diff options
Diffstat (limited to 'nuttx/arch/c5471/src/up_unblocktask.c')
| -rw-r--r-- | nuttx/arch/c5471/src/up_unblocktask.c | 162 |
1 files changed, 0 insertions, 162 deletions
diff --git a/nuttx/arch/c5471/src/up_unblocktask.c b/nuttx/arch/c5471/src/up_unblocktask.c deleted file mode 100644 index b12f8a98c..000000000 --- a/nuttx/arch/c5471/src/up_unblocktask.c +++ /dev/null @@ -1,162 +0,0 @@ -/************************************************************ - * up_unblocktask.c - * - * Copyright (C) 2007 Gregory Nutt. All rights reserved. - * Author: Gregory Nutt <spudmonkey@racsa.co.cr> - * - * 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 Gregory Nutt 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 <debug.h> -#include <nuttx/arch.h> -#include "clock_internal.h" -#include "os_internal.h" -#include "up_internal.h" - -/************************************************************ - * Private Definitions - ************************************************************/ - -/************************************************************ - * Private Data - ************************************************************/ - -/************************************************************ - * Private Funtions - ************************************************************/ - -/************************************************************ - * Public Funtions - ************************************************************/ - -/************************************************************ - * Name: up_unblock_task - * - * Description: - * A task is currently in an inactive task list - * but has been prepped to execute. Move the TCB to the - * ready-to-run list, restore its context, and start execution. - * - * Inputs: - * tcb: Refers to the tcb to be unblocked. This tcb is - * in one of the waiting tasks lists. It must be moved to - * the ready-to-run list and, if it is the highest priority - * ready to run taks, executed. - * - ************************************************************/ - -void up_unblock_task(_TCB *tcb) -{ - /* Verify that the context switch can be performed */ - - if ((tcb->task_state < FIRST_BLOCKED_STATE) || - (tcb->task_state > LAST_BLOCKED_STATE)) - { - PANIC(OSERR_BADUNBLOCKSTATE); - } - else - { - _TCB *rtcb = (_TCB*)g_readytorun.head; - - lldbg("Unblocking TCB=%p\n", tcb); - - /* Remove the task from the blocked task list */ - - sched_removeblocked(tcb); - - /* Reset its timeslice. This is only meaningful for round - * robin tasks but it doesn't hurt to do it for all tasks - */ - -#if CONFIG_RR_INTERVAL > 0 - tcb->timeslice = CONFIG_RR_INTERVAL / MSEC_PER_TICK; -#endif - - /* Add the task in the correct location in the prioritized - * g_readytorun task list - */ - - if (sched_addreadytorun(tcb)) - { - /* The currently active task has changed! We need to do - * a context switch to the new task. - * - * Are we in an interrupt handler? - */ - - if (current_regs) - { - /* Yes, then we have to do things differently. - * Just copy the current_regs into the OLD rtcb. - */ - - up_copystate(rtcb->xcp.regs, current_regs); - - /* Restore the exception context of the rtcb at the (new) head - * of the g_readytorun task list. - */ - - rtcb = (_TCB*)g_readytorun.head; - lldbg("New Active Task TCB=%p\n", rtcb); - - /* Then switch contexts */ - - up_copystate(current_regs, rtcb->xcp.regs); - } - - /* We are not in an interrupt handler. Copy the user C context - * into the TCB of the task that was previously active. if - * up_saveusercontext returns a non-zero value, then this is really the - * previously running task restarting! - */ - - else if (!up_saveusercontext(rtcb->xcp.regs)) - { - /* Restore the exception context of the new task that is ready to - * run (probably tcb). This is the new rtcb at the head of the - * g_readytorun task list. - */ - - rtcb = (_TCB*)g_readytorun.head; - lldbg("New Active Task TCB=%p\n", rtcb); - - /* Then switch contexts */ - - up_fullcontextrestore(rtcb->xcp.regs); - } - } - } -} |