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59 lines
2.1 KiB
C++
59 lines
2.1 KiB
C++
/*
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* Copyright (c) 1997, 2025, Oracle and/or its affiliates. All rights reserved.
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* Copyright (c) 2022 SAP SE. 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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*/
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#ifndef SHARE_RUNTIME_SAFEFETCH_HPP
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#define SHARE_RUNTIME_SAFEFETCH_HPP
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#include "utilities/macros.hpp"
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// Safefetch allows to load a value from a location that's not known
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// to be valid. If the load causes a fault, the error value is returned.
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#if defined(_WIN32) && !defined(_M_ARM64)
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// Windows x86_64 uses Structured Exception Handling
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#include "safefetch_windows.hpp"
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#elif defined(ZERO) || defined (_AIX)
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// These platforms implement safefetch via Posix sigsetjmp/longjmp.
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// This is slower than the other methods and uses more thread stack,
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// but its safe and portable.
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#include "safefetch_sigjmp.hpp"
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#define SAFEFETCH_METHOD_SIGSETJMP
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#else
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// All other platforms use static assembly
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#include "safefetch_static.hpp"
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#define SAFEFETCH_METHOD_STATIC_ASSEMBLY
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#endif
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inline int SafeFetch32(int* adr, int errValue) {
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return SafeFetch32_impl(adr, errValue);
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}
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inline intptr_t SafeFetchN(intptr_t* adr, intptr_t errValue) {
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return SafeFetchN_impl(adr, errValue);
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}
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#endif // SHARE_RUNTIME_SAFEFETCH_HPP
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