include/posix/signal.h

   1 /*
   2  * Copyright (C) 2006 Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>.
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License as
   6  * published by the Free Software Foundation; either version 2 of the
   7  * License, or (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  17  */
  18
  19 #ifndef _XENO_POSIX_SIGNAL_H
  20 #define _XENO_POSIX_SIGNAL_H
  21
  22 #if defined(__KERNEL__) || defined(__XENO_SIM__)
  23
  24 #include <nucleus/xenomai.h>
  25
  26 #ifdef __KERNEL__
  27 #include <linux/signal.h>
  28
  29 /* These are not defined in kernel-space headers. */
  30 #define sa_sigaction sa_handler
  31 typedef void (*sighandler_t) (int sig);
  32 typedef unsigned long sig_atomic_t;
  33 #endif /* __KERNEL__ */
  34
  35 #ifdef __XENO_SIM__
  36 #include <posix_overrides.h>
  37 #endif /* __XENO_SIM__ */
  38
  39 #undef sigemptyset
  40 #undef sigfillset
  41 #undef sigaddset
  42 #undef sigdelset
  43 #undef sigismember
  44 #undef sigaction
  45 #undef sigqueue
  46 #undef SIGRTMIN
  47 #undef SIGRTMAX
  48
  49 #define sigaction(sig, action, old) pse51_sigaction(sig, action, old)
  50 #define sigemptyset pse51_sigemptyset
  51 #define sigfillset pse51_sigfillset
  52 #define sigaddset pse51_sigaddset
  53 #define sigdelset pse51_sigdelset
  54 #define sigismember pse51_sigismember
  55
  56 #define SIGRTMIN 33
  57 #define SIGRTMAX 64
  58
  59 struct pse51_thread;
  60
  61 #ifdef __cplusplus
  62 extern "C" {
  63 #endif
  64
  65 int sigemptyset(sigset_t *set);
  66
  67 int sigfillset(sigset_t *set);
  68
  69 int sigaddset(sigset_t *set,
  70               int signum);
  71
  72 int sigdelset(sigset_t *set,
  73               int signum);
  74
  75 int sigismember(const sigset_t *set,
  76                 int signum);
  77
  78 int pthread_kill(struct pse51_thread *thread,
  79                  int sig);
  80
  81 int pthread_sigmask(int how,
  82                     const sigset_t *set,
  83                     sigset_t *oset);
  84
  85 int sigaction(int sig,
  86               const struct sigaction *action,
  87               struct sigaction *old);
  88
  89 int sigpending(sigset_t *set);
  90
  91 int sigwait(const sigset_t *set,
  92             int *sig);
  93
  94 /* Real-time signals. */
  95 int sigwaitinfo(const sigset_t *__restrict__ set,
  96                 siginfo_t *__restrict__ info);
  97
  98 int sigtimedwait(const sigset_t *__restrict__ user_set,
  99                  siginfo_t *__restrict__ info,
 100                  const struct timespec *__restrict__ timeout);
 101
 102 int pthread_sigqueue_np (struct pse51_thread *thread, int sig, union sigval value);
 103
 104 #ifdef __cplusplus
 105 }
 106 #endif
 107
 108 #else /* !(__KERNEL__ || __XENO_SIM__) */
 109
 110 #pragma GCC system_header
 111
 112 #include_next <signal.h>
 113 /* In case signal.h is included for a side effect of an __need* macro, include
 114    it a second time to get all definitions. */
 115 #include_next <signal.h>
 116
 117 #endif /* !(__KERNEL__ || __XENO_SIM__) */
 118
 119 /*
 120  * Those are pseudo-signals only available with pthread_kill() to
 121  * suspend/resume/unblock threads synchronously via the low-level
 122  * nucleus interface. Can't block them, queue them, or even set them
 123  * in a sigset. Those are nasty, strictly anti-POSIX things; we do
 124  * provide them nevertheless only because we are mean people doing
 125  * harmful code for no valid reason. Can't go against your nature,
 126  * right?  Nah... (this said, don't blame us for POSIX, we are not
 127  * _that_ mean).
 128  */
 129 #define SIGSUSP (SIGRTMAX + 1)
 130 #define SIGRESM (SIGRTMAX + 2)
 131 #define SIGRELS (SIGRTMAX + 3)
 132
 133 #endif /* _XENO_POSIX_SIGNAL_H */