├── LICENSE ├── SConscript ├── figures ├── syswatch_test_mode_0.JPG ├── syswatch_test_mode_1.JPG ├── syswatch_test_mode_2_1.JPG └── syswatch_test_mode_2_2.JPG ├── inc ├── syswatch.h └── syswatch_config.h ├── readme.md └── src ├── syswatch.c └── syswatch_test.c /LICENSE: -------------------------------------------------------------------------------- 1 | GNU LESSER GENERAL PUBLIC LICENSE 2 | Version 2.1, February 1999 3 | 4 | Copyright (C) 1991, 1999 Free Software Foundation, Inc. 5 | 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 6 | Everyone is permitted to copy and distribute verbatim copies 7 | of this license document, but changing it is not allowed. 8 | 9 | (This is the first released version of the Lesser GPL. It also counts 10 | as the successor of the GNU Library Public License, version 2, hence 11 | the version number 2.1.) 12 | 13 | Preamble 14 | 15 | The licenses for most software are designed to take away your 16 | freedom to share and change it. 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-------------------------------------------------------------------------------- https://raw.githubusercontent.com/qiyongzhong0/rt-thread-syswatch/e0fc59e0bad9f27ec1ef84408474f2f784d04d3f/figures/syswatch_test_mode_2_2.JPG -------------------------------------------------------------------------------- /inc/syswatch.h: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/qiyongzhong0/rt-thread-syswatch/e0fc59e0bad9f27ec1ef84408474f2f784d04d3f/inc/syswatch.h -------------------------------------------------------------------------------- /inc/syswatch_config.h: -------------------------------------------------------------------------------- 1 | /* 2 | * File : syswatch.h 3 | * 4 | * Change Logs: 5 | * Date Author Notes 6 | * 2020-01-10 qiyongzhong first version 7 | * 2022-10-27 qiyongzhong fix SYSWATCH_THREAD_STK_SIZE to 1024 8 | */ 9 | 10 | #ifndef __SYSWATCH_CONFIG_H__ 11 | #define __SYSWATCH_CONFIG_H__ 12 | 13 | #include 14 | 15 | //#define PKG_USING_SYSWATCH 16 | //#define SYSWATCH_USING_TEST 17 | 18 | #ifdef PKG_USING_SYSWATCH 19 | 20 | #define SYSWATCH_USING 21 | 22 | /* thread exception resolve mode: 23 | * 0--system reset 24 | * 1--kill exception thread 25 | * 2--resume exception thread 26 | */ 27 | #ifndef SYSWATCH_EXCEPT_RESOLVE_MODE 28 | #define SYSWATCH_EXCEPT_RESOLVE_MODE 2 29 | #endif 30 | 31 | #ifndef SYSWATCH_EXCEPT_TIMEOUT 32 | #define SYSWATCH_EXCEPT_TIMEOUT 60//thread exception blocking timeout, unit : s 33 | #endif 34 | 35 | #ifndef SYSWATCH_EXCEPT_CONFIRM_TMO 36 | #define SYSWATCH_EXCEPT_CONFIRM_TMO 15//exception thread confirm timeout, unit : s 37 | #endif 38 | 39 | #ifndef SYSWATCH_EXCEPT_RESUME_DLY 40 | #define SYSWATCH_EXCEPT_RESUME_DLY 15//exception thread resume delay, unit : s 41 | #endif 42 | 43 | #ifndef SYSWATCH_THREAD_PRIO 44 | #define SYSWATCH_THREAD_PRIO 0//the highest priority allowed in your system 45 | #endif 46 | 47 | #ifndef SYSWATCH_THREAD_STK_SIZE 48 | #define SYSWATCH_THREAD_STK_SIZE 1024//stack size of system watcher 49 | #endif 50 | 51 | #ifndef SYSWATCH_THREAD_NAME 52 | #define SYSWATCH_THREAD_NAME "syswatch"//thread name of system watcher 53 | #endif 54 | 55 | #ifndef SYSWATCH_WDT_NAME 56 | #define SYSWATCH_WDT_NAME "wdt"//name of watchdog device used 57 | #endif 58 | 59 | #ifndef SYSWATCH_WDT_TIMEOUT 60 | #define SYSWATCH_WDT_TIMEOUT 5//timeout of watchdog device used 61 | #endif 62 | 63 | #endif //PKG_USING_SYSWATCH 64 | 65 | #endif //__SYSWATCH_CONFIG_H__ 66 | 67 | 68 | -------------------------------------------------------------------------------- /readme.md: -------------------------------------------------------------------------------- 1 | # 系统看守 2 | 3 | ## 1.简介 4 | 5 | **系统看守(syswatch)组件** 主要功能是保障实时操作系统正常运行，防止系统死机以及各种异常引起的线程阻塞，保障整个系统长期正常运行。系统看守具备以下几种行为模式： 6 | 1.系统崩溃或硬件异常导致系统失去调度时，执行 `系统复位` 恢复系统正常运行。 7 | 2.当有异常导致某些线程长时间阻塞时，可根据用户的配置实施 `系统复位` / `杀掉阻塞线程` / `重启阻塞线程` 的方式恢复系统正常运行。 8 | 9 | ### 1.1工作原理简述 10 | 11 | **系统看守(syswatch)组件** 使用实时操作系统中允许的最高优先级作为看守线程的优先级，保障看守线程不会被阻塞，同时看守线程由看门狗提供看护，保障看守线程正常运行；系统看守通过 `线程调度回调接口` 监测线程的调度情况，当检测到有线程发生异常阻塞时，开始检测和确认具体哪个线程发生了异常阻塞，最后根据异常解决模式执行 `系统复位` / `杀掉阻塞线程` / `重启阻塞线程` 清除异常，使系统恢复正常运行。 12 | 13 | ### 1.2目录结构 14 | 15 | `syswatch` 软件包目录结构如下所示： 16 | 17 | ``` 18 | syswatch 19 | ├───inc // 头文件目录 20 | │ | syswatch.h // API 接口头文件 21 | │ └───syswatch_config.h // 参数配置头文件 22 | ├───src // 源码目录 23 | │ | syswatch.c // 主功能模块 24 | │ └───syswatch_test.c // 功能测试模块 25 | ├───figures // 文档使用图片 26 | │ LICENSE // 软件包许可证 27 | │ README.md // 软件包使用说明 28 | └───SConscript // RT-Thread 默认的构建脚本 29 | ``` 30 | 31 | ### 1.3许可证 32 | 33 | syswatch package 遵循 LGPLv2.1 许可，详见 `LICENSE` 文件。 34 | 35 | ### 1.4依赖 36 | 37 | - RT_Thread 4.0 38 | - RT_Thread watchdog device 39 | - RT_Thread enable system hook 40 | 41 | ## 2.使用 42 | 43 | ### 2.1获取组件 44 | 45 | - **方式1：** 46 | 1.下载[syswatch软件包](https://github.com/qiyongzhong0/rt-thread-syswatch)，并将软件包`syswatch`文件夹复制到工程原码目录下 47 | 2.将软件包中syswatch.c和syswatch_test.c加入项目工程中 48 | 3.将软件包中syswatch_config.h中 `RT_USING_SYSWATCH` 和 `SYSWATCH_USING_TEST` 两个宏的注释去掉;并根据需要修改各项配置参数 49 | 50 | - **方式2：** 51 | 通过 *Env配置工具* 或 *RT-Thread studio* 开启软件包，根据需要配置各项参数；配置路径为 *RT-Thread online packages -> system packages -> syswatch* 52 | 53 | 54 | ### 2.2配置参数说明 55 | 56 | |参数宏|说明| 57 | |----|----| 58 | |`SYSWATCH_EXCEPT_RESOLVE_MODE`|异常解决模式，可配置值0~2，默认值 2，0--复位系统，1--杀掉异常线程，2--重启异常线程 59 | |`SYSWATCH_EXCEPT_TIMEOUT`|判定存在线程异常的超时时间，单位：秒，默认值 60 60 | |`SYSWATCH_EXCEPT_CONFIRM_TMO`|确认异常线程的超时时间，单位：秒，默认值 15 61 | |`SYSWATCH_EXCEPT_RESUME_DLY`|重启异常线程的延时时间，单位：秒，默认值 15 62 | |`SYSWATCH_THREAD_PRIO`|系统看守线程的优先级，默认值 0 63 | |`SYSWATCH_THREAD_STK_SIZE`|系统看守线程的堆栈尺寸，默认值 512 64 | |`SYSWATCH_THREAD_NAME`|系统看守线程的名称，默认值 `syswatch` 65 | |`SYSWATCH_WDT_NAME`|使用看门狗设备的名称，默认值 `wdt` 66 | |`SYSWATCH_WDT_TIMEOUT`|使用看门设备的超时时间，单位：秒，默认值 5 67 | 68 | ## 3.注意事项 69 | 70 | - syswatch 依赖于看门狗设备而工作，使用本组件时请确认已注册了看门狗设备。 71 | - syswatch 全权管理看门狗，请不要在其它线程中使用和操作看门狗。 72 | - syswatch 提供了3种异常解决模式，请根据实际需要配置适合的工作模式。 73 | - `syswatch_set_event_hook` 提供用户安装事件回调函数，以便针对重要事件发生时进行一些必要处理，如系统复位前须对重要数据进行保存时，可设置回调函数完成相应处理，如不需要可不设置。 74 | 75 | ## 4.测试验证 76 | 77 | 组件安装后，为了验证其功能是否正常，组件提供了测试例程，可通过shell命令`syswatch_test`创建异常模拟线程。 78 | `syswatch_test`命令参数有2个，第1个是创建线程的优先级，第2个是发生异常阻塞的延时时间。 79 | 如执行命令`syswatch_test 20 30`后，会创建一个优先级为20的线程，在线程开始运行30秒后，线程进入异常阻塞状态。 80 | 81 | ### 4.1模式0测试示例 82 | 83 | ![syswatch_test_mode_0.JPG](figures/syswatch_test_mode_0.JPG) 84 | 85 | ### 4.2模式1测试示例 86 | 87 | ![syswatch_test_mode_1.JPG](figures/syswatch_test_mode_1.JPG) 88 | 89 | ### 4.3模式2测试示例 90 | 91 | ![syswatch_test_mode_2_1.JPG](figures/syswatch_test_mode_2_1.JPG) 92 | ![syswatch_test_mode_2_2.JPG](figures/syswatch_test_mode_2_2.JPG) 93 | 94 | ## 5. 联系方式 95 | 96 | * 维护：qiyongzhong 97 | * 主页：https://github.com/qiyongzhong0/rt-thread-syswatch 98 | * 主页：https://gitee.com/qiyongzhong0/rt-thread-syswatch 99 | 100 | 101 | -------------------------------------------------------------------------------- /src/syswatch.c: -------------------------------------------------------------------------------- 1 | /* 2 | * File : syswatch.c 3 | * 4 | * Change Logs: 5 | * Date Author Notes 6 | * 2020-01-08 qiyongzhong first version 7 | * 2020-05-08 qiyongzhong optimized initialization operation 8 | */ 9 | 10 | #include 11 | #include 12 | #include 13 | #include 14 | 15 | #ifdef SYSWATCH_USING 16 | 17 | //#define SYSWATCH_DEBUG 18 | 19 | #define DBG_TAG SYSWATCH_THREAD_NAME 20 | #ifdef SYSWATCH_DEBUG 21 | #define DBG_LVL DBG_LOG 22 | #else 23 | #define DBG_LVL DBG_INFO 24 | #endif 25 | #include 26 | 27 | typedef struct{ 28 | rt_bool_t init_ok; 29 | rt_uint16_t sec_cnt;//time counter 30 | rt_uint16_t op_step;//opration step : 0--wait thread except, 1--check except thread 31 | syswatch_event_hook_t event_hook; 32 | rt_device_t wdt;//watch dog device 33 | rt_thread_t lowest_thread;//the lowest priority thread that the system can switch to,except for idle thread 34 | rt_slist_t wait_resume_slist;//list of threads waiting for resume 35 | }syswatch_data_t; 36 | 37 | #if (SYSWATCH_EXCEPT_RESOLVE_MODE == 2) 38 | typedef struct thread_msg{ 39 | rt_slist_t slist; 40 | void * thread; 41 | void * entry; 42 | void * parameter; 43 | void * stack_addr; 44 | rt_uint32_t stack_size; 45 | rt_uint32_t init_tick; 46 | rt_uint8_t priority; 47 | char name[RT_NAME_MAX]; 48 | }thread_msg_t; 49 | #endif 50 | 51 | static syswatch_data_t sw_data = {RT_FALSE,0,0,RT_NULL,RT_NULL,RT_NULL}; 52 | 53 | static void syswatch_event_hook_call(syswatch_event_t eid, rt_thread_t except_thread) 54 | { 55 | if (sw_data.event_hook) 56 | { 57 | (sw_data.event_hook)(eid, except_thread); 58 | } 59 | } 60 | 61 | static int syswatch_wdt_startup(void) 62 | { 63 | rt_uint32_t wdt_tmo = SYSWATCH_WDT_TIMEOUT; 64 | rt_device_t wdt = rt_device_find(SYSWATCH_WDT_NAME); 65 | 66 | if (wdt == RT_NULL) 67 | { 68 | return -RT_ERROR; 69 | } 70 | 71 | sw_data.wdt = wdt; 72 | rt_device_init(wdt); 73 | rt_device_control(wdt, RT_DEVICE_CTRL_WDT_SET_TIMEOUT, &wdt_tmo); 74 | rt_device_control(wdt, RT_DEVICE_CTRL_WDT_START, RT_NULL); 75 | 76 | return RT_EOK; 77 | } 78 | 79 | static void syswatch_wdt_feed(void) 80 | { 81 | rt_device_control(sw_data.wdt, RT_DEVICE_CTRL_WDT_KEEPALIVE, RT_NULL); 82 | } 83 | 84 | #if (SYSWATCH_EXCEPT_RESOLVE_MODE == 0) 85 | /* thread except resolve mode 0--system reset */ 86 | static void syswatch_thread_except_resolve_reset(rt_thread_t thread) 87 | { 88 | #if (RTTHREAD_VERSION < 50002) 89 | LOG_E("%.*s thread exception, priority = %d, execute system reset", RT_NAME_MAX, thread->name, thread->current_priority); 90 | #elif (RTTHREAD_VERSION <= 50100) 91 | LOG_E("%.*s thread exception, priority = %d, execute system reset", RT_NAME_MAX, thread->parent.name, thread->current_priority); 92 | #else 93 | LOG_E("%.*s thread exception, priority = %d, execute system reset", RT_NAME_MAX, thread->parent.name, RT_SCHED_PRIV(thread).current_priority); 94 | #endif 95 | syswatch_event_hook_call(SYSWATCH_EVENT_SYSTEM_RESET, thread); 96 | rt_thread_mdelay(100); 97 | rt_hw_cpu_reset(); 98 | } 99 | #endif 100 | 101 | #if ((SYSWATCH_EXCEPT_RESOLVE_MODE == 1)||(SYSWATCH_EXCEPT_RESOLVE_MODE == 2)) 102 | /* thread except resolve mode 1 or 2--kill exception thread */ 103 | static void syswatch_thread_except_resolve_kill(rt_thread_t thread) 104 | { 105 | syswatch_event_hook_call(SYSWATCH_EVENT_THREAD_KILL, thread); 106 | 107 | if (rt_object_is_systemobject((rt_object_t)thread)) 108 | { 109 | rt_thread_detach(thread); 110 | } 111 | else 112 | { 113 | rt_thread_delete(thread); 114 | } 115 | 116 | #if (RTTHREAD_VERSION < 50002) 117 | LOG_E("%.*s thread exception, priority = %d, successfully killed", RT_NAME_MAX, thread->name, thread->current_priority); 118 | #elif (RTTHREAD_VERSION <= 50100) 119 | LOG_E("%.*s thread exception, priority = %d, successfully killed", RT_NAME_MAX, thread->parent.name, thread->current_priority); 120 | #else 121 | LOG_E("%.*s thread exception, priority = %d, successfully killed", RT_NAME_MAX, thread->parent.name, RT_SCHED_PRIV(thread).current_priority); 122 | #endif 123 | } 124 | #endif 125 | 126 | #if (SYSWATCH_EXCEPT_RESOLVE_MODE == 2) 127 | /* thread except resolve mode 2--save exception thread message */ 128 | static void syswatch_thread_except_resolve_resume_save_msg(rt_thread_t thread) 129 | { 130 | thread_msg_t *thread_msg; 131 | 132 | thread_msg = rt_malloc(sizeof(thread_msg_t)); 133 | if (thread_msg == RT_NULL) 134 | { 135 | LOG_E("save exception thread message fail, no memory"); 136 | return; 137 | } 138 | 139 | thread_msg->thread = thread; 140 | thread_msg->entry = thread->entry; 141 | thread_msg->parameter = thread->parameter; 142 | thread_msg->stack_addr = thread->stack_addr; 143 | thread_msg->stack_size = thread->stack_size; 144 | #if (RTTHREAD_VERSION < 40100) 145 | thread_msg->init_tick = thread->init_tick; 146 | thread_msg->priority= thread->init_priority; 147 | #elif (RTTHREAD_VERSION <= 50100) 148 | thread_msg->init_tick = thread->init_tick; 149 | thread_msg->priority= thread->current_priority; 150 | #else 151 | thread_msg->init_tick = RT_SCHED_PRIV(thread).init_tick; 152 | thread_msg->priority= RT_SCHED_PRIV(thread).current_priority; 153 | #endif 154 | #if (RTTHREAD_VERSION < 50002) 155 | rt_strncpy(thread_msg->name, thread->name, RT_NAME_MAX); 156 | #else 157 | rt_strncpy(thread_msg->name, thread->parent.name, RT_NAME_MAX); 158 | #endif 159 | 160 | rt_slist_append(&(sw_data.wait_resume_slist), (rt_slist_t *)thread_msg); 161 | 162 | LOG_I("save exception thread message successfully"); 163 | } 164 | 165 | /* thread except resolve mode 2--resume exception thread from thread message */ 166 | static void syswatch_thread_except_resolve_resume_from_msg(thread_msg_t * thread_msg) 167 | { 168 | if (rt_object_is_systemobject((rt_object_t)(thread_msg->thread))) 169 | { 170 | rt_thread_init( thread_msg->thread, 171 | thread_msg->name, 172 | (void (*)(void*))(thread_msg->entry), 173 | thread_msg->parameter, 174 | thread_msg->stack_addr, 175 | thread_msg->stack_size, 176 | thread_msg->priority, 177 | thread_msg->init_tick 178 | ); 179 | rt_thread_startup(thread_msg->thread); 180 | syswatch_event_hook_call(SYSWATCH_EVENT_THREAD_RESUMED, thread_msg->thread); 181 | LOG_I("%.*s exception thread, priority = %d, successfully resumed", RT_NAME_MAX, thread_msg->name, thread_msg->priority); 182 | } 183 | else 184 | { 185 | rt_thread_t thread = rt_thread_create( thread_msg->name, 186 | (void (*)(void*))(thread_msg->entry), 187 | thread_msg->parameter, 188 | thread_msg->stack_size, 189 | thread_msg->priority, 190 | thread_msg->init_tick 191 | ); 192 | if (thread) 193 | { 194 | rt_thread_startup(thread); 195 | syswatch_event_hook_call(SYSWATCH_EVENT_THREAD_RESUMED, thread); 196 | LOG_I("%.*s exception thread, priority = %d, successfully resumed", RT_NAME_MAX, thread_msg->name, thread_msg->priority); 197 | } 198 | else 199 | { 200 | LOG_E("%.*s exception thread, priority = %d, resume fail", RT_NAME_MAX, thread_msg->name, thread_msg->priority); 201 | } 202 | } 203 | } 204 | 205 | /* thread except resolve mode 2--resume all exception thread */ 206 | static void syswatch_thread_except_resolve_resume_all(void) 207 | { 208 | thread_msg_t *thread_msg; 209 | 210 | while(1) 211 | { 212 | thread_msg = (thread_msg_t *)rt_slist_first(&(sw_data.wait_resume_slist)); 213 | if (thread_msg == RT_NULL) 214 | { 215 | break; 216 | } 217 | syswatch_thread_except_resolve_resume_from_msg(thread_msg); 218 | rt_slist_remove(&(sw_data.wait_resume_slist), (rt_slist_t *)thread_msg); 219 | rt_free(thread_msg); 220 | } 221 | } 222 | #endif 223 | 224 | static void syswatch_thread_except_resolve(rt_thread_t thread) 225 | { 226 | if ((thread == RT_NULL) || thread == rt_thread_self()) 227 | { 228 | LOG_D("exception thread is null or self"); 229 | return; 230 | } 231 | 232 | #if (SYSWATCH_EXCEPT_RESOLVE_MODE == 0)//mode 0--system reset 233 | syswatch_thread_except_resolve_reset(thread); 234 | #elif (SYSWATCH_EXCEPT_RESOLVE_MODE == 1)//mode 1--kill exception thread 235 | syswatch_thread_except_resolve_kill(thread); 236 | #elif (SYSWATCH_EXCEPT_RESOLVE_MODE == 2)//mode 2--resume exception thread 237 | syswatch_thread_except_resolve_resume_save_msg(thread); 238 | syswatch_thread_except_resolve_kill(thread); 239 | #else 240 | #error "SYSWATCH_EXCEPT_DEAL_MODE define error,it must be 0/1/2" 241 | #endif 242 | } 243 | 244 | static void syswatch_thread_switch_hook(struct rt_thread * from, struct rt_thread * to) 245 | { 246 | 247 | #if (RTTHREAD_VERSION <= 50100) 248 | if (from->current_priority > to->current_priority)//low->high or same, no care 249 | #else 250 | if (RT_SCHED_PRIV(from).current_priority > RT_SCHED_PRIV(to).current_priority)//low->high or same, no care 251 | #endif 252 | { 253 | return; 254 | } 255 | #if (RTTHREAD_VERSION <= 50100) 256 | if (to->current_priority == RT_THREAD_PRIORITY_MAX-1)//switch to idle thread 257 | #else 258 | if (RT_SCHED_PRIV(to).current_priority == RT_THREAD_PRIORITY_MAX-1)//switch to idle thread 259 | #endif 260 | { 261 | #if (SYSWATCH_EXCEPT_RESOLVE_MODE == 2) 262 | switch(sw_data.op_step) 263 | { 264 | case 0://waiting thread exception 265 | sw_data.sec_cnt = 0; 266 | break; 267 | case 1://confirming exception thread 268 | sw_data.sec_cnt = 0; 269 | if (! rt_slist_isempty(&(sw_data.wait_resume_slist)))//mode 2 : all exception threads have been killed 270 | { 271 | sw_data.op_step = 2;//to resume 272 | } 273 | else 274 | { 275 | sw_data.op_step = 0;//to waiting 276 | } 277 | break; 278 | case 2://resuming exception thread 279 | break; 280 | default: 281 | break; 282 | } 283 | #else 284 | sw_data.sec_cnt = 0; 285 | sw_data.op_step = 0; 286 | #endif 287 | return; 288 | } 289 | if (sw_data.op_step != 1)//no confirming exception thread 290 | { 291 | return; 292 | } 293 | if (sw_data.lowest_thread == RT_NULL)//begin confirming exception thread 294 | { 295 | sw_data.lowest_thread = to; 296 | return; 297 | } 298 | #if (RTTHREAD_VERSION <= 50100) 299 | if (to->current_priority > sw_data.lowest_thread->current_priority)//to lower 300 | #else 301 | if (RT_SCHED_PRIV(to).current_priority > RT_SCHED_PRIV(sw_data.lowest_thread).current_priority)//to lower 302 | #endif 303 | { 304 | sw_data.lowest_thread = to; 305 | return; 306 | } 307 | #if (RTTHREAD_VERSION <= 50100) 308 | if (to->current_priority < sw_data.lowest_thread->current_priority)//to higher 309 | #else 310 | if (RT_SCHED_PRIV(to).current_priority < RT_SCHED_PRIV(sw_data.lowest_thread).current_priority)//to higher 311 | #endif 312 | { 313 | return; 314 | } 315 | #if (RTTHREAD_VERSION <= 50100) 316 | if (to->current_priority == from->current_priority)//same priority task switching 317 | #else 318 | if (RT_SCHED_PRIV(to).current_priority == RT_SCHED_PRIV(from).current_priority)//same priority task switching 319 | #endif 320 | { 321 | #if (RTTHREAD_VERSION <= 50100) 322 | if ((from->stat & RT_THREAD_STAT_MASK) == RT_THREAD_RUNNING)//is yield 323 | #else 324 | if ((RT_SCHED_CTX(from).stat & RT_THREAD_STAT_MASK) == RT_THREAD_RUNNING)//is yield 325 | #endif 326 | { 327 | sw_data.lowest_thread = from; 328 | } 329 | } 330 | } 331 | 332 | static rt_bool_t syswatch_check_timeout(rt_uint16_t tmo_s) 333 | { 334 | sw_data.sec_cnt++; 335 | if (sw_data.sec_cnt < tmo_s) 336 | { 337 | return(RT_FALSE); 338 | } 339 | sw_data.sec_cnt = 0; 340 | return(RT_TRUE); 341 | } 342 | 343 | static void syswatch_fsm(void) 344 | { 345 | switch(sw_data.op_step) 346 | { 347 | case 0://waiting thread except 348 | if (syswatch_check_timeout(SYSWATCH_EXCEPT_TIMEOUT)) 349 | { 350 | sw_data.op_step = 1; 351 | sw_data.lowest_thread = RT_NULL; 352 | } 353 | break; 354 | case 1://confirming except thread 355 | if (syswatch_check_timeout(SYSWATCH_EXCEPT_CONFIRM_TMO)) 356 | { 357 | syswatch_thread_except_resolve(sw_data.lowest_thread); 358 | sw_data.lowest_thread = RT_NULL; 359 | } 360 | break; 361 | #if (SYSWATCH_EXCEPT_RESOLVE_MODE == 2) 362 | case 2://resuming except thread 363 | if (syswatch_check_timeout(SYSWATCH_EXCEPT_RESUME_DLY)) 364 | { 365 | syswatch_thread_except_resolve_resume_all(); 366 | sw_data.op_step = 0; 367 | } 368 | break; 369 | #endif 370 | default: 371 | sw_data.op_step = 0; 372 | sw_data.sec_cnt = 0; 373 | break; 374 | } 375 | } 376 | 377 | static void syswatch_thread_entry(void *parameter) 378 | { 379 | if (syswatch_wdt_startup() != RT_EOK) 380 | { 381 | LOG_E("watch dog startup fail"); 382 | return; 383 | } 384 | 385 | LOG_I("system watch startup successfully"); 386 | 387 | rt_slist_init(&(sw_data.wait_resume_slist)); 388 | rt_scheduler_sethook(syswatch_thread_switch_hook); 389 | 390 | while(1) 391 | { 392 | rt_thread_delay(RT_TICK_PER_SECOND); 393 | syswatch_wdt_feed(); 394 | syswatch_fsm(); 395 | } 396 | } 397 | 398 | void syswatch_set_event_hook(syswatch_event_hook_t hook) 399 | { 400 | sw_data.event_hook = hook; 401 | } 402 | 403 | int syswatch_init(void) 404 | { 405 | rt_thread_t tid; 406 | 407 | if(sw_data.init_ok) 408 | { 409 | return RT_EOK; 410 | } 411 | 412 | tid = rt_thread_create(SYSWATCH_THREAD_NAME, syswatch_thread_entry, RT_NULL, 413 | SYSWATCH_THREAD_STK_SIZE, SYSWATCH_THREAD_PRIO, 20); 414 | if (tid == RT_NULL) 415 | { 416 | LOG_E("create syswatch thread failed."); 417 | return -RT_ERROR; 418 | } 419 | 420 | LOG_I("create syswatch thread success."); 421 | rt_thread_startup(tid); 422 | sw_data.init_ok = RT_TRUE; 423 | 424 | return RT_EOK; 425 | } 426 | INIT_COMPONENT_EXPORT(syswatch_init); 427 | 428 | #endif //SYSWATCH_USING 429 | -------------------------------------------------------------------------------- /src/syswatch_test.c: -------------------------------------------------------------------------------- 1 | /* 2 | * File : syswatch_test.c 3 | * 4 | * Change Logs: 5 | * Date Author Notes 6 | * 2020-01-10 qiyongzhong first version 7 | */ 8 | 9 | #include 10 | #include 11 | #include 12 | #include 13 | 14 | #ifdef SYSWATCH_USING_TEST 15 | 16 | #define DBG_TAG "syswatch_test" 17 | #define DBG_LVL DBG_LOG 18 | #include 19 | 20 | static rt_uint32_t thread_cnt = 0; 21 | static rt_uint32_t thread_sign = 0; 22 | 23 | static void syswatch_test_thread_entry(void *parameter) 24 | { 25 | rt_uint32_t delay_s = (rt_uint32_t)parameter; 26 | rt_thread_t thread = rt_thread_self(); 27 | 28 | #if (RTTHREAD_VERSION < 50002) 29 | char *thrd_name = thread->name; 30 | #else 31 | char *thrd_name = thread->parent.name; 32 | #endif 33 | 34 | #if (RTTHREAD_VERSION <= 50100) 35 | rt_uint8_t priority = thread->current_priority; 36 | #else 37 | rt_uint8_t priority = RT_SCHED_PRIV(thread).current_priority; 38 | #endif 39 | 40 | #if (SYSWATCH_EXCEPT_RESOLVE_MODE == 2) 41 | 42 | rt_uint32_t idx; 43 | 44 | idx = atoi(thrd_name+6); 45 | idx %= 32; 46 | 47 | if ((thread_sign & (1< [delay_s]\n", RT_THREAD_PRIORITY_MAX-2); 105 | return ; 106 | } 107 | prio = atoi(argv[1]); 108 | if (prio > RT_THREAD_PRIORITY_MAX-2) 109 | { 110 | prio = RT_THREAD_PRIORITY_MAX-2; 111 | } 112 | if (argc == 3) 113 | { 114 | delay_s = atoi(argv[2]); 115 | } 116 | syswatch_test_startup(prio, delay_s); 117 | } 118 | MSH_CMD_EXPORT(syswatch_test, system watch test); 119 | 120 | #endif //SYSWATCH_TEST_USING 121 | 122 | --------------------------------------------------------------------------------