CheckWorkingKqueue.cmake (954B)
1 include(CheckCSourceRuns) 2 3 check_c_source_runs( 4 " 5 #include <sys/types.h> 6 #include <sys/time.h> 7 #include <sys/event.h> 8 #include <stdio.h> 9 #include <unistd.h> 10 #include <fcntl.h> 11 12 int 13 main(int argc, char **argv) 14 { 15 int kq; 16 int n; 17 int fd[2]; 18 struct kevent ev; 19 struct timespec ts; 20 char buf[80000]; 21 22 if (pipe(fd) == -1) 23 exit(1); 24 if (fcntl(fd[1], F_SETFL, O_NONBLOCK) == -1) 25 exit(1); 26 27 while ((n = write(fd[1], buf, sizeof(buf))) == sizeof(buf)) 28 ; 29 30 if ((kq = kqueue()) == -1) 31 exit(1); 32 33 memset(&ev, 0, sizeof(ev)); 34 ev.ident = fd[1]; 35 ev.filter = EVFILT_WRITE; 36 ev.flags = EV_ADD | EV_ENABLE; 37 n = kevent(kq, &ev, 1, NULL, 0, NULL); 38 if (n == -1) 39 exit(1); 40 41 read(fd[0], buf, sizeof(buf)); 42 43 ts.tv_sec = 0; 44 ts.tv_nsec = 0; 45 n = kevent(kq, NULL, 0, &ev, 1, &ts); 46 if (n == -1 || n == 0) 47 exit(1); 48 49 exit(0); 50 } 51 52 " EVENT__HAVE_WORKING_KQUEUE)