module_const.h 20 KB

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  1. #ifndef MODULE_CONST_H
  2. #define MODULE_CONST_H
  3. /**
  4. * @brief 包含常用的常量,接口基类,工具类
  5. * @author 戴月腾
  6. * @date 2018-08-24
  7. */
  8. #include<map>
  9. #include<vector>
  10. #include<string>
  11. #include<chrono>
  12. #include"db_api/CDBConnPool.h"
  13. #include"log.h"
  14. #include<rapidjson/document.h>
  15. #include<rapidjson/prettywriter.h>
  16. #include<rapidjson/stringbuffer.h>
  17. #include<websocket/wsClientMgr.h>
  18. #include<thread>
  19. #include"card.h"
  20. #include"area.h"
  21. #include"constdef.h"
  22. #define LENGTH_SQL 2000
  23. ///全局常量
  24. class global_constant
  25. {
  26. public:
  27. // ///区域超速最小次数门限
  28. // static int AREA_SPEED_COUNT_MIN;
  29. ///区域超速最大次数门限
  30. static int AREA_SPEED_COUNT_LIMIT;
  31. // ///区域超速最小时间门限
  32. // static int AREA_SPEED_TIME_MIN;
  33. // ///区域超速最大时间门限
  34. // static int AREA_SPEED_TIME_MAX;
  35. // ///车辆考勤最小次数门限
  36. // static int ATTENDANCE_VEHICLE_COUNT_MIN;
  37. ///车辆考勤最大次数门限
  38. static int ATTENDANCE_VEHICLE_COUNT_LIMIT;
  39. // ///车辆考勤最小时间门限
  40. // static int ATTENDANCE_VEHICLE_TIME_MIN;
  41. // ///车辆考勤最大时间门限
  42. // static int ATTENDANCE_VEHICLE_TIME_MAX;
  43. };
  44. /**
  45. * @brief 事件状态
  46. */
  47. enum EVENT_STATUS
  48. {
  49. ///事件开始
  50. ES_START = 0,
  51. ///呼救已处理状态
  52. ES_DEAL_HELP = 1,
  53. ///事件结束
  54. ES_END = 100
  55. };
  56. //enum STATUS_CARD
  57. //{
  58. // STATUS_NORMAL = 0, //正常
  59. // STATUS_ERROR = 1,
  60. // STATUS_ERROR_SERIOUS = 2,
  61. // STATUS_POWER_LOWER = 1, //电量低
  62. // STATUS_POWER_LOWER_SERIOUS = 2, //电量极低
  63. // STATUS_OVER_TIME = 4, //超时
  64. // //STATUS_OVER_COUNT = 1,
  65. // STATUS_OVER_SPEED = 8, //超速
  66. // STATUS_AREA_OVER_TIME = 16, //区域超时
  67. // //STATUS_AREA_OVER_COUNT = 1,
  68. // STATUS_AREA_OVER_SPEED = 32, //区域超速
  69. // STATUS_AREA_FORBIDDEN = 64, //进入限制区域
  70. // ////STATUS_HELP = 128, //呼救
  71. // STATUS_HELP_DEALED = 256, //呼救已处理
  72. // STATUS_CALL = 512, //呼叫
  73. // STATUS_LOST = 1024 //进入盲区
  74. // //STATUS_ERROR_DEALED,
  75. //};
  76. enum EVENT_TYPE{ // 事件类型
  77. ET_UNKNOWN = 0,
  78. ET_OVER_COUNT_PERSON = 1, // 井下人员超员mp_card_list_over_count_person
  79. ET_OVER_COUNT_VEHICLE = 2, // 井下车辆超员mp_card_list_over_count_person
  80. ET_AREA_OVER_COUNT_PERSON = 3, // 区域人员超员
  81. ET_AREA_OVER_COUNT_VEHICLE = 4, // 区域车辆超员
  82. ET_SECTION_OVER_COUNT = 5, // 路段拥堵
  83. ET_READER_ERROR = 6, // 分站通信异常
  84. ET_ctrl_reader_ERROR = 7, // 控制分站异常
  85. ET_LIGHT_ERROR = 8, // 交通灯异常
  86. ET_READER_CALL = 9, // 分站呼叫标识卡
  87. ET_READER_CALL_CANCEL = 10, // 取消呼叫分站
  88. ET_CARD_LOW_POWER = 11, // 电量低
  89. ET_CARD_LOW_POWER_SERIOUS = 12, // 电量极低
  90. ET_CARD_OVER_TIME_PERSON = 13, // 人员井下超时mp_card_list_over_time_person
  91. ET_CARD_OVER_TIME_VEHICLE = 14, // 车辆井下超时mp_card_list_over_time_vehicle
  92. ET_CARD_AREA_OVER_TIME_PERSON = 15, // 人员区域超时
  93. ET_CARD_AREA_OVER_TIME_VEHICLE = 16, // 车辆区域超时
  94. ET_CARD_AREA_LIMIT_PERSON = 17, // 人员进入限制区域
  95. ET_CARD_AREA_LIMIT_VEHICLE = 18, // 车辆进入限制区域
  96. ET_CARD_AREA_FORBIDDEN_PERSON = 19, // 人员进入禁止区域
  97. ET_CARD_AREA_FORBIDDEN_VEHICLE = 20, // 车辆进入禁止区域
  98. ET_CARD_OVER_SPEED = 21, // 车辆超速
  99. ET_CARD_AREA_OVER_SPEED = 22, // 车辆区域超速
  100. ET_CARD_RUN_THE_RED_LIGHT = 23, // 车辆闯红灯
  101. ET_CARD_HELP = 24, // 人员呼救
  102. ET_CARD_CALLED = 25, // 人员已被呼叫
  103. ET_CARD_PATROL_ERROR = 26, // 人员巡检异常
  104. ET_CARD_LOST = 27, // 标识卡信号丢失
  105. ET_CARD_DRIVINGFACE_WARNING_AREA = 28, // 掘进面靠近预警区域告警
  106. ET_CARD_NEAR_DRIVINGFACE_VEHICLE=29,// 人员靠近掘进机告警
  107. ET_CARD_NEAR_DRIVINGFACE_OVERCOUNT=30,//掘进机附近人员超员
  108. ET_UWB_MORE_CARD = 31,
  109. ET_CARD_MOTIONLESS=32,
  110. CARD_EVENT_COUNT_MAX,
  111. };
  112. /**
  113. * @brief 对象类型
  114. */
  115. enum OBJECT_TYPE
  116. {
  117. ///矿井
  118. OT_MINE = 1,
  119. ///区域
  120. OT_AREA = 2,
  121. ///路段
  122. OT_SECTION = 3,
  123. ///分站
  124. OT_DEVICE_READER = 4,
  125. ///交通灯
  126. OT_DEVICE_LIGHT = 5,
  127. ///控制分站
  128. OT_DEVICE_ctrl_reader = 6,
  129. ///led屏
  130. OT_DEVICE_LED = 7,
  131. ///防爆音箱
  132. OT_DEVICE_SPEAKER = 8,
  133. ///标识卡,包括人员、车辆、自组网等
  134. OT_CARD = 9,
  135. ///
  136. OT_DRIVINGFACE_AREA=10,
  137. ///
  138. OT_UWB_MORE_CARD=11,
  139. };
  140. /**
  141. * @brief 告警事件
  142. */
  143. class ya_event
  144. {
  145. private:
  146. uint64_t m_ev_id;
  147. public:
  148. ya_event(uint64_t e_id):m_cur_time(std::chrono::system_clock::now())
  149. {
  150. m_ev_id = e_id;
  151. m_obj_id = 0;
  152. m_map_id = 0;
  153. m_area_id = 0;
  154. x = 0;
  155. y = 0;
  156. m_limit_value = 0;
  157. m_cur_value = 0;
  158. m_desc = "";
  159. m_landmarkid = 0;
  160. m_landmarkdirect = 0;
  161. m_landmarkdist = 0;
  162. m_status=ES_START;
  163. }
  164. ~ya_event(){}
  165. public:
  166. ///告警状态,开始、结束
  167. EVENT_STATUS m_status;
  168. ///告警类型
  169. EVENT_TYPE m_ev_type;
  170. ///告警对象类型
  171. OBJECT_TYPE m_obj_type;
  172. /// 告警对象编号,与告警对象类型对应,如告警对象类型为分站,此字段为分站编号
  173. uint64_t m_obj_id;
  174. ///当前时间,为告警事件的触发时间,如果状态为开始,则表示开始时间,否则为结束时间
  175. std::chrono::system_clock::time_point m_cur_time;
  176. ///告警所在地图
  177. int m_map_id;
  178. ///告警所在区域
  179. int m_area_id;
  180. ///位置
  181. double x;
  182. ///位置
  183. double y;
  184. ///告警阈值
  185. double m_limit_value;
  186. ///当前值
  187. double m_cur_value;
  188. ///描述
  189. std::string m_desc;
  190. /// 地标信息
  191. int m_landmarkid;
  192. /// 与地标的距离
  193. double m_landmarkdist;
  194. /// 所处地标的方向
  195. int m_landmarkdirect;
  196. ///作为事件map列表的id,方便查找;(obj_type<<32| obj_id)
  197. uint64_t m_list_id;
  198. uint64_t get_id(){return m_ev_id;}
  199. };
  200. typedef std::shared_ptr<ya_event> event_ptr;
  201. typedef std::map<uint64_t, std::shared_ptr<ya_event>> event_map;
  202. typedef std::shared_ptr<event_map> event_map_ptr;
  203. class tool_time
  204. {
  205. public:
  206. static uint32_t elapse_seconds(std::chrono::system_clock::time_point &start)
  207. {
  208. return std::chrono::duration_cast<std::chrono::seconds>
  209. (std::chrono::system_clock::now() - start).count();
  210. }
  211. static uint64_t elapse_ms(std::chrono::system_clock::time_point &start)
  212. {
  213. return std::chrono::duration_cast<std::chrono::milliseconds>
  214. (std::chrono::system_clock::now() - start).count();
  215. }
  216. static uint32_t now_to_seconds()
  217. {
  218. return std::chrono::duration_cast<std::chrono::seconds>
  219. (std::chrono::system_clock::now().time_since_epoch()).count();
  220. }
  221. static uint64_t now_to_ms()
  222. {
  223. return std::chrono::duration_cast<std::chrono::milliseconds>
  224. (std::chrono::system_clock::now().time_since_epoch()).count();
  225. }
  226. static uint64_t to_ms(const std::chrono::system_clock::time_point &time)
  227. {
  228. return std::chrono::duration_cast<std::chrono::milliseconds>
  229. (time.time_since_epoch()).count();
  230. }
  231. static std::string to_str(const std::chrono::system_clock::time_point &time)
  232. {
  233. char _time[25] = {0};
  234. time_t tt = std::chrono::system_clock::to_time_t(time);
  235. struct tm *local_time=localtime(&tt);
  236. strftime(_time, 22, "%Y-%m-%d %H:%M:%S", local_time);
  237. return std::string(_time);
  238. }
  239. ///"%u-%u-%u %u:%u:%u.%u"
  240. static std::string to_str_ex(const std::chrono::system_clock::time_point &time)
  241. {
  242. uint64_t mill = std::chrono::duration_cast<std::chrono::milliseconds>(time.time_since_epoch()).count()
  243. -std::chrono::duration_cast<std::chrono::seconds>(time.time_since_epoch()).count()*1000;
  244. char _time[25] = {0};
  245. time_t tt = std::chrono::system_clock::to_time_t(time);
  246. struct tm *local_time=localtime(&tt);
  247. //strftime(_time, 22, "%Y-%m-%d %H:%M:%S", local_time);
  248. sprintf(_time, "%d-%02d-%02d %02d:%02d:%02d.%d", local_time->tm_year+1900,
  249. local_time->tm_mon+1, local_time->tm_mday, local_time->tm_hour,
  250. local_time->tm_min, local_time->tm_sec, mill);
  251. return std::string(_time);
  252. }
  253. };
  254. class tool_other
  255. {
  256. public:
  257. static uint64_t to_uint64_cardid(uint32_t type, uint32_t id)
  258. {
  259. return (static_cast<uint64_t>(type)<<32)|id; ////// (类型<<32)|卡号
  260. }
  261. static uint64_t to_event_list_id(int obj_id, EVENT_TYPE ev_type)
  262. {
  263. return (static_cast<uint64_t>(ev_type)<<32)|static_cast<uint64_t>(obj_id);
  264. }
  265. static event_ptr create_event(OBJECT_TYPE obj_type, int obj_id, EVENT_TYPE ev_type)
  266. {
  267. auto ev_ptr = std::make_shared<ya_event>(tool_time::now_to_ms());
  268. ev_ptr->m_ev_type = ev_type;
  269. ev_ptr->m_obj_type = obj_type;
  270. ev_ptr->m_obj_id = static_cast<OBJECT_TYPE>(obj_id);
  271. ev_ptr->m_list_id = to_event_list_id(obj_id, ev_type);
  272. return ev_ptr;
  273. }
  274. static void insert_event(const event_ptr ev_ptr, event_map& out_ev_map)
  275. {
  276. out_ev_map.insert(std::make_pair(ev_ptr->m_list_id, ev_ptr));
  277. }
  278. static void copy_event(const std::shared_ptr<card> card_ptr, event_ptr ev_ptr)
  279. {
  280. ev_ptr->x = card_ptr->x;
  281. ev_ptr->y = card_ptr->y;
  282. if(nullptr!=card_ptr->m_area_hover)
  283. {
  284. ev_ptr->m_area_id = card_ptr->m_area_hover->m_area->id();
  285. }
  286. ev_ptr->m_landmarkid = card_ptr->m_landmarkid;
  287. ev_ptr->m_landmarkdist = card_ptr->m_landmarkdist;
  288. ev_ptr->m_landmarkdirect = card_ptr->m_landmarkdirect;
  289. }
  290. static event_ptr find_event(int obj_id, EVENT_TYPE ev_type, const event_map& ev_map)
  291. {
  292. auto it = ev_map.find(to_event_list_id(obj_id, ev_type));
  293. if(ev_map.end() == it)
  294. {
  295. return nullptr;
  296. }
  297. return it->second;
  298. }
  299. };
  300. class tool_db
  301. {
  302. private:
  303. //void CYAServerDlg::load_his_event_data()
  304. //load_alarm_reader()
  305. static void PushAsync(char* sql)
  306. {
  307. log_debug("PushAsync记录到队列中:%s\n", sql);
  308. if(!sDBConnPool.PushAsync(sql))
  309. {
  310. log_error( "PushAsync记录到队列中失败\n");
  311. }
  312. }
  313. public:
  314. static void save_event(const event_ptr ev_ptr)
  315. {
  316. char sql[LENGTH_SQL] = {'\0'};
  317. std::string _time = tool_time::to_str(ev_ptr->m_cur_time);
  318. sprintf(sql,
  319. "INSERT IGNORE INTO his_event_data(event_id, stat, event_type_id, obj_type_id, obj_id, \
  320. map_id, area_id, limit_value, cur_value, x, y, cur_time, description, \
  321. landmark_id, landmark_dist,direction_mapper_id )\
  322. VALUES(%ld, %d, %d, %d, %ld, %d, %d, %.2f, %.2f, %f, %f, '%s', '%s', %d, %d, %10.3f);",
  323. ev_ptr->get_id(), ev_ptr->m_status, ev_ptr->m_ev_type, ev_ptr->m_obj_type, ev_ptr->m_obj_id,
  324. ev_ptr->m_map_id, ev_ptr->m_area_id, ev_ptr->m_limit_value, ev_ptr->m_cur_value, ev_ptr->x, ev_ptr->y,
  325. _time.c_str(), ev_ptr->m_desc.c_str(),
  326. ev_ptr->m_landmarkid, ev_ptr->m_landmarkdirect, ev_ptr->m_landmarkdist);
  327. PushAsync(sql);
  328. }
  329. static void save_attendance(const std::shared_ptr<card_location_base> card_ptr)
  330. {
  331. char sql[LENGTH_SQL] = {0};
  332. std::string call("add_att_staff");
  333. if(CT_VEHICLE==card_ptr->m_type)//车卡
  334. {
  335. call="add_att_vehicle";
  336. }
  337. auto tt = card_ptr->m_attendance_start_time;
  338. if(AS_ATTENDANCE != card_ptr->m_stat_attendance)//考勤结束时间
  339. {
  340. tt = std::chrono::system_clock::now();
  341. }
  342. std::string _time = tool_time::to_str(tt);
  343. sprintf(sql, "CALL %s(%ld, %d, '%s', '%s', %d, %d, %.3f);", call.c_str(),
  344. card_ptr->m_id, card_ptr->m_type, _time.c_str(), _time.c_str(),
  345. card_ptr->m_landmarkid, card_ptr->m_landmarkdirect, card_ptr->m_landmarkdist);
  346. PushAsync(sql);
  347. }
  348. static void save_his_raw_data(const std::shared_ptr<card> card_ptr)
  349. {
  350. char sql[LENGTH_SQL] = {0};
  351. std::string _time = tool_time::to_str(card_ptr->m_deal_time);
  352. sprintf(sql,
  353. "INSERT IGNORE INTO his_raw_data(card_id, reader_id, antenna_id, reader_stamp, card_stamp, \
  354. fly_time, distance, ranging_type, power_state, accelerate, his_time, rec_time ) \
  355. VALUES(%d, %d, %d, %d, %d, %ld, %4.f, %d, %d, %d, '%s', '%s');",
  356. card_ptr->m_id, card_ptr->m_site_id, card_ptr->m_antenna_id,
  357. card_ptr->m_reader_tickcount, card_ptr->m_time_stamp,
  358. card_ptr->m_flying_time, card_ptr->m_distance, card_ptr->m_ranging_type, card_ptr->m_power_state,
  359. card_ptr->m_accelerate_state,
  360. card_ptr->m_str_his_time.c_str(), card_ptr->m_str_rec_time.c_str());
  361. }
  362. static void save_his_location(const std::shared_ptr<card_location_base> card_ptr)
  363. {
  364. // sprintf_s(_time,
  365. // STR_LEN_TIME,
  366. // "%u-%u-%u %u:%u:%u.%u",
  367. // card->deal_time.wYear,card->deal_time.wMonth,card->deal_time.wDay,
  368. // card->deal_time.wHour,card->deal_time.wMinute,card->deal_time.wSecond,card->deal_time.wMilliseconds);
  369. // if(card->map_id != 0 && card->area_id != 0){
  370. // b_exec = true;
  371. // switch (card->card_type)
  372. // {
  373. // case CT_PERSON:
  374. // sprintf_s(sql, LENGTH_SQL,
  375. // "INSERT IGNORE INTO his_location_staff(card_id, staff_id, cur_time, x, y, z, map_id, area_id, state,speed,mileage, landmark_id, direction_mapper_id, landmark_dist) VALUES(%s, %d, '%s', %.3f, %.3f, %.3f, %d, %d, %d,%.3f,%.4f, %d, %d, %.4f);",
  376. // card->card_id.c_str(), card->id, _time, card->x_offset_after(), card->y_offset_after(), card->z_offset_after(), card->map_id, card->area_id, card->state,card->get_speed(),card->mileage, card->landmark_id, card->landmark_direction, card->landmark_dis);
  377. // break;
  378. // case CT_VEHICLE:
  379. // sprintf_s(sql, LENGTH_SQL,
  380. // "INSERT IGNORE INTO his_location_vehicle(card_id, vehicle_id, cur_time, x, y, z, map_id, area_id, state,speed,mileage, landmark_id, direction_mapper_id, landmark_dist) VALUES(%s, %d, '%s', %.3f, %.3f, %.3f, %d, %d, %d,%.3f,%.4f, %d, %d, %.4f);",
  381. // card->card_id.c_str(), card->id, _time, card->x_offset_after(), card->y_offset_after(), card->z_offset_after(), card->map_id, card->area_id, card->state,card->get_speed(),card->mileage, card->landmark_id, card->landmark_direction, card->landmark_dis);
  382. // break;
  383. // }
  384. // }
  385. }
  386. static void save_his_area_location_enter(const std::shared_ptr<card_location_base> card_ptr)
  387. {
  388. // sprintf_s(_time,
  389. // STR_LEN_TIME,
  390. // "%u-%u-%u %u:%u:%u.%u",
  391. // card->deal_time.wYear,card->deal_time.wMonth,card->deal_time.wDay,
  392. // card->deal_time.wHour,card->deal_time.wMinute,card->deal_time.wSecond,card->deal_time.wMilliseconds);
  393. // if(card->map_id != 0 && card->area_id != 0){
  394. // b_exec = true;
  395. // switch (card->card_type)
  396. // {
  397. // case CT_PERSON:
  398. // sprintf_s(sql, LENGTH_SQL,
  399. // "call add_area_staff(%s, %d, %d, %d, '%s','%s');",
  400. // card->card_id.c_str(), card->id, card->area_id, card->map_id, _time, _time);
  401. // break;
  402. // case CT_VEHICLE:
  403. // sprintf_s(sql, LENGTH_SQL,
  404. // "call add_area_vehicle(%s, %d, %d, %d, '%s','%s');",
  405. // card->card_id.c_str(), card->id, card->area_id, card->map_id, _time, _time);
  406. // break;
  407. // }
  408. // }
  409. }
  410. static void save_his_area_location_leave(const std::shared_ptr<card_location_base> card_ptr)
  411. {
  412. // sprintf_s(_time,
  413. // STR_LEN_TIME,
  414. // "%u-%u-%u %u:%u:%u.%u",
  415. // card->deal_time.wYear,card->deal_time.wMonth,card->deal_time.wDay,
  416. // card->deal_time.wHour,card->deal_time.wMinute,card->deal_time.wSecond,card->deal_time.wMilliseconds);
  417. // if(card->map_id != 0 && card->area_id != 0){
  418. // b_exec = true;
  419. // sprintf_s(_time_ex,
  420. // STR_LEN_TIME,
  421. // "%u-%u-%u %u:%u:%u.%u",
  422. // card->enter_area_time.wYear,card->enter_area_time.wMonth,card->enter_area_time.wDay,
  423. // card->enter_area_time.wHour,card->enter_area_time.wMinute,card->enter_area_time.wSecond,card->enter_area_time.wMilliseconds);
  424. // switch (card->card_type)
  425. // {
  426. // case CT_PERSON:
  427. // sprintf_s(sql, LENGTH_SQL,
  428. // "call add_area_staff(%s, %d, %d, %d, '%s','%s');",
  429. // card->card_id.c_str(), card->id, card->area_id, card->map_id, _time_ex, _time);
  430. // break;
  431. // case CT_VEHICLE:
  432. // sprintf_s(sql, LENGTH_SQL,
  433. // "call add_area_vehicle(%s, %d, %d, %d, '%s','%s');",
  434. // card->card_id.c_str(), card->id, card->area_id, card->map_id, _time_ex, _time);
  435. // break;
  436. // }
  437. // }
  438. }
  439. };
  440. /**
  441. * @brief 线程接口类,重写run函数,改变睡眠时间 sleep_ms
  442. */
  443. class i_thread
  444. {
  445. public:
  446. i_thread()
  447. {
  448. sleep_ms=10*1000;
  449. }
  450. virtual ~i_thread(){}
  451. /**
  452. * @brief 启动线程
  453. */
  454. void start()
  455. {
  456. _thread_flag=true;
  457. _thread_handler=std::thread(&i_thread::thread_proc, this);
  458. }
  459. /**
  460. * @brief 终止线程
  461. */
  462. void stop()
  463. {
  464. _thread_flag=false;
  465. _thread_handler.join();
  466. }
  467. ///线程睡眠时间 毫秒
  468. std::atomic<int> sleep_ms;
  469. protected:
  470. /// 互斥量
  471. std::mutex _mutex;
  472. /**
  473. * @brief 线程函数
  474. */
  475. virtual void run(){}
  476. private:
  477. /// 线程句柄
  478. std::thread _thread_handler;
  479. /// 线程标志
  480. std::atomic<bool> _thread_flag;
  481. void thread_proc()
  482. {
  483. while(_thread_flag)
  484. {
  485. run();
  486. std::this_thread::sleep_for(std::chrono::milliseconds(sleep_ms));
  487. }
  488. }
  489. };
  490. template<typename T>
  491. class singleton_base
  492. {
  493. public:
  494. static T *instance()
  495. {
  496. if(nullptr != _instance)
  497. {
  498. return _instance;
  499. }
  500. std::lock_guard<std::mutex> ll(_mutex_singleton_base);
  501. if(nullptr == _instance)
  502. {
  503. _instance = new(std::nothrow) T();
  504. }
  505. return _instance;
  506. }
  507. protected:
  508. //使继承者无法public构造函数和析构函数
  509. singleton_base(){}
  510. virtual ~singleton_base(){}
  511. private:
  512. //禁止拷贝构造和赋值运算符
  513. singleton_base(const singleton_base& src){}
  514. singleton_base &operator=(const singleton_base& src){}
  515. //它的唯一工作就是在析构函数中析构Singleton的实例,所以private
  516. class Garbo
  517. {
  518. public:
  519. ~Garbo()
  520. {
  521. if (singleton_base::_instance)
  522. {
  523. delete singleton_base::_instance;
  524. singleton_base::_instance = nullptr;
  525. }
  526. }
  527. };
  528. //定义一个静态成员变量,程序结束时,系统会自动调用它的析构函数,我们不需要访问这个变量,所以不需要初始化
  529. static Garbo garbo;
  530. static T *_instance;
  531. static std::mutex _mutex_singleton_base;
  532. };
  533. template<typename T>
  534. T *singleton_base<T>::_instance = nullptr;
  535. template<typename T>
  536. std::mutex singleton_base<T>::_mutex_singleton_base;
  537. #endif // MODULE_CONST_H