110 lines
2.6 KiB
C
110 lines
2.6 KiB
C
/*
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* poller.c: SAT>IP plugin for the Video Disk Recorder
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*
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* See the README file for copyright information and how to reach the author.
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*
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*/
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#include <sys/epoll.h>
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#include "common.h"
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#include "poller.h"
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cSatipPoller *cSatipPoller::instanceS = NULL;
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cSatipPoller *cSatipPoller::GetInstance(void)
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{
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if (!instanceS)
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instanceS = new cSatipPoller();
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return instanceS;
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}
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bool cSatipPoller::Initialize(void)
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{
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debug("cSatipPoller::%s()", __FUNCTION__);
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if (instanceS)
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instanceS->Activate();
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return true;
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}
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void cSatipPoller::Destroy(void)
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{
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debug("cSatipPoller::%s()", __FUNCTION__);
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if (instanceS)
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instanceS->Deactivate();
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}
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cSatipPoller::cSatipPoller()
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: cThread("SAT>IP poller"),
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mutexM(),
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fdM(epoll_create(eMaxFileDescriptors))
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{
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debug("cSatipPoller::%s()", __FUNCTION__);
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}
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cSatipPoller::~cSatipPoller()
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{
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debug("cSatipPoller::%s()", __FUNCTION__);
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Deactivate();
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cMutexLock MutexLock(&mutexM);
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close(fdM);
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// Free allocated memory
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}
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void cSatipPoller::Activate(void)
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{
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// Start the thread
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Start();
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}
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void cSatipPoller::Deactivate(void)
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{
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debug("cSatipPoller::%s()", __FUNCTION__);
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cMutexLock MutexLock(&mutexM);
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if (Running())
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Cancel(3);
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}
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void cSatipPoller::Action(void)
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{
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debug("cSatipPoller::%s(): entering", __FUNCTION__);
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struct epoll_event events[eMaxFileDescriptors];
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// Increase priority
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SetPriority(-1);
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// Do the thread loop
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while (Running()) {
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int nfds = epoll_wait(fdM, events, eMaxFileDescriptors, -1);
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ERROR_IF_FUNC((nfds == -1), "epoll_wait() failed", break, ;);
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for (int i = 0; i < nfds; ++i) {
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cSatipPollerIf* poll = reinterpret_cast<cSatipPollerIf *>(events[i].data.ptr);
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if (poll)
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poll->Action(events[i].events);
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}
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}
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debug("cSatipPoller::%s(): exiting", __FUNCTION__);
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}
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bool cSatipPoller::Register(cSatipPollerIf &pollerP)
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{
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debug("cSatipPoller::%s(%d)", __FUNCTION__, pollerP.GetFd());
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cMutexLock MutexLock(&mutexM);
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struct epoll_event ev;
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ev.events = EPOLLIN | EPOLLET;
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ev.data.ptr = &pollerP;
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ERROR_IF_RET(epoll_ctl(fdM, EPOLL_CTL_ADD, pollerP.GetFd(), &ev) == -1, "epoll_ctl(EPOLL_CTL_ADD) failed", return false);
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debug("cSatipPoller::%s(%d): Added interface", __FUNCTION__, pollerP.GetFd());
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return true;
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}
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bool cSatipPoller::Unregister(cSatipPollerIf &pollerP)
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{
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debug("cSatipPoller::%s(%d)", __FUNCTION__, pollerP.GetFd());
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cMutexLock MutexLock(&mutexM);
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ERROR_IF_RET((epoll_ctl(fdM, EPOLL_CTL_DEL, pollerP.GetFd(), NULL) == -1), "epoll_ctl(EPOLL_CTL_DEL) failed", return false);
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debug("cSatipPoller::%s(%d): Removed interface", __FUNCTION__, pollerP.GetFd());
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return true;
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}
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