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src/hotspot/share/gc/shared/locationPrinter.cpp
50 строк
2 KB
Erik Österlund
8229278: Improve hs_err location printing to assume less about GC internals
28 авг 2019, 12:19
28 авг 2019, 12:19
855f16e
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/* * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ #include "precompiled.hpp" #include "gc/shared/collectedHeap.hpp" #include "gc/shared/locationPrinter.hpp" #include "memory/universe.hpp" #include "runtime/os.hpp" #include "oops/klass.hpp" bool LocationPrinter::is_valid_obj(void* obj) { if (!is_object_aligned(obj)) { return false; } if (obj < (void*)os::min_page_size()) { return false; } // We need at least the mark and the klass word in the committed region. if (!os::is_readable_range(obj, (HeapWord*)obj + oopDesc::header_size())) { return false; } if (!Universe::heap()->is_in(obj)) { return false; } Klass* k = (Klass*)oopDesc::load_klass_raw((oopDesc*)obj); return Klass::is_valid(k); }