1 /*

     2  * Copyright (c) 2015, 2019, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  */

    23 

    24 #include "precompiled.hpp"

    25 #include "gc/z/zHeap.hpp"

    26 #include "gc/z/zOopClosures.inline.hpp"

    27 #include "gc/z/zOop.inline.hpp"

    28 #include "memory/iterator.inline.hpp"

    29 #include "oops/access.inline.hpp"

    30 #include "oops/oop.inline.hpp"

    31 #include "runtime/safepoint.hpp"

    32 #include "utilities/debug.hpp"

    33 #include "utilities/globalDefinitions.hpp"

    34 

    35 void ZVerifyOopClosure::do_oop(oop* p) {

    36   guarantee(SafepointSynchronize::is_at_safepoint(), "Must be at a safepoint");

    37   guarantee(ZGlobalPhase == ZPhaseMarkCompleted, "Invalid phase");

    38   guarantee(!ZResurrection::is_blocked(), "Invalid phase");

    39 

    40   const oop o = RawAccess<>::oop_load(p);

    41   if (o != NULL) {

    42     const uintptr_t addr = ZOop::to_address(o);

    43     const uintptr_t good_addr = ZAddress::good(addr);

    44     guarantee(ZAddress::is_good(addr) || ZAddress::is_finalizable_good(addr),

    45               "Bad oop " PTR_FORMAT " found at " PTR_FORMAT ", expected " PTR_FORMAT,

    46               addr, p2i(p), good_addr);

    47     guarantee(oopDesc::is_oop(ZOop::from_address(good_addr)),

    48               "Bad object " PTR_FORMAT " found at " PTR_FORMAT,

    49               addr, p2i(p));

    50   }

    51 }

    52 

    53 void ZVerifyOopClosure::do_oop(narrowOop* p) {

    54   ShouldNotReachHere();

    55 }

    56 

    57 void ZVerifyObjectClosure::do_object(oop o) {

    58   ZVerifyOopClosure cl;

    59   o->oop_iterate(&cl);

    60 }