6578152: fill_region_with_object has usability and safety issues
Reviewed-by: apetrusenko, ysr
/* * Copyright 1997-2003 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * */// The BytecodeTracer is a helper class used by the interpreter for run-time// bytecode tracing. If bytecode tracing is turned on, trace() will be called// for each bytecode.//// By specialising the BytecodeClosure, all kinds of bytecode traces can// be done.#ifndef PRODUCT// class BytecodeTracer is only used by TraceBytecodes optionclass BytecodeClosure;class BytecodeTracer: AllStatic { private: static BytecodeClosure* _closure; public: static BytecodeClosure* std_closure(); // a printing closure static BytecodeClosure* closure() { return _closure; } static void set_closure(BytecodeClosure* closure) { _closure = closure; } static void trace(methodHandle method, address bcp, uintptr_t tos, uintptr_t tos2, outputStream* st = tty); static void trace(methodHandle method, address bcp, outputStream* st = tty);};// For each bytecode, a BytecodeClosure's trace() routine will be called.class BytecodeClosure { public: virtual void trace(methodHandle method, address bcp, uintptr_t tos, uintptr_t tos2, outputStream* st) = 0; virtual void trace(methodHandle method, address bcp, outputStream* st) = 0;};#endif // !PRODUCT