ff34f690cc
they were POSIX.1 compliant, because users have misinterpreted the spec and have written programs that depend on -1 being returned when a signal number is out of range. This made initialization of signal masks significantly more expensive. This change uses GCC's inline function extension to provide macro-like signal mask manipulation functions. Since most of the time constants like SIGINT is used, gcc is able to remove unused range checking code. Gcc is also smart enough to coalesce adjacent sigemptyset(), sigaddset(), sigdelset(), and sigfullset() calls into a single assignment.
116 lines
4.0 KiB
C
116 lines
4.0 KiB
C
/* $NetBSD: signal.h,v 1.4 1995/01/05 06:01:18 jtc Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 1991, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* @(#)signal.h 8.3 (Berkeley) 3/30/94
|
|
*/
|
|
|
|
#ifndef _USER_SIGNAL_H
|
|
#define _USER_SIGNAL_H
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/cdefs.h>
|
|
#include <sys/signal.h>
|
|
|
|
#if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
|
|
extern __const char *__const sys_signame[NSIG];
|
|
extern __const char *__const sys_siglist[NSIG];
|
|
#endif
|
|
|
|
__BEGIN_DECLS
|
|
int raise __P((int));
|
|
#ifndef _ANSI_SOURCE
|
|
int kill __P((pid_t, int));
|
|
int sigaction __P((int, const struct sigaction *, struct sigaction *));
|
|
int sigaddset __P((sigset_t *, int));
|
|
int sigdelset __P((sigset_t *, int));
|
|
int sigemptyset __P((sigset_t *));
|
|
int sigfillset __P((sigset_t *));
|
|
int sigismember __P((const sigset_t *, int));
|
|
int sigpending __P((sigset_t *));
|
|
int sigprocmask __P((int, const sigset_t *, sigset_t *));
|
|
int sigsuspend __P((const sigset_t *));
|
|
|
|
#if defined(__GNUC__) && defined(__STDC__)
|
|
extern __inline int sigaddset(sigset_t *set, int signo) {
|
|
extern int errno;
|
|
|
|
if (signo <= 0 || signo >= 32) {
|
|
errno = 22; /* EINVAL */
|
|
return -1;
|
|
}
|
|
*set |= (1 << ((signo)-1)); /* sigmask(signo) */
|
|
return (0);
|
|
}
|
|
|
|
extern __inline int sigdelset(sigset_t *set, int signo) {
|
|
extern int errno;
|
|
|
|
if (signo <= 0 || signo >= 32) {
|
|
errno = 22; /* EINVAL */
|
|
return -1;
|
|
}
|
|
*set &= ~(1 << ((signo)-1)); /* sigmask(signo) */
|
|
return (0);
|
|
}
|
|
|
|
extern __inline int sigismember(const sigset_t *set, int signo) {
|
|
extern int errno;
|
|
|
|
if (signo <= 0 || signo >= 32) {
|
|
errno = 22; /* EINVAL */
|
|
return -1;
|
|
}
|
|
return ((*set & (1 << ((signo)-1))) != 0);
|
|
}
|
|
#endif
|
|
|
|
/* List definitions after function declarations, or Reiser cpp gets upset. */
|
|
#define sigemptyset(set) (*(set) = 0, 0)
|
|
#define sigfillset(set) (*(set) = ~(sigset_t)0, 0)
|
|
#ifndef _POSIX_SOURCE
|
|
int killpg __P((pid_t, int));
|
|
int sigblock __P((int));
|
|
int siginterrupt __P((int, int));
|
|
int sigpause __P((int));
|
|
int sigreturn __P((struct sigcontext *));
|
|
int sigsetmask __P((int));
|
|
int sigstack __P((const struct sigstack *, struct sigstack *));
|
|
int sigvec __P((int, struct sigvec *, struct sigvec *));
|
|
void psignal __P((unsigned int, const char *));
|
|
#endif /* !_POSIX_SOURCE */
|
|
#endif /* !_ANSI_SOURCE */
|
|
__END_DECLS
|
|
|
|
#endif /* !_USER_SIGNAL_H */
|