diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/internal-sigset.h')
-rw-r--r-- | sysdeps/unix/sysv/linux/internal-sigset.h | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/internal-sigset.h b/sysdeps/unix/sysv/linux/internal-sigset.h new file mode 100644 index 0000000000..46939ddf15 --- /dev/null +++ b/sysdeps/unix/sysv/linux/internal-sigset.h @@ -0,0 +1,105 @@ +/* Internal sigset_t definition. + Copyright (C) 2022 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 + <https://www.gnu.org/licenses/>. */ + +#ifndef _INTERNAL_SIGSET_H +#define _INTERNAL_SIGSET_H + +#include <sigsetops.h> + +typedef struct +{ + unsigned long int __val[__NSIG_WORDS]; +} internal_sigset_t; + +static inline void +internal_sigset_from_sigset (internal_sigset_t *iset, const sigset_t *set) +{ + int cnt = __NSIG_WORDS; + while (--cnt >= 0) + iset->__val[cnt] = set->__val[cnt]; +} + +static inline void +internal_sigemptyset (internal_sigset_t *set) +{ + int cnt = __NSIG_WORDS; + while (--cnt >= 0) + set->__val[cnt] = 0; +} + +static inline void +internal_sigfillset (internal_sigset_t *set) +{ + int cnt = __NSIG_WORDS; + while (--cnt >= 0) + set->__val[cnt] = ~0UL; +} + +static inline int +internal_sigisemptyset (const internal_sigset_t *set) +{ + int cnt = __NSIG_WORDS; + int ret = set->__val[--cnt]; + while (ret == 0 && --cnt >= 0) + ret = set->__val[cnt]; + return ret == 0; +} + +static inline void +internal_sigandset (internal_sigset_t *dest, const internal_sigset_t *left, + const internal_sigset_t *right) +{ + int cnt = __NSIG_WORDS; + while (--cnt >= 0) + dest->__val[cnt] = left->__val[cnt] & right->__val[cnt]; +} + +static inline void +internal_sigorset (internal_sigset_t *dest, const internal_sigset_t *left, + const internal_sigset_t *right) +{ + int cnt = __NSIG_WORDS; + while (--cnt >= 0) + dest->__val[cnt] = left->__val[cnt] | right->__val[cnt]; +} + +static inline int +internal_sigismember (const internal_sigset_t *set, int sig) +{ + unsigned long int mask = __sigmask (sig); + unsigned long int word = __sigword (sig); + return set->__val[word] & mask ? 1 : 0; +} + +static inline void +internal_sigaddset (internal_sigset_t *set, int sig) +{ + unsigned long int mask = __sigmask (sig); + unsigned long int word = __sigword (sig); + set->__val[word] |= mask; +} + +static inline void +internal_sigdelset (internal_sigset_t *set, int sig) +{ + unsigned long int mask = __sigmask (sig); + unsigned long int word = __sigword (sig); + set->__val[word] &= ~mask; +} + +#endif /* _INTERNAL_SIGSET_H */ |