1.安装:https://blog.csdn.net/Dancer__Sky/article/details/85156972
2.使动态链接库生效命令:/sbin/ldconfig -v
3.编译命令:gcc -o libevtest2 libevtest2.c -lev
4.测试程序
-
root@SHPD18F-SP05:~# cat libevtest2.c #include <stdio.h> #include <stdint.h> #include <unistd.h> #include <string.h> #include <time.h> #include <ev.h> #define TIMER_TEST //#define EV_IO_TEST /*获取系统本地时间打印*/ uint32_t print_timenow() { time_t now; struct tm *tm_now; time(&now); tm_now = localtime(&now); uint32_t times = tm_now->tm_hour * 3600 + tm_now->tm_min * 60 + tm_now->tm_sec; printf("[%02d:%02d:%02d]\r\n", tm_now->tm_hour, tm_now->tm_min, tm_now->tm_sec); return times; } #ifdef TIMER_TEST /*定时器事件测试*/ ev_timer timer_watcher; static void timer_cb (EV_P_ ev_timer *w, int revents) { printf("timer clock...."); print_timenow(); //ev_timer_stop(EV_A_ w); //ev_break(EV_A_ EVBREAK_ONE); } int main() { /*多线程不安全*/ struct ev_loop *loop = EV_DEFAULT; ev_timer_init (&timer_watcher, timer_cb, 3, 1); ev_timer_start (loop, &timer_watcher); ev_run (loop, 0); return 0; } #endif #ifdef EV_IO_TEST ev_io stdin_watcher; static void stdin_cb (struct ev_loop *loop ,struct ev_io *w, int revents) { void *user_data = ev_userdata(loop); int num = *((int *)user_data); printf("stdin input......userdata = %d\r\n", num); ev_io_stop (loop, w); // this causes all nested ev_run's to stop iterating ev_break (EV_A_ EVBREAK_ALL); } int main() { /*创建一个事件循环，多线程安全*/ struct ev_loop *loop = ev_loop_new(EVBACKEND_EPOLL); if (NULL == loop) { printf("create loop failed\r\n"); return 1; } //传输用户数据 int user_data = 666; ev_set_userdata(loop, &user_data); //初始化并开始 ev_io_init (&stdin_watcher, stdin_cb, STDIN_FILENO, EV_READ); ev_io_start (loop, &stdin_watcher); //循环检测事件发生处理 ev_run (loop, 0); return 0; } #endif