cache the localtime result in the message

localtime uses global state AND spams allocations like cazy

src/chat_gui4.cpp

@@ -35,6 +35,16 @@ namespace Components {
 		float fade {1.f};
 	};
 
+	struct ConvertedTimeCache {
+		// calling localtime is expensive af
+		int tm_year {0};
+		int tm_yday {0};
+		int tm_mon {0};
+		int tm_mday {0};
+		int tm_hour {0};
+		int tm_min {0};
+	};
+
 } // Components
 
 static constexpr float lerp(float a, float b, float t) {
@@ -324,7 +334,8 @@ float ChatGui4::render(float time_delta) {
 						//tmp_view.use<Message::Components::Timestamp>();
 						//tmp_view.each([&](const Message3 e, Message::Components::ContactFrom& c_from, Message::Components::ContactTo& c_to, Message::Components::Timestamp ts
 						//) {
-						uint64_t prev_ts {0};
+						//uint64_t prev_ts {0};
+						Components::ConvertedTimeCache prev_time {};
 						auto tmp_view = msg_reg.view<Message::Components::Timestamp>();
 						for (auto view_it = tmp_view.rbegin(), view_last = tmp_view.rend(); view_it != view_last; view_it++) {
 							const Message3 e = *view_it;
@@ -342,15 +353,12 @@ float ChatGui4::render(float time_delta) {
 							// TODO: why?
 							ImGui::TableNextRow(0, TEXT_BASE_HEIGHT);
 
-							{ // check if date changed
-								// TODO: find defined ways of casting to time_t
-								std::time_t prev = prev_ts / 1000;
-								std::time_t next = ts.ts / 1000;
-								std::tm prev_tm = *std::localtime(&prev);
-								std::tm next_tm = *std::localtime(&next);
+							if (msg_reg.all_of<Components::ConvertedTimeCache>(e)) { // check if date changed
+								// TODO: move conversion up?
+								const auto& next_time = msg_reg.get<Components::ConvertedTimeCache>(e);
 								if (
-									prev_tm.tm_yday != next_tm.tm_yday ||
-									prev_tm.tm_year != next_tm.tm_year // making sure
+									prev_time.tm_yday != next_time.tm_yday ||
+									prev_time.tm_year != next_time.tm_year // making sure
 								) {
 									// name
 									if (ImGui::TableNextColumn()) {
@@ -359,14 +367,14 @@ float ChatGui4::render(float time_delta) {
 									// msg
 									if (ImGui::TableNextColumn()) {
 										ImGui::TextDisabled("DATE CHANGED from %d.%d.%d to %d.%d.%d",
-											1900+prev_tm.tm_year, 1+prev_tm.tm_mon, prev_tm.tm_mday,
-											1900+next_tm.tm_year, 1+next_tm.tm_mon, next_tm.tm_mday
+											1900+prev_time.tm_year, 1+prev_time.tm_mon, prev_time.tm_mday,
+											1900+next_time.tm_year, 1+next_time.tm_mon, next_time.tm_mday
 										);
 									}
 									ImGui::TableNextRow(0, TEXT_BASE_HEIGHT);
 								}
 
-								prev_ts = ts.ts;
+								prev_time = next_time;
 							}
 
 
@@ -519,12 +527,24 @@ float ChatGui4::render(float time_delta) {
 
 							// ts
 							if (ImGui::TableNextColumn()) {
-								auto time = std::chrono::system_clock::to_time_t(
-									std::chrono::time_point<std::chrono::system_clock, std::chrono::milliseconds>{std::chrono::milliseconds{ts.ts}}
-								);
-								auto localtime = std::localtime(&time);
+								if (!msg_reg.all_of<Components::ConvertedTimeCache>(e)) {
+									auto time = std::chrono::system_clock::to_time_t(
+										std::chrono::time_point<std::chrono::system_clock, std::chrono::milliseconds>{std::chrono::milliseconds{ts.ts}}
+									);
+									auto localtime = std::localtime(&time);
+									msg_reg.emplace<Components::ConvertedTimeCache>(
+										e,
+										localtime->tm_year,
+										localtime->tm_yday,
+										localtime->tm_mon,
+										localtime->tm_mday,
+										localtime->tm_hour,
+										localtime->tm_min
+									);
+								}
+								const auto& ctc = msg_reg.get<Components::ConvertedTimeCache>(e);
 
-								ImGui::Text("%.2d:%.2d", localtime->tm_hour, localtime->tm_min);
+								ImGui::Text("%.2d:%.2d", ctc.tm_hour, ctc.tm_min);
 							}
 
 							// extra

src/main_screen.cpp

@@ -376,7 +376,7 @@ Screen* MainScreen::render(float time_delta, bool&) {
 }
 
 Screen* MainScreen::tick(float time_delta, bool& quit) {
-	quit = !tc.iterate(); // compute
+	quit = !tc.iterate(time_delta); // compute
 
 	tcm.iterate(time_delta); // compute
 

src/tox_client.cpp

@@ -1,5 +1,4 @@
 #include "./tox_client.hpp"
-#include "toxcore/tox.h"
 
 // meh, change this
 #include <exception>
@@ -121,10 +120,13 @@ ToxClient::ToxClient(std::string_view save_path, std::string_view save_password)
 }
 
 ToxClient::~ToxClient(void) {
+	if (_tox_profile_dirty) {
+		saveToxProfile();
+	}
 	tox_kill(_tox);
 }
 
-bool ToxClient::iterate(void) {
+bool ToxClient::iterate(float time_delta) {
 	Tox_Err_Events_Iterate err_e_it = TOX_ERR_EVENTS_ITERATE_OK;
 	auto* events = tox_events_iterate(_tox, false, &err_e_it);
 	if (err_e_it == TOX_ERR_EVENTS_ITERATE_OK && events != nullptr) {
@@ -136,7 +138,8 @@ bool ToxClient::iterate(void) {
 
 	tox_events_free(events);
 
-	if (_tox_profile_dirty) {
+	_save_heat -= time_delta;
+	if (_tox_profile_dirty && _save_heat <= 0.f) {
 		saveToxProfile();
 	}
 
@@ -180,5 +183,6 @@ void ToxClient::saveToxProfile(void) {
 	}
 
 	_tox_profile_dirty = false;
+	_save_heat = 10.f;
 }
 

src/tox_client.hpp

@@ -22,6 +22,7 @@ class ToxClient : public ToxDefaultImpl, public ToxEventProviderBase {
 		std::string _tox_profile_path;
 		std::string _tox_profile_password;
 		bool _tox_profile_dirty {true}; // set in callbacks
+		float _save_heat {0.f};
 
 	public:
 		//ToxClient(/*const CommandLine& cl*/);
@@ -34,7 +35,7 @@ class ToxClient : public ToxDefaultImpl, public ToxEventProviderBase {
 		void setDirty(void) { _tox_profile_dirty = true; }
 
 		// returns false when we shoul stop the program
-		bool iterate(void);
+		bool iterate(float time_delta);
 		void stop(void); // let it know it should exit
 
 		void setToxProfilePath(const std::string& new_path) { _tox_profile_path = new_path; }