Function LookupFrameId

PresentData/Debug.cpp:333–361

}

uint32_t LookupFrameId(
    PMTraceConsumer* pmConsumer,
    uint64_t CompositionSurfaceLuid,
    uint64_t PresentCount,
    uint64_t BindId)
{
    // pmConsumer can complete presents before they've seen all of
    // their TokenStateChanged_Info events, so we keep a copy of the
    // token->present id map here simply so we can print what present
    // the event refers to.
    static std::unordered_map<
        PMTraceConsumer::Win32KPresentHistoryToken,
        uint32_t,
        PMTraceConsumer::Win32KPresentHistoryTokenHash> tokenToIdMap;

    PMTraceConsumer::Win32KPresentHistoryToken key(CompositionSurfaceLuid, PresentCount, BindId);
    auto ii = pmConsumer->mPresentByWin32KPresentHistoryToken.find(key);
    if (ii != pmConsumer->mPresentByWin32KPresentHistoryToken.end()) {
        tokenToIdMap[key] = ii->second->FrameId;
        return ii->second->FrameId;
    }

    auto jj = tokenToIdMap.find(key);
    if (jj != tokenToIdMap.end()) {
        return jj->second;
    }

    return 0;
}

}