| /* Declarations for handling faults in the signal thread. |
| Copyright (C) 1994-2014 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library 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 |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #ifndef _HURD_FAULT_H |
| #define _HURD_FAULT_H |
| |
| #include <hurd/sigpreempt.h> |
| #include <setjmp.h> |
| |
| /* Call this before code that might fault in the signal thread; SIGNO is |
| the signal expected to possibly arrive. This behaves like setjmp: it |
| returns zero the first time, and returns again nonzero if the signal |
| does arrive. */ |
| |
| #define _hurdsig_catch_fault(sigset, firstcode, lastcode) \ |
| (_hurdsig_fault_preemptor.signals = (sigset), \ |
| _hurdsig_fault_preemptor.first = (long int) (firstcode), \ |
| _hurdsig_fault_preemptor.last = (long int) (lastcode), \ |
| setjmp (_hurdsig_fault_env)) |
| |
| /* Call this at the end of a section protected by _hurdsig_catch_fault. */ |
| |
| #define _hurdsig_end_catch_fault() \ |
| (_hurdsig_fault_preemptor.signals = 0) |
| |
| extern jmp_buf _hurdsig_fault_env; |
| extern struct hurd_signal_preemptor _hurdsig_fault_preemptor; |
| |
| |
| #define _hurdsig_catch_memory_fault(object) \ |
| _hurdsig_catch_fault (sigmask (SIGSEGV) | sigmask (SIGBUS), \ |
| (object), (object) + 1) |
| |
| |
| #endif /* hurdfault.h */ |
