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src/share/vm/interpreter/bytecodeTracer.hpp@feeb96a45707 (annotated)

src/share/vm/interpreter/bytecodeTracer.hpp

Wed, 28 May 2008 21:06:24 -0700

author

coleenp

date

Wed, 28 May 2008 21:06:24 -0700

changeset 602

feeb96a45707

parent 435

a61af66fc99e

child 1907

c18cbe5936b8

permissions

-rw-r--r--

6696264: assert("narrow oop can never be zero") for GCBasher & ParNewGC
Summary: decouple set_klass() with zeroing the gap when compressed.
Reviewed-by: kvn, ysr, jrose

duke@435	1	/*
duke@435	2	* Copyright 1997-2003 Sun Microsystems, Inc. All Rights Reserved.
duke@435	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435	4	*
duke@435	5	* This code is free software; you can redistribute it and/or modify it
duke@435	6	* under the terms of the GNU General Public License version 2 only, as
duke@435	7	* published by the Free Software Foundation.
duke@435	8	*
duke@435	9	* This code is distributed in the hope that it will be useful, but WITHOUT
duke@435	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@435	12	* version 2 for more details (a copy is included in the LICENSE file that
duke@435	13	* accompanied this code).
duke@435	14	*
duke@435	15	* You should have received a copy of the GNU General Public License version
duke@435	16	* 2 along with this work; if not, write to the Free Software Foundation,
duke@435	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435	18	*
duke@435	19	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
duke@435	20	* CA 95054 USA or visit www.sun.com if you need additional information or
duke@435	21	* have any questions.
duke@435	22	*
duke@435	23	*/
duke@435	24
duke@435	25	// The BytecodeTracer is a helper class used by the interpreter for run-time
duke@435	26	// bytecode tracing. If bytecode tracing is turned on, trace() will be called
duke@435	27	// for each bytecode.
duke@435	28	//
duke@435	29	// By specialising the BytecodeClosure, all kinds of bytecode traces can
duke@435	30	// be done.
duke@435	31
duke@435	32	#ifndef PRODUCT
duke@435	33	// class BytecodeTracer is only used by TraceBytecodes option
duke@435	34
duke@435	35	class BytecodeClosure;
duke@435	36	class BytecodeTracer: AllStatic {
duke@435	37	private:
duke@435	38	static BytecodeClosure* _closure;
duke@435	39
duke@435	40	public:
duke@435	41	static BytecodeClosure* std_closure(); // a printing closure
duke@435	42	static BytecodeClosure* closure() { return _closure; }
duke@435	43	static void set_closure(BytecodeClosure* closure) { _closure = closure; }
duke@435	44
duke@435	45	static void trace(methodHandle method, address bcp, uintptr_t tos, uintptr_t tos2, outputStream* st = tty);
duke@435	46	static void trace(methodHandle method, address bcp, outputStream* st = tty);
duke@435	47	};
duke@435	48
duke@435	49
duke@435	50	// For each bytecode, a BytecodeClosure's trace() routine will be called.
duke@435	51
duke@435	52	class BytecodeClosure {
duke@435	53	public:
duke@435	54	virtual void trace(methodHandle method, address bcp, uintptr_t tos, uintptr_t tos2, outputStream* st) = 0;
duke@435	55	virtual void trace(methodHandle method, address bcp, outputStream* st) = 0;
duke@435	56	};
duke@435	57
duke@435	58	#endif // !PRODUCT