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src/share/vm/memory/iterator.cpp@e9ff18c4ace7 (annotated)

src/share/vm/memory/iterator.cpp

Wed, 02 Jun 2010 22:45:42 -0700

author

jrose

date

Wed, 02 Jun 2010 22:45:42 -0700

changeset 1934

e9ff18c4ace7

parent 1907

c18cbe5936b8

parent 1918

1a5913bf5e19

child 2314

f95d63e2154a

permissions

-rw-r--r--

Merge

duke@435	1	/*
jrose@1934	2	* Copyright (c) 1997, 2010, Oracle and/or its affiliates. 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	*
trims@1907	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907	20	* or visit www.oracle.com if you need additional information or have any
trims@1907	21	* questions.
duke@435	22	*
duke@435	23	*/
duke@435	24
duke@435	25	# include "incls/_precompiled.incl"
duke@435	26	# include "incls/_iterator.cpp.incl"
duke@435	27
jmasa@1370	28	#ifdef ASSERT
jmasa@1370	29	bool OopClosure::_must_remember_klasses = false;
jmasa@1370	30	#endif
jmasa@1370	31
duke@435	32	void ObjectToOopClosure::do_object(oop obj) {
duke@435	33	obj->oop_iterate(_cl);
duke@435	34	}
duke@435	35
duke@435	36	void VoidClosure::do_void() {
duke@435	37	ShouldNotCallThis();
duke@435	38	}
jmasa@1370	39
jmasa@1370	40	#ifdef ASSERT
jmasa@1370	41	bool OopClosure::must_remember_klasses() {
jmasa@1370	42	return _must_remember_klasses;
jmasa@1370	43	}
jmasa@1370	44	void OopClosure::set_must_remember_klasses(bool v) {
jmasa@1370	45	_must_remember_klasses = v;
jmasa@1370	46	}
jmasa@1370	47	#endif
jmasa@1370	48
jrose@1428	49
jrose@1424	50	MarkingCodeBlobClosure::MarkScope::MarkScope(bool activate)
jrose@1424	51	: _active(activate)
jrose@1424	52	{
jrose@1424	53	if (_active) nmethod::oops_do_marking_prologue();
jrose@1424	54	}
jrose@1424	55
jrose@1424	56	MarkingCodeBlobClosure::MarkScope::~MarkScope() {
jrose@1424	57	if (_active) nmethod::oops_do_marking_epilogue();
jrose@1424	58	}
jrose@1424	59
jrose@1424	60	void MarkingCodeBlobClosure::do_code_blob(CodeBlob* cb) {
twisti@1918	61	nmethod* nm = cb->as_nmethod_or_null();
twisti@1918	62	if (nm == NULL) return;
jrose@1424	63	if (!nm->test_set_oops_do_mark()) {
jrose@1424	64	NOT_PRODUCT(if (TraceScavenge) nm->print_on(tty, "oops_do, 1st visit\n"));
jrose@1424	65	do_newly_marked_nmethod(nm);
jrose@1424	66	} else {
jrose@1424	67	NOT_PRODUCT(if (TraceScavenge) nm->print_on(tty, "oops_do, skipped on 2nd visit\n"));
jrose@1424	68	}
jrose@1424	69	}
jrose@1424	70
jrose@1429	71	void CodeBlobToOopClosure::do_newly_marked_nmethod(nmethod* nm) {
jrose@1429	72	nm->oops_do(_cl, /*do_strong_roots_only=*/ true);
jrose@1424	73	}
jrose@1424	74
jrose@1424	75	void CodeBlobToOopClosure::do_code_blob(CodeBlob* cb) {
jrose@1424	76	if (!_do_marking) {
twisti@1918	77	nmethod* nm = cb->as_nmethod_or_null();
twisti@1918	78	NOT_PRODUCT(if (TraceScavenge && Verbose && nm != NULL) nm->print_on(tty, "oops_do, unmarked visit\n"));
jrose@1424	79	// This assert won't work, since there are lots of mini-passes
jrose@1424	80	// (mostly in debug mode) that co-exist with marking phases.
jrose@1424	81	//assert(!(cb->is_nmethod() && ((nmethod*)cb)->test_oops_do_mark()), "found marked nmethod during mark-free phase");
twisti@1918	82	if (nm != NULL) {
twisti@1918	83	nm->oops_do(_cl);
twisti@1918	84	}
jrose@1424	85	} else {
jrose@1424	86	MarkingCodeBlobClosure::do_code_blob(cb);
jrose@1424	87	}
jrose@1424	88	}
jrose@1424	89
jrose@1424	90