1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
|
/*
* Copyright (c) 2006-2025, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2025-07-03 rcitach test case for semaphore
* 2025-11-30 westcity-YOLO Add standardized utest documentation block
*/
/**
* Test Case Name: Kernel Core Semaphore Performance Test
*
* Test Objectives:
* - Measures semaphore synchronization performance
* - Validates priority inheritance in semaphore operations
* - Provides latency metrics for thread synchronization
*
* Test Scenarios:
* - **Semaphore Operation**: Counting semaphore (initial value 0) for thread coordination
* - **Priority Inheritance**: Higher-priority thread (THREAD_PRIORITY+1) response
* - **Stress Test**: Repeated synchronization (RT_UTEST_SYS_PERF_TC_COUNT times)
* - **Thread Coordination**: Two threads exchanging events for timing control
*
* Verification Metrics:
* - Synchronization latency < 35μs
* - 0 errors in thread coordination
* - Consistent results across test cycles
* - No priority inversion issues
*
* Dependencies:
* - RT_USING_SEMAPHORE must be enabled
* - RT_USING_UTEST framework
* - Hardware timer support (for high-precision timing)
*
* Expected Results:
* [ PASSED ] [ result ] testcase (core.sem)
* - Structured performance data table (Min/Max/Avg latency)
* - Final line: "=== Semaphore Performance Test Results End ==="
* - Executable via: `utest_run core.sem` in msh
*/
#include <rtthread.h>
#include <rthw.h>
#include <rtdevice.h>
#include <utest.h>
#include <utest_assert.h>
#include <perf_tc.h>
static rt_sem_t perf_thread_sem = RT_NULL;
static rt_event_t perf_thread_event = RT_NULL;
static rt_sem_t complete_sem = RT_NULL;
#define EVENT_FLAG (1 << 0)
static void perf_thread_sem1(void *parameter)
{
rt_err_t ret = RT_EOK;
rt_perf_t *perf = (rt_perf_t *)parameter;
rt_event_send(perf_thread_event, EVENT_FLAG);
while (1)
{
ret = rt_sem_take(perf_thread_sem, RT_WAITING_FOREVER);
rt_perf_stop(perf);
if(ret != RT_EOK)
{
LOG_E("Sem recv error!");
rt_sem_delete(perf_thread_sem);
return;
}
if (perf->count >= RT_UTEST_SYS_PERF_TC_COUNT)
{
rt_event_delete(perf_thread_event);
rt_sem_delete(perf_thread_sem);
return;
}
rt_event_send(perf_thread_event, EVENT_FLAG);
}
}
static void perf_thread_sem2(void *parameter)
{
rt_err_t ret = RT_EOK;
rt_perf_t *perf = (rt_perf_t *)parameter;
rt_uint32_t recv = 0;
while (1)
{
if (perf->count >= RT_UTEST_SYS_PERF_TC_COUNT)
{
rt_sem_release(complete_sem);
return;
}
ret = rt_event_recv(perf_thread_event, EVENT_FLAG,
(RT_EVENT_FLAG_OR | RT_EVENT_FLAG_CLEAR),
RT_WAITING_FOREVER, &recv);
if(ret != RT_EOK)
{
LOG_E("Event reception failed");
rt_event_delete(perf_thread_event);
rt_sem_release(complete_sem);
return;
}
rt_perf_start(perf);
rt_sem_release(perf_thread_sem);
}
}
rt_err_t rt_perf_thread_sem(rt_perf_t *perf)
{
rt_thread_t thread1 = RT_NULL;
rt_thread_t thread2 = RT_NULL;
# if __STDC_VERSION__ >= 199901L
rt_strcpy(perf->name,__func__);
#else
rt_strcpy(perf->name,"rt_perf_thread_sem");
#endif
perf_thread_sem = rt_sem_create("perf_thread_sem", 0, RT_IPC_FLAG_FIFO);
if (perf_thread_sem == RT_NULL)
{
LOG_E("perf_thread_sem create failed.");
return -RT_ERROR;
}
perf_thread_event = rt_event_create("perf_thread_event", RT_IPC_FLAG_PRIO);
complete_sem = rt_sem_create("complete", 0, RT_IPC_FLAG_FIFO);
thread1 = rt_thread_create("perf_thread_sem1", perf_thread_sem1, perf,
THREAD_STACK_SIZE, THREAD_PRIORITY, THREAD_TIMESLICE);
if (thread1 == RT_NULL)
{
LOG_E("perf_thread_sem1 create failed.");
return -RT_ERROR;
}
thread2 = rt_thread_create("perf_thread_sem2", perf_thread_sem2, perf,
THREAD_STACK_SIZE, THREAD_PRIORITY + 1, THREAD_TIMESLICE);
if (thread2 == RT_NULL)
{
LOG_E("perf_thread_sem2 create failed.");
return -RT_ERROR;
}
rt_thread_startup(thread1);
rt_thread_startup(thread2);
rt_sem_take(complete_sem, RT_WAITING_FOREVER);
rt_perf_dump(perf);
rt_sem_delete(complete_sem);
return RT_EOK;
}
|
