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[SYCL][L0]: Check Queue refcnt prior to using L0 members #2471

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merged 1 commit into from
Sep 15, 2020
Merged

[SYCL][L0]: Check Queue refcnt prior to using L0 members #2471

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22 changes: 12 additions & 10 deletions sycl/plugins/level_zero/pi_level_zero.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -3018,16 +3018,18 @@ pi_result piEventsWait(pi_uint32 NumEvents, const pi_event *EventList) {
// Event has been signaled: If the fence for the associated command list
// is signalled, then reset the fence and command list and add them to the
// available list for reuse in PI calls.
EventList[I]->Queue->ZeCommandListFenceMapMutex.lock();
ze_result_t ZeResult = ZE_CALL_NOCHECK(zeFenceQueryStatus(
EventList[I]
->Queue->ZeCommandListFenceMap[EventList[I]->ZeCommandList]));
if (ZeResult == ZE_RESULT_SUCCESS) {
EventList[I]->Queue->resetCommandListFenceEntry(
EventList[I]->ZeCommandList, true);
EventList[I]->ZeCommandList = nullptr;
if (EventList[I]->Queue->RefCount > 0) {
EventList[I]->Queue->ZeCommandListFenceMapMutex.lock();
ze_result_t ZeResult = ZE_CALL_NOCHECK(zeFenceQueryStatus(
EventList[I]
->Queue->ZeCommandListFenceMap[EventList[I]->ZeCommandList]));
if (ZeResult == ZE_RESULT_SUCCESS) {
EventList[I]->Queue->resetCommandListFenceEntry(
EventList[I]->ZeCommandList, true);
EventList[I]->ZeCommandList = nullptr;
}
EventList[I]->Queue->ZeCommandListFenceMapMutex.unlock();
}
EventList[I]->Queue->ZeCommandListFenceMapMutex.unlock();
}
}
return PI_SUCCESS;
Expand Down Expand Up @@ -3059,7 +3061,7 @@ pi_result piEventRelease(pi_event Event) {
// If the fence associated with this command list has signalled, then
// Reset the Command List Used in this event and put it back on the
// available list.
if (Event->Queue->ZeCommandQueue) {
if (Event->Queue->RefCount > 0) {
Event->Queue->ZeCommandListFenceMapMutex.lock();
ze_result_t ZeResult = ZE_CALL_NOCHECK(zeFenceQueryStatus(
Event->Queue->ZeCommandListFenceMap[Event->ZeCommandList]));
Expand Down