| 1 |
#include <sys/epoll.h> |
| 2 |
|
| 3 |
static int epoll_fd = -1; |
| 4 |
|
| 5 |
static void |
| 6 |
epoll_modify (int fd, int oev, int nev) |
| 7 |
{ |
| 8 |
int mode = nev ? oev ? EPOLL_CTL_MOD : EPOLL_CTL_ADD : EPOLL_CTL_DEL; |
| 9 |
|
| 10 |
struct epoll_event ev; |
| 11 |
ev.data.fd = fd; |
| 12 |
ev.events = |
| 13 |
(nev & EV_READ ? EPOLLIN : 0) |
| 14 |
| (nev & EV_WRITE ? EPOLLOUT : 0); |
| 15 |
|
| 16 |
fprintf (stderr, "reify %d,%d,%d m%d (r=%d)\n", fd, oev, nev, mode,//D |
| 17 |
epoll_ctl (epoll_fd, mode, fd, &ev) |
| 18 |
);//D |
| 19 |
} |
| 20 |
|
| 21 |
void epoll_postfork_child (void) |
| 22 |
{ |
| 23 |
int fd; |
| 24 |
|
| 25 |
epoll_fd = epoll_create (256); |
| 26 |
fcntl (epoll_fd, F_SETFD, FD_CLOEXEC); |
| 27 |
|
| 28 |
/* re-register interest in fds */ |
| 29 |
for (fd = 0; fd < anfdmax; ++fd) |
| 30 |
if (anfds [fd].wev) |
| 31 |
epoll_modify (fd, EV_NONE, anfds [fd].wev); |
| 32 |
} |
| 33 |
|
| 34 |
static struct epoll_event *events; |
| 35 |
static int eventmax; |
| 36 |
|
| 37 |
static void epoll_poll (ev_tstamp timeout) |
| 38 |
{ |
| 39 |
int eventcnt = epoll_wait (epoll_fd, events, eventmax, ceil (timeout * 1000.)); |
| 40 |
int i; |
| 41 |
|
| 42 |
if (eventcnt < 0) |
| 43 |
return; |
| 44 |
|
| 45 |
for (i = 0; i < eventcnt; ++i) |
| 46 |
fd_event ( |
| 47 |
events [i].data.fd, |
| 48 |
(events [i].events & (EPOLLOUT | EPOLLERR | EPOLLHUP) ? EV_WRITE : 0) |
| 49 |
| (events [i].events & (EPOLLIN | EPOLLERR | EPOLLHUP) ? EV_READ : 0) |
| 50 |
); |
| 51 |
|
| 52 |
/* if the receive array was full, increase its size */ |
| 53 |
if (eventcnt == eventmax) |
| 54 |
{ |
| 55 |
free (events); |
| 56 |
eventmax += eventmax >> 1; |
| 57 |
events = malloc (sizeof (struct epoll_event) * eventmax); |
| 58 |
} |
| 59 |
} |
| 60 |
|
| 61 |
void epoll_init (int flags) |
| 62 |
{ |
| 63 |
epoll_fd = epoll_create (256); |
| 64 |
|
| 65 |
if (epoll_fd < 0) |
| 66 |
return; |
| 67 |
|
| 68 |
fcntl (epoll_fd, F_SETFD, FD_CLOEXEC); |
| 69 |
|
| 70 |
ev_method = EVMETHOD_EPOLL; |
| 71 |
method_fudge = 1e-3; /* needed to compensate for epoll returning early */ |
| 72 |
method_modify = epoll_modify; |
| 73 |
method_poll = epoll_poll; |
| 74 |
|
| 75 |
eventmax = 64; /* intiial number of events receivable per poll */ |
| 76 |
events = malloc (sizeof (struct epoll_event) * eventmax); |
| 77 |
} |
