AIX definitions for sigset.h.

2000-03-21 01:25:59 +00:00 · 2000-03-21 01:25:59 +00:00 · 657870667b
parent 37b4419e82
commit 657870667b
1 changed files with 125 additions and 0 deletions
--- a/sysdeps/unix/sysv/aix/bits/sigset.h
+++ b/sysdeps/unix/sysv/aix/bits/sigset.h
@ -0,0 +1,125 @@
+/* __sig_atomic_t, __sigset_t, and related definitions.  AIX version.
+   Copyright (C) 1991,1992,1994,1996,1997,2000 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 Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef	_SIGSET_H_types
+# define _SIGSET_H_types	1
+
+typedef int __sig_atomic_t;
+
+/* A `sigset_t' has a bit for each signal.  */
+
+typedef struct
+  {
+    unsigned int __losigs;
+    unsigned int __hisigs;
+  } __sigset_t;
+
+#endif
+
+
+/* We only want to define these functions if <signal.h> was actually
+   included; otherwise we were included just to define the types.  Since we
+   are namespace-clean, it wouldn't hurt to define extra macros.  But
+   trouble can be caused by functions being defined (e.g., any global
+   register vars declared later will cause compilation errors).  */
+
+#if !defined _SIGSET_H_fns && defined _SIGNAL_H
+# define _SIGSET_H_fns 1
+
+# ifndef _EXTERN_INLINE
+#  define _EXTERN_INLINE extern __inline
+# endif
+
+/* Return a mask that includes the bit for SIG only.  */
+# define __sigmask(sig) \
+  (((unsigned long int) 1) << (((sig) - 1) % (8 * sizeof (unsigned int))))
+
+# if defined __GNUC__ && __GNUC__ >= 2
+#  define __sigemptyset(set) \
+  (__extension__ ({ sigset_t *__set = (set);				      \
+		    __set->__losigs = __set->__hisigs = 0;		      \
+		    0; }))
+#  define __sigfillset(set) \
+  (__extension__ ({ sigset_t *__set = (set);				      \
+		    __set->__losigs = __set->__hisigs = ~0u;		      \
+		    0; }))
+
+#  ifdef __USE_GNU
+/* The POSIX does not specify for handling the whole signal set in one
+   command.  This is often wanted and so we define three more functions
+   here.  */
+#   define __sigisemptyset(set) \
+  (__extension__ ({ const sigset_t *__set = (set);			      \
+		    (__set->__losigs | __set->__hisigs) == 0; }))
+#   define __sigandset(dest, left, right) \
+  (__extension__ ({ sigset_t *__dest = (dest);				      \
+		    const sigset_t *__left = (left);			      \
+		    const sigset_t *__right = (right);			      \
+		    __dest->__losigs = __left->__losigs & __right->__losigs;  \
+		    __dest->__hisigs = __left->__hisigs & __right->__hisigs;  \
+		    0; }))
+#   define __sigorset(dest, left, right) \
+  (__extension__ ({ sigset_t *__dest = (dest);				      \
+		    const sigset_t *__left = (left);			      \
+		    const sigset_t *__right = (right);			      \
+		    __dest->__losigs = __left->__losigs | __right->__losigs;  \
+		    __dest->__hisigs = __left->__hisigs | __right->__hisigs;  \
+		    0; }))
+#  endif
+# endif
+
+/* These functions needn't check for a bogus signal number -- error
+   checking is done in the non __ versions.  */
+
+extern int __sigismember (__const __sigset_t *, int);
+extern int __sigaddset (__sigset_t *, int);
+extern int __sigdelset (__sigset_t *, int);
+
+# ifdef __USE_EXTERN_INLINES
+_EXTERN_INLINE int
+__sigismember (__const __sigset_t *__set, int __sig)
+{
+  unsigned int __mask = __sigmask (__sig);
+
+  return ((__sig < 33 ? __set->__losigs : __set->__hisigs) & __mask ) ? 1 : 0;
+}
+
+_EXTERN_INLINE int
+__sigaddset (__sigset_t *__set, int __sig)
+{
+  unsigned int __mask = __sigmask (__sig);
+
+  (__sig < 33 ? __set->__losigs : __set->__hisigs) |= __mask;
+
+  return 0;
+}
+
+_EXTERN_INLINE int
+__sigdelset (__sigset_t *__set, int __sig)
+{
+  unsigned int __mask = __sigmask (__sig);
+
+  (__sig < 33 ? __set->__losigs : __set->__hisigs) &= ~__mask;
+
+  return 0;
+}
+# endif
+
+
+#endif /* ! _SIGSET_H_fns.  */