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/* Generic signal.h */
/* $OpenLDAP$ */
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
*
* Copyright 1998-2022 The OpenLDAP Foundation.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted only as authorized by the OpenLDAP
* Public License.
*
* A copy of this license is available in file LICENSE in the
* top-level directory of the distribution or, alternatively, at
* <http://www.OpenLDAP.org/license.html>.
*/
#ifndef _AC_SIGNAL_H
#define _AC_SIGNAL_H
#include <signal.h>
#undef SIGNAL
#if defined( HAVE_SIGACTION )
#define SIGNAL lutil_sigaction
typedef void (*lutil_sig_t)(int);
LDAP_LUTIL_F(lutil_sig_t) lutil_sigaction( int sig, lutil_sig_t func );
#define SIGNAL_REINSTALL(sig,act) (void)0
#elif defined( HAVE_SIGSET )
#define SIGNAL sigset
#define SIGNAL_REINSTALL sigset
#else
#define SIGNAL signal
#define SIGNAL_REINSTALL signal
#endif
#if !defined( LDAP_SIGUSR1 ) || !defined( LDAP_SIGUSR2 )
#undef LDAP_SIGUSR1
#undef LDAP_SIGUSR2
# if defined(WINNT) || defined(_WINNT) || defined(_WIN32)
# define LDAP_SIGUSR1 SIGILL
# define LDAP_SIGUSR2 SIGTERM
# elif !defined(HAVE_LINUX_THREADS)
# define LDAP_SIGUSR1 SIGUSR1
# define LDAP_SIGUSR2 SIGUSR2
# else
/*
* Some versions of LinuxThreads unfortunately uses the only
* two signals reserved for user applications. This forces
* OpenLDAP to use other signals reserved for other uses.
*/
# if defined( SIGSTKFLT )
# define LDAP_SIGUSR1 SIGSTKFLT
# elif defined ( SIGSYS )
# define LDAP_SIGUSR1 SIGSYS
# endif
# if defined( SIGUNUSED )
# define LDAP_SIGUSR2 SIGUNUSED
# elif defined ( SIGINFO )
# define LDAP_SIGUSR2 SIGINFO
# elif defined ( SIGEMT )
# define LDAP_SIGUSR2 SIGEMT
# endif
# endif
#endif
#ifndef LDAP_SIGCHLD
#ifdef SIGCHLD
#define LDAP_SIGCHLD SIGCHLD
#elif SIGCLD
#define LDAP_SIGCHLD SIGCLD
#endif
#endif
#endif /* _AC_SIGNAL_H */
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