前言
demo中，一个线程在写计数++, 另外一个线程在读, 算出tps。遇到了tps算不准的问题。
后来发现是分母上的时间差用秒为单位的缘故(1.5秒和2.4秒用2个time(NULL)减之后都是2秒)。换成微秒时间再乘以1000000就正常了。
开始一度想使用__sync_xx系列函数读取计数时，都同步一下。被同事指出这是在回避问题，尴尬…
其实，有问题时，各种实验都尝试一下。通过实验定位问题后，再解决就容易了。就像本次遇到的tps算不准的问题，如果尝试了__sync_xx后，肯定还是tps不准。那我就尝试下一个实验方法，这被扣上回避问题的帽子，也是真尴尬。只能说，如果开始尝试解决问题的方法对路，实验少做一些而已。
写了一个demo, 验证"一写多读"。实验证明，多个线程读值时，读到的都是写线程写的值，不会读到乱的值。
做这个实验，对linux线程的用法(传线程上下文， 线程启动，使用线程上下文，线程停止)复习了一次。使用linux线程时，设置线程上下文退出标记，让线程检测到退出标记后，自己退出。
找到一个参考资料，对linux线程的用法讲的特别细 => https://computing.llnl.gov/tutorials/pthreads/
demo下载点
运行效果
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.124 : remove_file()] : failed : remove [/var/log/test_time__file_flag_to_shutdown], error[-1] = [No such file or directory]
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.124 : remove_file()] : failed : remove [/var/log/test_time__file_flag_to_thread_run_all], error[-1] = [No such file or directory]
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.124 : remove_file()] : failed : remove [/var/log/test_time__file_flag_to_debug], error[-1] = [No such file or directory]
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.102 : main()] : MAKE_FILE_MACRO__BIN_NAME = [test_time]
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.460 : fn_test()] : >> fn_test()
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.462 : fn_test()] : l_cpu_numbers = 16
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.465 : fn_test()] : l_thread_numbers = 32
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.507 : fn_test()] : ok : pthread[0] create
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.507 : fn_test()] : ok : pthread[1] create
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.507 : fn_test()] : ok : pthread[2] create
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.507 : fn_test()] : ok : pthread[3] create
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.348 : thread_proc_write()] : >> thread_proc_write[0]
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.396 : thread_proc_read()] : >> thread_proc_read[1], wait FILE_FLAG_THREAD_RUN_ALL
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.396 : thread_proc_read()] : >> thread_proc_read[2], wait FILE_FLAG_THREAD_RUN_ALL
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.507 : fn_test()] : ok : pthread[4] create
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.507 : fn_test()] : ok : pthread[5] create
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.396 : thread_proc_read()] : >> thread_proc_read[3], wait FILE_FLAG_THREAD_RUN_ALL
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.507 : fn_test()] : ok : pthread[6] create
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.507 : fn_test()] : ok : pthread[7] create
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.396 : thread_proc_read()] : >> thread_proc_read[5], wait FILE_FLAG_THREAD_RUN_ALL
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.507 : fn_test()] : ok : pthread[8] create
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.396 : thread_proc_read()] : >> thread_proc_read[6], wait FILE_FLAG_THREAD_RUN_ALL
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.507 : fn_test()] : ok : pthread[9] create
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.396 : thread_proc_read()] : >> thread_proc_read[7], wait FILE_FLAG_THREAD_RUN_ALL
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.507 : fn_test()] : ok : pthread[10] create
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.396 : thread_proc_read()] : >> thread_proc_read[4], wait FILE_FLAG_THREAD_RUN_ALL
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.396 : thread_proc_read()] : >> thread_proc_read[11], wait FILE_FLAG_THREAD_RUN_ALL
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.396 : thread_proc_read()] : >> thread_proc_read[8], wait FILE_FLAG_THREAD_RUN_ALL
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.396 : thread_proc_read()] : >> thread_proc_read[10], wait FILE_FLAG_THREAD_RUN_ALL
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.507 : fn_test()] : ok : pthread[11] create
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.396 : thread_proc_read()] : >> thread_proc_read[9], wait FILE_FLAG_THREAD_RUN_ALL
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.507 : fn_test()] : ok : pthread[12] create
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.396 : thread_proc_read()] : >> thread_proc_read[12], wait FILE_FLAG_THREAD_RUN_ALL
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.507 : fn_test()] : ok : pthread[13] create
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.396 : thread_proc_read()] : >> thread_proc_read[13], wait FILE_FLAG_THREAD_RUN_ALL
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.507 : fn_test()] : ok : pthread[14] create
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.396 : thread_proc_read()] : >> thread_proc_read[14], wait FILE_FLAG_THREAD_RUN_ALL
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.507 : fn_test()] : ok : pthread[15] create
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.396 : thread_proc_read()] : >> thread_proc_read[15], wait FILE_FLAG_THREAD_RUN_ALL
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.507 : fn_test()] : ok : pthread[16] create
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.396 : thread_proc_read()] : >> thread_proc_read[16], wait FILE_FLAG_THREAD_RUN_ALL
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.507 : fn_test()] : ok : pthread[17] create
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.396 : thread_proc_read()] : >> thread_proc_read[17], wait FILE_FLAG_THREAD_RUN_ALL
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.396 : thread_proc_read()] : >> thread_proc_read[18], wait FILE_FLAG_THREAD_RUN_ALL
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.507 : fn_test()] : ok : pthread[18] create
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.507 : fn_test()] : ok : pthread[19] create
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.396 : thread_proc_read()] : >> thread_proc_read[19], wait FILE_FLAG_THREAD_RUN_ALL
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.507 : fn_test()] : ok : pthread[20] create
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.396 : thread_proc_read()] : >> thread_proc_read[20], wait FILE_FLAG_THREAD_RUN_ALL
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.507 : fn_test()] : ok : pthread[21] create
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.396 : thread_proc_read()] : >> thread_proc_read[21], wait FILE_FLAG_THREAD_RUN_ALL
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.396 : thread_proc_read()] : >> thread_proc_read[22], wait FILE_FLAG_THREAD_RUN_ALL
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.507 : fn_test()] : ok : pthread[22] create
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.507 : fn_test()] : ok : pthread[23] create
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.396 : thread_proc_read()] : >> thread_proc_read[23], wait FILE_FLAG_THREAD_RUN_ALL
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.396 : thread_proc_read()] : >> thread_proc_read[24], wait FILE_FLAG_THREAD_RUN_ALL
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.507 : fn_test()] : ok : pthread[24] create
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.507 : fn_test()] : ok : pthread[25] create
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.396 : thread_proc_read()] : >> thread_proc_read[25], wait FILE_FLAG_THREAD_RUN_ALL
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.507 : fn_test()] : ok : pthread[26] create
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.396 : thread_proc_read()] : >> thread_proc_read[26], wait FILE_FLAG_THREAD_RUN_ALL
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.507 : fn_test()] : ok : pthread[27] create
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.396 : thread_proc_read()] : >> thread_proc_read[27], wait FILE_FLAG_THREAD_RUN_ALL
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.507 : fn_test()] : ok : pthread[28] create
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.396 : thread_proc_read()] : >> thread_proc_read[28], wait FILE_FLAG_THREAD_RUN_ALL
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.507 : fn_test()] : ok : pthread[29] create
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.396 : thread_proc_read()] : >> thread_proc_read[29], wait FILE_FLAG_THREAD_RUN_ALL
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.507 : fn_test()] : ok : pthread[30] create
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.396 : thread_proc_read()] : >> thread_proc_read[30], wait FILE_FLAG_THREAD_RUN_ALL
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.280 : thread_proc_env_check()] : >> thread_proc_env_check[31]
Oct 16 06:02:59 debian8 test_time: [MY_LOGD : main.cpp.507 : fn_test()] : ok : pthread[31] create
...
Oct 16 06:03:58 debian8 test_time: [MY_LOGD : main.cpp.401 : thread_proc_read()] : >> thread_proc_read[5] find FILE_FLAG_THREAD_RUN_ALL, will be run
Oct 16 06:03:58 debian8 test_time: [MY_LOGD : main.cpp.353 : thread_proc_write()] : >> thread_proc_write[0] find FILE_FLAG_THREAD_RUN_ALL, will be run
Oct 16 06:03:58 debian8 test_time: [MY_LOGD : main.cpp.401 : thread_proc_read()] : >> thread_proc_read[10] find FILE_FLAG_THREAD_RUN_ALL, will be run
Oct 16 06:03:58 debian8 test_time: [MY_LOGD : main.cpp.401 : thread_proc_read()] : >> thread_proc_read[8] find FILE_FLAG_THREAD_RUN_ALL, will be run
Oct 16 06:03:58 debian8 test_time: [MY_LOGD : main.cpp.401 : thread_proc_read()] : >> thread_proc_read[13] find FILE_FLAG_THREAD_RUN_ALL, will be run
Oct 16 06:03:58 debian8 test_time: [MY_LOGD : main.cpp.401 : thread_proc_read()] : >> thread_proc_read[2] find FILE_FLAG_THREAD_RUN_ALL, will be run
Oct 16 06:03:58 debian8 test_time: [MY_LOGD : main.cpp.401 : thread_proc_read()] : >> thread_proc_read[1] find FILE_FLAG_THREAD_RUN_ALL, will be run
Oct 16 06:03:58 debian8 test_time: [MY_LOGD : main.cpp.401 : thread_proc_read()] : >> thread_proc_read[6] find FILE_FLAG_THREAD_RUN_ALL, will be run
Oct 16 06:03:58 debian8 test_time: [MY_LOGD : main.cpp.401 : thread_proc_read()] : >> thread_proc_read[9] find FILE_FLAG_THREAD_RUN_ALL, will be run
Oct 16 06:03:58 debian8 test_time: [MY_LOGD : main.cpp.401 : thread_proc_read()] : >> thread_proc_read[16] find FILE_FLAG_THREAD_RUN_ALL, will be run
Oct 16 06:03:58 debian8 test_time: [MY_LOGD : main.cpp.401 : thread_proc_read()] : >> thread_proc_read[4] find FILE_FLAG_THREAD_RUN_ALL, will be run
Oct 16 06:03:58 debian8 test_time: [MY_LOGD : main.cpp.401 : thread_proc_read()] : >> thread_proc_read[20] find FILE_FLAG_THREAD_RUN_ALL, will be run
...
Oct 16 06:05:50 debian8 test_time: [MY_LOGD : main.cpp.243 : calc_tps_and_show()] : thread[6] tps = 2013, ull_cnt_prev = 217230, ull_time_prev = 1539641149002014
Oct 16 06:05:50 debian8 test_time: [MY_LOGD : main.cpp.243 : calc_tps_and_show()] : thread[19] tps = 2013, ull_cnt_prev = 217231, ull_time_prev = 1539641149002510
Oct 16 06:05:50 debian8 test_time: [MY_LOGD : main.cpp.243 : calc_tps_and_show()] : thread[4] tps = 2014, ull_cnt_prev = 217232, ull_time_prev = 1539641149003070
Oct 16 06:05:50 debian8 test_time: [MY_LOGD : main.cpp.243 : calc_tps_and_show()] : thread[1] tps = 2012, ull_cnt_prev = 217233, ull_time_prev = 1539641149003532
Oct 16 06:05:50 debian8 test_time: [MY_LOGD : main.cpp.243 : calc_tps_and_show()] : thread[24] tps = 2012, ull_cnt_prev = 217233, ull_time_prev = 1539641149003512
Oct 16 06:05:50 debian8 test_time: [MY_LOGD : main.cpp.243 : calc_tps_and_show()] : thread[9] tps = 2013, ull_cnt_prev = 217234, ull_time_prev = 1539641149003998
Oct 16 06:05:50 debian8 test_time: [MY_LOGD : main.cpp.243 : calc_tps_and_show()] : thread[17] tps = 2012, ull_cnt_prev = 217236, ull_time_prev = 1539641149004498
Oct 16 06:05:50 debian8 test_time: [MY_LOGD : main.cpp.243 : calc_tps_and_show()] : thread[26] tps = 2013, ull_cnt_prev = 217238, ull_time_prev = 1539641149006115
Oct 16 06:05:50 debian8 test_time: [MY_LOGD : main.cpp.243 : calc_tps_and_show()] : thread[27] tps = 2014, ull_cnt_prev = 217238, ull_time_prev = 1539641149006145
Oct 16 06:05:50 debian8 test_time: [MY_LOGD : main.cpp.243 : calc_tps_and_show()] : thread[14] tps = 2013, ull_cnt_prev = 217239, ull_time_prev = 1539641149006304
Oct 16 06:05:50 debian8 test_time: [MY_LOGD : main.cpp.243 : calc_tps_and_show()] : thread[10] tps = 2013, ull_cnt_prev = 217239, ull_time_prev = 1539641149006256
Oct 16 06:05:50 debian8 test_time: [MY_LOGD : main.cpp.243 : calc_tps_and_show()] : thread[25] tps = 2013, ull_cnt_prev = 217240, ull_time_prev = 1539641149006591
...
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.286 : thread_proc_env_check()] : thread_proc_env_check[31] recv quit command, stop other thread ...
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.300 : thread_proc_env_check()] : set _p_ctx->p_thread_ctx_parent[0].b_request_quit_thread = true
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.300 : thread_proc_env_check()] : set _p_ctx->p_thread_ctx_parent[1].b_request_quit_thread = true
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.300 : thread_proc_env_check()] : set _p_ctx->p_thread_ctx_parent[2].b_request_quit_thread = true
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.300 : thread_proc_env_check()] : set _p_ctx->p_thread_ctx_parent[3].b_request_quit_thread = true
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.300 : thread_proc_env_check()] : set _p_ctx->p_thread_ctx_parent[4].b_request_quit_thread = true
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.300 : thread_proc_env_check()] : set _p_ctx->p_thread_ctx_parent[5].b_request_quit_thread = true
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.300 : thread_proc_env_check()] : set _p_ctx->p_thread_ctx_parent[6].b_request_quit_thread = true
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.300 : thread_proc_env_check()] : set _p_ctx->p_thread_ctx_parent[7].b_request_quit_thread = true
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.300 : thread_proc_env_check()] : set _p_ctx->p_thread_ctx_parent[8].b_request_quit_thread = true
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.300 : thread_proc_env_check()] : set _p_ctx->p_thread_ctx_parent[9].b_request_quit_thread = true
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.300 : thread_proc_env_check()] : set _p_ctx->p_thread_ctx_parent[10].b_request_quit_thread = true
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.300 : thread_proc_env_check()] : set _p_ctx->p_thread_ctx_parent[11].b_request_quit_thread = true
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.300 : thread_proc_env_check()] : set _p_ctx->p_thread_ctx_parent[12].b_request_quit_thread = true
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.300 : thread_proc_env_check()] : set _p_ctx->p_thread_ctx_parent[13].b_request_quit_thread = true
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.300 : thread_proc_env_check()] : set _p_ctx->p_thread_ctx_parent[14].b_request_quit_thread = true
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.362 : thread_proc_write()] : >> thread_proc_write[0] find b_request_quit_thread, will be quit
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.375 : thread_proc_write()] : << thread_proc_write[0]
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.300 : thread_proc_env_check()] : set _p_ctx->p_thread_ctx_parent[15].b_request_quit_thread = true
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.300 : thread_proc_env_check()] : set _p_ctx->p_thread_ctx_parent[16].b_request_quit_thread = true
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.300 : thread_proc_env_check()] : set _p_ctx->p_thread_ctx_parent[17].b_request_quit_thread = true
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.300 : thread_proc_env_check()] : set _p_ctx->p_thread_ctx_parent[18].b_request_quit_thread = true
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.300 : thread_proc_env_check()] : set _p_ctx->p_thread_ctx_parent[19].b_request_quit_thread = true
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.300 : thread_proc_env_check()] : set _p_ctx->p_thread_ctx_parent[20].b_request_quit_thread = true
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.300 : thread_proc_env_check()] : set _p_ctx->p_thread_ctx_parent[21].b_request_quit_thread = true
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.300 : thread_proc_env_check()] : set _p_ctx->p_thread_ctx_parent[22].b_request_quit_thread = true
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.300 : thread_proc_env_check()] : set _p_ctx->p_thread_ctx_parent[23].b_request_quit_thread = true
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.300 : thread_proc_env_check()] : set _p_ctx->p_thread_ctx_parent[24].b_request_quit_thread = true
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.300 : thread_proc_env_check()] : set _p_ctx->p_thread_ctx_parent[25].b_request_quit_thread = true
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.300 : thread_proc_env_check()] : set _p_ctx->p_thread_ctx_parent[26].b_request_quit_thread = true
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.300 : thread_proc_env_check()] : set _p_ctx->p_thread_ctx_parent[27].b_request_quit_thread = true
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.300 : thread_proc_env_check()] : set _p_ctx->p_thread_ctx_parent[28].b_request_quit_thread = true
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.300 : thread_proc_env_check()] : set _p_ctx->p_thread_ctx_parent[29].b_request_quit_thread = true
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.300 : thread_proc_env_check()] : set _p_ctx->p_thread_ctx_parent[30].b_request_quit_thread = true
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.313 : thread_proc_env_check()] : >> wait _p_ctx->p_thread_ctx_parent[1].h_thread end
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.418 : thread_proc_read()] : >> thread_proc_read[11] find b_request_quit_thread, will be quit
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.418 : thread_proc_read()] : >> thread_proc_read[4] find b_request_quit_thread, will be quit
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.431 : thread_proc_read()] : << thread_proc_read[11]
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.431 : thread_proc_read()] : << thread_proc_read[4]
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.418 : thread_proc_read()] : >> thread_proc_read[22] find b_request_quit_thread, will be quit
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.431 : thread_proc_read()] : << thread_proc_read[22]
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.418 : thread_proc_read()] : >> thread_proc_read[12] find b_request_quit_thread, will be quit
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.431 : thread_proc_read()] : << thread_proc_read[12]
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.418 : thread_proc_read()] : >> thread_proc_read[19] find b_request_quit_thread, will be quit
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.431 : thread_proc_read()] : << thread_proc_read[19]
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.418 : thread_proc_read()] : >> thread_proc_read[18] find b_request_quit_thread, will be quit
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.431 : thread_proc_read()] : << thread_proc_read[18]
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.418 : thread_proc_read()] : >> thread_proc_read[9] find b_request_quit_thread, will be quit
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.431 : thread_proc_read()] : << thread_proc_read[9]
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.418 : thread_proc_read()] : >> thread_proc_read[13] find b_request_quit_thread, will be quit
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.431 : thread_proc_read()] : << thread_proc_read[13]
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.418 : thread_proc_read()] : >> thread_proc_read[25] find b_request_quit_thread, will be quit
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.431 : thread_proc_read()] : << thread_proc_read[25]
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.418 : thread_proc_read()] : >> thread_proc_read[21] find b_request_quit_thread, will be quit
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.431 : thread_proc_read()] : << thread_proc_read[21]
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.418 : thread_proc_read()] : >> thread_proc_read[26] find b_request_quit_thread, will be quit
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.431 : thread_proc_read()] : << thread_proc_read[26]
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.418 : thread_proc_read()] : >> thread_proc_read[15] find b_request_quit_thread, will be quit
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.431 : thread_proc_read()] : << thread_proc_read[15]
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.418 : thread_proc_read()] : >> thread_proc_read[10] find b_request_quit_thread, will be quit
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.431 : thread_proc_read()] : << thread_proc_read[10]
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.418 : thread_proc_read()] : >> thread_proc_read[20] find b_request_quit_thread, will be quit
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.431 : thread_proc_read()] : << thread_proc_read[20]
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.418 : thread_proc_read()] : >> thread_proc_read[6] find b_request_quit_thread, will be quit
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.431 : thread_proc_read()] : << thread_proc_read[6]
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.418 : thread_proc_read()] : >> thread_proc_read[16] find b_request_quit_thread, will be quit
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.431 : thread_proc_read()] : << thread_proc_read[16]
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.418 : thread_proc_read()] : >> thread_proc_read[1] find b_request_quit_thread, will be quit
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.431 : thread_proc_read()] : << thread_proc_read[1]
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.418 : thread_proc_read()] : >> thread_proc_read[24] find b_request_quit_thread, will be quit
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.431 : thread_proc_read()] : << thread_proc_read[24]
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.418 : thread_proc_read()] : >> thread_proc_read[23] find b_request_quit_thread, will be quit
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.431 : thread_proc_read()] : << thread_proc_read[23]
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.418 : thread_proc_read()] : >> thread_proc_read[5] find b_request_quit_thread, will be quit
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.431 : thread_proc_read()] : << thread_proc_read[5]
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.418 : thread_proc_read()] : >> thread_proc_read[30] find b_request_quit_thread, will be quit
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.431 : thread_proc_read()] : << thread_proc_read[30]
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.418 : thread_proc_read()] : >> thread_proc_read[29] find b_request_quit_thread, will be quit
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.431 : thread_proc_read()] : << thread_proc_read[29]
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.418 : thread_proc_read()] : >> thread_proc_read[17] find b_request_quit_thread, will be quit
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.431 : thread_proc_read()] : << thread_proc_read[17]
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.418 : thread_proc_read()] : >> thread_proc_read[27] find b_request_quit_thread, will be quit
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.431 : thread_proc_read()] : << thread_proc_read[27]
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.418 : thread_proc_read()] : >> thread_proc_read[2] find b_request_quit_thread, will be quit
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.431 : thread_proc_read()] : << thread_proc_read[2]
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.418 : thread_proc_read()] : >> thread_proc_read[28] find b_request_quit_thread, will be quit
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.431 : thread_proc_read()] : << thread_proc_read[28]
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.418 : thread_proc_read()] : >> thread_proc_read[3] find b_request_quit_thread, will be quit
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.431 : thread_proc_read()] : << thread_proc_read[3]
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.315 : thread_proc_env_check()] : << wait _p_ctx->p_thread_ctx_parent[1].h_thread end
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.313 : thread_proc_env_check()] : >> wait _p_ctx->p_thread_ctx_parent[7].h_thread end
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.418 : thread_proc_read()] : >> thread_proc_read[8] find b_request_quit_thread, will be quit
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.431 : thread_proc_read()] : << thread_proc_read[8]
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.418 : thread_proc_read()] : >> thread_proc_read[7] find b_request_quit_thread, will be quit
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.431 : thread_proc_read()] : << thread_proc_read[7]
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.418 : thread_proc_read()] : >> thread_proc_read[14] find b_request_quit_thread, will be quit
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.431 : thread_proc_read()] : << thread_proc_read[14]
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.315 : thread_proc_env_check()] : << wait _p_ctx->p_thread_ctx_parent[7].h_thread end
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.327 : thread_proc_env_check()] : << thread_proc_env_check[31]
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.529 : fn_test()] : ok : stop thread_env_check
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.127 : remove_file()] : ok : remove [/var/log/test_time__file_flag_to_shutdown]
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.127 : remove_file()] : ok : remove [/var/log/test_time__file_flag_to_thread_run_all]
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.124 : remove_file()] : failed : remove [/var/log/test_time__file_flag_to_debug], error[-1] = [No such file or directory]
Oct 16 06:06:40 debian8 test_time: [MY_LOGD : main.cpp.110 : main()] : THE END
实验
// @file main.cpp
// @brief 测试时间取值(us)和计数(一写多读)
// @note
// 实验环境:
// debian8.8
//
// 调试:
// when debug, see log => tail -f /var/log/messages | grep MY_LOGD
#include <stdlib.h>
#include <stdio.h>
#include <stdint.h>
#include <string.h>
#include <unistd.h>
#include <limits.h>
#include <signal.h>
#include <errno.h>
#include <sys/time.h>
#include <pthread.h>
#include <string>
#include "const_define.h"
// 线程自己的私有数据
typedef struct _tag_thread_private_data {
long l_tps; // 算出的当前tps值
ull ull_time_prev; // 上一次记录tps的时间
ull ull_cnt_prev; // 上一次记录的计数器值
_tag_thread_private_data() {
l_tps = 0;
ull_time_prev = 0;
ull_cnt_prev = 0;
}
}TAG_THREAD_PRIVATE_DATA;
// 线程之间共享的数据
typedef struct _tag_thread_share_data {
ull ull_cnt; // 一写多读的计数器
_tag_thread_share_data() {
ull_cnt = 0;
}
}TAG_THREAD_SHARE_DATA;
// 线程上下文
typedef struct _tag_thread_context {
bool b_init_h_thread; // h_thread is init ?
pthread_t h_thread; // 线程句柄
int i_thread_sn; // 线程号码
_tag_thread_context* p_thread_ctx_parent; // 总的线程上下文, 用于环境检测线程停止其他线程
long l_thread_numbers; // p_thread_ctx_parent 对应的线程数量(p_thread_ctx_parent[]的组数size)
TAG_THREAD_SHARE_DATA* p_share_data; // 线程之间共享的数据结构
TAG_THREAD_PRIVATE_DATA thread_private_data; // 线程的私有数据
bool b_request_quit_thread; // 请求退出线程
_tag_thread_context() {
// h_thread = NULL; // pthread_t isn't pointer type, can't set to NULL
b_init_h_thread = false;
i_thread_sn = -1;
p_thread_ctx_parent = NULL;
l_thread_numbers = 0;
p_share_data = NULL;
b_request_quit_thread = false;
}
} TAG_THREAD_CONTEXT;
void init(const char* psz_log_owner_name);
void uninit();
void proc_sig_term(int num);
int fn_test(int argc, char** argv);
bool is_file_exist(const char* psz_file_path_name, int& i_err_code, std::string& str_err_msg);
void read_and_show_context(TAG_THREAD_CONTEXT* p_ctx);
void write_and_show_context(TAG_THREAD_CONTEXT* p_ctx);
void show_ull_by_time(const char* psz_tip, ull ull_val);
void calc_tps_and_show(TAG_THREAD_CONTEXT* p_ctx);
void remove_flag_file();
void remove_file(const char* psz_file_path_name);
typedef void* (*PFN_thread_proc_env_check)(void* p_ctx);
void* thread_proc_env_check(void* p_ctx);
void* thread_proc_write(void* p_ctx);
void* thread_proc_read(void* p_ctx);
int main(int argc, char** argv)
{
char sz_buf[MAX_MSG_LENGTH] = {'\0'};
#ifdef MAKE_FILE_MACRO__BIN_NAME
sprintf(sz_buf, "%s", MAKE_FILE_MACRO__BIN_NAME);
init(sz_buf);
MYLOG_D("MAKE_FILE_MACRO__BIN_NAME = [%s]\n", MAKE_FILE_MACRO__BIN_NAME);
#else
init(NULL);
#endif // #ifdef MAKE_FILE_MACRO__BIN_NAME
fn_test(argc, argv);
uninit();
MYLOG_D("THE END\n");
return EXIT_SUCCESS;
}
void remove_file(const char* psz_file_path_name)
{
int i_rc = 0;
if (NULL != psz_file_path_name) {
i_rc = remove(psz_file_path_name);
if (EOK != i_rc) {
MYLOG_D("failed : remove [%s], error[%d] = [%s]\n",
psz_file_path_name,
i_rc,
strerror(errno));
} else {
MYLOG_D("ok : remove [%s]\n",
psz_file_path_name);
}
}
}
void remove_flag_file()
{
remove_file(FILE_FLAG_SHUTDOWN);
remove_file(FILE_FLAG_THREAD_RUN_ALL);
remove_file(FILE_FLAG_DEBUG);
}
void uninit()
{
remove_flag_file();
}
void proc_sig_term(int num)
{
MYLOG_D("SIGTERM = %d, num = %d\n", SIGTERM, num);
MYLOG_D("maybe can do some clean task before quit\n");
exit(1);
}
void init(const char* psz_log_owner_name)
{
int i = 0;
MYLOG_D("%s\n", TITLE_LINE80);
MYLOG_D("%s %s %s\n",
(NULL != psz_log_owner_name) ? psz_log_owner_name : "test_prog",
PROG_VER,
RELEASE_TIME);
MYLOG_D("%s\n", TITLE_LINE80);
// daemon(0, 0);
// clear screen (print 25 empty line)
for (i = 0; i < 25; i++) {
MYLOG_D("\n");
}
signal(SIGTERM, proc_sig_term);
remove_flag_file();
}
bool is_file_exist(const char* psz_file_path_name, int& i_err_code, std::string& str_err_msg)
{
bool b_rc = false;
int i_rc = -1;
do {
if ((NULL == psz_file_path_name)
|| (0 == strlen(psz_file_path_name))) {
i_err_code = -1;
str_err_msg = "param 1 error";
break;
}
i_rc = access(psz_file_path_name, F_OK);
if (0 != i_rc) {
i_err_code = errno;
str_err_msg = strerror(i_err_code);
} else {
b_rc = true;
}
} while (0);
return b_rc;
}
void show_ull_by_time(const char* psz_tip, ull ull_val)
{
struct timeval tv_now;
ull ull_time_now = 0;
gettimeofday(&tv_now, NULL);
ull_time_now = tv_now.tv_sec;
ull_time_now *= 1000000;
ull_time_now += tv_now.tv_usec;
MYLOG_D("%s : ull_val = %llu, time now = %llu, %ld.%ld\n",
(NULL != psz_tip) ? psz_tip : "NULL",
ull_val,
ull_time_now,
tv_now.tv_sec,
tv_now.tv_usec);
}
void calc_tps_and_show(TAG_THREAD_CONTEXT* p_ctx)
{
struct timeval tv_now;
ull ull_time_now = 0;
ull ull_cnt_val_by_writer = 0;
if (NULL != p_ctx) {
gettimeofday(&tv_now, NULL);
ull_time_now = tv_now.tv_sec;
ull_time_now *= 1000000;
ull_time_now += tv_now.tv_usec;
ull_cnt_val_by_writer = p_ctx->p_thread_ctx_parent->p_share_data->ull_cnt;
if ((p_ctx->thread_private_data.ull_cnt_prev > 0)
&& (p_ctx->thread_private_data.ull_time_prev > 0))
{
p_ctx->thread_private_data.l_tps =
1.0f * (ull_cnt_val_by_writer - p_ctx->thread_private_data.ull_cnt_prev)
/ (ull_time_now - p_ctx->thread_private_data.ull_time_prev) * 1000000;
MYLOG_D("thread[%d] tps = %ld, ull_cnt_prev = %llu, ull_time_prev = %llu",
p_ctx->i_thread_sn,
p_ctx->thread_private_data.l_tps,
p_ctx->thread_private_data.ull_cnt_prev,
p_ctx->thread_private_data.ull_time_prev);
}
p_ctx->thread_private_data.ull_cnt_prev = ull_cnt_val_by_writer;
p_ctx->thread_private_data.ull_time_prev = ull_time_now;
}
}
void read_and_show_context(TAG_THREAD_CONTEXT* p_ctx)
{
TAG_THREAD_CONTEXT* _p_ctx = (TAG_THREAD_CONTEXT*)p_ctx;
if ((NULL != _p_ctx) && (NULL != _p_ctx->p_share_data)) {
show_ull_by_time("rd", _p_ctx->p_share_data->ull_cnt);
}
}
void write_and_show_context(TAG_THREAD_CONTEXT* p_ctx)
{
TAG_THREAD_CONTEXT* _p_ctx = (TAG_THREAD_CONTEXT*)p_ctx;
if ((NULL != _p_ctx) && (NULL != _p_ctx->p_share_data)) {
_p_ctx->p_share_data->ull_cnt++;
show_ull_by_time("wr", _p_ctx->p_share_data->ull_cnt);
}
}
void* thread_proc_env_check(void* p_ctx)
{
TAG_THREAD_CONTEXT* _p_ctx = (TAG_THREAD_CONTEXT*)p_ctx;
int i = 0;
do {
if (NULL == _p_ctx) {
break;
}
MYLOG_D(">> thread_proc_env_check[%d]\n", _p_ctx->i_thread_sn);
do {
if (_p_ctx->b_request_quit_thread) {
// 等主线程来停止环境检测线程, 环境检测线程再去停止其他工作线程
MYLOG_D("thread_proc_env_check[%d] recv quit command, stop other thread ...\n", _p_ctx->i_thread_sn);
// close read thread
// set quit command to all other thread
for (i = 0; i < _p_ctx->l_thread_numbers; i++) {
if (_p_ctx->p_thread_ctx_parent[i].i_thread_sn == _p_ctx->i_thread_sn) {
// 这些线程也包含本线程, 只处理其他线程
continue;
}
if (pthread_kill(_p_ctx->p_thread_ctx_parent[i].h_thread, 0) == 0) {
// if thread is still active, first set thread quit falg
// thread will quit by p_thread_ctx[i].b_request_quit_thread
_p_ctx->p_thread_ctx_parent[i].b_request_quit_thread = true;
MYLOG_D("set _p_ctx->p_thread_ctx_parent[%d].b_request_quit_thread = true\n", i);
}
}
// wait all other thread over quit by them slef
for (i = 0; i < _p_ctx->l_thread_numbers; i++) {
if (_p_ctx->p_thread_ctx_parent[i].i_thread_sn == _p_ctx->i_thread_sn) {
// 这些线程也包含本线程, 只处理其他线程
continue;
}
if (pthread_kill(_p_ctx->p_thread_ctx_parent[i].h_thread, 0) == 0) {
// then wait it exit
MYLOG_D(">> wait _p_ctx->p_thread_ctx_parent[%d].h_thread end\n", i);
pthread_join(_p_ctx->p_thread_ctx_parent[i].h_thread, NULL);
MYLOG_D("<< wait _p_ctx->p_thread_ctx_parent[%d].h_thread end\n", i);
}
}
break;
}
usleep(US_SLEEP_VAL_FO_READER);
} while (1);
} while (0);
if (NULL != _p_ctx) {
MYLOG_D("<< thread_proc_env_check[%d]\n", _p_ctx->i_thread_sn);
pthread_exit((void*)(intptr_t)_p_ctx->i_thread_sn);
} else {
MYLOG_D("<< thread_proc_env_check\n");
pthread_exit(NULL);
}
return NULL;
}
void* thread_proc_write(void* p_ctx)
{
TAG_THREAD_CONTEXT* _p_ctx = (TAG_THREAD_CONTEXT*)p_ctx;
int i_err_code = 0;
std::string str_err = "";
do {
if (NULL == _p_ctx) {
break;
}
MYLOG_D(">> thread_proc_write[%d]\n", _p_ctx->i_thread_sn);
// wait thread run flag
do {
if (is_file_exist(FILE_FLAG_THREAD_RUN_ALL, i_err_code, str_err)) {
MYLOG_D(">> thread_proc_write[%d] find FILE_FLAG_THREAD_RUN_ALL, will be run\n", _p_ctx->i_thread_sn);
break;
}
usleep(US_SLEEP_VAL_FO_READER);
} while (1);
do {
if (_p_ctx->b_request_quit_thread) {
MYLOG_D(">> thread_proc_write[%d] find b_request_quit_thread, will be quit\n", _p_ctx->i_thread_sn);
break;
}
// write_and_show_context(_p_ctx);
_p_ctx->p_thread_ctx_parent->p_share_data->ull_cnt++;
usleep(US_SLEEP_VAL_FO_WRITER); // 计数增加的频率远高于计数读的频率
} while (1);
} while (0);
if (NULL != _p_ctx) {
MYLOG_D("<< thread_proc_write[%d]\n", _p_ctx->i_thread_sn);
pthread_exit((void*)(intptr_t)_p_ctx->i_thread_sn);
} else {
MYLOG_D("<< thread_proc_write\n");
pthread_exit(NULL);
}
return NULL;
}
void* thread_proc_read(void* p_ctx)
{
TAG_THREAD_CONTEXT* _p_ctx = (TAG_THREAD_CONTEXT*)p_ctx;
int i_err_code = 0;
std::string str_err = "";
do {
if (NULL == _p_ctx) {
break;
}
MYLOG_D(">> thread_proc_read[%d], wait FILE_FLAG_THREAD_RUN_ALL\n", _p_ctx->i_thread_sn);
// wait thread run flag
do {
if (is_file_exist(FILE_FLAG_THREAD_RUN_ALL, i_err_code, str_err)) {
MYLOG_D(">> thread_proc_read[%d] find FILE_FLAG_THREAD_RUN_ALL, will be run\n", _p_ctx->i_thread_sn);
break;
}
usleep(US_SLEEP_VAL_FO_READER);
} while (1);
do {
if (1 == _p_ctx->i_thread_sn) {
if (is_file_exist(FILE_FLAG_DEBUG, i_err_code, str_err)) {
if (1 == _p_ctx->i_thread_sn) {
MYLOG_D(""); // for debug #1 thread
}
}
}
if (_p_ctx->b_request_quit_thread) {
MYLOG_D(">> thread_proc_read[%d] find b_request_quit_thread, will be quit\n", _p_ctx->i_thread_sn);
break;
}
// read_and_show_context(_p_ctx);
calc_tps_and_show(_p_ctx);
usleep(US_SLEEP_VAL_FO_READER);
} while (1);
} while (0);
if (NULL != _p_ctx) {
MYLOG_D("<< thread_proc_read[%d]\n", _p_ctx->i_thread_sn);
pthread_exit((void*)(intptr_t)_p_ctx->i_thread_sn);
} else {
MYLOG_D("<< thread_proc_read\n");
pthread_exit(NULL);
}
return NULL;
}
// @ref https://computing.llnl.gov/tutorials/pthreads/
// POSIX Threads Programming
int fn_test(int argc, char** argv)
{
bool b_rc = false;
int i_err_code = 0;
long l_cpu_numbers = 0;
long l_thread_numbers = 0;
std::string str_err = "";
TAG_THREAD_CONTEXT* p_thread_ctx = NULL;
TAG_THREAD_SHARE_DATA share_data;
pthread_attr_t thread_attr;
int i = 0;
int i_thread_sn_env_check = 0; // 环境检测线程的号码
PFN_thread_proc_env_check pfn_thread_proc_now = NULL;
MYLOG_D(">> fn_test()\n");
l_cpu_numbers = sysconf(_SC_NPROCESSORS_ONLN);
MYLOG_D("l_cpu_numbers = %ld\n", l_cpu_numbers);
l_thread_numbers = l_cpu_numbers * 2;
MYLOG_D("l_thread_numbers = %ld\n", l_thread_numbers);
pthread_attr_init(&thread_attr);
pthread_attr_setdetachstate(&thread_attr, PTHREAD_CREATE_JOINABLE);
// create thread，
p_thread_ctx = new TAG_THREAD_CONTEXT[l_thread_numbers];
for (i = 0; i < l_thread_numbers; i++) {
p_thread_ctx[i].p_thread_ctx_parent = p_thread_ctx;
p_thread_ctx[i].l_thread_numbers = l_thread_numbers;
p_thread_ctx[i].p_share_data = &share_data;
p_thread_ctx[i].i_thread_sn = i;
if (i == (l_thread_numbers - 1)) {
// 最后一个线程
// 最后一个线程是检测线程(检测是否要退出, 如果检测操作放在主线程中, 优先级低, 没机会执行到检测代码)
// 因为要操作其他线程句柄(e.g. 发现shutdown文件标志后), 如果shutdown文件已经存在,
// 这种场景下, 如果其他线程还没创建，去操作其他无效的线程句柄，会崩溃(segment fault)
pfn_thread_proc_now = thread_proc_env_check;
i_thread_sn_env_check = i; // 保存管理线程的号码
} else {
switch (i) {
// case 不能为变量...
case 0: {
// 1#线程是写线程,
pfn_thread_proc_now = thread_proc_write;
}
break;
default: {
// 其他线程是读线程
pfn_thread_proc_now = thread_proc_read;
}
break;
}
}
if (EOK == pthread_create(
&p_thread_ctx[i].h_thread,
&thread_attr,
pfn_thread_proc_now,
p_thread_ctx + i))
{
p_thread_ctx[i].b_init_h_thread = true;
MYLOG_D("ok : pthread[%d] create\n", p_thread_ctx[i].i_thread_sn);
} else {
MYLOG_D("error : pthread[%d] create : %s\n", p_thread_ctx[i].i_thread_sn, strerror(errno));
break;
}
}
do {
if (is_file_exist(FILE_FLAG_SHUTDOWN, i_err_code, str_err)) {
MYLOG_D("find shutdown file\n");
pthread_attr_destroy(&thread_attr);
// 停掉环境检测线程(环境检测线程负责停掉其他线程)
if (pthread_kill(p_thread_ctx[i_thread_sn_env_check].h_thread, 0) == 0) {
// if thread is still active, first set thread quit falg
// thread will quit by p_thread_ctx[i_thread_sn_env_check].b_request_quit_thread
p_thread_ctx[i_thread_sn_env_check].b_request_quit_thread = true;
MYLOG_D("stop thread_env_check ...\n");
pthread_join(p_thread_ctx[i_thread_sn_env_check].h_thread, NULL);
}
MYLOG_D("ok : stop thread_env_check\n");
break;
}
// if not recv user quit command(/var/log/shutdown_test_time), run continue;
usleep(US_SLEEP_VAL_FO_READER);
} while (1);
SAFE_DELETE_ARY(p_thread_ctx);
return b_rc;
}
// @file const_define.h
#if not defined(__CONST_DEFINE_H__)
#define __CONST_DEFINE_H__
#include <string.h>
#include <string>
#include <list>
#include <syslog.h>
#define PROG_VER "1.0.0.1"
#define RELEASE_TIME "2018-11-11 14:04"
typedef unsigned long long ull;
#ifndef EOK
#define EOK 0
#endif // #ifndef EOK
#define MAX_MSG_LENGTH (1024 * 4)
#ifndef SAFE_DELETE
#define SAFE_DELETE(p) \
if (NULL != (p)) { \
delete (p); \
(p) = NULL; \
}
#endif // #ifndef SAFE_DELETE
#ifndef SAFE_DELETE_ARY
#define SAFE_DELETE_ARY(p) \
if (NULL != (p)) { \
delete[] (p); \
(p) = NULL; \
}
#endif // #ifndef SAFE_DELETE
#define TITLE_LINE80 "================================================================================"
#define LINE80 "--------------------------------------------------------------------------------"
#if not defined(MYLOG_D)
#define MYLOG_D(fmt, ...) \
do { \
syslog(LOG_INFO, "[%s : %s.%d : %s()] : " fmt, "MY_LOGD", __FILE__, __LINE__, __FUNCTION__, ##__VA_ARGS__); \
} while (0);
#endif // #if not defined(MYLOG_D)
#define FILE_FLAG_SHUTDOWN "/var/log/test_time__file_flag_to_shutdown"
#define FILE_FLAG_THREAD_RUN_ALL "/var/log/test_time__file_flag_to_thread_run_all"
#define FILE_FLAG_DEBUG "/var/log/test_time__file_flag_to_debug"
#define US_SLEEP_VAL_FO_WRITER 10 // 10微妙
#define US_SLEEP_VAL_FO_READER 1000000 // 1秒
#endif // #if not defined(__CONST_DEFINE_H__)
# ==============================================================================
# @file makefile
# ==============================================================================
# @note
# howto build project
# make BIN_NAME="bin_name_by_you_want" rebuild
# makefile code need tab key not sapce key
MY_MAKE_FILE_PATH_NAME = $(MAKEFILE_LIST)
# macro from Makefile command line
# BIN_NAME
# macro to C project
MAKE_FILE_MACRO__BIN_NAME="make_file_macro__bin_name"
# var define on Makefile
BIN = output_not_give_bin_name
IS_BUILD_TYPE_VALID = 0
ifdef BIN_NAME
IS_BUILD_TYPE_VALID = 1
BIN = $(BIN_NAME)
MAKE_FILE_MACRO__BIN_NAME=$(BIN_NAME)
else
IS_BUILD_TYPE_VALID = 0
endif
LINE80 = --------------------------------------------------------------------------------
# CC = g++ -std=c++98
CC = g++
# -Werror is "warning as error"
CFLAGS = -Wall -Werror -g
INC = -I.
LIBPATH = -L/usr/lib/ -L/usr/local/lib/
ifeq (1, $(IS_BUILD_TYPE_VALID))
LIBS = -lstdc++ -pthread
else
LIBS =
endif
DEPEND_CODE_DIR = ../common/ \
DEPEND_CODE_SRC = $(shell find $(DEPEND_CODE_DIR) -name '*.cpp')
DEPEND_CODE_OBJ = $(DEPEND_CODE_SRC:.cpp=.o)
ROOT_CODE_SRC = $(shell find ./ -name '*.cpp')
ROOT_CODE_OBJ = $(ROOT_CODE_SRC:.cpp=.o)
SUB_CODE_DIR = ./empty_dir
SUB_CODE_SRC = $(shell find $(SUB_CODE_DIR) -name '*.cpp')
SUB_CODE_OBJ = $(SUB_CODE_SRC:.cpp=.o)
.PHONY: help
help:
clear
@echo "usage:"
@echo
@echo "build project by given bin name"
@echo "make BIN_NAME=\"bin_name_by_you_want\" rebuild"
@echo
.PHONY: clean
clean:
clear
@echo
@echo
@echo
@echo
@echo
@echo
@echo
@echo
@echo
@echo
@echo
@echo
@echo
@echo
@echo
@echo
@echo
@echo
@echo
@echo
@echo
@echo
@echo
@echo
@echo
@echo "make clean begin"
@echo $(LINE80)
@echo "@file $(MY_MAKE_FILE_PATH_NAME)"
@echo "IS_BUILD_TYPE_VALID = $(IS_BUILD_TYPE_VALID)"
@echo "BIN = $(BIN)"
@echo $(LINE80)
rm -f $(ROOT_CODE_OBJ) $(DEPEND_CODE_OBJ) $(SUB_CODE_OBJ)
ifeq (1, $(IS_BUILD_TYPE_VALID))
rm -f ./$(BIN)
endif
@echo "make clean over"
.PHONY: all
all:$(BIN)
@echo $(LINE80)
@echo make all
chmod 777 ./$(BIN)
find . -name "$(BIN)"
$(BIN) : $(ROOT_CODE_OBJ) $(DEPEND_CODE_OBJ) $(SUB_CODE_OBJ)
$(CC) $(CFLAGS) -o $@ $^ $(SHLIBS) $(INC) $(LIBPATH) $(LIBS)
.cpp.o:
$(CC) -c $(CFLAGS) -DMAKE_FILE_MACRO__BIN_NAME="\"$(MAKE_FILE_MACRO__BIN_NAME)\"" $^ -o $@ $(INC) $(LIBPATH) $(LIBS)
.PHONY: rebuild
rebuild:
make -f $(MY_MAKE_FILE_PATH_NAME) clean
ifeq (1, $(IS_BUILD_TYPE_VALID))
@echo $(LINE80)
make -f $(MY_MAKE_FILE_PATH_NAME) all
chmod 775 ./$(BIN)
ldd ./$(BIN)
else
@echo $(LINE80)
@echo "error : Makefile command line input error, please see help"
@echo "please run => make help"
@echo $(LINE80)
endif
#!/bin/bash
# ==============================================================================
# @file build_all_project.sh
# ==============================================================================
make BIN_NAME="test_time" rebuild