51 lines
1.8 KiB
C
51 lines
1.8 KiB
C
/* Declarations for handling faults in the signal thread.
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Copyright (C) 1994-2022 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#ifndef _HURD_FAULT_H
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#define _HURD_FAULT_H
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#include <hurd/sigpreempt.h>
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#include <setjmp.h>
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/* Call this before code that might fault in the signal thread; SIGNO is
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the signal expected to possibly arrive. This behaves like setjmp: it
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returns zero the first time, and returns again nonzero if the signal
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does arrive. */
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#define _hurdsig_catch_fault(sigset, firstcode, lastcode) \
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(_hurdsig_fault_preemptor.signals = (sigset), \
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_hurdsig_fault_preemptor.first = (long int) (firstcode), \
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_hurdsig_fault_preemptor.last = (long int) (lastcode), \
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setjmp (_hurdsig_fault_env))
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/* Call this at the end of a section protected by _hurdsig_catch_fault. */
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#define _hurdsig_end_catch_fault() \
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(_hurdsig_fault_preemptor.signals = 0)
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extern jmp_buf _hurdsig_fault_env;
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extern struct hurd_signal_preemptor _hurdsig_fault_preemptor;
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#define _hurdsig_catch_memory_fault(object) \
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_hurdsig_catch_fault (__sigmask (SIGSEGV) | __sigmask (SIGBUS), \
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(object), (object) + 1)
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#endif /* hurdfault.h */
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