StdLib/Include/sys/sigtypes.h

   1 /*  $NetBSD: sigtypes.h,v 1.8 2005/12/11 12:25:21 christos Exp $  */
   2
   3 /*
   4  * Copyright (c) 1982, 1986, 1989, 1991, 1993
   5  *  The Regents of the University of California.  All rights reserved.
   6  * (c) UNIX System Laboratories, Inc.
   7  * All or some portions of this file are derived from material licensed
   8  * to the University of California by American Telephone and Telegraph
   9  * Co. or Unix System Laboratories, Inc. and are reproduced herein with
  10  * the permission of UNIX System Laboratories, Inc.
  11  *
  12  * Redistribution and use in source and binary forms, with or without
  13  * modification, are permitted provided that the following conditions
  14  * are met:
  15  * 1. Redistributions of source code must retain the above copyright
  16  *    notice, this list of conditions and the following disclaimer.
  17  * 2. Redistributions in binary form must reproduce the above copyright
  18  *    notice, this list of conditions and the following disclaimer in the
  19  *    documentation and/or other materials provided with the distribution.
  20  * 3. Neither the name of the University nor the names of its contributors
  21  *    may be used to endorse or promote products derived from this software
  22  *    without specific prior written permission.
  23  *
  24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  34  * SUCH DAMAGE.
  35  *
  36  *  @(#)signal.h  8.4 (Berkeley) 5/4/95
  37  */
  38
  39 #ifndef _SYS_SIGTYPES_H_
  40 #define _SYS_SIGTYPES_H_
  41
  42 /*
  43  * This header file defines various signal-related types.  We also keep
  44  * the macros to manipulate sigset_t here, to encapsulate knowledge of
  45  * its internals.
  46  */
  47
  48 #include <sys/featuretest.h>
  49 #include <machine/int_types.h>
  50 #include <machine/ansi.h>
  51
  52 #ifdef _EFI_SIZE_T_
  53   typedef _EFI_SIZE_T_  size_t;
  54   #undef _EFI_SIZE_T_
  55   #undef _BSD_SIZE_T_
  56 #endif
  57
  58 #if defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) || \
  59     defined(_NETBSD_SOURCE)
  60
  61 typedef struct {
  62   __uint32_t  __bits[4];
  63 } sigset_t;
  64
  65 /*
  66  * Macro for manipulating signal masks.
  67  */
  68 #define __sigmask(n)    (1 << (((unsigned int)(n) - 1) & 31))
  69 #define __sigword(n)    (((unsigned int)(n) - 1) >> 5)
  70 #define __sigaddset(s, n) ((s)->__bits[__sigword(n)] |= __sigmask(n))
  71 #define __sigdelset(s, n) ((s)->__bits[__sigword(n)] &= ~__sigmask(n))
  72 #define __sigismember(s, n) (((s)->__bits[__sigword(n)] & __sigmask(n)) != 0)
  73 #define __sigemptyset(s)  ((s)->__bits[0] = 0x00000000, \
  74          (s)->__bits[1] = 0x00000000, \
  75          (s)->__bits[2] = 0x00000000, \
  76          (s)->__bits[3] = 0x00000000)
  77 #define __sigsetequal(s1,s2)  ((s1)->__bits[0] == (s2)->__bits[0] && \
  78          (s1)->__bits[1] == (s2)->__bits[1] && \
  79          (s1)->__bits[2] == (s2)->__bits[2] && \
  80          (s1)->__bits[3] == (s2)->__bits[3])
  81 #define __sigfillset(s)   ((s)->__bits[0] = 0xffffffff, \
  82          (s)->__bits[1] = 0xffffffff, \
  83          (s)->__bits[2] = 0xffffffff, \
  84          (s)->__bits[3] = 0xffffffff)
  85 #define __sigplusset(s, t) \
  86   do {            \
  87     (t)->__bits[0] |= (s)->__bits[0]; \
  88     (t)->__bits[1] |= (s)->__bits[1]; \
  89     (t)->__bits[2] |= (s)->__bits[2]; \
  90     (t)->__bits[3] |= (s)->__bits[3]; \
  91   } while (/* CONSTCOND */ 0)
  92 #define __sigminusset(s, t) \
  93   do {            \
  94     (t)->__bits[0] &= ~(s)->__bits[0];  \
  95     (t)->__bits[1] &= ~(s)->__bits[1];  \
  96     (t)->__bits[2] &= ~(s)->__bits[2];  \
  97     (t)->__bits[3] &= ~(s)->__bits[3];  \
  98   } while (/* CONSTCOND */ 0)
  99 #define __sigandset(s, t) \
 100   do {            \
 101     (t)->__bits[0] &= (s)->__bits[0]; \
 102     (t)->__bits[1] &= (s)->__bits[1]; \
 103     (t)->__bits[2] &= (s)->__bits[2]; \
 104     (t)->__bits[3] &= (s)->__bits[3]; \
 105   } while (/* CONSTCOND */ 0)
 106
 107 #if (defined(_XOPEN_SOURCE) && defined(_XOPEN_SOURCE_EXTENDED)) || \
 108     (_XOPEN_SOURCE - 0) >= 500 || defined(_NETBSD_SOURCE)
 109 typedef struct
 110 #if defined(_NETBSD_SOURCE)
 111                sigaltstack
 112 #endif /* _NETBSD_SOURCE */
 113          {
 114   void  *ss_sp;     /* signal stack base */
 115   size_t  ss_size;    /* signal stack length */
 116   int ss_flags;   /* SS_DISABLE and/or SS_ONSTACK */
 117 } stack_t;
 118
 119 #endif /* _XOPEN_SOURCE_EXTENDED || XOPEN_SOURCE >= 500 || _NETBSD_SOURCE */
 120
 121 #endif  /* _POSIX_C_SOURCE || _XOPEN_SOURCE || ... */
 122
 123 #endif  /* !_SYS_SIGTYPES_H_ */