174 lines
4.0 KiB
C
174 lines
4.0 KiB
C
/****************************************************************************
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* This file is part of the project AqHome.
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* AqHome (c) by 2025 Martin Preuss, all rights reserved.
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*
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* The license for this file can be found in the file COPYING which you
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* should have received along with this file.
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****************************************************************************/
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include "./eventloop_p.h"
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#include "./fdobject.h"
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#include <gwenhywfar/debug.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/select.h>
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#include <errno.h>
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#include <string.h>
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/* ------------------------------------------------------------------------------------------------
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* forward declarations
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* ------------------------------------------------------------------------------------------------
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*/
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static int _sampleFdsIntoSet(AQH_OBJECT_LIST2 *ol, fd_set *fds, int mode);
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static void _markReadyFdObjects(AQH_OBJECT_LIST2 *ol, fd_set *fds, int mode);
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static void _signalReadyFdObjects(AQH_OBJECT_LIST2 *ol);
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/* ------------------------------------------------------------------------------------------------
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* code
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* ------------------------------------------------------------------------------------------------
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*/
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void AQH_EventLoop_Run(AQH_EVENT_LOOP *eventLoop, int timeoutInMillisecs)
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{
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fd_set fdRead;
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fd_set fdWrite;
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int highestFd=-1;
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int rv;
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FD_ZERO(&fdRead);
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FD_ZERO(&fdWrite);
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highestFd=_sampleFdsIntoSet(eventLoop->fdObjectList, &fdRead, AQH_FDOBJECT_FDMODE_READ);
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rv=_sampleFdsIntoSet(eventLoop->fdObjectList, &fdWrite, AQH_FDOBJECT_FDMODE_WRITE);
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highestFd=(rv>highestFd)?rv:highestFd;
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if (highestFd>-1) {
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struct timeval tv;
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tv.tv_sec=timeoutInMillisecs/1000;
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tv.tv_usec=(timeoutInMillisecs%1000)*1000;
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rv=select(highestFd+1, &fdRead, &fdWrite, NULL, &tv);
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if (rv>0) {
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/* some fds became active */
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_markReadyFdObjects(eventLoop->fdObjectList, &fdRead, AQH_FDOBJECT_FDMODE_READ);
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_markReadyFdObjects(eventLoop->fdObjectList, &fdWrite, AQH_FDOBJECT_FDMODE_WRITE);
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_signalReadyFdObjects(eventLoop->fdObjectList);
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}
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else if (rv<0) {
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if (errno!=EINTR) {
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/* error */
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DBG_ERROR(AQH_LOGDOMAIN, "Error on SELECT: %d (%s)", errno, strerror(errno));
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}
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}
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else {
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/* no fd became active (TODO: maybe signal deep idle objects?) */
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}
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}
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}
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int _sampleFdsIntoSet(AQH_OBJECT_LIST2 *ol, fd_set *fds, int mode)
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{
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AQH_OBJECT_LIST2_ITERATOR *it;
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int highestFd=-1;
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it=AQH_Object_List2_First(ol);
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if (it) {
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AQH_OBJECT *o;
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o=AQH_Object_List2Iterator_Data(it);
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while(o) {
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int m;
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m=AQH_FdObject_GetFdMode(o);
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if (m==mode) {
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int fd;
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fd=AQH_FdObject_GetFd(o);
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if (fd>-1) {
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highestFd=(fd>highestFd)?fd:highestFd;
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FD_SET(fd, fds);
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}
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}
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o=AQH_Object_List2Iterator_Next(it);
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}
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AQH_Object_List2Iterator_free(it);
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}
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return highestFd;
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}
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void _markReadyFdObjects(AQH_OBJECT_LIST2 *ol, fd_set *fds, int mode)
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{
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AQH_OBJECT_LIST2_ITERATOR *it;
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it=AQH_Object_List2_First(ol);
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if (it) {
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AQH_OBJECT *o;
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o=AQH_Object_List2Iterator_Data(it);
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while(o) {
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int m;
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m=AQH_FdObject_GetFdMode(o);
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if (m==mode) {
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int fd;
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fd=AQH_FdObject_GetFd(o);
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if (FD_ISSET(fd, fds))
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AQH_Object_AddFlags(o, AQH_OBJECT_FLAGS_FIRE);
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}
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o=AQH_Object_List2Iterator_Next(it);
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}
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AQH_Object_List2Iterator_free(it);
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}
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}
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void _signalReadyFdObjects(AQH_OBJECT_LIST2 *ol)
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{
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AQH_OBJECT_LIST2_ITERATOR *it;
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it=AQH_Object_List2_First(ol);
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if (it) {
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AQH_OBJECT *o;
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o=AQH_Object_List2Iterator_Data(it);
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while(o) {
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if (AQH_Object_GetFlags(o) & AQH_OBJECT_FLAGS_FIRE) {
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AQH_Object_SubFlags(o, AQH_OBJECT_FLAGS_FIRE);
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AQH_Object_EmitSignal(o, AQH_FDOBJECT_SIGNAL_ISREADY, 0, NULL);
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}
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o=AQH_Object_List2Iterator_Next(it);
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}
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AQH_Object_List2Iterator_free(it);
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}
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}
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