diff options
Diffstat (limited to 'nuttx/sched/mq_waitirq.c')
| -rw-r--r-- | nuttx/sched/mq_waitirq.c | 172 |
1 files changed, 0 insertions, 172 deletions
diff --git a/nuttx/sched/mq_waitirq.c b/nuttx/sched/mq_waitirq.c deleted file mode 100644 index 94a15df3c..000000000 --- a/nuttx/sched/mq_waitirq.c +++ /dev/null @@ -1,172 +0,0 @@ -/**************************************************************************** - * sched/mq_waitirq.c - * - * Copyright (C) 2007-2009, 2011 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 <sched.h> -#include <errno.h> - -#include <nuttx/arch.h> -#include <nuttx/mqueue.h> - -#include "os_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 or a timeout is received by a - * task that is waiting on a message queue -- either for a queue to - * becoming not full (on mq_send) or not empty (on mq_receive). - * - * Parameters: - * wtcb - A pointer to the TCB of the task that is waiting on a message - * queue, but has received a signal instead. - * - * Return Value: - * None - * - * Assumptions: - * - ****************************************************************************/ - -void mq_waitirq(FAR _TCB *wtcb, int errcode) -{ - FAR msgq_t *msgq; - irqstate_t saved_state; - - /* Disable interrupts. This is necessary because an interrupt handler may - * attempt to send a message 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. NOTE: The operations within the if - * are safe because interrupts are always disabled with the msgwaitq, - * nwaitnotempty, and nwaitnotfull fields are modified. - */ - - if (wtcb->task_state == TSTATE_WAIT_MQNOTEMPTY || - wtcb->task_state == TSTATE_WAIT_MQNOTFULL) - { - /* Get the message queue associated with the waiter from the TCB */ - - msgq = wtcb->msgwaitq; -#ifdef CONFIG_DEBUG - if (!msgq) - { - /* In these states there must always be an associated message queue */ - - PANIC((uint32_t)OSERR_MQNOWAITER); - } -#endif - wtcb->msgwaitq = NULL; - - /* Decrement the count of waiters and cancel the wait */ - - if (wtcb->task_state == TSTATE_WAIT_MQNOTEMPTY) - { -#ifdef CONFIG_DEBUG - if (msgq->nwaitnotempty <= 0) - { - /* This state, there should be a positive, non-zero waiter - * count. - */ - - PANIC((uint32_t)OSERR_MQNONEMPTYCOUNT); - - } -#endif - msgq->nwaitnotempty--; - } - else - { -#ifdef CONFIG_DEBUG - if (msgq->nwaitnotfull <= 0) - { - /* This state, there should be a positive, non-zero waiter - * count. - */ - - PANIC((uint32_t)OSERR_MQNOTFULLCOUNT); - - } -#endif - msgq->nwaitnotfull--; - } - - /* 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); -} - |