/************************************************************************ * sched/signal/sig_removependingsignal.c * * Copyright (C) 2007, 2009, 2013-2014 Gregory Nutt. All rights reserved. * Author: Gregory Nutt * * 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. Neither the name NuttX 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 COPYRIGHT HOLDERS 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 * COPYRIGHT OWNER 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. * ************************************************************************/ /************************************************************************ * Included Files ************************************************************************/ #include #include #include #include #include #include #include #include #include #include #include "signal/signal.h" /************************************************************************ * Definitions ************************************************************************/ /************************************************************************ * Private Type Declarations ************************************************************************/ /************************************************************************ * Global Variables ************************************************************************/ /************************************************************************ * Private Variables ************************************************************************/ /************************************************************************ * Private Functions ************************************************************************/ /************************************************************************ * Public Functions ************************************************************************/ /************************************************************************ * Name: sig_removependingsignal * * Description: * Remove the specified signal from the signal pending list * ************************************************************************/ FAR sigpendq_t *sig_removependingsignal(FAR struct tcb_s *stcb, int signo) { FAR struct task_group_s *group = stcb->group; FAR sigpendq_t *currsig; FAR sigpendq_t *prevsig; irqstate_t saved_state; DEBUGASSERT(group); saved_state = irqsave(); for (prevsig = NULL, currsig = (FAR sigpendq_t*)group->sigpendingq.head; (currsig && currsig->info.si_signo != signo); prevsig = currsig, currsig = currsig->flink); if (currsig) { if (prevsig) { sq_remafter((FAR sq_entry_t*)prevsig, &group->sigpendingq); } else { sq_remfirst(&group->sigpendingq); } } irqrestore(saved_state); return currsig; }