From e628f078964561fe84b30ef9a7dfa2d79701494c Mon Sep 17 00:00:00 2001
From: Drath <drathvader@wp.pl>
Date: Sat, 13 Sep 2025 23:55:30 +0200
Subject: [PATCH] more c++ like naming, not shared pointed, batch thread spin,
 assorted fuckery

---
 main.cpp | 57 ++++++++++++++++++++++++++++++++------------------------
 1 file changed, 33 insertions(+), 24 deletions(-)

diff --git a/main.cpp b/main.cpp
index 68915bb..4cd6a7c 100644
--- a/main.cpp
+++ b/main.cpp
@@ -3,14 +3,14 @@
 #include <chrono>
 #include <csignal>
 #include <cstdint>
-#include <cstdlib>
-#include <memory>
+#include <functional>
 #include <mutex>
 #include <print>
 #include <semaphore>
 #include <stop_token>
 #include <string>
 #include <thread>
+#include <vector>
 //
 #include <LCDDisplay.hpp>
 #include <cpu.hpp>
@@ -27,7 +27,7 @@
 std::binary_semaphore sDisp{0};  // halts display func until we have sensor data
 std::binary_semaphore sMain{0};  // halts the main thread until SIGINT
 
-struct sensors_t {
+struct Sensors {
     std::array<std::string, 2> td;
     std::string loadavg;
     mem_usage_t ram;
@@ -40,12 +40,12 @@ struct sensors_t {
 
 void sighandler(int s) {
     std::println("[Signal] got SIGINT/SIGTERM, exiting...");
-    sDisp.release();
     sMain.release();
+    sDisp.release();
 }
 
-void hass_thread(std::stop_token st, std::shared_ptr<sensors_t> s) {
-    std::println("[Thread] Starting hass_thread, pid {}", gettid());
+void hassThread(std::stop_token st, Sensors* s) {
+    // std::println("[Thread] Starting hass_thread, pid {}", gettid());
     HomeAssistant pc_power("home.drath.win", "sensor.gniazdko_komputer_moc");
 
     pc_power.connect();
@@ -56,12 +56,12 @@ void hass_thread(std::stop_token st, std::shared_ptr<sensors_t> s) {
             std::lock_guard<std::mutex> lock(s->mtx);
             s->hass_state = pc_power.state;
         }
-        std::this_thread::sleep_for(std::chrono::milliseconds(50));
+        std::this_thread::sleep_for(std::chrono::milliseconds(10));
     }
 }
 
-void sensors_thread(std::stop_token st, std::shared_ptr<sensors_t> s) {
-    std::println("[Thread] Starting sensors_thread, pid {}, poll interval {} ms", gettid(), LCD_INTERVAL_MS);
+void sensorsThread(std::stop_token st, Sensors* s) {
+    // std::println("[Thread] Starting sensors_thread, pid {}, poll interval {} ms", gettid(), LCD_INTERVAL_MS);
     cpu_hwmon_t cpu_hwmon = detectCpuHwmon("0000:00:18.3");
     std::string gpu_hwmon = detectGpuHwmon("0000:08:00.0");
 
@@ -74,7 +74,7 @@ void sensors_thread(std::stop_token st, std::shared_ptr<sensors_t> s) {
             s->ram = getRam();
             s->home = getDisk("/home/drath");
             s->cpu = getCpu(cpu_hwmon);
-            s->gpu = getGpu(gpu_hwmon);
+            s->gpu = getGpu(gpu_hwmon, false);
         }
 
         // std::println("[Sensors] took {} microseconds", std::chrono::duration_cast<std::chrono::microseconds>(std::chrono::steady_clock::now() - start).count());
@@ -83,8 +83,8 @@ void sensors_thread(std::stop_token st, std::shared_ptr<sensors_t> s) {
     }
 }
 
-void display_thread(std::stop_token st, std::shared_ptr<sensors_t> s) {
-    std::println("[Thread] Starting display_thread, pid {}", gettid());
+void displayThread(std::stop_token st, Sensors* s) {
+    // std::println("[Thread] Starting display_thread, pid {}", gettid());
     LCDDisplay lcd(LCD_PORT);
 
     lcd.setContrast(LCD_CONTRAST);
@@ -125,26 +125,35 @@ void display_thread(std::stop_token st, std::shared_ptr<sensors_t> s) {
 
     lcd.clearBuf();
     lcd.writeBuf(1, 10, "linuxSmartie closed");
-    // lcd.flushBuf();
+    lcd.flushBuf();
 }
 
 int main(int argc, char* argv[]) {
     std::signal(SIGINT, sighandler);
     std::signal(SIGTERM, sighandler);
-    std::println("[Thread] Main thread, pid {}", gettid());
+    // std::println("[Thread] Main thread, pid {}", gettid());
 
-    std::shared_ptr<sensors_t> pSensors = std::make_shared<sensors_t>();
+    // not worth using smart pointer, we dont need to fw pointer ownership
+    Sensors* pSensors = new Sensors;
+    std::println("sensors: {}", sizeof(Sensors));
 
-    std::jthread disp(display_thread, pSensors);
-    std::jthread hass(hass_thread, pSensors);
-    std::jthread sens(sensors_thread, pSensors);
+    std::vector<std::function<void(std::stop_token st, Sensors * s)>> funcs = {displayThread, hassThread, sensorsThread};
 
-    // halt main thread until we trigger sighandler
-    sMain.acquire();
+    /* wtf is this?
+        this spins up funcs as threads and halts until sMain semaphore is released in sighandler
+        its scoped because when sMain is released, program waits until all the threads join back before leaving the scope
+        threads object has to be inside the scope too because destruction of std::jthread is what actually makes threads join.
+    */
 
-    // main thread resumed, tell workers to stop
-    hass.request_stop();
-    sens.request_stop();
-    disp.request_stop();
+    {
+        std::vector<std::jthread> threads;
+        for (auto& f : funcs)
+            threads.emplace_back(f, pSensors);
+
+        sMain.acquire();
+    }
+
+    delete pSensors;
+    std::println("Main thread exiting");
     return 0;
 }