/*
* rb_setselect
*
* This is a needed exported function which will be called to register
* and deregister interest in a pending IO state for a given FD.
*/
void
rb_setselect_ports(rb_fde_t *F, unsigned int type, PF * handler, void *client_data)
{
lrb_assert(IsFDOpen(F));
int old_flags = F->pflags;
if(type & RB_SELECT_READ)
{
F->read_handler = handler;
F->read_data = client_data;
}
if(type & RB_SELECT_WRITE)
{
F->write_handler = handler;
F->write_data = client_data;
}
F->pflags = 0;
if(F->read_handler != NULL)
F->pflags = POLLIN;
if(F->write_handler != NULL)
F->pflags |= POLLOUT;
if(old_flags == 0 && F->pflags == 0)
return;
else if(F->pflags <= 0)
{
port_dissociate(pe, PORT_SOURCE_FD, F->fd);
return;
}
port_associate(pe, PORT_SOURCE_FD, F->fd, F->pflags, F);
}
static LRESULT CALLBACK
rb_process_events(HWND nhwnd, UINT umsg, WPARAM wparam, LPARAM lparam)
{
rb_fde_t *F;
PF *hdl;
void *data;
switch (umsg)
{
case WM_SOCKET:
{
F = rb_find_fd(wparam);
if(F != NULL && IsFDOpen(F))
{
switch (WSAGETSELECTEVENT(lparam))
{
case FD_ACCEPT:
case FD_CLOSE:
case FD_READ:
{
if((hdl = F->read_handler) != NULL)
{
F->read_handler = NULL;
data = F->read_data;
F->read_data = NULL;
hdl(F, data);
}
break;
}
case FD_CONNECT:
case FD_WRITE:
{
if((hdl = F->write_handler) != NULL)
{
F->write_handler = NULL;
data = F->write_data;
F->write_data = NULL;
hdl(F, data);
}
}
}
}
return 0;
}
case WM_DESTROY:
{
PostQuitMessage(0);
return 0;
}
default:
return DefWindowProc(nhwnd, umsg, wparam, lparam);
}
return 0;
}
/*
* rb_setselect
*
* This is a needed exported function which will be called to register
* and deregister interest in a pending IO state for a given FD.
*/
void
rb_setselect_epoll(rb_fde_t *F, unsigned int type, PF * handler, void *client_data)
{
struct epoll_event ep_event;
int old_flags = F->pflags;
int op = -1;
lrb_assert(IsFDOpen(F));
/* Update the list, even though we're not using it .. */
if(type & RB_SELECT_READ)
{
if(handler != NULL)
F->pflags |= EPOLLIN;
else
F->pflags &= ~EPOLLIN;
F->read_handler = handler;
F->read_data = client_data;
}
if(type & RB_SELECT_WRITE)
{
if(handler != NULL)
F->pflags |= EPOLLOUT;
else
F->pflags &= ~EPOLLOUT;
F->write_handler = handler;
F->write_data = client_data;
}
if(old_flags == 0 && F->pflags == 0)
return;
else if(F->pflags <= 0)
op = EPOLL_CTL_DEL;
else if(old_flags == 0 && F->pflags > 0)
op = EPOLL_CTL_ADD;
else if(F->pflags != old_flags)
op = EPOLL_CTL_MOD;
if(op == -1)
return;
ep_event.events = F->pflags;
ep_event.data.ptr = F;
if(op == EPOLL_CTL_ADD || op == EPOLL_CTL_MOD)
ep_event.events |= EPOLLET;
if(epoll_ctl(ep_info->ep, op, F->fd, &ep_event) != 0)
{
rb_lib_log("rb_setselect_epoll(): epoll_ctl failed: %s", strerror(errno));
abort();
}
}
int
rb_select_select(long delay)
{
int num;
int fd;
PF *hdl;
rb_fde_t *F;
struct timeval to;
/* Copy over the read/write sets so we don't have to rebuild em */
memcpy(&tmpreadfds, &select_readfds, sizeof(fd_set));
memcpy(&tmpwritefds, &select_writefds, sizeof(fd_set));
for (;;) {
to.tv_sec = 0;
to.tv_usec = delay * 1000;
num = select(rb_maxfd + 1, &tmpreadfds, &tmpwritefds, NULL, &to);
if (num >= 0)
break;
if (rb_ignore_errno(errno))
continue;
rb_set_time();
/* error! */
return -1;
/* NOTREACHED */
}
rb_set_time();
if (num == 0)
return 0;
/* XXX we *could* optimise by falling out after doing num fds ... */
for (fd = 0; fd < rb_maxfd + 1; fd++) {
F = rb_find_fd(fd);
if (F == NULL)
continue;
if (FD_ISSET(fd, &tmpreadfds)) {
hdl = F->read_handler;
F->read_handler = NULL;
if (hdl)
hdl(F, F->read_data);
}
if (!IsFDOpen(F))
continue; /* Read handler closed us..go on */
if (FD_ISSET(fd, &tmpwritefds)) {
hdl = F->write_handler;
F->write_handler = NULL;
if (hdl)
hdl(F, F->write_data);
}
if (F->read_handler == NULL)
select_update_selectfds(F, RB_SELECT_READ, NULL);
if (F->write_handler == NULL)
select_update_selectfds(F, RB_SELECT_WRITE, NULL);
}
return 0;
}
/*
* rb_setselect
*
* This is a needed exported function which will be called to register
* and deregister interest in a pending IO state for a given FD.
*/
void
rb_setselect_select(rb_fde_t *F, unsigned int type, PF * handler, void *client_data)
{
lrb_assert(IsFDOpen(F));
if (type & RB_SELECT_READ) {
F->read_handler = handler;
F->read_data = client_data;
select_update_selectfds(F, RB_SELECT_READ, handler);
}
if (type & RB_SELECT_WRITE) {
F->write_handler = handler;
F->write_data = client_data;
select_update_selectfds(F, RB_SELECT_WRITE, handler);
}
}
/*
* rb_setselect
*
* This is a needed exported function which will be called to register
* and deregister interest in a pending IO state for a given FD.
*/
void
rb_setselect_kqueue(rb_fde_t *F, unsigned int type, PF * handler, void *client_data)
{
lrb_assert(IsFDOpen(F));
if(type & RB_SELECT_READ)
{
kq_update_events(F, EVFILT_READ, handler);
F->read_handler = handler;
F->read_data = client_data;
}
if(type & RB_SELECT_WRITE)
{
kq_update_events(F, EVFILT_WRITE, handler);
F->write_handler = handler;
F->write_data = client_data;
}
}
void
rb_setselect_win32(rb_fde_t *F, unsigned int type, PF * handler, void *client_data)
{
int old_flags = F->pflags;
lrb_assert(IsFDOpen(F));
/* Update the list, even though we're not using it .. */
if(type & RB_SELECT_READ)
{
if(handler != NULL)
F->pflags |= FD_CLOSE | FD_READ | FD_ACCEPT;
else
F->pflags &= ~(FD_CLOSE | FD_READ | FD_ACCEPT);
F->read_handler = handler;
F->read_data = client_data;
}
if(type & RB_SELECT_WRITE)
{
if(handler != NULL)
F->pflags |= FD_WRITE | FD_CONNECT;
else
F->pflags &= ~(FD_WRITE | FD_CONNECT);
F->write_handler = handler;
F->write_data = client_data;
}
if(old_flags == 0 && F->pflags == 0)
return;
if(F->pflags != old_flags)
{
WSAAsyncSelect(F->fd, hwnd, WM_SOCKET, F->pflags);
}
}
int
rb_select_epoll(long delay)
{
int num, i, flags, old_flags, op;
struct epoll_event ep_event;
int o_errno;
void *data;
num = epoll_wait(ep_info->ep, ep_info->pfd, ep_info->pfd_size, delay);
/* save errno as rb_set_time() will likely clobber it */
o_errno = errno;
rb_set_time();
errno = o_errno;
if(num < 0 && !rb_ignore_errno(o_errno))
return RB_ERROR;
if(num <= 0)
return RB_OK;
for(i = 0; i < num; i++)
{
PF *hdl;
rb_fde_t *F = ep_info->pfd[i].data.ptr;
old_flags = F->pflags;
if(ep_info->pfd[i].events & (EPOLLIN | EPOLLHUP | EPOLLERR))
{
hdl = F->read_handler;
data = F->read_data;
F->read_handler = NULL;
F->read_data = NULL;
if(hdl)
{
hdl(F, data);
}
}
if(!IsFDOpen(F))
continue;
if(ep_info->pfd[i].events & (EPOLLOUT | EPOLLHUP | EPOLLERR))
{
hdl = F->write_handler;
data = F->write_data;
F->write_handler = NULL;
F->write_data = NULL;
if(hdl)
{
hdl(F, data);
}
}
if(!IsFDOpen(F))
continue;
flags = 0;
if(F->read_handler != NULL)
flags |= EPOLLIN;
if(F->write_handler != NULL)
flags |= EPOLLOUT;
if(old_flags != flags)
{
if(flags == 0)
op = EPOLL_CTL_DEL;
else
op = EPOLL_CTL_MOD;
F->pflags = ep_event.events = flags;
ep_event.data.ptr = F;
if(op == EPOLL_CTL_MOD || op == EPOLL_CTL_ADD)
ep_event.events |= EPOLLET;
if(epoll_ctl(ep_info->ep, op, F->fd, &ep_event) != 0)
{
rb_lib_log("rb_select_epoll(): epoll_ctl failed: %s",
strerror(errno));
}
}
}
return RB_OK;
}
int
rb_select_poll(long delay)
{
int num;
int fd;
int ci;
PF *hdl;
void *data;
struct pollfd *pfd;
int revents;
num = poll(pollfd_list.pollfds, pollfd_list.maxindex + 1, delay);
rb_set_time();
if(num < 0) {
if(!rb_ignore_errno(errno))
return RB_OK;
else
return RB_ERROR;
}
if(num == 0)
return RB_OK;
/* XXX we *could* optimise by falling out after doing num fds ... */
for(ci = 0; ci < pollfd_list.maxindex + 1; ci++) {
rb_fde_t *F;
pfd = &pollfd_list.pollfds[ci];
revents = pfd->revents;
fd = pfd->fd;
if(revents == 0 || fd == -1)
continue;
F = rb_find_fd(fd);
if(F == NULL)
continue;
if(revents & (POLLRDNORM | POLLIN | POLLHUP | POLLERR)) {
hdl = F->read_handler;
data = F->read_data;
F->read_handler = NULL;
F->read_data = NULL;
if(hdl)
hdl(F, data);
}
if(IsFDOpen(F) && (revents & (POLLWRNORM | POLLOUT | POLLHUP | POLLERR))) {
hdl = F->write_handler;
data = F->write_data;
F->write_handler = NULL;
F->write_data = NULL;
if(hdl)
hdl(F, data);
}
if(F->read_handler == NULL)
rb_setselect_poll(F, RB_SELECT_READ, NULL, NULL);
if(F->write_handler == NULL)
rb_setselect_poll(F, RB_SELECT_WRITE, NULL, NULL);
}
return 0;
}
int
rb_select_devpoll(long delay)
{
int num, i;
struct pollfd pollfds[maxfd];
struct dvpoll dopoll;
do
{
for(;;)
{
dopoll.dp_timeout = delay;
dopoll.dp_nfds = maxfd;
dopoll.dp_fds = &pollfds[0];
num = ioctl(dpfd, DP_POLL, &dopoll);
if(num >= 0)
break;
if(rb_ignore_errno(errno))
break;
rb_set_time();
return RB_ERROR;
}
rb_set_time();
if(num == 0)
continue;
for(i = 0; i < num; i++)
{
int fd = dopoll.dp_fds[i].fd;
PF *hdl = NULL;
rb_fde_t *F = rb_find_fd(fd);
if((dopoll.dp_fds[i].revents & (POLLRDNORM | POLLIN | POLLHUP |
POLLERR))
&& (dopoll.dp_fds[i].events & (POLLRDNORM | POLLIN)))
{
if((hdl = F->read_handler) != NULL)
{
F->read_handler = NULL;
hdl(F, F->read_data);
/*
* this call used to be with a NULL pointer, BUT
* in the devpoll case we only want to update the
* poll set *if* the handler changes state (active ->
* NULL or vice versa.)
*/
devpoll_update_events(F, RB_SELECT_READ, F->read_handler);
}
}
if(!IsFDOpen(F))
continue; /* Read handler closed us..go on to do something more useful */
if((dopoll.dp_fds[i].revents & (POLLWRNORM | POLLOUT | POLLHUP |
POLLERR))
&& (dopoll.dp_fds[i].events & (POLLWRNORM | POLLOUT)))
{
if((hdl = F->write_handler) != NULL)
{
F->write_handler = NULL;
hdl(F, F->write_data);
/* See above similar code in the read case */
devpoll_update_events(F,
RB_SELECT_WRITE, F->write_handler);
}
}
}
return RB_OK;
}
while(0);
/* XXX Get here, we broke! */
return 0;
}
/* int rb_select(long delay)
* Input: The maximum time to delay.
* Output: Returns -1 on error, 0 on success.
* Side-effects: Deregisters future interest in IO and calls the handlers
* if an event occurs for an FD.
* Comments: Check all connections for new connections and input data
* that is to be processed. Also check for connections with data queued
* and whether we can write it out.
* Called to do the new-style IO, courtesy of squid (like most of this
* new IO code). This routine handles the stuff we've hidden in
* rb_setselect and fd_table[] and calls callbacks for IO ready
* events.
*/
int
rb_select_sigio(long delay)
{
int num = 0;
int revents = 0;
int sig;
int fd;
int ci;
PF *hdl;
rb_fde_t *F;
void *data;
siginfo_t si;
struct timespec timeout;
if(rb_sigio_supports_event() || delay >= 0) {
timeout.tv_sec = (delay / 1000);
timeout.tv_nsec = (delay % 1000) * 1000000;
}
for(;;) {
if(!sigio_is_screwed) {
if(can_do_event || delay < 0) {
sig = sigwaitinfo(&our_sigset, &si);
} else
sig = sigtimedwait(&our_sigset, &si, &timeout);
if(sig > 0) {
if(sig == SIGIO) {
rb_lib_log
("Kernel RT Signal queue overflowed. Is ulimit -i too small(or perhaps /proc/sys/kernel/rtsig-max on old kernels)");
sigio_is_screwed = 1;
break;
}
#ifdef SIGIO_SCHED_EVENT
if(sig == RTSIGTIM && can_do_event) {
struct ev_entry *ev = (struct ev_entry *)si.si_ptr;
if(ev == NULL)
continue;
rb_run_event(ev);
continue;
}
#endif
fd = si.si_fd;
pollfd_list.pollfds[fd].revents |= si.si_band;
revents = pollfd_list.pollfds[fd].revents;
num++;
F = rb_find_fd(fd);
if(F == NULL)
continue;
if(revents & (POLLRDNORM | POLLIN | POLLHUP | POLLERR)) {
hdl = F->read_handler;
data = F->read_data;
F->read_handler = NULL;
F->read_data = NULL;
if(hdl)
hdl(F, data);
}
if(revents & (POLLWRNORM | POLLOUT | POLLHUP | POLLERR)) {
hdl = F->write_handler;
data = F->write_data;
F->write_handler = NULL;
F->write_data = NULL;
if(hdl)
hdl(F, data);
}
} else
break;
} else
break;
}
if(!sigio_is_screwed) { /* We don't need to proceed */
rb_set_time();
return 0;
}
signal(RTSIGIO, SIG_IGN);
signal(RTSIGIO, SIG_DFL);
sigio_is_screwed = 0;
num = poll(pollfd_list.pollfds, pollfd_list.maxindex + 1, delay);
rb_set_time();
if(num < 0) {
if(!rb_ignore_errno(errno))
return RB_OK;
else
return RB_ERROR;
}
if(num == 0)
return RB_OK;
/* XXX we *could* optimise by falling out after doing num fds ... */
for(ci = 0; ci < pollfd_list.maxindex + 1; ci++) {
if(((revents = pollfd_list.pollfds[ci].revents) == 0)
|| (pollfd_list.pollfds[ci].fd) == -1)
continue;
fd = pollfd_list.pollfds[ci].fd;
F = rb_find_fd(fd);
if(F == NULL)
continue;
if(revents & (POLLRDNORM | POLLIN | POLLHUP | POLLERR)) {
hdl = F->read_handler;
data = F->read_data;
F->read_handler = NULL;
F->read_data = NULL;
if(hdl)
hdl(F, data);
}
if(IsFDOpen(F) && (revents & (POLLWRNORM | POLLOUT | POLLHUP | POLLERR))) {
hdl = F->write_handler;
data = F->write_data;
F->write_handler = NULL;
F->write_data = NULL;
if(hdl)
hdl(F, data);
}
if(F->read_handler == NULL)
rb_setselect_sigio(F, RB_SELECT_READ, NULL, NULL);
if(F->write_handler == NULL)
rb_setselect_sigio(F, RB_SELECT_WRITE, NULL, NULL);
}
return 0;
}