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Diffstat (limited to 'nuttx/sched/task_restart.c')
| -rw-r--r-- | nuttx/sched/task_restart.c | 184 |
1 files changed, 0 insertions, 184 deletions
diff --git a/nuttx/sched/task_restart.c b/nuttx/sched/task_restart.c deleted file mode 100644 index 6d9b84917..000000000 --- a/nuttx/sched/task_restart.c +++ /dev/null @@ -1,184 +0,0 @@ -/**************************************************************************** - * sched/task_restart.c - * - * Copyright (C) 2007, 2009, 2012 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 <sys/types.h> -#include <sched.h> -#include <nuttx/arch.h> -#include "os_internal.h" -#include "sig_internal.h" - -/**************************************************************************** - * Definitions - ****************************************************************************/ - -/**************************************************************************** - * Private Type Declarations - ****************************************************************************/ - -/**************************************************************************** - * Global Variables - ****************************************************************************/ - -/**************************************************************************** - * Private Variables - ****************************************************************************/ - -/**************************************************************************** - * Private Function Prototypes - ****************************************************************************/ - -/**************************************************************************** - * Private Functions - ****************************************************************************/ - -/**************************************************************************** - * Public Functions - ****************************************************************************/ - -/**************************************************************************** - * Name: task_restart - * - * Description: - * This function "restarts" a task. The task is first terminated and then - * reinitialized with same ID, priority, original entry point, stack size, - * and parameters it had when it was first started. - * - * Inputs: - * pid - The task ID of the task to delete. An ID of zero signifies the - * calling task. - * - * Return Value: - * OK on sucess; ERROR on failure. - * - * This function can fail if: - * (1) A pid of zero or the pid of the calling task is provided - * (functionality not implemented) - * (2) The pid is not associated with any task known to the system. - * - ****************************************************************************/ - -int task_restart(pid_t pid) -{ - FAR _TCB *rtcb; - FAR _TCB *tcb; - int status; - irqstate_t state; - - /* Make sure this task does not become ready-to-run while - * we are futzing with its TCB - */ - - sched_lock(); - - /* Check if the task to restart is the calling task */ - - rtcb = (FAR _TCB*)g_readytorun.head; - if ((pid == 0) || (pid == rtcb->pid)) - { - /* Not implemented */ - - return ERROR; - } - - /* We are restarting some other task than ourselves */ - - else - { - /* Find for the TCB associated with matching pid */ - - tcb = sched_gettcb(pid); - if (!tcb) - { - /* There is no TCB with this pid */ - - return ERROR; - } - - /* Remove the TCB from whatever list it is in. At this point, the - * TCB should no longer be accessible to the system - */ - - state = irqsave(); - dq_rem((FAR dq_entry_t*)tcb, (dq_queue_t*)g_tasklisttable[tcb->task_state].list); - tcb->task_state = TSTATE_TASK_INVALID; - irqrestore(state); - - /* Deallocate anything left in the TCB's queues */ - - sig_cleanup(tcb); /* Deallocate Signal lists */ - - /* Reset the current task priority */ - - tcb->sched_priority = tcb->init_priority; - - /* Reset the base task priority and the number of pending reprioritizations */ - -#ifdef CONFIG_PRIORITY_INHERITANCE - tcb->base_priority = tcb->init_priority; -# if CONFIG_SEM_NNESTPRIO > 0 - tcb->npend_reprio = 0; -# endif -#endif - - /* Re-initialize the processor-specific portion of the TCB - * This will reset the entry point and the start-up parameters - */ - - up_initial_state(tcb); - - /* Add the task to the inactive task list */ - - dq_addfirst((FAR dq_entry_t*)tcb, (dq_queue_t*)&g_inactivetasks); - tcb->task_state = TSTATE_TASK_INACTIVE; - - /* Activate the task */ - - status = task_activate(tcb); - if (status != OK) - { - dq_rem((FAR dq_entry_t*)tcb, (dq_queue_t*)&g_inactivetasks); - sched_releasetcb(tcb); - return ERROR; - } - } - - sched_unlock(); - return OK; -} |