signal.h

/*
 * Copyright (C) 2013 Philippe Gerum <rpm@xenomai.org>.
 *
 * This 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 of the License, or (at your option) any later version.
 *
 * This 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 this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
 */
#ifndef _MERCURY_BOILERPLATE_SIGNAL_H
#define _MERCURY_BOILERPLATE_SIGNAL_H

#include <signal.h>

#ifndef sigev_notify_thread_id
#define sigev_notify_thread_id   _sigev_un._tid
#endif

/* Generates reserved signal numbers for Boilerplate/Copperplate. */
#define __SIGRSVD(n)    (SIGRTMIN + 8 + (n))

#define SIGSUSP         __SIGRSVD(0)    /* Suspend request */
#define SIGRESM         __SIGRSVD(1)    /* Resume request */
#define SIGRELS         __SIGRSVD(2)    /* Syscall abort */
#define SIGRRB          __SIGRSVD(3)    /* Round-robin event */
#define SIGAGENT        __SIGRSVD(4)    /* Request to remote agent */
#define SIGPERIOD       __SIGRSVD(5)    /* Periodic signal */

/* Generates private signal numbers for clients, up to SIGRTMAX. */
#define __SIGPRIV(n)    __SIGRSVD(8 + (n))

#define SIGSAFE_LOCK_ENTRY(__safelock)                                  \
        do {                                                            \
                sigset_t __safeset, __oldsafeset;                       \
                sigemptyset(&__safeset);                                \
                sigaddset(&__safeset, SIGSUSP);                         \
                pthread_sigmask(SIG_BLOCK, &__safeset, &__oldsafeset);  \
                push_cleanup_lock(__safelock);                          \
                write_lock(__safelock);

#define SIGSAFE_LOCK_EXIT(__safelock)                                   \
                write_unlock(__safelock);                               \
                pop_cleanup_lock(&__safelock);                          \
                pthread_sigmask(SIG_SETMASK, &__oldsafeset, NULL);      \
        } while (0)

#endif /* _MERCURY_BOILERPLATE_SIGNAL_H */