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/* Internal sigset_t definition.
Copyright (C) 2022-2025 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 _internal_sigset_t
{
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;
unsigned long 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);
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);
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);
int word = __sigword (sig);
set->__val[word] &= ~mask;
}
#endif /* _INTERNAL_SIGSET_H */
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