signal-test.c (1380B)
1 /* 2 * Compile with: 3 * cc -I/usr/local/include -o signal-test \ 4 * signal-test.c -L/usr/local/lib -levent 5 */ 6 7 #include <sys/types.h> 8 9 #include <event2/event-config.h> 10 11 #include <sys/stat.h> 12 #ifndef _WIN32 13 #include <sys/queue.h> 14 #include <unistd.h> 15 #include <sys/time.h> 16 #else 17 #include <winsock2.h> 18 #include <windows.h> 19 #endif 20 #include <signal.h> 21 #include <fcntl.h> 22 #include <stdlib.h> 23 #include <stdio.h> 24 #include <string.h> 25 #include <errno.h> 26 27 #include <event2/event.h> 28 29 int called = 0; 30 31 static void 32 signal_cb(evutil_socket_t fd, short event, void *arg) 33 { 34 struct event *signal = arg; 35 36 printf("signal_cb: got signal %d\n", event_get_signal(signal)); 37 38 if (called >= 2) 39 event_del(signal); 40 41 called++; 42 } 43 44 int 45 main(int argc, char **argv) 46 { 47 struct event *signal_int = NULL; 48 struct event_base* base; 49 int ret = 0; 50 #ifdef _WIN32 51 WORD wVersionRequested; 52 WSADATA wsaData; 53 54 wVersionRequested = MAKEWORD(2, 2); 55 56 (void) WSAStartup(wVersionRequested, &wsaData); 57 #endif 58 59 /* Initialize the event library */ 60 base = event_base_new(); 61 if (!base) { 62 ret = 1; 63 goto out; 64 } 65 66 /* Initialize one event */ 67 signal_int = evsignal_new(base, SIGINT, signal_cb, event_self_cbarg()); 68 if (!signal_int) { 69 ret = 2; 70 goto out; 71 } 72 event_add(signal_int, NULL); 73 74 event_base_dispatch(base); 75 76 out: 77 if (signal_int) 78 event_free(signal_int); 79 if (base) 80 event_base_free(base); 81 return ret; 82 }