Worker CPU thread for linux working

CMakeLists.txt

@@ -15,6 +15,7 @@ set(LinuxDep ${Platform}/linux)
 
 set(Include ./include)
 
+set(THREADS_PREFER_PTHREAD_FLAG ON)
 find_package(Threads REQUIRED)
 
 include_directories(${Build}/ ${Include})
@@ -42,4 +43,6 @@ add_executable(${Build}
     ${PlatformDepSource}
 )
 
+target_link_libraries(${Build} ${CMAKE_THREAD_LIBS_INIT})
+target_link_libraries(${Build} pthread)
 target_link_libraries(${Build} Threads::Threads)

include/cpu.h

@@ -2,20 +2,22 @@
 
 #include <atomic>
 #include <thread>
+#include <mutex>
 
 class CPU {
 public:
     CPU();
     
-    std::atomic<int> CPU_PREVIOUS_IDLE;
-    std::atomic<int> CPU_PREVIOUS_TOTAL;
-    std::atomic<int> CPU_IDLE;
-    std::atomic<int> CPU_TOTAL;
+    std::mutex CPU_Mutex;
+    int CPU_PREVIOUS_IDLE;
+    int CPU_PREVIOUS_TOTAL;
+    int CPU_IDLE;
+    int CPU_TOTAL;
 
-    std::atomic<int> UPDATE_INTERVAL; // ms
+    int UPDATE_INTERVAL; // s
 
     void START_CPU_POLLING();
-    static void CPU_POLL();
+    static void CPU_POLL(CPU* cpu);
     void END_CPU_POLLING();
 
     double CPU_PERCENT();
@@ -23,16 +25,7 @@ public:
     virtual ~CPU(); 
 private:
     std::thread* m_pollThread;
-    std::atomic<bool> m_isPolling;
+    bool m_isPolling;
 };
 
-static CPU* instance;
-static CPU* GetCPUInstance() {
-    if (instance == (void*)0) {
-        CPU cpu;
-        instance = &cpu;
-        return instance;
-    }
-    return instance;
-}
-
+static CPU* CPU_Instance;

platform/linux/monitoring/cpu.cpp

@@ -9,26 +9,33 @@
 CPU::CPU() {
     this->UPDATE_INTERVAL = 1000;
     this->m_isPolling = false;
+    std::cout << "CPU Class Instantated" << std::endl;
 }
 
 void CPU::START_CPU_POLLING() {
     if (this->m_isPolling) {
         return;
     }
-    std::thread t(&CPU::CPU_POLL);
-    this->m_pollThread = &t; 
     this->m_isPolling = true;
+    std::thread* t = new std::thread(&CPU::CPU_POLL, this);
+    this->m_pollThread = t; 
     std::cout << "Worker CPU thread started" << std::endl;
 }
 
-void CPU::CPU_POLL() {
-    CPU* cpu = GetCPUInstance();
-    while (cpu->m_isPolling) {
+void CPU::CPU_POLL(CPU* cpu) {
+    std::cout << "From CPU Thread Start" << std::endl;
+    while (true) {
+        cpu->CPU_Mutex.lock();
+        if (!cpu->m_isPolling) {
+            cpu->CPU_Mutex.unlock();
+            return;
+        }
         cpu->CPU_PREVIOUS_IDLE++;
         cpu->CPU_PREVIOUS_TOTAL++;
         cpu->CPU_IDLE++;
         cpu->CPU_TOTAL++;
-        usleep(cpu->UPDATE_INTERVAL);
+        cpu->CPU_Mutex.unlock();
+        sleep(1);
     }
 }
 
@@ -37,15 +44,19 @@ void CPU::END_CPU_POLLING() {
         return;
     }
     this->m_isPolling = false;
-    usleep(this->UPDATE_INTERVAL + 5);
     m_pollThread->join();
     delete m_pollThread;
 }
 
 double CPU::CPU_PERCENT() {
+    this->CPU_Mutex.lock();
+
+    this->CPU_Mutex.unlock();
     return (double)this->CPU_TOTAL;
 }
 
 CPU::~CPU() {
-    CPU::m_pollThread->~thread();
+    this->m_isPolling = false;
+    m_pollThread->join();
+    delete m_pollThread;
 }

src/main.cpp

@@ -1,12 +1,17 @@
 #include <iostream>
 #include <cpu.h>
+#include <unistd.h>
 
 int main(int argc, char** argv) {
-    CPU* cpu = GetCPUInstance();
+    CPU* cpu = new CPU();
+    CPU_Instance = cpu;
 
     cpu->START_CPU_POLLING();
 
+    usleep(1000000);
     while(1) {
         std::cout << cpu->CPU_PERCENT() << std::endl;
+
+        sleep(1);
     }
 }