/*
do a single event loop using the events defined in ev
*/
static int std_event_loop_once(struct tevent_context *ev, const char *location)
{
struct std_event_context *std_ev = talloc_get_type(ev->additional_data,
struct std_event_context);
struct timeval tval;
if (ev->signal_events &&
tevent_common_check_signal(ev)) {
return 0;
}
if (ev->immediate_events &&
tevent_common_loop_immediate(ev)) {
return 0;
}
tval = tevent_common_loop_timer_delay(ev);
if (tevent_timeval_is_zero(&tval)) {
return 0;
}
epoll_check_reopen(std_ev);
if (epoll_event_loop(std_ev, &tval) == 0) {
return 0;
}
return std_event_loop_select(std_ev, &tval);
}
/*
add a fd based event
return NULL on failure (memory allocation error)
*/
static struct tevent_fd *std_event_add_fd(struct tevent_context *ev, TALLOC_CTX *mem_ctx,
int fd, uint16_t flags,
tevent_fd_handler_t handler,
void *private_data,
const char *handler_name,
const char *location)
{
struct std_event_context *std_ev = talloc_get_type(ev->additional_data,
struct std_event_context);
struct tevent_fd *fde;
epoll_check_reopen(std_ev);
fde = tevent_common_add_fd(ev, mem_ctx, fd, flags,
handler, private_data,
handler_name, location);
if (!fde) return NULL;
if ((std_ev->maxfd != EVENT_INVALID_MAXFD)
&& (fde->fd > std_ev->maxfd)) {
std_ev->maxfd = fde->fd;
}
talloc_set_destructor(fde, std_event_fd_destructor);
epoll_add_event(std_ev, fde);
return fde;
}
/*
set the fd event flags
*/
static void std_event_set_fd_flags(struct tevent_fd *fde, uint16_t flags)
{
struct tevent_context *ev;
struct std_event_context *std_ev;
if (fde->flags == flags) return;
ev = fde->event_ctx;
std_ev = talloc_get_type(ev->additional_data, struct std_event_context);
fde->flags = flags;
epoll_check_reopen(std_ev);
epoll_change_event(std_ev, fde);
}
/*
destroy an fd_event
*/
static int epoll_event_fd_destructor(struct tevent_fd *fde)
{
struct tevent_context *ev = fde->event_ctx;
struct epoll_event_context *epoll_ev = NULL;
if (ev) {
epoll_ev = talloc_get_type(ev->additional_data,
struct epoll_event_context);
epoll_check_reopen(epoll_ev);
epoll_del_event(epoll_ev, fde);
}
return tevent_common_fd_destructor(fde);
}
/*
destroy an fd_event
*/
static int std_event_fd_destructor(struct tevent_fd *fde)
{
struct tevent_context *ev = fde->event_ctx;
struct std_event_context *std_ev = NULL;
if (ev) {
std_ev = talloc_get_type(ev->additional_data,
struct std_event_context);
epoll_check_reopen(std_ev);
if (std_ev->maxfd == fde->fd) {
std_ev->maxfd = EVENT_INVALID_MAXFD;
}
epoll_del_event(std_ev, fde);
}
return tevent_common_fd_destructor(fde);
}
/*
add a fd based event
return NULL on failure (memory allocation error)
*/
static struct tevent_fd *epoll_event_add_fd(struct tevent_context *ev, TALLOC_CTX *mem_ctx,
int fd, uint16_t flags,
tevent_fd_handler_t handler,
void *private_data,
const char *handler_name,
const char *location)
{
struct epoll_event_context *epoll_ev = talloc_get_type(ev->additional_data,
struct epoll_event_context);
struct tevent_fd *fde;
epoll_check_reopen(epoll_ev);
fde = tevent_common_add_fd(ev, mem_ctx, fd, flags,
handler, private_data,
handler_name, location);
if (!fde) return NULL;
talloc_set_destructor(fde, epoll_event_fd_destructor);
epoll_add_event(epoll_ev, fde);
return fde;
}