)k)->java_super(); if (super) { @@ -373,6 +577,8 @@ } if (pass == 1) { + // Calculate the minimum width needed for the column by accounting for the + // column header width and the width of the largest value in the column. for (int c=0; cprint(","); for (int c=0; cprint_cr("WARNING: Ran out of C-heap; undercounted " SIZE_FORMAT @@ -533,7 +741,7 @@ histo.sort(); histo.print_histo_on(st, _print_class_stats, _csv_format, _columns); } else { - st->print_cr("WARNING: Ran out of C-heap; histogram not generated"); + st->print_cr("ERROR: Ran out of C-heap; histogram not generated"); } st->flush(); } diff -r 938c1c97ad3b -r 73f45d04ad7a hotspot/src/share/vm/memory/heapInspection.hpp --- a/hotspot/src/share/vm/memory/heapInspection.hpp Fri Feb 13 13:17:13 2015 +0100 +++ b/hotspot/src/share/vm/memory/heapInspection.hpp Wed Feb 11 15:22:43 2015 -0800 @@ -1,5 +1,5 @@ /* - * Copyright (c) 2002, 2014, Oracle and/or its affiliates. All rights reserved. + * Copyright (c) 2002, 2015, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it @@ -188,11 +188,15 @@ long _instance_count; size_t _instance_words; long _index; + bool _do_print; // True if we should print this class when printing the class hierarchy. + GrowableArray* _subclasses; public: KlassInfoEntry(Klass* k, KlassInfoEntry* next) : - _klass(k), _instance_count(0), _instance_words(0), _next(next), _index(-1) + _klass(k), _instance_count(0), _instance_words(0), _next(next), _index(-1), + _do_print(false), _subclasses(NULL) {} + ~KlassInfoEntry(); KlassInfoEntry* next() const { return _next; } bool is_equal(const Klass* k) { return k == _klass; } Klass* klass() const { return _klass; } @@ -202,6 +206,10 @@ void set_words(size_t wds) { _instance_words = wds; } void set_index(long index) { _index = index; } long index() const { return _index; } + GrowableArray* subclasses() const { return _subclasses; } + void add_subclass(KlassInfoEntry* cie); + void set_do_print(bool do_print) { _do_print = do_print; } + bool do_print() const { return _do_print; } int compare(KlassInfoEntry* e1, KlassInfoEntry* e2); void print_on(outputStream* st) const; const char* name() const; @@ -248,7 +256,7 @@ }; public: - KlassInfoTable(bool need_class_stats); + KlassInfoTable(bool add_all_classes); ~KlassInfoTable(); bool record_instance(const oop obj); void iterate(KlassInfoClosure* cic); @@ -256,6 +264,18 @@ size_t size_of_instances_in_words() const; friend class KlassInfoHisto; + friend class KlassHierarchy; +}; + +class KlassHierarchy : AllStatic { + public: + static void print_class_hierarchy(outputStream* st, bool print_interfaces, bool print_subclasses, + char* classname); + + private: + static void set_do_print_for_class_hierarchy(KlassInfoEntry* cie, KlassInfoTable* cit, + bool print_subclasse); + static void print_class(outputStream* st, KlassInfoEntry* cie, bool print_subclasses); }; class KlassInfoHisto : public StackObj { diff -r 938c1c97ad3b -r 73f45d04ad7a hotspot/src/share/vm/runtime/vm_operations.cpp --- a/hotspot/src/share/vm/runtime/vm_operations.cpp Fri Feb 13 13:17:13 2015 +0100 +++ b/hotspot/src/share/vm/runtime/vm_operations.cpp Wed Feb 11 15:22:43 2015 -0800 @@ -1,5 +1,5 @@ /* - * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved. + * Copyright (c) 1997, 2015, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it @@ -29,6 +29,7 @@ #include "compiler/compileBroker.hpp" #include "compiler/compilerOracle.hpp" #include "gc_implementation/shared/isGCActiveMark.hpp" +#include "memory/heapInspection.hpp" #include "memory/resourceArea.hpp" #include "oops/symbol.hpp" #include "runtime/arguments.hpp" @@ -486,3 +487,9 @@ void VM_PrintCodeCache::doit() { CodeCache::print_layout(_out); } + +#if INCLUDE_SERVICES +void VM_PrintClassHierarchy::doit() { + KlassHierarchy::print_class_hierarchy(_out, _print_interfaces, _print_subclasses, _classname); +} +#endif diff -r 938c1c97ad3b -r 73f45d04ad7a hotspot/src/share/vm/runtime/vm_operations.hpp --- a/hotspot/src/share/vm/runtime/vm_operations.hpp Fri Feb 13 13:17:13 2015 +0100 +++ b/hotspot/src/share/vm/runtime/vm_operations.hpp Wed Feb 11 15:22:43 2015 -0800 @@ -1,5 +1,5 @@ /* - * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved. + * Copyright (c) 1997, 2015, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it @@ -105,6 +105,7 @@ template(PrintCompileQueue) \ template(PrintCodeList) \ template(PrintCodeCache) \ + template(PrintClassHierarchy) \ class VM_Operation: public CHeapObj { public: @@ -457,5 +458,21 @@ void doit(); }; +#if INCLUDE_SERVICES +class VM_PrintClassHierarchy: public VM_Operation { + private: + outputStream* _out; + bool _print_interfaces; + bool _print_subclasses; + char* _classname; + + public: + VM_PrintClassHierarchy(outputStream* st, bool print_interfaces, bool print_subclasses, char* classname) : + _out(st), _print_interfaces(print_interfaces), _print_subclasses(print_subclasses), + _classname(classname) {} + VMOp_Type type() const { return VMOp_PrintClassHierarchy; } + void doit(); +}; +#endif // INCLUDE_SERVICES #endif // SHARE_VM_RUNTIME_VM_OPERATIONS_HPP diff -r 938c1c97ad3b -r 73f45d04ad7a hotspot/src/share/vm/services/diagnosticCommand.cpp --- a/hotspot/src/share/vm/services/diagnosticCommand.cpp Fri Feb 13 13:17:13 2015 +0100 +++ b/hotspot/src/share/vm/services/diagnosticCommand.cpp Wed Feb 11 15:22:43 2015 -0800 @@ -1,5 +1,5 @@ /* - * Copyright (c) 2011, 2014, Oracle and/or its affiliates. All rights reserved. + * Copyright (c) 2011, 2015, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it @@ -57,6 +57,7 @@ DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl(DCmd_Source_Internal | DCmd_Source_AttachAPI, true, false)); DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl(full_export, true, false)); DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl(full_export, true, false)); + DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl(full_export, true, false)); DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl(full_export, true, false)); DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl(full_export, true, false)); #endif // INCLUDE_SERVICES @@ -695,3 +696,35 @@ VMThread::execute(&printCodeCacheOp); } +#if INCLUDE_SERVICES +ClassHierarchyDCmd::ClassHierarchyDCmd(outputStream* output, bool heap) : + DCmdWithParser(output, heap), + _print_interfaces("-i", "Inherited interfaces should be printed.", "BOOLEAN", false, "false"), + _print_subclasses("-s", "If a classname is specified, print its subclasses. " + "Otherwise only its superclasses are printed.", "BOOLEAN", false, "false"), + _classname("classname", "Name of class whose hierarchy should be printed. " + "If not specified, all class hierarchies are printed.", + "STRING", false) { + _dcmdparser.add_dcmd_option(&_print_interfaces); + _dcmdparser.add_dcmd_option(&_print_subclasses); + _dcmdparser.add_dcmd_argument(&_classname); +} + +void ClassHierarchyDCmd::execute(DCmdSource source, TRAPS) { + VM_PrintClassHierarchy printClassHierarchyOp(output(), _print_interfaces.value(), + _print_subclasses.value(), _classname.value()); + VMThread::execute(&printClassHierarchyOp); +} + +int ClassHierarchyDCmd::num_arguments() { + ResourceMark rm; + ClassHierarchyDCmd* dcmd = new ClassHierarchyDCmd(NULL, false); + if (dcmd != NULL) { + DCmdMark mark(dcmd); + return dcmd->_dcmdparser.num_arguments(); + } else { + return 0; + } +} + +#endif diff -r 938c1c97ad3b -r 73f45d04ad7a hotspot/src/share/vm/services/diagnosticCommand.hpp --- a/hotspot/src/share/vm/services/diagnosticCommand.hpp Fri Feb 13 13:17:13 2015 +0100 +++ b/hotspot/src/share/vm/services/diagnosticCommand.hpp Wed Feb 11 15:22:43 2015 -0800 @@ -1,5 +1,5 @@ /* - * Copyright (c) 2011, 2014, Oracle and/or its affiliates. All rights reserved. + * Copyright (c) 2011, 2015, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it @@ -271,6 +271,34 @@ virtual void execute(DCmdSource source, TRAPS); }; + +class ClassHierarchyDCmd : public DCmdWithParser { +protected: + DCmdArgument _print_interfaces; // true if inherited interfaces should be printed. + DCmdArgument _print_subclasses; // true if subclasses of the specified classname should be printed. + DCmdArgument _classname; // Optional single class name whose hierarchy should be printed. +public: + ClassHierarchyDCmd(outputStream* output, bool heap); + static const char* name() { + return "VM.class_hierarchy"; + } + static const char* description() { + return "Print a list of all loaded classes, indented to show the class hiearchy. " + "The name of each class is followed by the ClassLoaderData* of its ClassLoader, " + "or \"null\" if loaded by the bootstrap class loader."; + } + static const char* impact() { + return "Medium: Depends on number of loaded classes."; + } + static const JavaPermission permission() { + JavaPermission p = {"java.lang.management.ManagementPermission", + "monitor", NULL}; + return p; + } + static int num_arguments(); + virtual void execute(DCmdSource source, TRAPS); +}; + // See also: thread_dump in attachListener.cpp class ThreadDumpDCmd : public DCmdWithParser { protected: diff -r 938c1c97ad3b -r 73f45d04ad7a hotspot/test/Makefile --- a/hotspot/test/Makefile Fri Feb 13 13:17:13 2015 +0100 +++ b/hotspot/test/Makefile Wed Feb 11 15:22:43 2015 -0800 @@ -271,7 +271,7 @@ # Report details on all failed or error tests, times too JTREG_BASIC_OPTIONS += -v:fail,error,time # Retain all files for failing tests -JTREG_BASIC_OPTIONS += -retain:fail,error +JTREG_BASIC_OPTIONS += -retain:all # Ignore tests are not run and completely silent about it JTREG_IGNORE_OPTION = -ignore:quiet JTREG_BASIC_OPTIONS += $(JTREG_IGNORE_OPTION) diff -r 938c1c97ad3b -r 73f45d04ad7a hotspot/test/serviceability/dcmd/vm/ClassHierarchyTest.java --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/hotspot/test/serviceability/dcmd/vm/ClassHierarchyTest.java Wed Feb 11 15:22:43 2015 -0800 @@ -0,0 +1,199 @@ +/* + * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA + * or visit www.oracle.com if you need additional information or have any + * questions. + */ + +/* + * @test + * @summary Test of diagnostic command VM.class_hierarchy + * @library /testlibrary + * @build com.oracle.java.testlibrary.* + * @build com.oracle.java.testlibrary.dcmd.* + * @run testng ClassHierarchyTest + */ + +import org.testng.annotations.Test; +import org.testng.Assert; + +import com.oracle.java.testlibrary.OutputAnalyzer; +import com.oracle.java.testlibrary.dcmd.CommandExecutor; +import com.oracle.java.testlibrary.dcmd.JMXExecutor; + +import java.io.File; +import java.io.FileInputStream; +import java.io.IOException; +import java.nio.ByteBuffer; +import java.nio.channels.FileChannel; +import java.util.Iterator; +import java.util.regex.Matcher; +import java.util.regex.Pattern; + +public class ClassHierarchyTest { + + // $> jcmd DcmdTestClass VM.class_hierarchy DcmdTestClass | grep DcmdTestClass\$\$Lambda + // |--DcmdTestClass$$Lambda$1/4081552/0xa529fbb0 + + // > VM.class_hierarchy DcmdBaseClass + // java.lang.Object/null + // |--DcmdBaseClass/0xa4abcd48 + + // > VM.class_hierarchy DcmdBaseClass -s + // java.lang.Object/null + // |--DcmdBaseClass/0xa4abcd48 + // | |--DcmdTestClass/0xa4abcd48 + + // > VM.class_hierarchy DcmdBaseClass -i -s + // java.lang.Object/null + // |--DcmdBaseClass/0xa4abcd48 + // | implements Intf2/0xa4abcd48 (declared intf) + // | implements Intf1/0xa4abcd48 (inherited intf) + // | |--DcmdTestClass/0xa4abcd48 + // | | implements Intf1/0xa4abcd48 (inherited intf) + // | | implements Intf2/0xa4abcd48 (inherited intf) + + static Pattern expected_lambda_line = + Pattern.compile("\\|--DcmdTestClass\\$\\$Lambda.*"); + + static Pattern expected_lines[] = { + Pattern.compile("java.lang.Object/null"), + Pattern.compile("\\|--DcmdBaseClass/0x(\\p{XDigit}*)"), + Pattern.compile("\\| implements Intf2/0x(\\p{XDigit}*) \\(declared intf\\)"), + Pattern.compile("\\| implements Intf1/0x(\\p{XDigit}*) \\(inherited intf\\)"), + Pattern.compile("\\| \\|--DcmdTestClass/0x(\\p{XDigit}*)"), + Pattern.compile("\\| \\| implements Intf1/0x(\\p{XDigit}*) \\(inherited intf\\)"), + Pattern.compile("\\| \\| implements Intf2/0x(\\p{XDigit}*) \\(inherited intf\\)") + }; + + public void run(CommandExecutor executor) throws ClassNotFoundException { + OutputAnalyzer output; + Iterator lines; + int i; + + // Load our test class whose hierarchy we will print. + Class c = Class.forName("DcmdTestClass"); + + // Verify the presence of the lamba anonymous class + output = executor.execute("VM.class_hierarchy"); + lines = output.asLines().iterator(); + Boolean foundMatch = false; + while (lines.hasNext()) { + String line = lines.next(); + Matcher m = expected_lambda_line.matcher(line); + if (m.matches()) { + foundMatch = true; + break; + } + } + if (!foundMatch) { + Assert.fail("Failed to find lamda class"); + } + + // Verify the output for the simple hierachry of just DcmdBaseClass. + output = executor.execute("VM.class_hierarchy DcmdBaseClass"); + lines = output.asLines().iterator(); + i = 0; + while (lines.hasNext()) { + String line = lines.next(); + Matcher m = expected_lines[i].matcher(line); + i++; + if (!m.matches()) { + Assert.fail("Failed to match line #" + i + ": " + line); + } + // Should only be two lines of output in this form. + if (i == 2) break; + } + if (lines.hasNext()) { + String line = lines.next(); + Assert.fail("Unexpected dcmd output: " + line); + } + + // Verify the output for the full hierarchy of DcmdBaseClass, but without interfaces. + output = executor.execute("VM.class_hierarchy DcmdBaseClass -s"); + lines = output.asLines().iterator(); + i = 0; + while (lines.hasNext()) { + String line = lines.next(); + Matcher m = expected_lines[i].matcher(line); + i++; + if (!m.matches()) { + Assert.fail("Failed to match line #" + i + ": " + line); + } + // "implements" lines should not be in this output. + if (i == 2 || i == 4) i += 2; + } + if (lines.hasNext()) { + String line = lines.next(); + Assert.fail("Unexpected dcmd output: " + line); + } + + // Verify the output for the full hierarchy of DcmdBaseClass, including interfaces. + output = executor.execute("VM.class_hierarchy DcmdBaseClass -i -s"); + lines = output.asLines().iterator(); + i = 0; + String classLoaderAddr = null; + while (lines.hasNext()) { + String line = lines.next(); + Matcher m = expected_lines[i].matcher(line); + i++; + if (!m.matches()) { + Assert.fail("Failed to match line #" + i + ": " + line); + } + if (i == 2) { + // Fetch the ClassLoader address, which should be the same in + // subsequent lines. + classLoaderAddr = m.group(1); + System.out.println(classLoaderAddr); + } else if (i > 2) { + if (!classLoaderAddr.equals(m.group(1))) { + Assert.fail("Classloader address didn't match on line #" + + i + ": " + line); + } + } + if (i == expected_lines.length) break; + } + if (lines.hasNext()) { + String line = lines.next(); + Assert.fail("Unexpected dcmd output: " + line); + } + } + + @Test + public void jmx() throws ClassNotFoundException { + run(new JMXExecutor()); + } +} + +interface Intf1 { +} + +interface Intf2 extends Intf1 { +} + +class DcmdBaseClass implements Intf2 { +} + +class DcmdTestClass extends DcmdBaseClass { + static { + // Force creation of anonymous class (for the lambdaform). + Runnable r = () -> System.out.println("Hello"); + r.run(); + } +}