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src/share/vm/code/pcDesc.cpp@72088be4b386 (annotated)

src/share/vm/code/pcDesc.cpp

Thu, 20 Aug 2009 12:42:57 -0700

author

cfang

date

Thu, 20 Aug 2009 12:42:57 -0700

changeset 1366

72088be4b386

parent 435

a61af66fc99e

child 1687

f516d5d7a019

permissions

-rw-r--r--

6873116: Modify reexecute implementation to use pcDesc to record the reexecute bit
Summary: use PcDesc to keep record of the reexecute bit instead of using DebugInfoStreams
Reviewed-by: kvn, never, twisti

duke@435	1	/*
cfang@1366	2	* Copyright 1997-2009 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	# include "incls/_precompiled.incl"
duke@435	26	# include "incls/_pcDesc.cpp.incl"
duke@435	27
duke@435	28	PcDesc::PcDesc(int pc_offset, int scope_decode_offset, int obj_decode_offset) {
cfang@1366	29	assert(sizeof(PcDescFlags) <= 4, "occupies more than a word");
duke@435	30	_pc_offset = pc_offset;
duke@435	31	_scope_decode_offset = scope_decode_offset;
duke@435	32	_obj_decode_offset = obj_decode_offset;
cfang@1366	33	_flags.word = 0;
duke@435	34	}
duke@435	35
duke@435	36	address PcDesc::real_pc(const nmethod* code) const {
duke@435	37	return code->instructions_begin() + pc_offset();
duke@435	38	}
duke@435	39
duke@435	40	void PcDesc::print(nmethod* code) {
duke@435	41	#ifndef PRODUCT
duke@435	42	ResourceMark rm;
duke@435	43	tty->print_cr("PcDesc(pc=0x%lx offset=%x):", real_pc(code), pc_offset());
duke@435	44
duke@435	45	if (scope_decode_offset() == DebugInformationRecorder::serialized_null) {
duke@435	46	return;
duke@435	47	}
duke@435	48
duke@435	49	for (ScopeDesc* sd = code->scope_desc_at(real_pc(code));
duke@435	50	sd != NULL;
duke@435	51	sd = sd->sender()) {
duke@435	52	tty->print(" ");
duke@435	53	sd->method()->print_short_name(tty);
duke@435	54	tty->print(" @%d", sd->bci());
cfang@1366	55	tty->print(" reexecute=%s", sd->should_reexecute()?"true":"false");
duke@435	56	tty->cr();
duke@435	57	}
duke@435	58	#endif
duke@435	59	}
duke@435	60
duke@435	61	bool PcDesc::verify(nmethod* code) {
duke@435	62	//Unimplemented();
duke@435	63	return true;
duke@435	64	}