2015-10-03 01:43:18 +02:00
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/****************************************************************************
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2014-08-08 20:55:02 +02:00
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* sched/signal/sig_initialize.c
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2007-02-18 00:21:28 +01:00
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*
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2021-02-08 16:33:58 +01:00
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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2007-02-18 00:21:28 +01:00
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*
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2021-02-08 16:33:58 +01:00
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* http://www.apache.org/licenses/LICENSE-2.0
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2007-02-18 00:21:28 +01:00
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*
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2021-02-08 16:33:58 +01:00
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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2007-02-18 00:21:28 +01:00
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*
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2015-10-03 01:43:18 +02:00
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****************************************************************************/
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2007-02-18 00:21:28 +01:00
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2015-10-03 01:43:18 +02:00
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/****************************************************************************
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2007-02-18 00:21:28 +01:00
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* Included Files
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2015-10-03 01:43:18 +02:00
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****************************************************************************/
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2007-02-18 00:21:28 +01:00
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2009-12-14 19:39:29 +01:00
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#include <nuttx/config.h>
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#include <stdint.h>
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2019-09-23 15:49:21 +02:00
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#include <assert.h>
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2007-02-18 00:21:28 +01:00
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#include <nuttx/kmalloc.h>
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2022-09-25 17:08:38 +02:00
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#include <nuttx/queue.h>
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2023-02-22 04:08:22 +01:00
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#include <nuttx/trace.h>
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2009-12-14 19:39:29 +01:00
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2014-08-08 20:44:44 +02:00
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#include "signal/signal.h"
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2007-02-18 00:21:28 +01:00
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2015-10-03 01:43:18 +02:00
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/****************************************************************************
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2015-10-03 00:30:35 +02:00
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* Public Data
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2015-10-03 01:43:18 +02:00
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****************************************************************************/
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2007-02-18 00:21:28 +01:00
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2012-07-14 21:30:31 +02:00
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/* The g_sigfreeaction data structure is a list of available signal
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* action structures.
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*/
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2007-02-18 00:21:28 +01:00
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sq_queue_t g_sigfreeaction;
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2012-07-14 21:30:31 +02:00
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/* The g_sigpendingaction data structure is a list of available pending
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* signal action structures.
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2007-02-18 00:21:28 +01:00
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*/
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sq_queue_t g_sigpendingaction;
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2012-07-14 21:30:31 +02:00
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/* The g_sigpendingirqaction is a list of available pending signal actions
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* that are reserved for use by interrupt handlers.
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2007-02-18 00:21:28 +01:00
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*/
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sq_queue_t g_sigpendingirqaction;
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2012-07-14 21:30:31 +02:00
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/* The g_sigpendingsignal data structure is a list of available pending
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* signal structures.
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2007-02-18 00:21:28 +01:00
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*/
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sq_queue_t g_sigpendingsignal;
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2012-07-14 21:30:31 +02:00
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/* The g_sigpendingirqsignal data structure is a list of available
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* pending signal structures that are reserved for use by interrupt
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* handlers.
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2007-02-18 00:21:28 +01:00
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*/
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sq_queue_t g_sigpendingirqsignal;
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2015-10-03 01:43:18 +02:00
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/****************************************************************************
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2007-02-18 00:21:28 +01:00
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* Private Functions
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2015-10-03 01:43:18 +02:00
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****************************************************************************/
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2007-02-18 00:21:28 +01:00
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2015-10-03 01:43:18 +02:00
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/****************************************************************************
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2024-03-22 08:57:01 +01:00
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* Name: nxsig_init_block
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2007-02-18 00:21:28 +01:00
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*
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* Description:
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2024-03-22 08:57:01 +01:00
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* Initialize a block of pending signal actions and place them
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2007-02-18 00:21:28 +01:00
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* on the free list.
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*
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2015-10-03 01:43:18 +02:00
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****************************************************************************/
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2007-02-18 00:21:28 +01:00
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2024-03-22 08:57:01 +01:00
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static void *nxsig_init_block(sq_queue_t *siglist, FAR sigq_t *sigq,
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uint16_t nsigs, uint8_t sigtype)
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2007-02-18 00:21:28 +01:00
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{
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2015-10-08 03:59:14 +02:00
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int i;
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2007-02-18 00:21:28 +01:00
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2024-03-22 08:57:01 +01:00
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for (i = 0; i < nsigs; i++)
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2007-02-18 00:21:28 +01:00
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{
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2024-03-22 08:57:01 +01:00
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sigq->type = sigtype;
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sq_addlast((FAR sq_entry_t *)sigq++, siglist);
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2007-02-18 00:21:28 +01:00
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}
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2024-03-22 08:57:01 +01:00
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return sigq;
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2007-02-18 00:21:28 +01:00
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}
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2015-10-03 01:43:18 +02:00
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/****************************************************************************
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2024-03-22 08:57:01 +01:00
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* Name: nxsig_init_pendingsignalblock
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2007-02-18 00:21:28 +01:00
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*
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* Description:
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2024-03-22 08:57:01 +01:00
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* Initialize a block of pending signal structures and place them on
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2012-07-14 21:30:31 +02:00
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* the free list.
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*
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2015-10-03 01:43:18 +02:00
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****************************************************************************/
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2007-02-18 00:21:28 +01:00
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2024-03-22 08:57:01 +01:00
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static void *nxsig_init_pendingsignalblock(FAR sq_queue_t *siglist,
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FAR sigpendq_t *sigpend,
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uint16_t nsigs,
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uint8_t sigtype)
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2007-02-18 00:21:28 +01:00
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{
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int i;
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2024-03-22 08:57:01 +01:00
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for (i = 0; i < nsigs; i++)
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2007-02-18 00:21:28 +01:00
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{
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2024-03-22 08:57:01 +01:00
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sigpend->type = sigtype;
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sq_addlast((FAR sq_entry_t *)sigpend++, siglist);
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2007-02-18 00:21:28 +01:00
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}
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2024-03-22 08:57:01 +01:00
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return sigpend;
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2007-02-18 00:21:28 +01:00
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}
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2015-10-03 01:43:18 +02:00
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/****************************************************************************
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2007-02-18 00:21:28 +01:00
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* Public Functions
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2015-10-03 01:43:18 +02:00
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****************************************************************************/
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2007-02-18 00:21:28 +01:00
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2015-10-03 01:43:18 +02:00
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/****************************************************************************
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This change renames all internal, private NuttX signal-related functions to use the prefix nxsig_ so that they cannot be confused with application interfaces that begin, primarily, with sig_
This is analogous to similar renaming that was done previously for semaphores.
Squashed commit of the following:
sched/signal: Fix a few compile warnings introduced by naming changes.
sched/signal: Rename all private, internal signl functions to use the nxsig_ prefix.
sched/signal: Rename sig_removependingsignal, sig_unmaskpendingsignal, and sig_mqnotempty to nxsig_remove_pendingsignal, nxsig_unmask_pendingsignal, and nxsig_mqnotempty to make it clear that these are OS internal interfaces.
sched/signal: Rename sig_findaction and sig_lowest to nxsig_find_action and nxsig_lowest to make it clear that these are OS internal interfaces.
sched/signal: Rename sig_allocatepingsigaction and sig_deliver to nxsig_alloc_pendingsigaction and nxsig_deliver to make it clear that these are OS internal interfaces.
sched/signal: Rename sig_cleanup, sig_release, sig_releasependingaction, and sig_releasependingsignal to nxsig_cleanup, nxsig_release, nxsig_release_pendingaction, and nxsig_release_pendingsignal to make it clear that these are OS internal interfaces.
sched/signal: Rename sig_tcbdispatch and sig_dispatch to nxsig_tcbdispatch and nxsig_dispatch to make it clear that these are OS internal interfaces.
sched/signal: Rename sig_releaseaction and sig_pendingset to nxsig_release_action and nxsig_pendingset to make it clear that these are OS internal interfaces.
sched/signal: Rename sig_initialize and sig_allocateactionblock to nxsig_initialize and nxsig_alloc_actionblock to make it clear that these are OS internal interfaces.
2017-10-05 21:25:25 +02:00
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* Name: nxsig_initialize
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2007-02-18 00:21:28 +01:00
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*
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* Description:
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2012-07-14 21:30:31 +02:00
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* Perform one-time power-up initialization
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*
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2015-10-03 01:43:18 +02:00
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****************************************************************************/
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2007-02-18 00:21:28 +01:00
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This change renames all internal, private NuttX signal-related functions to use the prefix nxsig_ so that they cannot be confused with application interfaces that begin, primarily, with sig_
This is analogous to similar renaming that was done previously for semaphores.
Squashed commit of the following:
sched/signal: Fix a few compile warnings introduced by naming changes.
sched/signal: Rename all private, internal signl functions to use the nxsig_ prefix.
sched/signal: Rename sig_removependingsignal, sig_unmaskpendingsignal, and sig_mqnotempty to nxsig_remove_pendingsignal, nxsig_unmask_pendingsignal, and nxsig_mqnotempty to make it clear that these are OS internal interfaces.
sched/signal: Rename sig_findaction and sig_lowest to nxsig_find_action and nxsig_lowest to make it clear that these are OS internal interfaces.
sched/signal: Rename sig_allocatepingsigaction and sig_deliver to nxsig_alloc_pendingsigaction and nxsig_deliver to make it clear that these are OS internal interfaces.
sched/signal: Rename sig_cleanup, sig_release, sig_releasependingaction, and sig_releasependingsignal to nxsig_cleanup, nxsig_release, nxsig_release_pendingaction, and nxsig_release_pendingsignal to make it clear that these are OS internal interfaces.
sched/signal: Rename sig_tcbdispatch and sig_dispatch to nxsig_tcbdispatch and nxsig_dispatch to make it clear that these are OS internal interfaces.
sched/signal: Rename sig_releaseaction and sig_pendingset to nxsig_release_action and nxsig_pendingset to make it clear that these are OS internal interfaces.
sched/signal: Rename sig_initialize and sig_allocateactionblock to nxsig_initialize and nxsig_alloc_actionblock to make it clear that these are OS internal interfaces.
2017-10-05 21:25:25 +02:00
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void nxsig_initialize(void)
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2007-02-18 00:21:28 +01:00
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{
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2024-03-22 08:57:01 +01:00
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FAR void *sigpool;
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2023-02-22 04:08:22 +01:00
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sched_trace_begin();
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2007-02-18 00:21:28 +01:00
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/* Initialize free lists */
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sq_init(&g_sigfreeaction);
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sq_init(&g_sigpendingaction);
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sq_init(&g_sigpendingirqaction);
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sq_init(&g_sigpendingsignal);
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sq_init(&g_sigpendingirqsignal);
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/* Add a block of signal structures to each list */
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2012-07-14 21:30:31 +02:00
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2024-03-22 08:57:01 +01:00
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sigpool =
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kmm_malloc(sizeof(sigq_t) *
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(NUM_PENDING_ACTIONS + CONFIG_SIG_PREALLOC_IRQ_ACTIONS)
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+ sizeof(sigpendq_t) *
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(NUM_SIGNALS_PENDING + CONFIG_SIG_PREALLOC_IRQ_ACTIONS));
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DEBUGASSERT(sigpool != NULL);
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sigpool = nxsig_init_block(&g_sigpendingaction, sigpool,
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NUM_PENDING_ACTIONS, SIG_ALLOC_FIXED);
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sigpool = nxsig_init_block(&g_sigpendingirqaction, sigpool,
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CONFIG_SIG_PREALLOC_IRQ_ACTIONS,
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SIG_ALLOC_IRQ);
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sigpool = nxsig_init_pendingsignalblock(&g_sigpendingsignal, sigpool,
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NUM_SIGNALS_PENDING,
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SIG_ALLOC_FIXED);
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sigpool = nxsig_init_pendingsignalblock(&g_sigpendingirqsignal, sigpool,
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CONFIG_SIG_PREALLOC_IRQ_ACTIONS,
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SIG_ALLOC_IRQ);
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2023-02-22 04:08:22 +01:00
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sched_trace_end();
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2007-02-18 00:21:28 +01:00
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}
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