21 int pselect(
int n, fd_set* readfds, fd_set* writefds, fd_set* exceptfds,
22 const struct timespec* timeout,
const sigset_t* sigmask);
24 #include <sys/select.h> 28 #define NANOSECONDS_PER_SECOND 1000000000L 30 static const char* netio_str =
"netio";
57 if (!netio || !handler) {
69 ods_log_debug(
"[%s] handler added", netio_str);
80 if (!netio || !handler) {
83 for (lptr = &netio->
handlers; *lptr; lptr = &(*lptr)->
next) {
84 if ((*lptr)->handler == handler) {
96 ods_log_debug(
"[%s] handler removed", netio_str);
105 timeval_to_timespec(
struct timespec* left,
const struct timeval* right)
107 left->tv_sec = right->tv_sec;
108 left->tv_nsec = 1000 * right->tv_usec;
116 timespec_compare(
const struct timespec* left,
117 const struct timespec* right)
119 if (left->tv_sec < right->tv_sec) {
121 }
else if (left->tv_sec > right->tv_sec) {
123 }
else if (left->tv_nsec < right->tv_nsec) {
125 }
else if (left->tv_nsec > right->tv_nsec) {
139 left->tv_sec += right->tv_sec;
140 left->tv_nsec += right->tv_nsec;
153 timespec_subtract(
struct timespec* left,
const struct timespec* right)
155 left->tv_sec -= right->tv_sec;
156 left->tv_nsec -= right->tv_nsec;
157 if (left->tv_nsec < 0L) {
168 const struct timespec*
171 struct timeval current_timeval;
172 ods_log_assert(netio);
174 if (gettimeofday(¤t_timeval, NULL) == -1) {
175 ods_log_crit(
"[%s] unable to get current time: " 176 "gettimeofday() failed (%s)", netio_str,
194 const sigset_t* sigmask)
196 fd_set readfds, writefds, exceptfds;
198 int have_timeout = 0;
199 struct timespec minimum_timeout;
213 memcpy(&minimum_timeout, timeout,
sizeof(
struct timespec));
223 if (handler->
fd >= 0 && handler->
fd < (
int) FD_SETSIZE) {
224 if (handler->
fd > max_fd) {
225 max_fd = handler->
fd;
228 FD_SET(handler->
fd, &readfds);
231 FD_SET(handler->
fd, &writefds);
234 FD_SET(handler->
fd, &exceptfds);
239 struct timespec relative;
240 relative.tv_sec = handler->
timeout->tv_sec;
241 relative.tv_nsec = handler->
timeout->tv_nsec;
245 timespec_compare(&relative, &minimum_timeout) < 0) {
247 minimum_timeout.tv_sec = relative.tv_sec;
248 minimum_timeout.tv_nsec = relative.tv_nsec;
249 timeout_handler = handler;
254 if (have_timeout && minimum_timeout.tv_sec < 0) {
259 ods_log_debug(
"[%s] dispatch timeout event without checking for " 260 "other events", netio_str);
261 if (timeout_handler &&
263 timeout_handler->event_handler(netio, timeout_handler,
269 rc =
pselect(max_fd + 1, &readfds, &writefds, &exceptfds,
270 have_timeout ? &minimum_timeout : NULL, sigmask);
272 if(errno == EINVAL || errno == EACCES || errno == EBADF) {
273 ods_fatal_exit(
"[%s] fatal error pselect: %s", netio_str,
284 ods_log_debug(
"[%s] no events before the minimum timeout " 285 "expired", netio_str);
290 if (timeout_handler &&
292 timeout_handler->event_handler(netio, timeout_handler,
303 for (l = netio->
handlers; l && rc; ) {
306 if (handler->
fd >= 0 && handler->
fd < (
int) FD_SETSIZE) {
308 if (FD_ISSET(handler->
fd, &readfds)) {
310 FD_CLR(handler->
fd, &readfds);
313 if (FD_ISSET(handler->
fd, &writefds)) {
315 FD_CLR(handler->
fd, &writefds);
318 if (FD_ISSET(handler->
fd, &exceptfds)) {
320 FD_CLR(handler->
fd, &exceptfds);
netio_handler_list_type * handlers
void timespec_add(struct timespec *left, const struct timespec *right)
netio_handler_type * handler
enum netio_events_enum netio_events_type
netio_handler_list_type * next
struct timespec cached_current_time
void netio_add_handler(netio_type *netio, netio_handler_type *handler)
const struct timespec * netio_current_time(netio_type *netio)
netio_event_handler_type event_handler
#define NANOSECONDS_PER_SECOND
void netio_remove_handler(netio_type *netio, netio_handler_type *handler)
netio_handler_list_type * deallocated
netio_events_type event_types
netio_type * netio_create()
struct timespec * timeout
int pselect(int n, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, const struct timespec *timeout, const sigset_t *sigmask)
netio_handler_list_type * dispatch_next
int netio_dispatch(netio_type *netio, const struct timespec *timeout, const sigset_t *sigmask)
void netio_cleanup(netio_type *netio)