Waiter requires timestamp

const bool requireTimestamps = true;
NvSciSyncAttrKeyValuePair keyValue[] = {
    // ...
    // other attributes
    // ...
    {   .attrKey = NvSciSyncAttrKey_WaiterRequireTimestamps,
        .value = (void*) &requireTimestamps,
        .len = sizeof(bool),
    },
    // ...
    // other attributes
    // ...
};

During reconciliation, if the signaler supports timestamp, this feature is enabled. If the waiter doesn’t require timestamp, then this feature is disabled. If the waiter requires a timestamp but the signaler doesn’t support it, then the reconciliation fails.

During the streaming phase, the waiter can obtain the timestamp value by calling NvSciSyncFenceGetTimestamp on an expired fence.