--- /dev/null 2018-04-03 12:55:20.301839954 +0200 +++ new/src/hotspot/share/gc/z/zUtils.cpp 2018-06-08 19:46:46.180848031 +0200 @@ -0,0 +1,49 @@ +/* + * Copyright (c) 2015, 2017, 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/z/zAddress.inline.hpp" +#include "gc/z/zUtils.inline.hpp" +#include "utilities/debug.hpp" + +#include + +uintptr_t ZUtils::alloc_aligned(size_t alignment, size_t size) { + void* res = NULL; + + if (posix_memalign(&res, alignment, size) != 0) { + fatal("posix_memalign() failed"); + } + + memset(res, 0, size); + + return (uintptr_t)res; +} + +void ZUtils::insert_filler_object(uintptr_t addr, size_t size) { + const size_t fill_size_in_words = bytes_to_words(size); + if (fill_size_in_words >= CollectedHeap::min_fill_size()) { + CollectedHeap::fill_with_objects((HeapWord*)ZAddress::good(addr), fill_size_in_words); + } +}