135 lines
6.5 KiB
C
135 lines
6.5 KiB
C
|
/**************************************************************************/
|
||
|
|
/* */
|
||
|
|
/* Copyright (c) Microsoft Corporation. All rights reserved. */
|
||
|
|
/* */
|
||
|
|
/* This software is licensed under the Microsoft Software License */
|
||
|
|
/* Terms for Microsoft Azure RTOS. Full text of the license can be */
|
||
|
|
/* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */
|
||
|
|
/* and in the root directory of this software. */
|
||
|
|
/* */
|
||
|
|
/**************************************************************************/
|
||
|
|
|
||
|
|
|
||
|
|
/**************************************************************************/
|
||
|
|
/**************************************************************************/
|
||
|
|
/** */
|
||
|
|
/** ThreadX Component */
|
||
|
|
/** */
|
||
|
|
/** Timer */
|
||
|
|
/** */
|
||
|
|
/**************************************************************************/
|
||
|
|
/**************************************************************************/
|
||
|
|
|
||
|
|
#define TX_SOURCE_CODE
|
||
|
|
|
||
|
|
|
||
|
|
/* Include necessary system files. */
|
||
|
|
|
||
|
|
#include "tx_api.h"
|
||
|
|
#include "tx_timer.h"
|
||
|
|
|
||
|
|
|
||
|
|
/**************************************************************************/
|
||
|
|
/* */
|
||
|
|
/* FUNCTION RELEASE */
|
||
|
|
/* */
|
||
|
|
/* _tx_timer_system_deactivate PORTABLE C */
|
||
|
|
/* 6.1 */
|
||
|
|
/* AUTHOR */
|
||
|
|
/* */
|
||
|
|
/* William E. Lamie, Microsoft Corporation */
|
||
|
|
/* */
|
||
|
|
/* DESCRIPTION */
|
||
|
|
/* */
|
||
|
|
/* This function deactivates, or removes the timer from the active */
|
||
|
|
/* timer expiration list. If the timer is already deactivated, this */
|
||
|
|
/* function just returns. */
|
||
|
|
/* */
|
||
|
|
/* INPUT */
|
||
|
|
/* */
|
||
|
|
/* timer_ptr Pointer to timer control block */
|
||
|
|
/* */
|
||
|
|
/* OUTPUT */
|
||
|
|
/* */
|
||
|
|
/* TX_SUCCESS Always returns success */
|
||
|
|
/* */
|
||
|
|
/* CALLS */
|
||
|
|
/* */
|
||
|
|
/* None */
|
||
|
|
/* */
|
||
|
|
/* CALLED BY */
|
||
|
|
/* */
|
||
|
|
/* _tx_thread_system_resume Thread resume function */
|
||
|
|
/* _tx_timer_thread_entry Timer thread processing */
|
||
|
|
/* */
|
||
|
|
/* RELEASE HISTORY */
|
||
|
|
/* */
|
||
|
|
/* DATE NAME DESCRIPTION */
|
||
|
|
/* */
|
||
|
|
/* 05-19-2020 William E. Lamie Initial Version 6.0 */
|
||
|
|
/* 09-30-2020 Yuxin Zhou Modified comment(s), */
|
||
|
|
/* resulting in version 6.1 */
|
||
|
|
/* */
|
||
|
|
/**************************************************************************/
|
||
|
|
VOID _tx_timer_system_deactivate(TX_TIMER_INTERNAL *timer_ptr)
|
||
|
|
{
|
||
|
|
|
||
|
|
TX_TIMER_INTERNAL **list_head;
|
||
|
|
TX_TIMER_INTERNAL *next_timer;
|
||
|
|
TX_TIMER_INTERNAL *previous_timer;
|
||
|
|
|
||
|
|
|
||
|
|
/* Pickup the list head pointer. */
|
||
|
|
list_head = timer_ptr -> tx_timer_internal_list_head;
|
||
|
|
|
||
|
|
/* Determine if the timer still needs deactivation. */
|
||
|
|
if (list_head != TX_NULL)
|
||
|
|
{
|
||
|
|
|
||
|
|
/* Deactivate the timer. */
|
||
|
|
|
||
|
|
/* Pickup the next active timer. */
|
||
|
|
next_timer = timer_ptr -> tx_timer_internal_active_next;
|
||
|
|
|
||
|
|
/* See if this is the only timer in the list. */
|
||
|
|
if (timer_ptr == next_timer)
|
||
|
|
{
|
||
|
|
|
||
|
|
/* Yes, the only timer on the list. */
|
||
|
|
|
||
|
|
/* Determine if the head pointer needs to be updated. */
|
||
|
|
if (*(list_head) == timer_ptr)
|
||
|
|
{
|
||
|
|
|
||
|
|
/* Update the head pointer. */
|
||
|
|
*(list_head) = TX_NULL;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
|
||
|
|
/* At least one more timer is on the same expiration list. */
|
||
|
|
|
||
|
|
/* Update the links of the adjacent timers. */
|
||
|
|
previous_timer = timer_ptr -> tx_timer_internal_active_previous;
|
||
|
|
next_timer -> tx_timer_internal_active_previous = previous_timer;
|
||
|
|
previous_timer -> tx_timer_internal_active_next = next_timer;
|
||
|
|
|
||
|
|
/* Determine if the head pointer needs to be updated. */
|
||
|
|
if (*(list_head) == timer_ptr)
|
||
|
|
{
|
||
|
|
|
||
|
|
/* Update the next timer in the list with the list head pointer. */
|
||
|
|
next_timer -> tx_timer_internal_list_head = list_head;
|
||
|
|
|
||
|
|
/* Update the head pointer. */
|
||
|
|
*(list_head) = next_timer;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Clear the timer's list head pointer. */
|
||
|
|
timer_ptr -> tx_timer_internal_list_head = TX_NULL;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|