| /* |
| * Copyright (c) 2022, 2023, 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. |
| * |
| */ |
| |
| #include "precompiled.hpp" |
| #include "classfile/classLoaderData.hpp" |
| #include "classfile/classLoaderDataGraph.hpp" |
| #include "classfile/classPrinter.hpp" |
| #include "memory/iterator.hpp" |
| #include "memory/resourceArea.hpp" |
| #include "oops/instanceKlass.hpp" |
| #include "oops/klass.hpp" |
| #include "oops/method.hpp" |
| #include "oops/symbol.hpp" |
| #include "utilities/ostream.hpp" |
| |
| class ClassPrinter::KlassPrintClosure : public LockedClassesDo { |
| const char* _class_name_pattern; |
| const char* _method_name_pattern; |
| const char* _method_signature_pattern; |
| bool _always_print_class_name; |
| int _flags; |
| outputStream* _st; |
| int _num; |
| bool _has_printed_methods; |
| public: |
| KlassPrintClosure(const char* class_name_pattern, |
| const char* method_name_pattern, |
| const char* method_signature_pattern, |
| bool always_print_class_name, |
| int flags, outputStream* st) |
| : _class_name_pattern(class_name_pattern), |
| _method_name_pattern(method_name_pattern), |
| _method_signature_pattern(method_signature_pattern), |
| _always_print_class_name(always_print_class_name), |
| _flags(flags), _st(st), _num(0), _has_printed_methods(false) |
| { |
| if (has_mode(_flags, PRINT_METHOD_HANDLE)) { |
| _flags |= (PRINT_METHOD_NAME | PRINT_BYTECODE); |
| } |
| if (has_mode(_flags, PRINT_DYNAMIC)) { |
| _flags |= (PRINT_METHOD_NAME | PRINT_BYTECODE); |
| } |
| if (has_mode(_flags, PRINT_BYTECODE_ADDR)) { |
| _flags |= (PRINT_METHOD_NAME | PRINT_BYTECODE); |
| } |
| if (has_mode(_flags, PRINT_BYTECODE)) { |
| _flags |= (PRINT_METHOD_NAME); |
| } |
| } |
| |
| virtual void do_klass(Klass* k) { |
| if (!k->is_instance_klass()) { |
| return; |
| } |
| print_instance_klass(InstanceKlass::cast(k)); |
| } |
| |
| static bool match(const char* pattern, Symbol* sym) { |
| return (pattern == nullptr || sym->is_star_match(pattern)); |
| } |
| |
| void print_klass_name(InstanceKlass* ik) { |
| _st->print("[%3d] " INTPTR_FORMAT " class %s ", _num++, p2i(ik), ik->name()->as_C_string()); |
| ik->class_loader_data()->print_value_on(_st); |
| _st->cr(); |
| } |
| |
| void print_instance_klass(InstanceKlass* ik) { |
| if (ik->is_loaded() && ik->name()->is_star_match(_class_name_pattern)) { |
| ResourceMark rm; |
| if (_has_printed_methods) { |
| // We have printed some methods in the previous class. |
| // Print a new line to separate the two classes |
| _st->cr(); |
| } |
| _has_printed_methods = false; |
| if (_always_print_class_name) { |
| print_klass_name(ik); |
| } |
| |
| if (has_mode(_flags, ClassPrinter::PRINT_METHOD_NAME)) { |
| bool print_codes = has_mode(_flags, ClassPrinter::PRINT_BYTECODE); |
| int len = ik->methods()->length(); |
| int num_methods_printed = 0; |
| |
| for (int index = 0; index < len; index++) { |
| Method* m = ik->methods()->at(index); |
| if (match(_method_name_pattern, m->name()) && |
| match(_method_signature_pattern, m->signature())) { |
| if (print_codes && num_methods_printed++ > 0) { |
| _st->cr(); |
| } |
| |
| if (_has_printed_methods == false) { |
| if (!_always_print_class_name) { |
| print_klass_name(ik); |
| } |
| _has_printed_methods = true; |
| } |
| print_method(m); |
| } |
| } |
| } |
| } |
| } |
| |
| void print_method(Method* m) { |
| bool print_codes = has_mode(_flags, ClassPrinter::PRINT_BYTECODE); |
| _st->print_cr(INTPTR_FORMAT " %smethod %s : %s", p2i(m), |
| m->is_static() ? "static " : "", |
| m->name()->as_C_string(), m->signature()->as_C_string()); |
| if (print_codes) { |
| m->print_codes_on(_st, _flags); |
| } |
| } |
| }; |
| |
| void ClassPrinter::print_flags_help(outputStream* os) { |
| os->print_cr("flags (bitmask):"); |
| os->print_cr(" 0x%02x - print names of methods", PRINT_METHOD_NAME); |
| os->print_cr(" 0x%02x - print bytecodes", PRINT_BYTECODE); |
| os->print_cr(" 0x%02x - print the address of bytecodes", PRINT_BYTECODE_ADDR); |
| os->print_cr(" 0x%02x - print info for invokedynamic", PRINT_DYNAMIC); |
| os->print_cr(" 0x%02x - print info for invokehandle", PRINT_METHOD_HANDLE); |
| os->cr(); |
| } |
| |
| void ClassPrinter::print_classes(const char* class_name_pattern, int flags, outputStream* os) { |
| KlassPrintClosure closure(class_name_pattern, nullptr, nullptr, true, flags, os); |
| ClassLoaderDataGraph::classes_do(&closure); |
| } |
| |
| void ClassPrinter::print_methods(const char* class_name_pattern, |
| const char* method_pattern, int flags, outputStream* os) { |
| ResourceMark rm; |
| const char* method_name_pattern; |
| const char* method_signature_pattern; |
| |
| const char* colon = strchr(method_pattern, ':'); |
| if (colon == nullptr) { |
| method_name_pattern = method_pattern; |
| method_signature_pattern = nullptr; |
| } else { |
| ptrdiff_t name_pat_len = colon - method_pattern; |
| assert(name_pat_len >= 0, "sanity"); |
| char* buf = NEW_RESOURCE_ARRAY(char, name_pat_len + 1); |
| strncpy(buf, method_pattern, name_pat_len); |
| buf[name_pat_len] = 0; |
| |
| method_name_pattern = buf; |
| method_signature_pattern = colon + 1; |
| } |
| |
| KlassPrintClosure closure(class_name_pattern, method_name_pattern, method_signature_pattern, |
| false, flags | PRINT_METHOD_NAME, os); |
| ClassLoaderDataGraph::classes_do(&closure); |
| } |
