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Diffstat (limited to 'nuttx/sched/sig_pending.c')
-rw-r--r-- | nuttx/sched/sig_pending.c | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/nuttx/sched/sig_pending.c b/nuttx/sched/sig_pending.c new file mode 100644 index 000000000..eaabbff6b --- /dev/null +++ b/nuttx/sched/sig_pending.c @@ -0,0 +1,130 @@ +/**************************************************************************** + * sched/sig_pending.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 <signal.h> +#include <sched.h> + +#include "os_internal.h" +#include "sig_internal.h" + +/**************************************************************************** + * Definitions + ****************************************************************************/ + +/**************************************************************************** + * Private Type Declarations + ****************************************************************************/ + +/**************************************************************************** + * Global Variables + ****************************************************************************/ + +/**************************************************************************** + * Private Variables + ****************************************************************************/ + +/**************************************************************************** + * Private Function Prototypes + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: sigpending + * + * Description: + * This function stores the returns the set of signals that are blocked + * for delivery and that are pending for the calling process in the space + * pointed to by set. + * + * Parameters: + * set - The location to return the pending signal set. + * + * Return Value: + * 0 (OK) or -1 (ERROR) + * + * Assumptions: + * + ****************************************************************************/ + +int sigpending(FAR sigset_t *set) +{ + FAR _TCB *rtcb = (FAR _TCB*)g_readytorun.head; + int ret = ERROR; + + if (set) + { + *set = sig_pendingset(rtcb); + ret = OK; + } + + return ret; +} + +/**************************************************************************** + * Name: sig_pendingset + * + * Description: + * Convert the list of pending signals into a signal set + * + ****************************************************************************/ + +sigset_t sig_pendingset(FAR _TCB *stcb) +{ + sigset_t sigpendset; + FAR sigpendq_t *sigpend; + irqstate_t saved_state; + + sigpendset = NULL_SIGNAL_SET; + + saved_state = irqsave(); + for (sigpend = (FAR sigpendq_t*)stcb->sigpendingq.head; + (sigpend); sigpend = sigpend->flink) + { + sigaddset(&sigpendset, sigpend->info.si_signo); + } + + irqrestore(saved_state); + + return sigpendset; +} |