/* * 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. *
*/
bool LocationPrinter::is_valid_obj(void* obj) { if (!is_object_aligned(obj)) { returnfalse;
} if (obj < (void*)os::min_page_size()) { returnfalse;
}
// 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())) { returnfalse;
} if (!Universe::heap()->is_in(obj)) { returnfalse;
}
Klass* k = (Klass*)oopDesc::load_klass_raw((oopDesc*)obj); return Klass::is_valid(k);
}
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