diff options
Diffstat (limited to 'nuttx/sched/sig_cleanup.c')
-rw-r--r-- | nuttx/sched/sig_cleanup.c | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/nuttx/sched/sig_cleanup.c b/nuttx/sched/sig_cleanup.c new file mode 100644 index 000000000..4dcc04f8b --- /dev/null +++ b/nuttx/sched/sig_cleanup.c @@ -0,0 +1,118 @@ +/************************************************************************ + * sched/sig_cleanup.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 <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_cleanup + * + * Description: + * Deallocate all signal-related lists in a TCB. This function is + * called only at task deletion time. The caller is expected to have + * assured the critical section necessary to perform this action. + * + ************************************************************************/ + +void sig_cleanup(FAR _TCB *stcb) +{ + FAR sigactq_t *sigact; + FAR sigq_t *sigq; + FAR sigpendq_t *sigpend; + + /* Deallocate all entries in the list of signal actions */ + + while ((sigact = (FAR sigactq_t*)sq_remfirst(&stcb->sigactionq)) != NULL) + { + sig_releaseaction(sigact); + } + + /* Deallocate all entries in the list of pending signals */ + + while ((sigpend = (FAR sigpendq_t*)sq_remfirst(&stcb->sigpendingq)) != NULL) + { + sig_releasependingsignal(sigpend); + } + + /* Deallocate all entries in the list of pending signal actions */ + + while ((sigq = (FAR sigq_t*)sq_remfirst(&stcb->sigpendactionq)) != NULL) + { + sig_releasependingsigaction(sigq); + } + + /* Deallocate all entries in the list of posted signal actions */ + + while ((sigq = (FAR sigq_t*)sq_remfirst(&stcb->sigpostedq)) != NULL) + { + sig_releasependingsigaction(sigq); + } + + /* Misc. signal-related clean-up */ + + stcb->sigprocmask = ALL_SIGNAL_SET; + stcb->sigwaitmask = NULL_SIGNAL_SET; +} |