#include <sys/epoll.h> static int epoll_fd = -1; static void epoll_modify (int fd, int oev, int nev) { int mode = nev ? oev ? EPOLL_CTL_MOD : EPOLL_CTL_ADD : EPOLL_CTL_DEL; struct epoll_event ev; ev.data.fd = fd; ev.events = (nev & EV_READ ? EPOLLIN : 0) | (nev & EV_WRITE ? EPOLLOUT : 0); fprintf (stderr, "reify %d,%d,%d m%d (r=%d)\n", fd, oev, nev, mode,//D epoll_ctl (epoll_fd, mode, fd, &ev) );//D } void epoll_postfork_child (void) { int fd; epoll_fd = epoll_create (256); fcntl (epoll_fd, F_SETFD, FD_CLOEXEC); /* re-register interest in fds */ for (fd = 0; fd < anfdmax; ++fd) if (anfds [fd].wev) epoll_modify (fd, EV_NONE, anfds [fd].wev); } static struct epoll_event *events; static int eventmax; static void epoll_poll (ev_tstamp timeout) { int eventcnt = epoll_wait (epoll_fd, events, eventmax, ceil (timeout * 1000.)); int i; if (eventcnt < 0) return; for (i = 0; i < eventcnt; ++i) fd_event ( events [i].data.fd, (events [i].events & (EPOLLOUT | EPOLLERR | EPOLLHUP) ? EV_WRITE : 0) | (events [i].events & (EPOLLIN | EPOLLERR | EPOLLHUP) ? EV_READ : 0) ); /* if the receive array was full, increase its size */ if (eventcnt == eventmax) { free (events); eventmax += eventmax >> 1; events = malloc (sizeof (struct epoll_event) * eventmax); } } void epoll_init (int flags) { epoll_fd = epoll_create (256); if (epoll_fd < 0) return; fcntl (epoll_fd, F_SETFD, FD_CLOEXEC); ev_method = EVMETHOD_EPOLL; method_fudge = 1e-3; /* needed to compensate for epoll returning early */ method_modify = epoll_modify; method_poll = epoll_poll; eventmax = 64; /* intiial number of events receivable per poll */ events = malloc (sizeof (struct epoll_event) * eventmax); }