CheckWorkingKqueue.cmake

Enable keyboard shortcuts

include(CheckCSourceRuns)

check_c_source_runs(

#include <sys/types.h>

#include <sys/time.h>

#include <sys/event.h>

#include <stdio.h>

#include <unistd.h>

#include <fcntl.h>

int

main(int argc, char **argv)

    int kq;

    int n;

    int fd[2];

    struct kevent ev;

    struct timespec ts;

    char buf[80000];

    if (pipe(fd) == -1)

        exit(1);

    if (fcntl(fd[1], F_SETFL, O_NONBLOCK) == -1)

        exit(1);

    while ((n = write(fd[1], buf, sizeof(buf))) == sizeof(buf))

    if ((kq = kqueue()) == -1)

        exit(1);

    memset(&ev, 0, sizeof(ev));

    ev.ident = fd[1];

    ev.filter = EVFILT_WRITE;

    ev.flags = EV_ADD | EV_ENABLE;

    n = kevent(kq, &ev, 1, NULL, 0, NULL);

    if (n == -1)

        exit(1);

    read(fd[0], buf, sizeof(buf));

    ts.tv_sec = 0;

    ts.tv_nsec = 0;

    n = kevent(kq, NULL, 0, &ev, 1, &ts);

    if (n == -1 || n == 0)

        exit(1);

    exit(0);

" EVENT__HAVE_WORKING_KQUEUE)