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Quelle safefetch_sigjmp.hppSprache: C |
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/* * Copyright (c) 2022 SAP SE. All rights reserved. * Copyright (c) 2022, 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. * */ #ifndef OS_POSIX_SAFEFETCH_SIGJMP_HPP #define OS_POSIX_SAFEFETCH_SIGJMP_HPP #include "utilities/globalDefinitions.hpp" // On Posix platforms that don't do anything better - or cannot, like Zero - // SafeFetch is implemented using setjmp/longjmp. That is reliable and portable, // but slower than other methods, and needs more thread stack (the sigjmp buffer // lives on the thread stack). int SafeFetch32_impl(int* adr, int errValue); intptr_t SafeFetchN_impl(intptr_t* adr, intptr_t errValue); // Handle safefetch, sigsetjmp style. Only call from signal handler. // If a safefetch jump had been established and the sig qualifies, we // jump back to the established jump point (and hence out of signal handling). bool handle_safefetch(int sig, address pc, void* context); #endif // OS_POSIX_SAFEFETCH_SIGJMP_HPP
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2026-08-25