duke@435: /*
coleenp@4037:  * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
duke@435:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435:  *
duke@435:  * This code is free software; you can redistribute it and/or modify it
duke@435:  * under the terms of the GNU General Public License version 2 only, as
duke@435:  * published by the Free Software Foundation.
duke@435:  *
duke@435:  * This code is distributed in the hope that it will be useful, but WITHOUT
duke@435:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
duke@435:  * version 2 for more details (a copy is included in the LICENSE file that
duke@435:  * accompanied this code).
duke@435:  *
duke@435:  * You should have received a copy of the GNU General Public License version
duke@435:  * 2 along with this work; if not, write to the Free Software Foundation,
duke@435:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435:  *
trims@1907:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907:  * or visit www.oracle.com if you need additional information or have any
trims@1907:  * questions.
duke@435:  *
duke@435:  */
duke@435: 
stefank@2314: #include "precompiled.hpp"
stefank@2314: #include "memory/iterator.hpp"
stefank@2314: #include "oops/oop.inline.hpp"
duke@435: 
stefank@4050: void KlassToOopClosure::do_klass(Klass* k) {
stefank@4050:   k->oops_do(_oop_closure);
stefank@4050: }
stefank@4050: 
stefank@4298: void CLDToOopClosure::do_cld(ClassLoaderData* cld) {
stefank@4298:   cld->oops_do(_oop_closure, &_klass_closure, _must_claim_cld);
stefank@4298: }
stefank@4298: 
duke@435: void ObjectToOopClosure::do_object(oop obj) {
duke@435:   obj->oop_iterate(_cl);
duke@435: }
duke@435: 
duke@435: void VoidClosure::do_void() {
duke@435:   ShouldNotCallThis();
duke@435: }
jmasa@1370: 
jrose@1424: MarkingCodeBlobClosure::MarkScope::MarkScope(bool activate)
jrose@1424:   : _active(activate)
jrose@1424: {
jrose@1424:   if (_active)  nmethod::oops_do_marking_prologue();
jrose@1424: }
jrose@1424: 
jrose@1424: MarkingCodeBlobClosure::MarkScope::~MarkScope() {
jrose@1424:   if (_active)  nmethod::oops_do_marking_epilogue();
jrose@1424: }
jrose@1424: 
jrose@1424: void MarkingCodeBlobClosure::do_code_blob(CodeBlob* cb) {
twisti@1918:   nmethod* nm = cb->as_nmethod_or_null();
twisti@1918:   if (nm == NULL)  return;
jrose@1424:   if (!nm->test_set_oops_do_mark()) {
jrose@1424:     NOT_PRODUCT(if (TraceScavenge)  nm->print_on(tty, "oops_do, 1st visit\n"));
jrose@1424:     do_newly_marked_nmethod(nm);
jrose@1424:   } else {
jrose@1424:     NOT_PRODUCT(if (TraceScavenge)  nm->print_on(tty, "oops_do, skipped on 2nd visit\n"));
jrose@1424:   }
jrose@1424: }
jrose@1424: 
jrose@1429: void CodeBlobToOopClosure::do_newly_marked_nmethod(nmethod* nm) {
jrose@1429:   nm->oops_do(_cl, /*do_strong_roots_only=*/ true);
jrose@1424: }
jrose@1424: 
jrose@1424: void CodeBlobToOopClosure::do_code_blob(CodeBlob* cb) {
jrose@1424:   if (!_do_marking) {
twisti@1918:     nmethod* nm = cb->as_nmethod_or_null();
twisti@1918:     NOT_PRODUCT(if (TraceScavenge && Verbose && nm != NULL)  nm->print_on(tty, "oops_do, unmarked visit\n"));
jrose@1424:     // This assert won't work, since there are lots of mini-passes
jrose@1424:     // (mostly in debug mode) that co-exist with marking phases.
jrose@1424:     //assert(!(cb->is_nmethod() && ((nmethod*)cb)->test_oops_do_mark()), "found marked nmethod during mark-free phase");
twisti@1918:     if (nm != NULL) {
twisti@1918:       nm->oops_do(_cl);
twisti@1918:     }
jrose@1424:   } else {
jrose@1424:     MarkingCodeBlobClosure::do_code_blob(cb);
jrose@1424:   }
jrose@1424: }
jrose@1424: 
jrose@1424: