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fix event start packets getting deleted while writing because we don't have a lock on them.

pull/3137/head
Isaac Connor 2021-02-06 20:11:27 -05:00
parent 5fac0903b1
commit ace93e2422
1 changed files with 22 additions and 9 deletions
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31
src/zm_monitor.cpp
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@ -1983,16 +1983,23 @@ bool Monitor::Analyse() {
snap_it, 0
);
ZMPacket *starting_packet = *(*start_it);
// This gets a lock on the starting packet
ZMPacket *starting_packet = packetqueue.get_packet(start_it);
event = new Event(this, *(starting_packet->timestamp), "Continuous", noteSetMap);
// Write out starting packets, do not modify packetqueue it will garbage collect itself
while ( (*start_it) != snap_it ) {
ZMPacket *p = packetqueue.get_packet(start_it);
if ( !p ) break;
event->AddPacket(p);
p->unlock();
while ( starting_packet and (*start_it) != snap_it ) {
event->AddPacket(starting_packet);
// Have added the packet, don't want to unlock it until we have locked the next
packetqueue.increment_it(start_it);
if ( (*start_it) == snap_it ) {
starting_packet->unlock();
break;
}
ZMPacket *p = packetqueue.get_packet(start_it);
starting_packet->unlock();
starting_packet = p;
}
packetqueue.free_it(start_it);
delete start_it;
@ -2068,10 +2075,16 @@ bool Monitor::Analyse() {
event = new Event(this, *(starting_packet->timestamp), cause, noteSetMap);
// Write out starting packets, do not modify packetqueue it will garbage collect itself
while ( *start_it != snap_it ) {
event->AddPacket(starting_packet);
packetqueue.increment_it(start_it);
if ( (*start_it) == snap_it ) {
starting_packet->unlock();
break;
}
ZMPacket *p = packetqueue.get_packet(start_it);
event->AddPacket(p);
p->unlock();
++(*start_it);
starting_packet->unlock();
starting_packet = p;
}
packetqueue.free_it(start_it);
delete start_it;