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Implemented strict locking of global lists

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This commit is contained in:
Klaus Schmidinger
2015-09-01 11:14:27 +02:00
parent 8a7bc6a0bb
commit 3cd5294d8a
41 changed files with 3512 additions and 2402 deletions
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119
eit.c
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@@ -8,7 +8,7 @@
* Robert Schneider <Robert.Schneider@web.de> and Rolf Hakenes <hakenes@hippomi.de>.
* Adapted to 'libsi' for VDR 1.3.0 by Marcel Wiesweg <marcel.wiesweg@gmx.de>.
*
* $Id: eit.c 3.6 2015/02/01 14:55:27 kls Exp $
* $Id: eit.c 4.1 2015/08/23 10:43:36 kls Exp $
*/
#include "eit.h"
@@ -24,31 +24,53 @@
class cEIT : public SI::EIT {
public:
cEIT(cSchedules *Schedules, int Source, u_char Tid, const u_char *Data, bool OnlyRunningStatus = false);
cEIT(cSectionSyncerHash &SectionSyncerHash, int Source, u_char Tid, const u_char *Data);
};
cEIT::cEIT(cSchedules *Schedules, int Source, u_char Tid, const u_char *Data, bool OnlyRunningStatus)
cEIT::cEIT(cSectionSyncerHash &SectionSyncerHash, int Source, u_char Tid, const u_char *Data)
:SI::EIT(Data, false)
{
if (!CheckCRCAndParse())
return;
int HashId = Tid * getServiceId();
cSectionSyncerEntry *SectionSyncerEntry = SectionSyncerHash.Get(HashId);
if (!SectionSyncerEntry) {
SectionSyncerEntry = new cSectionSyncerEntry;
SectionSyncerHash.Add(SectionSyncerEntry, HashId);
}
bool Process = SectionSyncerEntry->Sync(getVersionNumber(), getSectionNumber(), getLastSectionNumber());
if (Tid != 0x4E && !Process) // we need to set the 'seen' tag to watch the running status of the present/following event
return;
time_t Now = time(NULL);
if (Now < VALID_TIME)
return; // we need the current time for handling PDC descriptors
if (!Channels.Lock(false, 10))
cStateKey ChannelsStateKey;
cChannels *Channels = cChannels::GetChannelsWrite(ChannelsStateKey, 10);
if (!Channels) {
SectionSyncerEntry->Repeat(); // let's not miss any section of the EIT
return;
}
tChannelID channelID(Source, getOriginalNetworkId(), getTransportStreamId(), getServiceId());
cChannel *channel = Channels.GetByChannelID(channelID, true);
if (!channel || EpgHandlers.IgnoreChannel(channel)) {
Channels.Unlock();
cChannel *Channel = Channels->GetByChannelID(channelID, true);
if (!Channel || EpgHandlers.IgnoreChannel(Channel)) {
ChannelsStateKey.Remove(false);
return;
}
EpgHandlers.BeginSegmentTransfer(channel, OnlyRunningStatus);
bool handledExternally = EpgHandlers.HandledExternally(channel);
cSchedule *pSchedule = (cSchedule *)Schedules->GetSchedule(channel, true);
cStateKey SchedulesStateKey;
cSchedules *Schedules = cSchedules::GetSchedulesWrite(SchedulesStateKey, 10);
if (!Schedules) {
SectionSyncerEntry->Repeat(); // let's not miss any section of the EIT
ChannelsStateKey.Remove(false);
return;
}
bool ChannelsModified = false;
EpgHandlers.BeginSegmentTransfer(Channel);
bool handledExternally = EpgHandlers.HandledExternally(Channel);
cSchedule *pSchedule = (cSchedule *)Schedules->GetSchedule(Channel, true);
bool Empty = true;
bool Modified = false;
@@ -74,8 +96,6 @@ cEIT::cEIT(cSchedules *Schedules, int Source, u_char Tid, const u_char *Data, bo
cEvent *rEvent = NULL;
cEvent *pEvent = (cEvent *)pSchedule->GetEvent(SiEitEvent.getEventId(), StartTime);
if (!pEvent || handledExternally) {
if (OnlyRunningStatus)
continue;
if (handledExternally && !EpgHandlers.IsUpdate(SiEitEvent.getEventId(), StartTime, Tid, getVersionNumber()))
continue;
// If we don't have that event yet, we create a new one.
@@ -94,14 +114,6 @@ cEIT::cEIT(cSchedules *Schedules, int Source, u_char Tid, const u_char *Data, bo
// The lower the table ID, the more "current" the information.
if (Tid > TableID)
continue;
// If the new event comes from the same table and has the same version number
// as the existing one, let's skip it to avoid unnecessary work.
// Unfortunately some stations (like, e.g. "Premiere") broadcast their EPG data on several transponders (like
// the actual Premiere transponder and the Sat.1/Pro7 transponder), but use different version numbers on
// each of them :-( So if one DVB card is tuned to the Premiere transponder, while an other one is tuned
// to the Sat.1/Pro7 transponder, events will keep toggling because of the bogus version numbers.
else if (Tid == TableID && pEvent->Version() == getVersionNumber())
continue;
EpgHandlers.SetEventID(pEvent, SiEitEvent.getEventId()); // unfortunately some stations use different event ids for the same event in different tables :-(
EpgHandlers.SetStartTime(pEvent, StartTime);
EpgHandlers.SetDuration(pEvent, Duration);
@@ -110,11 +122,9 @@ cEIT::cEIT(cSchedules *Schedules, int Source, u_char Tid, const u_char *Data, bo
pEvent->SetTableID(Tid);
if (Tid == 0x4E) { // we trust only the present/following info on the actual TS
if (SiEitEvent.getRunningStatus() >= SI::RunningStatusNotRunning)
pSchedule->SetRunningStatus(pEvent, SiEitEvent.getRunningStatus(), channel);
}
if (OnlyRunningStatus) {
pEvent->SetVersion(0xFF); // we have already changed the table id above, so set the version to an invalid value to make sure the next full run will be executed
continue; // do this before setting the version, so that the full update can be done later
pSchedule->SetRunningStatus(pEvent, SiEitEvent.getRunningStatus(), Channel);
if (!Process)
continue;
}
pEvent->SetVersion(getVersionNumber());
@@ -206,7 +216,7 @@ cEIT::cEIT(cSchedules *Schedules, int Source, u_char Tid, const u_char *Data, bo
break;
case SI::TimeShiftedEventDescriptorTag: {
SI::TimeShiftedEventDescriptor *tsed = (SI::TimeShiftedEventDescriptor *)d;
cSchedule *rSchedule = (cSchedule *)Schedules->GetSchedule(tChannelID(Source, channel->Nid(), channel->Tid(), tsed->getReferenceServiceId()));
cSchedule *rSchedule = (cSchedule *)Schedules->GetSchedule(tChannelID(Source, Channel->Nid(), Channel->Tid(), tsed->getReferenceServiceId()));
if (!rSchedule)
break;
rEvent = (cEvent *)rSchedule->GetEvent(tsed->getReferenceEventId());
@@ -226,18 +236,18 @@ cEIT::cEIT(cSchedules *Schedules, int Source, u_char Tid, const u_char *Data, bo
char linkName[ld->privateData.getLength() + 1];
strn0cpy(linkName, (const char *)ld->privateData.getData(), sizeof(linkName));
// TODO is there a standard way to determine the character set of this string?
cChannel *link = Channels.GetByChannelID(linkID);
if (link != channel) { // only link to other channels, not the same one
//fprintf(stderr, "Linkage %s %4d %4d %5d %5d %5d %5d %02X '%s'\n", hit ? "*" : "", channel->Number(), link ? link->Number() : -1, SiEitEvent.getEventId(), ld->getOriginalNetworkId(), ld->getTransportStreamId(), ld->getServiceId(), ld->getLinkageType(), linkName);//XXX
cChannel *link = Channels->GetByChannelID(linkID);
if (link != Channel) { // only link to other channels, not the same one
if (link) {
if (Setup.UpdateChannels == 1 || Setup.UpdateChannels >= 3)
link->SetName(linkName, "", "");
ChannelsModified |= link->SetName(linkName, "", "");
}
else if (Setup.UpdateChannels >= 4) {
cChannel *transponder = channel;
if (channel->Tid() != ld->getTransportStreamId())
transponder = Channels.GetByTransponderID(linkID);
link = Channels.NewChannel(transponder, linkName, "", "", ld->getOriginalNetworkId(), ld->getTransportStreamId(), ld->getServiceId());
cChannel *Transponder = Channel;
if (Channel->Tid() != ld->getTransportStreamId())
Transponder = Channels->GetByTransponderID(linkID);
link = Channels->NewChannel(Transponder, linkName, "", "", ld->getOriginalNetworkId(), ld->getTransportStreamId(), ld->getServiceId());
ChannelsModified = true;
//XXX patFilter->Trigger();
}
if (link) {
@@ -247,7 +257,7 @@ cEIT::cEIT(cSchedules *Schedules, int Source, u_char Tid, const u_char *Data, bo
}
}
else
channel->SetPortalName(linkName);
ChannelsModified |= Channel->SetPortalName(linkName);
}
}
}
@@ -293,7 +303,7 @@ cEIT::cEIT(cSchedules *Schedules, int Source, u_char Tid, const u_char *Data, bo
EpgHandlers.FixEpgBugs(pEvent);
if (LinkChannels)
channel->SetLinkChannels(LinkChannels);
ChannelsModified |= Channel->SetLinkChannels(LinkChannels);
Modified = true;
EpgHandlers.HandleEvent(pEvent);
if (handledExternally)
@@ -302,16 +312,17 @@ cEIT::cEIT(cSchedules *Schedules, int Source, u_char Tid, const u_char *Data, bo
if (Tid == 0x4E) {
if (Empty && getSectionNumber() == 0)
// ETR 211: an empty entry in section 0 of table 0x4E means there is currently no event running
pSchedule->ClrRunningStatus(channel);
pSchedule->ClrRunningStatus(Channel);
pSchedule->SetPresentSeen();
}
if (Modified && !OnlyRunningStatus) {
if (Modified) {
EpgHandlers.SortSchedule(pSchedule);
EpgHandlers.DropOutdated(pSchedule, SegmentStart, SegmentEnd, Tid, getVersionNumber());
Schedules->SetModified(pSchedule);
pSchedule->SetModified();
}
Channels.Unlock();
EpgHandlers.EndSegmentTransfer(Modified, OnlyRunningStatus);
SchedulesStateKey.Remove(Modified);
ChannelsStateKey.Remove(ChannelsModified);
EpgHandlers.EndSegmentTransfer(Modified);
}
// --- cTDT ------------------------------------------------------------------
@@ -372,6 +383,13 @@ cEitFilter::cEitFilter(void)
Set(0x14, 0x70); // TDT
}
void cEitFilter::SetStatus(bool On)
{
cMutexLock MutexLock(&mutex);
cFilter::SetStatus(On);
sectionSyncerHash.Clear();
}
void cEitFilter::SetDisableUntil(time_t Time)
{
disableUntil = Time;
@@ -379,6 +397,7 @@ void cEitFilter::SetDisableUntil(time_t Time)
void cEitFilter::Process(u_short Pid, u_char Tid, const u_char *Data, int Length)
{
cMutexLock MutexLock(&mutex);
if (disableUntil) {
if (time(NULL) > disableUntil)
disableUntil = 0;
@@ -387,22 +406,8 @@ void cEitFilter::Process(u_short Pid, u_char Tid, const u_char *Data, int Length
}
switch (Pid) {
case 0x12: {
if (Tid >= 0x4E && Tid <= 0x6F) {
cSchedulesLock SchedulesLock(true, 10);
cSchedules *Schedules = (cSchedules *)cSchedules::Schedules(SchedulesLock);
if (Schedules)
cEIT EIT(Schedules, Source(), Tid, Data);
else {
// If we don't get a write lock, let's at least get a read lock, so
// that we can set the running status and 'seen' timestamp (well, actually
// with a read lock we shouldn't be doing that, but it's only integers that
// get changed, so it should be ok)
cSchedulesLock SchedulesLock;
cSchedules *Schedules = (cSchedules *)cSchedules::Schedules(SchedulesLock);
if (Schedules)
cEIT EIT(Schedules, Source(), Tid, Data, true);
}
}
if (Tid >= 0x4E && Tid <= 0x6F)
cEIT EIT(sectionSyncerHash, Source(), Tid, Data);
}
break;
case 0x14: {