Function GetStringPropertyInfo

PresentData/TraceConsumer.cpp:33–64

template<typename T>
void GetStringPropertyInfo(TRACE_EVENT_INFO const& tei, EVENT_RECORD const& eventRecord, uint32_t index, uint32_t offset,
                           PropertyInfo* info)
{
    auto const& epi = tei.EventPropertyInfoArray[index];

    if ((epi.Flags & PropertyParamLength) != 0) {
        assert(false); // TODO: just not implemented yet
        info->size_ = 0;
    } else if (epi.length != 0) {
        info->size_ = epi.length * sizeof(T);
    } else {
        if (offset == UINT32_MAX) {
            offset = GetPropertyDataOffset(tei, eventRecord, index);
            assert(offset <= eventRecord.UserDataLength);
        }

        for (uint32_t size = 0;; size += sizeof(T)) {
            if (offset + size > eventRecord.UserDataLength) {
                // string ends at end of block, possibly ok (see note above)
                // paranoia check addressing coverity issue, likely not relevant
                assert(size >= sizeof(T));
                info->size_ = size - sizeof(T);
                break;
            }
            if (*(T const*) ((uintptr_t) eventRecord.UserData + offset + size) == (T) 0) {
                info->status_ |= PROP_STATUS_NULL_TERMINATED;
                info->size_ = size + sizeof(T);
                break;
            }
        }
    }
}

PropertyInfo GetPropertyInfo(TRACE_EVENT_INFO const& tei, EVENT_RECORD const& eventRecord, uint32_t index, uint32_t offset)
{