| 1 | /* lockfile - Handle locking and unlocking of streams. Hurd pthread version. |
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| 2 | Copyright (C) 2000-2022 Free Software Foundation, Inc. |
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| 3 | This file is part of the GNU C Library. |
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| 4 | |
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| 5 | The GNU C Library is free software; you can redistribute it and/or |
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| 6 | modify it under the terms of the GNU Lesser General Public |
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| 7 | License as published by the Free Software Foundation; either |
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| 8 | version 2.1 of the License, or (at your option) any later version. |
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| 9 | |
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| 10 | The GNU C Library is distributed in the hope that it will be useful, |
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 13 | Lesser General Public License for more details. |
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| 14 | |
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| 15 | You should have received a copy of the GNU Lesser General Public |
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| 16 | License along with the GNU C Library; if not, see |
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| 17 | <https://www.gnu.org/licenses/>. */ |
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| 18 | |
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| 19 | #include <pthread.h> /* Must come before <stdio.h>! */ |
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| 20 | #include <stdio.h> |
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| 21 | |
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| 22 | void |
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| 23 | _cthreads_flockfile (FILE *fp) |
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| 24 | { |
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| 25 | _IO_lock_lock (*fp->_lock); |
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| 26 | } |
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| 27 | |
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| 28 | void |
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| 29 | _cthreads_funlockfile (FILE *fp) |
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| 30 | { |
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| 31 | _IO_lock_unlock (*fp->_lock); |
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| 32 | } |
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| 33 | |
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| 34 | int |
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| 35 | _cthreads_ftrylockfile (FILE *fp) |
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| 36 | { |
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| 37 | return __libc_lock_trylock_recursive (*fp->_lock); |
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| 38 | } |
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| 39 | |
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| 40 | #undef _IO_flockfile |
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| 41 | #undef _IO_funlockfile |
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| 42 | #undef _IO_ftrylockfile |
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| 43 | #undef flockfile |
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| 44 | #undef funlockfile |
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| 45 | #undef ftrylockfile |
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| 46 | |
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| 47 | void _IO_flockfile (FILE *) |
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| 48 | __attribute__ ((alias ("_cthreads_flockfile" ))); |
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| 49 | void _IO_funlockfile (FILE *) |
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| 50 | __attribute__ ((alias ("_cthreads_funlockfile" ))); |
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| 51 | int _IO_ftrylockfile (FILE *) |
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| 52 | __attribute__ ((alias ("_cthreads_ftrylockfile" ))); |
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| 53 | |
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| 54 | void flockfile (FILE *) |
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| 55 | __attribute__ ((weak, alias ("_cthreads_flockfile" ))); |
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| 56 | void funlockfile (FILE *) |
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| 57 | __attribute__ ((weak, alias ("_cthreads_funlockfile" ))); |
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| 58 | int ftrylockfile (FILE *) |
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| 59 | __attribute__ ((weak, alias ("_cthreads_ftrylockfile" ))); |
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| 60 | |
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