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-rw-r--r--src/common/evdp_epoll.c356
1 files changed, 173 insertions, 183 deletions
diff --git a/src/common/evdp_epoll.c b/src/common/evdp_epoll.c
index 9f7c3d8ea..0357dfc66 100644
--- a/src/common/evdp_epoll.c
+++ b/src/common/evdp_epoll.c
@@ -1,5 +1,5 @@
//
-// Event Dispatcher Abstraction for EPOLL
+// Event Dispatcher Abstraction for EPOLL
//
// Author: Florian Wilkemeyer <fw@f-ws.de>
//
@@ -23,220 +23,210 @@
#include "../common/evdp.h"
-#define EPOLL_MAX_PER_CYCLE 10 // Max Events to coalesc. per cycle.
+#define EPOLL_MAX_PER_CYCLE 10 // Max Events to coalesc. per cycle.
static int epoll_fd = -1;
-void evdp_init()
-{
-
- epoll_fd = epoll_create(EPOLL_MAX_PER_CYCLE);
- if (epoll_fd == -1) {
- ShowFatalError("evdp [EPOLL]: Cannot create event dispatcher (errno: %u / %s)\n", errno, strerror(errno));
- exit(1);
- }
-
+void evdp_init(){
+
+ epoll_fd = epoll_create( EPOLL_MAX_PER_CYCLE );
+ if(epoll_fd == -1){
+ ShowFatalError("evdp [EPOLL]: Cannot create event dispatcher (errno: %u / %s)\n", errno, strerror(errno) );
+ exit(1);
+ }
+
}//end: evdp_init()
-void evdp_final()
-{
-
- if (epoll_fd != -1) {
- close(epoll_fd);
- epoll_fd = -1;
- }
-
+void evdp_final(){
+
+ if(epoll_fd != -1){
+ close(epoll_fd);
+ epoll_fd = -1;
+ }
+
}//end: evdp_final()
-int32 evdp_wait(EVDP_EVENT *out_fds, int32 max_events, int32 timeout_ticks)
-{
- struct epoll_event l_events[EPOLL_MAX_PER_CYCLE];
- register struct epoll_event *ev;
- register int nfds, n;
-
- if (max_events > EPOLL_MAX_PER_CYCLE)
- max_events = EPOLL_MAX_PER_CYCLE;
-
- nfds = epoll_wait(epoll_fd, l_events, max_events, timeout_ticks);
- if (nfds == -1) {
- // @TODO: check if core is in shutdown mode. if - ignroe error.
-
- ShowFatalError("evdp [EPOLL]: epoll_wait returned bad / unexpected status (errno: %u / %s)\n", errno, strerror(errno));
- exit(1); //..
- }
-
- // Loop thru all events and copy it to the local ra evdp_event.. struct.
- for (n = 0; n < nfds; n++) {
- ev = &l_events[n];
-
- out_fds->fd = ev->data.fd;
- out_fds->events = 0; // clear
-
- if (ev->events & EPOLLHUP)
- out_fds->events |= EVDP_EVENT_HUP;
-
- if (ev->events & EPOLLIN)
- out_fds->events |= EVDP_EVENT_IN;
-
- if (ev->events & EPOLLOUT)
- out_fds->events |= EVDP_EVENT_OUT;
-
- out_fds++;
- }
-
- return nfds; // 0 on timeout or > 0 ..
+int32 evdp_wait(EVDP_EVENT *out_fds, int32 max_events, int32 timeout_ticks){
+ struct epoll_event l_events[EPOLL_MAX_PER_CYCLE];
+ register struct epoll_event *ev;
+ register int nfds, n;
+
+ if(max_events > EPOLL_MAX_PER_CYCLE)
+ max_events = EPOLL_MAX_PER_CYCLE;
+
+ nfds = epoll_wait( epoll_fd, l_events, max_events, timeout_ticks);
+ if(nfds == -1){
+ // @TODO: check if core is in shutdown mode. if - ignroe error.
+
+ ShowFatalError("evdp [EPOLL]: epoll_wait returned bad / unexpected status (errno: %u / %s)\n", errno, strerror(errno));
+ exit(1); //..
+ }
+
+ // Loop thru all events and copy it to the local ra evdp_event.. struct.
+ for(n = 0; n < nfds; n++){
+ ev = &l_events[n];
+
+ out_fds->fd = ev->data.fd;
+ out_fds->events = 0; // clear
+
+ if(ev->events & EPOLLHUP)
+ out_fds->events |= EVDP_EVENT_HUP;
+
+ if(ev->events & EPOLLIN)
+ out_fds->events |= EVDP_EVENT_IN;
+
+ if(ev->events & EPOLLOUT)
+ out_fds->events |= EVDP_EVENT_OUT;
+
+ out_fds++;
+ }
+
+ return nfds; // 0 on timeout or > 0 ..
}//end: evdp_wait()
-void evdp_remove(int32 fd, EVDP_DATA *ep)
-{
-
- if (ep->ev_added == true) {
-
- if (epoll_ctl(epoll_fd, EPOLL_CTL_DEL, fd, &ep->ev_data) != 0) {
- ShowError("evdp [EPOLL]: evdp_remove - epoll_ctl (EPOLL_CTL_DEL) failed! fd #%u (errno %u / %s)\n", fd, errno, strerror(errno));
- }
-
- ep->ev_data.events = 0; // clear struct.
- ep->ev_data.data.fd = -1; // .. clear struct ..
-
- ep->ev_added = false; // not added!
- }
+void evdp_remove(int32 fd, EVDP_DATA *ep){
+
+ if(ep->ev_added == true){
+
+ if( epoll_ctl(epoll_fd, EPOLL_CTL_DEL, fd, &ep->ev_data) != 0){
+ ShowError("evdp [EPOLL]: evdp_remove - epoll_ctl (EPOLL_CTL_DEL) failed! fd #%u (errno %u / %s)\n", fd, errno, strerror(errno));
+ }
+
+ ep->ev_data.events = 0; // clear struct.
+ ep->ev_data.data.fd = -1; // .. clear struct ..
+ ep->ev_added = false; // not added!
+ }
+
}//end: evdp_remove()
-bool evdp_addlistener(int32 fd, EVDP_DATA *ep)
-{
-
- ep->ev_data.events = EPOLLET|EPOLLIN;
- ep->ev_data.data.fd = fd;
-
- // No check here for 'added ?'
- // listeners cannot be added twice.
- //
- if (epoll_ctl(epoll_fd, EPOLL_CTL_ADD, fd, &ep->ev_data) != 0) {
- ShowError("evdp [EPOLL]: evdp_addlistener - epoll_ctl (EPOLL_CTL_ADD) faield! fd #%u (errno %u / %s)\n", fd, errno, strerror(errno));
- ep->ev_data.events = 0;
- ep->ev_data.data.fd = -1;
- return false;
- }
-
- ep->ev_added = true;
-
- return true;
+bool evdp_addlistener(int32 fd, EVDP_DATA *ep){
+
+ ep->ev_data.events = EPOLLET|EPOLLIN;
+ ep->ev_data.data.fd = fd;
+
+ // No check here for 'added ?'
+ // listeners cannot be added twice.
+ //
+ if( epoll_ctl(epoll_fd, EPOLL_CTL_ADD, fd, &ep->ev_data) != 0 ){
+ ShowError("evdp [EPOLL]: evdp_addlistener - epoll_ctl (EPOLL_CTL_ADD) faield! fd #%u (errno %u / %s)\n", fd, errno, strerror(errno));
+ ep->ev_data.events = 0;
+ ep->ev_data.data.fd = -1;
+ return false;
+ }
+
+ ep->ev_added = true;
+
+ return true;
}//end: evdp_addlistener()
-bool evdp_addclient(int32 fd, EVDP_DATA *ep)
-{
-
- ep->ev_data.events = EPOLLIN | EPOLLHUP;
- ep->ev_data.data.fd = fd;
-
- // No check for "added?" here,
- // this function only gets called upon accpept.
- //
-
- if (epoll_ctl(epoll_fd, EPOLL_CTL_ADD, fd, &ep->ev_data) != 0) {
- ShowError("evdp [EPOLL]: evdp_addclient - epoll_ctl (EPOLL_CTL_ADD) failed! fd #%u (errno %u / %s)\n", fd, errno, strerror(errno));
- ep->ev_data.events = 0;
- ep->ev_data.data.fd = -1;
- return false;
- }
-
- ep->ev_added = true;
-
- return true;
+bool evdp_addclient(int32 fd, EVDP_DATA *ep){
+
+ ep->ev_data.events = EPOLLIN | EPOLLHUP;
+ ep->ev_data.data.fd = fd;
+
+ // No check for "added?" here,
+ // this function only gets called upon accpept.
+ //
+
+ if( epoll_ctl(epoll_fd, EPOLL_CTL_ADD, fd, &ep->ev_data) != 0){
+ ShowError("evdp [EPOLL]: evdp_addclient - epoll_ctl (EPOLL_CTL_ADD) failed! fd #%u (errno %u / %s)\n", fd, errno, strerror(errno));
+ ep->ev_data.events = 0;
+ ep->ev_data.data.fd = -1;
+ return false;
+ }
+
+ ep->ev_added = true;
+
+ return true;
}//end: evdp_addclient()
-bool evdp_addconnecting(int32 fd, EVDP_DATA *ep)
-{
-
- ep->ev_data.events = EPOLLET | EPOLLOUT | EPOLLHUP;
- ep->ev_data.data.fd = fd;
-
- if (epoll_ctl(epoll_fd, EPOLL_CTL_ADD, fd, &ep->ev_data) != 0) {
- ShowError("evdp [EPOLL]: evdp_addconnecting - epoll_ctl (EPOLL_CTL_ADD) failed! fd #%u (errno %u / %s)\n", fd, errno, strerror(errno));
- ep->ev_data.events = 0;
- ep->ev_data.data.fd = -1;
- }
-
- ep->ev_added = true;
-
- return true;
+bool evdp_addconnecting(int32 fd, EVDP_DATA *ep){
+
+ ep->ev_data.events = EPOLLET | EPOLLOUT | EPOLLHUP;
+ ep->ev_data.data.fd = fd;
+
+ if( epoll_ctl(epoll_fd, EPOLL_CTL_ADD, fd, &ep->ev_data) != 0){
+ ShowError("evdp [EPOLL]: evdp_addconnecting - epoll_ctl (EPOLL_CTL_ADD) failed! fd #%u (errno %u / %s)\n", fd, errno, strerror(errno));
+ ep->ev_data.events = 0;
+ ep->ev_data.data.fd = -1;
+ }
+
+ ep->ev_added = true;
+
+ return true;
}//end: evdp_addconnecting()
-bool evdp_outgoingconnection_established(int32 fd, EVDP_DATA *ep)
-{
- int32 saved_mask;
-
- if (ep->ev_added != true) {
- // !
- ShowError("evdp [EPOLL]: evdp_outgoingconnection_established fd #%u is not added to event dispatcher! invalid call.\n", fd);
- return false;
- }
-
- saved_mask = ep->ev_data.events;
-
- ep->ev_data.events = EPOLLIN | EPOLLHUP;
-
- if (epoll_ctl(epoll_fd, EPOLL_CTL_MOD, fd, &ep->ev_data) != 0) {
- ep->ev_data.events = saved_mask; // restore old mask.
- ShowError("evdp [EPOLL]: evdp_outgoingconnection_established - epoll_ctl (EPOLL_CTL_MOD) failed! fd #%u (errno %u / %s)\n", fd, errno, strerror(errno));
- return false;
- }
-
- return true;
+bool evdp_outgoingconnection_established(int32 fd, EVDP_DATA *ep){
+ int32 saved_mask;
+
+ if(ep->ev_added != true){
+ // !
+ ShowError("evdp [EPOLL]: evdp_outgoingconnection_established fd #%u is not added to event dispatcher! invalid call.\n", fd);
+ return false;
+ }
+
+ saved_mask = ep->ev_data.events;
+
+ ep->ev_data.events = EPOLLIN | EPOLLHUP;
+
+ if( epoll_ctl(epoll_fd, EPOLL_CTL_MOD, fd, &ep->ev_data) != 0){
+ ep->ev_data.events = saved_mask; // restore old mask.
+ ShowError("evdp [EPOLL]: evdp_outgoingconnection_established - epoll_ctl (EPOLL_CTL_MOD) failed! fd #%u (errno %u / %s)\n", fd, errno, strerror(errno));
+ return false;
+ }
+
+ return true;
}//end: evdp_outgoingconnection_established()
-bool evdp_writable_add(int32 fd, EVDP_DATA *ep)
-{
-
- if (ep->ev_added != true) {
- ShowError("evdp [EPOLL]: evdp_writable_add - tried to add not added fd #%u\n",fd);
- return false;
- }
-
- if (!(ep->ev_data.events & EPOLLOUT)) { //
-
- ep->ev_data.events |= EPOLLOUT;
- if (epoll_ctl(epoll_fd, EPOLL_CTL_MOD, fd, &ep->ev_data) != 0) {
- ShowError("evdp [EPOLL]: evdp_writable_add - epoll_ctl (EPOLL_CTL_MOD) failed! fd #%u (errno: %u / %s)\n", fd, errno, strerror(errno));
- ep->ev_data.events &= ~EPOLLOUT; // remove from local flagmask due to failed syscall.
- return false;
- }
- }
-
- return true;
+bool evdp_writable_add(int32 fd, EVDP_DATA *ep){
+
+ if(ep->ev_added != true){
+ ShowError("evdp [EPOLL]: evdp_writable_add - tried to add not added fd #%u\n",fd);
+ return false;
+ }
+
+ if(! (ep->ev_data.events & EPOLLOUT) ){ //
+
+ ep->ev_data.events |= EPOLLOUT;
+ if( epoll_ctl(epoll_fd, EPOLL_CTL_MOD, fd, &ep->ev_data) != 0 ){
+ ShowError("evdp [EPOLL]: evdp_writable_add - epoll_ctl (EPOLL_CTL_MOD) failed! fd #%u (errno: %u / %s)\n", fd, errno, strerror(errno));
+ ep->ev_data.events &= ~EPOLLOUT; // remove from local flagmask due to failed syscall.
+ return false;
+ }
+ }
+
+ return true;
}//end: evdp_writable_add()
-void evdp_writable_remove(int32 fd, EVDP_DATA *ep)
-{
-
- if (ep->ev_added != true) {
- ShowError("evdp [EPOLL]: evdp_writable_remove - tried to remove not added fd #%u\n", fd);
- return;
- }
-
- if (ep->ev_data.events & EPOLLOUT) {
-
- ep->ev_data.events &= ~EPOLLOUT;
- if (epoll_ctl(epoll_fd, EPOLL_CTL_MOD, fd, &ep->ev_data) != 0) {
- ShowError("evdp [EPOLL]: evdp_writable_remove - epoll_ctl (EPOLL_CTL_MOD) failed! fd #%u (errno %u / %s)\n", fd, errno, strerror(errno));
- ep->ev_data.events |= EPOLLOUT; // add back to local flagmask because of failed syscall.
- return;
- }
- }
-
- return;
+void evdp_writable_remove(int32 fd, EVDP_DATA *ep){
+
+ if(ep->ev_added != true){
+ ShowError("evdp [EPOLL]: evdp_writable_remove - tried to remove not added fd #%u\n", fd);
+ return;
+ }
+
+ if( ep->ev_data.events & EPOLLOUT ){
+
+ ep->ev_data.events &= ~EPOLLOUT;
+ if( epoll_ctl(epoll_fd, EPOLL_CTL_MOD, fd, &ep->ev_data) != 0){
+ ShowError("evdp [EPOLL]: evdp_writable_remove - epoll_ctl (EPOLL_CTL_MOD) failed! fd #%u (errno %u / %s)\n", fd, errno, strerror(errno));
+ ep->ev_data.events |= EPOLLOUT; // add back to local flagmask because of failed syscall.
+ return;
+ }
+ }
+
+ return;
}//end: evdp_writable_remove()
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