mirror of https://github.com/rusefi/ChibiOS.git
118 lines
3.8 KiB
C
118 lines
3.8 KiB
C
/*
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ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
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2011,2012,2013 Giovanni Di Sirio.
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This file is part of ChibiOS/RT.
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ChibiOS/RT is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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ChibiOS/RT is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* @file osal.c
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* @brief OSAL module code.
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*
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* @addtogroup OSAL
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* @{
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*/
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#include "osal.h"
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/*===========================================================================*/
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/* Module local definitions. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Module exported variables. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Module local types. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Module local variables. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Module local functions. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Module exported functions. */
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/*===========================================================================*/
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/**
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* @brief Dequeues and wakes up one thread from the queue, if any.
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*
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* @param[in] tqp pointer to the threads queue object
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* @param[in] msg the message code
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*
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* @iclass
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*/
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void osalThreadDequeueNextI(threads_queue_t *tqp, msg_t msg) {
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semaphore_t *sp = &tqp->sem;
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if (chSemGetCounterI(&tqp->sem) < 0) {
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thread_reference_t tr = nil.threads;
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while (true) {
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/* Is this thread waiting on this semaphore?*/
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if (tr->u1.semp == sp) {
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chDbgAssert(NIL_THD_IS_WTSEM(tr), "not waiting");
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chSchReadyI(tr, msg);
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return;
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}
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tr++;
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chDbgAssert(tr < &nil.threads[NIL_CFG_NUM_THREADS],
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"pointer out of range");
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}
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}
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}
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/**
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* @brief Dequeues and wakes up all threads from the queue.
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*
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* @param[in] tqp pointer to the threads queue object
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* @param[in] msg the message code
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*
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* @iclass
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*/
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void osalThreadDequeueAllI(threads_queue_t *tqp, msg_t msg) {
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semaphore_t *sp = &tqp->sem;
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thread_reference_t tr;
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cnt_t cnt;
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cnt = sp->cnt;
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sp->cnt = 0;
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tr = nil.threads;
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while (cnt < 0) {
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/* Is this thread waiting on this semaphore?*/
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if (tr->u1.semp == sp) {
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chDbgAssert(NIL_THD_IS_WTSEM(tr), "not waiting");
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cnt++;
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chSchReadyI(tr, msg);
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}
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tr++;
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chDbgAssert(tr < &nil.threads[NIL_CFG_NUM_THREADS],
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"pointer out of range");
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}
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}
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/** @} */
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