1 /**************************************************************************/
2 /* */
3 /* Copyright (c) Microsoft Corporation. All rights reserved. */
4 /* */
5 /* This software is licensed under the Microsoft Software License */
6 /* Terms for Microsoft Azure RTOS. Full text of the license can be */
7 /* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */
8 /* and in the root directory of this software. */
9 /* */
10 /**************************************************************************/
11
12
13 /**************************************************************************/
14 /**************************************************************************/
15 /** */
16 /** ThreadX Component */
17 /** */
18 /** Timer */
19 /** */
20 /**************************************************************************/
21 /**************************************************************************/
22
23 #define TX_SOURCE_CODE
24
25
26 /* Include necessary system files. */
27
28 #include "tx_api.h"
29 #include "tx_trace.h"
30 #include "tx_timer.h"
31
32
33 /**************************************************************************/
34 /* */
35 /* FUNCTION RELEASE */
36 /* */
37 /* _tx_timer_change PORTABLE C */
38 /* 6.1 */
39 /* AUTHOR */
40 /* */
41 /* William E. Lamie, Microsoft Corporation */
42 /* */
43 /* DESCRIPTION */
44 /* */
45 /* This function modifies an application timer as specified by the */
46 /* input. */
47 /* */
48 /* INPUT */
49 /* */
50 /* timer_ptr Pointer to timer control block */
51 /* initial_ticks Initial expiration ticks */
52 /* reschedule_ticks Reschedule ticks */
53 /* */
54 /* OUTPUT */
55 /* */
56 /* TX_SUCCESS Successful completion status */
57 /* */
58 /* CALLS */
59 /* */
60 /* None */
61 /* */
62 /* CALLED BY */
63 /* */
64 /* Application Code */
65 /* */
66 /* RELEASE HISTORY */
67 /* */
68 /* DATE NAME DESCRIPTION */
69 /* */
70 /* 05-19-2020 William E. Lamie Initial Version 6.0 */
71 /* 09-30-2020 Yuxin Zhou Modified comment(s), */
72 /* resulting in version 6.1 */
73 /* */
74 /**************************************************************************/
_tx_timer_change(TX_TIMER * timer_ptr,ULONG initial_ticks,ULONG reschedule_ticks)75 UINT _tx_timer_change(TX_TIMER *timer_ptr, ULONG initial_ticks, ULONG reschedule_ticks)
76 {
77
78 TX_INTERRUPT_SAVE_AREA
79
80
81 /* Disable interrupts to put the timer on the created list. */
82 TX_DISABLE
83
84 /* If trace is enabled, insert this event into the trace buffer. */
85 TX_TRACE_IN_LINE_INSERT(TX_TRACE_TIMER_CHANGE, timer_ptr, initial_ticks, reschedule_ticks, 0, TX_TRACE_TIMER_EVENTS)
86
87 /* Log this kernel call. */
88 TX_EL_TIMER_CHANGE_INSERT
89
90 /* Determine if the timer is active. */
91 if (timer_ptr -> tx_timer_internal.tx_timer_internal_list_head == TX_NULL)
92 {
93
94 /* Setup the new expiration fields. */
95 timer_ptr -> tx_timer_internal.tx_timer_internal_remaining_ticks = initial_ticks;
96 timer_ptr -> tx_timer_internal.tx_timer_internal_re_initialize_ticks = reschedule_ticks;
97 }
98
99 /* Restore interrupts. */
100 TX_RESTORE
101
102 /* Return TX_SUCCESS. */
103 return(TX_SUCCESS);
104 }
105
106
