diff options
Diffstat (limited to 'common/src/tx_timer_delete.c')
| -rw-r--r-- | common/src/tx_timer_delete.c | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/common/src/tx_timer_delete.c b/common/src/tx_timer_delete.c new file mode 100644 index 00000000..c5f444b0 --- /dev/null +++ b/common/src/tx_timer_delete.c @@ -0,0 +1,142 @@ +/**************************************************************************/ +/* */ +/* 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_trace.h" +#include "tx_timer.h" + + +/**************************************************************************/ +/* */ +/* FUNCTION RELEASE */ +/* */ +/* _tx_timer_delete PORTABLE C */ +/* 6.0 */ +/* AUTHOR */ +/* */ +/* William E. Lamie, Microsoft Corporation */ +/* */ +/* DESCRIPTION */ +/* */ +/* This function deletes the specified application timer. */ +/* */ +/* INPUT */ +/* */ +/* timer_ptr Pointer to timer control block */ +/* */ +/* OUTPUT */ +/* */ +/* TX_SUCCESS Successful completion status */ +/* */ +/* CALLS */ +/* */ +/* _tx_timer_system_deactivate Timer deactivation function */ +/* */ +/* CALLED BY */ +/* */ +/* Application Code */ +/* */ +/* RELEASE HISTORY */ +/* */ +/* DATE NAME DESCRIPTION */ +/* */ +/* 05-19-2020 William E. Lamie Initial Version 6.0 */ +/* */ +/**************************************************************************/ +UINT _tx_timer_delete(TX_TIMER *timer_ptr) +{ + +TX_INTERRUPT_SAVE_AREA + +TX_TIMER *next_timer; +TX_TIMER *previous_timer; + + + /* Disable interrupts to remove the timer from the created list. */ + TX_DISABLE + + /* Determine if the timer needs to be deactivated. */ + if (timer_ptr -> tx_timer_internal.tx_timer_internal_list_head != TX_NULL) + { + + /* Yes, deactivate the timer before it is deleted. */ + _tx_timer_system_deactivate(&(timer_ptr -> tx_timer_internal)); + } + + /* If trace is enabled, insert this event into the trace buffer. */ + TX_TRACE_IN_LINE_INSERT(TX_TRACE_TIMER_DELETE, timer_ptr, 0, 0, 0, TX_TRACE_TIMER_EVENTS) + + /* Optional timer delete extended processing. */ + TX_TIMER_DELETE_EXTENSION(timer_ptr) + + /* If trace is enabled, unregister this object. */ + TX_TRACE_OBJECT_UNREGISTER(timer_ptr) + + /* Log this kernel call. */ + TX_EL_TIMER_DELETE_INSERT + + /* Clear the timer ID to make it invalid. */ + timer_ptr -> tx_timer_id = TX_CLEAR_ID; + + /* Decrement the number of created timers. */ + _tx_timer_created_count--; + + /* See if the timer is the only one on the list. */ + if (_tx_timer_created_count == TX_EMPTY) + { + + /* Only created timer, just set the created list to NULL. */ + _tx_timer_created_ptr = TX_NULL; + } + else + { + + /* Link-up the neighbors. */ + next_timer = timer_ptr -> tx_timer_created_next; + previous_timer = timer_ptr -> tx_timer_created_previous; + next_timer -> tx_timer_created_previous = previous_timer; + previous_timer -> tx_timer_created_next = next_timer; + + /* See if we have to update the created list head pointer. */ + if (_tx_timer_created_ptr == timer_ptr) + { + + /* Yes, move the head pointer to the next link. */ + _tx_timer_created_ptr = next_timer; + } + } + + /* Execute Port-Specific completion processing. If needed, it is typically defined in tx_port.h. */ + TX_TIMER_DELETE_PORT_COMPLETION(timer_ptr) + + /* Restore interrupts. */ + TX_RESTORE + + /* Return TX_SUCCESS. */ + return(TX_SUCCESS); +} + |