jdk8-mips64-public/hotspot: src/share/vm/memory/iterator.cpp@a1423fe86a18

     1 /*

     2  * Copyright 1997-2009 Sun Microsystems, Inc.  All Rights Reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    20  * CA 95054 USA or visit www.sun.com if you need additional information or

    21  * have any questions.

    22  *

    23  */

    25 # include "incls/_precompiled.incl"

    26 # include "incls/_iterator.cpp.incl"

    28 #ifdef ASSERT

    29 bool OopClosure::_must_remember_klasses = false;

    30 #endif

    32 void ObjectToOopClosure::do_object(oop obj) {

    33   obj->oop_iterate(_cl);

    34 }

    36 void VoidClosure::do_void() {

    37   ShouldNotCallThis();

    38 }

    40 #ifdef ASSERT

    41 bool OopClosure::must_remember_klasses() {

    42   return _must_remember_klasses;

    43 }

    44 void OopClosure::set_must_remember_klasses(bool v) {

    45   _must_remember_klasses = v;

    46 }

    47 #endif

    50 MarkingCodeBlobClosure::MarkScope::MarkScope(bool activate)

    51   : _active(activate)

    52 {

    53   if (_active)  nmethod::oops_do_marking_prologue();

    54 }

    56 MarkingCodeBlobClosure::MarkScope::~MarkScope() {

    57   if (_active)  nmethod::oops_do_marking_epilogue();

    58 }

    60 void MarkingCodeBlobClosure::do_code_blob(CodeBlob* cb) {

    61   if (!cb->is_nmethod())  return;

    62   nmethod* nm = (nmethod*) cb;

    63   if (!nm->test_set_oops_do_mark()) {

    64     NOT_PRODUCT(if (TraceScavenge)  nm->print_on(tty, "oops_do, 1st visit\n"));

    65     do_newly_marked_nmethod(nm);

    66   } else {

    67     NOT_PRODUCT(if (TraceScavenge)  nm->print_on(tty, "oops_do, skipped on 2nd visit\n"));

    68   }

    69 }

    71 void CodeBlobToOopClosure::do_newly_marked_nmethod(nmethod* nm) {

    72   nm->oops_do(_cl, /*do_strong_roots_only=*/ true);

    73 }

    75 void CodeBlobToOopClosure::do_code_blob(CodeBlob* cb) {

    76   if (!_do_marking) {

    77     NOT_PRODUCT(if (TraceScavenge && Verbose && cb->is_nmethod())  ((nmethod*)cb)->print_on(tty, "oops_do, unmarked visit\n"));

    78     // This assert won't work, since there are lots of mini-passes

    79     // (mostly in debug mode) that co-exist with marking phases.

    80     //assert(!(cb->is_nmethod() && ((nmethod*)cb)->test_oops_do_mark()), "found marked nmethod during mark-free phase");

    81     cb->oops_do(_cl);

    82   } else {

    83     MarkingCodeBlobClosure::do_code_blob(cb);

    84   }

    85 }

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