fix: add cpu usage

engine/cli/commands/hardware_list_cmd.cc

@@ -41,8 +41,8 @@ bool HardwareListCmd::Exec(const std::string& host, int port,
   if (!ho.has_value() || ho.value().show_cpu) {
     std::cout << "CPU Information:" << std::endl;
     Table table;
-    std::vector<std::string> column_headers{"#", "Arch", "Cores", "Model",
-                                            "Instructions"};
+    std::vector<std::string> column_headers{"#",     "Arch",  "Cores",
+                                            "Model", "Usage", "Instructions"};
 
     Row_t header{column_headers.begin(), column_headers.end()};
     table.add_row(header);
@@ -52,6 +52,7 @@ bool HardwareListCmd::Exec(const std::string& host, int port,
     row.emplace_back(cpu.arch);
     row.emplace_back(std::to_string(cpu.cores));
     row.emplace_back(cpu.model);
+    row.emplace_back(std::to_string(cpu.usage));
     std::string insts;
     for (auto const& i : cpu.instructions) {
       insts += i + " ";

engine/common/hardware_common.h

@@ -1,9 +1,9 @@
 #pragma once
+#include <assert.h>
 #include <json/json.h>
 #include <string>
 #include <variant>
 #include <vector>
-#include <assert.h>
 
 namespace cortex::hw {
 
@@ -26,6 +26,7 @@ struct CPU {
   int cores;
   std::string arch;
   std::string model;
+  float usage;
   std::vector<std::string> instructions;
 };
 
@@ -34,6 +35,7 @@ inline Json::Value ToJson(const CPU& cpu) {
   res["arch"] = cpu.arch;
   res["cores"] = cpu.cores;
   res["model"] = cpu.model;
+  res["usage"] = cpu.usage;
   Json::Value insts(Json::arrayValue);
   for (auto const& i : cpu.instructions) {
     insts.append(i);
@@ -47,11 +49,16 @@ inline CPU FromJson(const Json::Value& root) {
   int cores = root["cores"].asInt();
   std::string arch = root["arch"].asString();
   std::string model = root["model"].asString();
+  float usage = root["usage"].asFloat();
   std::vector<std::string> insts;
   for (auto const& i : root["instructions"]) {
     insts.emplace_back(i.asString());
   }
-  return {.cores = cores, .arch = arch, .model = model, .instructions = insts};
+  return {.cores = cores,
+          .arch = arch,
+          .model = model,
+          .usage = usage,
+          .instructions = insts};
 }
 }  // namespace cpu
 
@@ -143,7 +150,6 @@ inline OS FromJson(const Json::Value& root) {
 }
 }  // namespace os
 
-
 struct PowerInfo {
   std::string charging_status;
   int battery_life;
@@ -166,7 +172,6 @@ inline PowerInfo FromJson(const Json::Value& root) {
 }
 }  // namespace power
 
-
 namespace {
 int64_t ByteToMiB(int64_t b) {
   return b / 1024 / 1024;
@@ -215,4 +220,4 @@ inline StorageInfo FromJson(const Json::Value& root) {
           .available = root["available"].asInt64()};
 }
 }  // namespace storage
-}
+}  // namespace cortex::hw

engine/utils/hardware/cpu_info.h

@@ -5,6 +5,7 @@
 #include <string_view>
 #include <vector>
 #include "common/hardware_common.h"
+#include "cpu_usage.h"
 #include "hwinfo/hwinfo.h"
 #include "utils/cpuid/cpu_info.h"
 
@@ -15,9 +16,12 @@ inline CPU GetCPUInfo() {
     return CPU{};
   auto cpu = res[0];
   cortex::cpuid::CpuInfo inst;
+  float usage = GetCPUUsage();
+  // float usage = 0;
   return CPU{.cores = cpu.numPhysicalCores(),
              .arch = std::string(GetArch()),
              .model = cpu.modelName(),
+             .usage = usage,
              .instructions = inst.instructions()};
 }
 }  // namespace cortex::hw

engine/utils/hardware/cpu_usage.h

@@ -0,0 +1,162 @@
+#pragma once
+#include <chrono>
+#include <iostream>
+#include <sstream>
+#include <thread>
+#include <vector>
+
+#ifdef _WIN32
+#include <pdh.h>
+#include <windows.h>
+#pragma comment(lib, "pdh.lib")
+#elif defined(__APPLE__) || defined(__MACH__)
+#include <mach/mach_host.h>
+#include <mach/mach_init.h>
+#else
+#include <unistd.h>
+#include <fstream>
+#endif
+#include "utils/logging_utils.h"
+
+namespace cortex::hw {
+inline double GetCPUUsage() {
+#if defined(_WIN32)
+  unsigned long long previous_total_ticks = 0;
+  unsigned long long previous_idle_ticks = 0;
+
+  auto calculate_cpu_load = [&](unsigned long long idle_ticks,
+                                unsigned long long total_ticks) {
+    unsigned long long total_ticks_since_last_time =
+        total_ticks - previous_total_ticks;
+    unsigned long long idle_ticks_since_last_time =
+        idle_ticks - previous_idle_ticks;
+
+    float ret = 1.0f - ((total_ticks_since_last_time > 0)
+                            ? ((float)idle_ticks_since_last_time) /
+                                  total_ticks_since_last_time
+                            : 0);
+
+    previous_total_ticks = total_ticks;
+    previous_idle_ticks = idle_ticks;
+    return ret * 100;
+  };
+
+  auto file_time_to_int64 = [](const FILETIME& ft) {
+    return (((unsigned long long)(ft.dwHighDateTime)) << 32) |
+           ((unsigned long long)ft.dwLowDateTime);
+  };
+
+  FILETIME idle_time, kernel_time, user_time;
+  float res = 0;
+  constexpr const int kCount = 100;
+  for (int i = 0; i < kCount; i++) {
+    res += GetSystemTimes(&idle_time, &kernel_time, &user_time)
+               ? calculate_cpu_load(file_time_to_int64(idle_time),
+                                    file_time_to_int64(kernel_time) +
+                                        file_time_to_int64(user_time))
+               : -1.0f;
+    std::this_thread::sleep_for(std::chrono::milliseconds(1));
+  }
+  return res < 0 ? -1.0f : res / kCount;
+
+#elif defined(__APPLE__) || defined(__MACH__)
+  // macOS implementation
+  host_cpu_load_info_data_t cpu_info;
+  mach_msg_type_number_t count = HOST_CPU_LOAD_INFO_COUNT;
+
+  static unsigned long long previous_total_ticks = 0;
+  static unsigned long long previous_idle_ticks = 0;
+
+  if (host_statistics(mach_host_self(), HOST_CPU_LOAD_INFO,
+                      (host_info_t)&cpu_info, &count) == KERN_SUCCESS) {
+    unsigned long long total_ticks = 0;
+    for (int i = 0; i < CPU_STATE_MAX; i++) {
+      total_ticks += cpu_info.cpu_ticks[i];
+    }
+
+    unsigned long long idle_ticks = cpu_info.cpu_ticks[CPU_STATE_IDLE];
+
+    unsigned long long total_ticks_since_last_time =
+        total_ticks - previous_total_ticks;
+    unsigned long long idle_ticks_since_last_time =
+        idle_ticks - previous_idle_ticks;
+
+    double cpu_usage = 1.0f - ((double)idle_ticks_since_last_time /
+                               total_ticks_since_last_time);
+
+    previous_total_ticks = total_ticks;
+    previous_idle_ticks = idle_ticks;
+
+    return cpu_usage * 100.0;
+  }
+  return -1.0;
+
+#else
+  // Linux implementation
+  std::vector<unsigned long long> last_total_user, last_total_user_low,
+      last_total_sys, last_total_idle;
+
+  std::vector<unsigned long long> total_user, total_user_low, total_sys,
+      total_idle;
+
+  std::ifstream stat_file("/proc/stat");
+  if (stat_file.is_open()) {
+    std::string line;
+    int cpu_count = 0;
+    double total_cpu_percentage = 0.0;
+
+    while (std::getline(stat_file, line)) {
+      if (line.substr(0, 3) != "cpu")
+        break;  // We only want lines that start with "cpu"
+
+      cpu_count++;
+      std::vector<unsigned long long> values;
+      std::istringstream iss(line);
+      std::string cpu;
+      iss >> cpu;
+      unsigned long long value;
+      while (iss >> value) {
+        values.push_back(value);
+      }
+
+      if (values.size() < 4)
+        continue;
+
+      total_user.push_back(values[0]);
+      total_user_low.push_back(values[1]);
+      total_sys.push_back(values[2]);
+      total_idle.push_back(values[3]);
+
+      if (last_total_user.size() < cpu_count) {
+        last_total_user.push_back(0);
+        last_total_user_low.push_back(0);
+        last_total_sys.push_back(0);
+        last_total_idle.push_back(0);
+      }
+
+      unsigned long long total =
+          (total_user[cpu_count - 1] - last_total_user[cpu_count - 1]) +
+          (total_user_low[cpu_count - 1] - last_total_user_low[cpu_count - 1]) +
+          (total_sys[cpu_count - 1] - last_total_sys[cpu_count - 1]);
+      double percent = total;
+      total += (total_idle[cpu_count - 1] - last_total_idle[cpu_count - 1]);
+      percent /= total;
+      percent *= 100;
+
+      total_cpu_percentage += percent;
+
+      last_total_user[cpu_count - 1] = total_user[cpu_count - 1];
+      last_total_user_low[cpu_count - 1] = total_user_low[cpu_count - 1];
+      last_total_sys[cpu_count - 1] = total_sys[cpu_count - 1];
+      last_total_idle[cpu_count - 1] = total_idle[cpu_count - 1];
+    }
+    stat_file.close();
+
+    if (cpu_count > 0) {
+      return total_cpu_percentage / cpu_count;  // Return average CPU usage
+    }
+  }
+  return -1.0;
+#endif
+}
+}  // namespace cortex::hw