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update changed_ui_items to be faster
This commit is contained in:
sani7
2026-04-06 22:25:28 +02:00
parent 514b3e402a
commit defa1f904b
1 changed files with 16 additions and 34 deletions
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server/simulators.cpp
+16 -34
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@@ -202,50 +202,32 @@ Simulator_base *Simulators::invoke_active_simulator()
json Simulators::changed_UI_items()
{
std::lock_guard<std::mutex> lock(m_mutex);
if (this->m_simulators.empty())
{
if (this->m_simulators.empty() || this->m_current_simulator.empty())
return "{}"_json;
}
if (this->m_current_simulator.empty())
{
return "{}"_json;
}
json after = this->m_simulators.at(m_current_simulator)->get_UI_items();
// Fast path: nothing at all changed
if (after == m_before)
return "{}"_json;
json changed;
changed["event"]["type"] = "ui_changed";
json diff = json::diff(m_before, after);
const auto& ui_items = after["UI_items"];
const auto& prev_ui_items = m_before["UI_items"]; // may be null on first call
if (diff.empty())
const size_t count = ui_items.size();
for (size_t i = 0; i < count; ++i)
{
return "{}"_json;
}
// diff to ui items list
// get index out of each item in diff /UI_items/0/**
// but the index can be the same for multiple items
// Then push the ui_item at that index to the changed json
std::unordered_set<size_t> addedIndices;
try
{
for (auto &item : diff)
// If item is new or any field changed -> send full current item
if (i >= prev_ui_items.size() || ui_items[i] != prev_ui_items[i])
{
std::string path = item["path"];
size_t index = std::stoul(path.substr(10, path.find("/", 10) - 10));
if (addedIndices.find(index) != addedIndices.end())
continue;
changed["event"]["UI_items"].push_back(after["UI_items"][index]);
addedIndices.insert(index);
changed["event"]["UI_items"].push_back(ui_items[i]);
}
}
catch (const std::exception &e)
{
SPDLOG_ERROR(e.what());
}
m_before = after;
m_before = std::move(after);
return changed;
}
}