graphene/Pal/include/sigset.h

#ifndef __SIGSET_H__
#define __SIGSET_H__

/* __sig_atomic_t, __sigset_t, and related definitions.  Linux version.
   Copyright (C) 1991, 1992, 1994, 1996, 1997, 2007
   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, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.  */

#define _SIGSET_H_types 1
#define _SIGSET_H_fns   1

typedef int __sig_atomic_t;

/* A `sigset_t' has a bit for each signal.  */

# define _SIGSET_NWORDS	(64 / (8 * sizeof (unsigned long int)))

typedef struct
  {
    unsigned long int __val[_SIGSET_NWORDS];
  } __sigset_t;


/* Return a mask that includes the bit for SIG only.  */
# define __sigmask(sig) \
  (((unsigned long int) 1) << (((sig) - 1) % (8 * sizeof (unsigned long int))))

/* Return the word index for SIG.  */
# define __sigword(sig)	(((sig) - 1) / (8 * sizeof (unsigned long int)))

# define __sigemptyset(set) \
  ({ int __cnt = _SIGSET_NWORDS;				      \
		    __sigset_t *__set = (set);				      \
		    while (--__cnt >= 0) __set->__val[__cnt] = 0;	      \
		    0; })
# define __sigfillset(set) \
  ({ int __cnt = _SIGSET_NWORDS;				      \
		    __sigset_t *__set = (set);				      \
		    while (--__cnt >= 0) __set->__val[__cnt] = ~0UL;	      \
		    0; })
# define __sigcopyset(set, src) \
  ({ int __cnt = _SIGSET_NWORDS;				      \
		    __sigset_t *__set = (set);				      \
		    __sigset_t *__src = (src);				      \
		    while (--__cnt >= 0) __set->__val[__cnt] = __src->__val[__cnt]; \
		    0; })

/* These functions needn't check for a bogus signal number -- error
   checking is done in the non __ versions.  */

# define __SIGSETFN(NAME, BODY, CONST)					      \
  static inline int							      \
  NAME (CONST __sigset_t *__set, int __sig)				      \
  {									      \
    unsigned long int __mask = __sigmask (__sig);			      \
    unsigned long int __word = __sigword (__sig);			      \
    return BODY;							      \
  }

__SIGSETFN (__sigismember, (__set->__val[__word] & __mask) ? 1 : 0, __const)
__SIGSETFN (__sigaddset, ((__set->__val[__word] |= __mask), 0), )
__SIGSETFN (__sigdelset, ((__set->__val[__word] &= ~__mask), 0), )

# undef __SIGSETFN

#endif /* __SIGSET_H__  */