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78 lines
3.2 KiB
C++
78 lines
3.2 KiB
C++
/*
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* Copyright (c) 2022, 2023, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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#ifndef SHARE_CLASSFILE_CLASSPRINTER_HPP
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#define SHARE_CLASSFILE_CLASSPRINTER_HPP
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#include "memory/allStatic.hpp"
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#include "utilities/globalDefinitions.hpp"
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class InstanceKlass;
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class Method;
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class outputStream;
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class Symbol;
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// ClassPrinter is intended to be called from findclass() and findmethod()
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// in debug.cpp (inside a debugger, such as gdb).
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//
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// The ClassPrinter::print_xxx() functions hold the ClassLoaderDataGraph_lock
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// (and the ttyLocker if ClassPrinter::PRINT_BYTECODE is selected). A deadlock
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// may happen if these functions are called in a context where these locks
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// are already held. Use with caution.
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class ClassPrinter : public AllStatic {
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class KlassPrintClosure;
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public:
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enum Mode : int {
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PRINT_METHOD_NAME = 1 << 0,
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PRINT_BYTECODE = 1 << 1,
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PRINT_BYTECODE_ADDR = 1 << 2,
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PRINT_DYNAMIC = 1 << 3, // extra information for invokedynamic (and dynamic constant ...)
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PRINT_METHOD_HANDLE = 1 << 4, // extra information for invokehandle
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};
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static bool has_mode(int flags, Mode mode) {
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return (flags & static_cast<int>(mode)) != 0;
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}
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static void print_flags_help(outputStream* os);
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// Parameters for print_classes() and print_methods():
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//
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// - The patterns are matched by StringUtils::is_star_match()
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// - class_name_pattern matches Klass::external_name(). E.g., "java/lang/Object" or "*ang/Object"
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// - method_pattern may optionally include the signature. E.g., "wait", "wait:()V" or "*ai*t:(*)V"
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// - flags must be OR'ed from ClassPrinter::Mode
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//
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// print_classes("java/lang/Object", 0x3, os) -> find j.l.Object and disasm all of its methods
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// print_methods("*ang/Object*", "wait", 0xff, os) -> detailed disasm of all "wait" methods in j.l.Object
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// print_methods("*ang/Object*", "wait:(*J*)V", 0x1, os) -> list all "wait" methods in j.l.Object that have a long parameter
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static void print_classes(const char* class_name_pattern, int flags, outputStream* os);
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static void print_methods(const char* class_name_pattern,
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const char* method_pattern, int flags, outputStream* os);
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};
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#endif // SHARE_CLASSFILE_CLASSPRINTER_HPP
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