jdk

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/*
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 * Copyright (c) 2016, 2024, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 */
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#include "precompiled.hpp"
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#ifdef AIX
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#include "runtime/os.inline.hpp"
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#include "utilities/debug.hpp"
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#include "utilities/globalDefinitions.hpp"
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#include "unittest.hpp"
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// On Aix, when using shmget() in os::attempt_reserve_memory_at() we should fail with attach
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// attempts not aligned to shmget() segment boundaries (256m)
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// But shmget() is only used in cases we want to have 64K pages and mmap() does not provide it.
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TEST_VM(os_aix, aix_reserve_at_non_shmlba_aligned_address) {
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  if (os::vm_page_size() != 4*K && !os::Aix::supports_64K_mmap_pages()) {
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    // With this condition true shmget() is used inside
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    char* p = os::attempt_reserve_memory_at((char*)0x1f00000, M);
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    ASSERT_EQ(p, nullptr); // should have failed
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    p = os::attempt_reserve_memory_at((char*)((64 * G) + M), M);
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    ASSERT_EQ(p, nullptr); // should have failed
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  }
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}
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#endif // AIX
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