/* * File : signal.h * This file is part of RT-Thread RTOS * COPYRIGHT (C) 2017, RT-Thread Development Team * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program 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 General Public License for more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. * * Change Logs: * Date Author Notes * 2017/10/1 Bernard The first version */ #include #include #include #include "posix_signal.h" #define sig_valid(sig_no) (sig_no >= 0 && sig_no < RT_SIG_MAX) void (*signal(int sig, void (*func)(int))) (int) { return rt_signal_install(sig, func); } int sigprocmask (int how, const sigset_t *set, sigset_t *oset) { rt_base_t level; rt_thread_t tid; tid = rt_thread_self(); level = rt_hw_interrupt_disable(); if (oset) *oset = tid->sig_mask; if (set) { switch(how) { case SIG_BLOCK: tid->sig_mask |= *set; break; case SIG_UNBLOCK: tid->sig_mask &= ~*set; break; case SIG_SETMASK: tid->sig_mask = *set; break; default: break; } } rt_hw_interrupt_enable(level); return 0; } int sigaction(int signum, const struct sigaction *act, struct sigaction *oldact) { rt_sighandler_t old = RT_NULL; if (!sig_valid(signum)) return -RT_ERROR; if (act) old = rt_signal_install(signum, act->sa_handler); else { old = rt_signal_install(signum, RT_NULL); rt_signal_install(signum, old); } if (oldact) oldact->sa_handler = old; return 0; } int sigtimedwait(const sigset_t *set, siginfo_t *info, const struct timespec *timeout) { return 0; } int sigwait(const sigset_t *set, int *sig) { siginfo_t si; if (sigtimedwait(set, &si, 0) < 0) return -1; *sig = si.si_signo; return 0; } int sigwaitinfo(const sigset_t *set, siginfo_t *info) { return sigtimedwait(set, info, NULL); } int raise(int sig) { rt_thread_kill(rt_thread_self(), sig); return 0; }