libevent 信号示例
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#include <sys/types.h> #include <event2/event-config.h> #include <sys/stat.h> #ifndef WIN32 #include <sys/queue.h> #include <unistd.h> #include <sys/time.h> #else #include <winsock2.h> #include <windows.h> #endif #include <signal.h> #include <fcntl.h> #include <stdlib.h> #include <stdio.h> #include <string.h> #include <errno.h> #include <event.h> #ifdef _EVENT___func__ #define __func__ _EVENT___func__ #endif int called = 0; static void signal_cb(evutil_socket_t fd, short event, void *arg) { struct event *signal = arg; printf("%s: got signal %d\n", __func__, EVENT_SIGNAL(signal)); if (called >= 2) { event_del(signal); } called++; } int main(int argc, char **argv) { struct event signal_int; struct event_base* base; base = event_base_new(); event_assign(&signal_int, base, SIGINT, EV_SIGNAL|EV_PERSIST, signal_cb, &signal_int); event_add(&signal_int, NULL); event_base_dispatch(base); event_base_free(base); return 0; } |
这个信号示例是在Linux下测试的，程序执行时在键盘连续输入CTRL+C,打印如下：
CTRL+C即SIGINT，值为2。
