From 5375bb5b86e266157ceceef08c367da711b8144e Mon Sep 17 00:00:00 2001 From: Lorenz Meier Date: Sat, 1 Jun 2013 01:04:32 +0200 Subject: Cleanup, WIP, needs a NuttX checkout to Firmware/NuttX now --- nuttx/sched/sem_waitirq.c | 145 ---------------------------------------------- 1 file changed, 145 deletions(-) delete mode 100644 nuttx/sched/sem_waitirq.c (limited to 'nuttx/sched/sem_waitirq.c') diff --git a/nuttx/sched/sem_waitirq.c b/nuttx/sched/sem_waitirq.c deleted file mode 100644 index 3d3af18de..000000000 --- a/nuttx/sched/sem_waitirq.c +++ /dev/null @@ -1,145 +0,0 @@ -/**************************************************************************** - * sched/sem_waitirq.c - * - * Copyright (C) 2007-2010 Gregory Nutt. All rights reserved. - * Author: Gregory Nutt - * - * 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 - -#include -#include -#include - -#include "sem_internal.h" - -/**************************************************************************** - * Definitions - ****************************************************************************/ - -/**************************************************************************** - * Private Type Declarations - ****************************************************************************/ - -/**************************************************************************** - * Global Variables - ****************************************************************************/ - -/**************************************************************************** - * Private Variables - ****************************************************************************/ - -/**************************************************************************** - * Private Functions - ****************************************************************************/ - -/**************************************************************************** - * Public Functions - ****************************************************************************/ - -/**************************************************************************** - * Name: sem_waitirq - * - * Description: - * This function is called when a signal is received by a task that is - * waiting on a semaphore. According to the POSIX spec, "...the calling - * thread shall not return from the call to [sem_wait] until it either - * locks the semaphore or the call is interrupted by a signal." - * - * Parameters: - * wtcb - A pointer to the TCB of the task that is waiting on a - * semphaphore, but has received a signal or timeout instead. - * errcode - EINTR if the semaphore wait was awakened by a signal; - * ETIMEDOUT if awakened by a timeout - * - * Return Value: - * None - * - * Assumptions: - * - ****************************************************************************/ - -void sem_waitirq(FAR _TCB *wtcb, int errcode) -{ - irqstate_t saved_state; - - /* Disable interrupts. This is necessary (unfortunately) because an - * interrupt handler may attempt to post the semaphore while we are - * doing this. - */ - - saved_state = irqsave(); - - /* It is possible that an interrupt/context switch beat us to the punch - * and already changed the task's state. - */ - - if (wtcb->task_state == TSTATE_WAIT_SEM) - { - sem_t *sem = wtcb->waitsem; - DEBUGASSERT(sem != NULL && sem->semcount < 0); - - /* Restore the correct priority of all threads that hold references - * to this semaphore. - */ - - sem_canceled(wtcb, sem); - - /* And increment the count on the semaphore. This releases the count - * that was taken by sem_post(). This count decremented the semaphore - * count to negative and caused the thread to be blocked in the first - * place. - */ - - sem->semcount++; - - /* Indicate that the semaphore wait is over. */ - - wtcb->waitsem = NULL; - - /* Mark the errno value for the thread. */ - - wtcb->pterrno = errcode; - - /* Restart the task. */ - - up_unblock_task(wtcb); - } - - /* Interrupts may now be enabled. */ - - irqrestore(saved_state); -} - -- cgit v1.2.3