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Diffstat (limited to 'nuttx/sched/sig_removependingsignal.c')
-rw-r--r-- | nuttx/sched/sig_removependingsignal.c | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/nuttx/sched/sig_removependingsignal.c b/nuttx/sched/sig_removependingsignal.c new file mode 100644 index 000000000..c82bf983b --- /dev/null +++ b/nuttx/sched/sig_removependingsignal.c @@ -0,0 +1,115 @@ +/************************************************************************ + * sched/sig_removependingsignal.c + * + * Copyright (C) 2007, 2009 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <gnutt@nuttx.org> + * + * 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 <nuttx/config.h> + +#include <unistd.h> +#include <signal.h> +#include <time.h> +#include <wdog.h> +#include <assert.h> +#include <debug.h> +#include <sched.h> + +#include <nuttx/kmalloc.h> +#include <nuttx/arch.h> + +#include "os_internal.h" +#include "sig_internal.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 _TCB *stcb, int signo) +{ + FAR sigpendq_t *currsig; + FAR sigpendq_t *prevsig; + irqstate_t saved_state; + + saved_state = irqsave(); + + for (prevsig = NULL, currsig = (FAR sigpendq_t*)stcb->sigpendingq.head; + (currsig && currsig->info.si_signo != signo); + prevsig = currsig, currsig = currsig->flink); + + if (currsig) + { + if (prevsig) + { + sq_remafter((FAR sq_entry_t*)prevsig, &stcb->sigpendingq); + } + else + { + sq_remfirst(&stcb->sigpendingq); + } + } + + irqrestore(saved_state); + + return currsig; +} |