feat: add system metric counter in windows

include/cinatra/ylt/metric/system_metric.hpp

@@ -2,6 +2,16 @@
 #if defined(__GNUC__)
 #include <sys/resource.h>
 #include <sys/time.h>
+#endif
+
+#if defined(WIN32)
+#include <psapi.h>
+#include <tlhelp32.h>
+#include <windows.h>
+
+// Link with Psapi.lib
+#pragma comment(lib, "Psapi.lib")
+#endif
 
 #include <chrono>
 #include <cstdint>
@@ -73,6 +83,175 @@ inline int read_command_output_through_popen(std::ostream& os,
 }
 #endif
 
+#if defined(WIN32)
+typedef struct timeval {
+  long tv_sec;
+  long tv_usec;
+} timeval;
+
+inline int gettimeofday(struct timeval* tp, struct timezone* tzp) {
+  // Note: some broken versions only have 8 trailing zero's, the correct epoch
+  // has 9 trailing zero's This magic number is the number of 100 nanosecond
+  // intervals since January 1, 1601 (UTC) until 00:00:00 January 1, 1970
+  static const uint64_t epoch = ((uint64_t)116444736000000000ULL);
+
+  SYSTEMTIME system_time;
+  FILETIME file_time;
+  uint64_t time;
+
+  GetSystemTime(&system_time);
+  SystemTimeToFileTime(&system_time, &file_time);
+  time = ((uint64_t)file_time.dwLowDateTime);
+  time += ((uint64_t)file_time.dwHighDateTime) << 32;
+
+  tp->tv_sec = (long)((time - epoch) / 10000000L);
+  tp->tv_usec = (long)(system_time.wMilliseconds * 1000);
+  return 0;
+}
+
+#define RUSAGE_SELF 0
+#define RUSAGE_CHILDREN (-1)
+
+struct rusage {
+  struct timeval ru_utime; /* user time used */
+  struct timeval ru_stime; /* system time used */
+};
+
+inline int getrusage(int who, struct rusage* rusage) {
+  FILETIME starttime;
+  FILETIME exittime;
+  FILETIME kerneltime;
+  FILETIME usertime;
+  ULARGE_INTEGER li;
+
+  if (who != RUSAGE_SELF) {
+    /* Only RUSAGE_SELF is supported in this implementation for now */
+    errno = EINVAL;
+    return -1;
+  }
+
+  if (rusage == (struct rusage*)NULL) {
+    errno = EFAULT;
+    return -1;
+  }
+  memset(rusage, 0, sizeof(struct rusage));
+  if (GetProcessTimes(GetCurrentProcess(), &starttime, &exittime, &kerneltime,
+                      &usertime) == 0) {
+    return -1;
+  }
+
+  /* Convert FILETIMEs (0.1 us) to struct timeval */
+  memcpy(&li, &kerneltime, sizeof(FILETIME));
+  li.QuadPart /= 10L; /* Convert to microseconds */
+  rusage->ru_stime.tv_sec = li.QuadPart / 1000000L;
+  rusage->ru_stime.tv_usec = li.QuadPart % 1000000L;
+
+  memcpy(&li, &usertime, sizeof(FILETIME));
+  li.QuadPart /= 10L; /* Convert to microseconds */
+  rusage->ru_utime.tv_sec = li.QuadPart / 1000000L;
+  rusage->ru_utime.tv_usec = li.QuadPart % 1000000L;
+
+  return 0;
+}
+
+inline SIZE_T get_shared_memory_size(HANDLE h_process) {
+  MEMORY_BASIC_INFORMATION mbi;
+  SIZE_T base_address = 0;
+  SIZE_T shared_memory_size = 0;
+
+  while (VirtualQueryEx(h_process, (LPCVOID)base_address, &mbi, sizeof(mbi))) {
+    if (mbi.State == MEM_COMMIT) {
+      if (mbi.Type == MEM_MAPPED || mbi.Type == MEM_IMAGE) {
+        shared_memory_size += mbi.RegionSize;
+      }
+    }
+    base_address = (SIZE_T)mbi.BaseAddress + mbi.RegionSize;
+  }
+
+  return shared_memory_size;
+}
+
+inline DWORD getppid() {
+  HANDLE h_snapshot;
+  PROCESSENTRY32 pe32;
+  DWORD ppid = 0, pid = GetCurrentProcessId();
+
+  h_snapshot = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
+  try {
+    if (h_snapshot == INVALID_HANDLE_VALUE)
+      return ppid;
+
+    ZeroMemory(&pe32, sizeof(pe32));
+    pe32.dwSize = sizeof(pe32);
+    if (!Process32First(h_snapshot, &pe32))
+      return ppid;
+
+    do {
+      if (pe32.th32ProcessID == pid) {
+        ppid = pe32.th32ParentProcessID;
+        break;
+      }
+    } while (Process32Next(h_snapshot, &pe32));
+
+  } catch (...) {
+    if (h_snapshot != INVALID_HANDLE_VALUE)
+      CloseHandle(h_snapshot);
+  }
+
+  if (h_snapshot != INVALID_HANDLE_VALUE)
+    CloseHandle(h_snapshot);
+
+  return ppid;
+}
+
+inline DWORD get_thread_number(DWORD processId) {
+  DWORD thread_count = 0;
+  HANDLE snapshot_handle = CreateToolhelp32Snapshot(TH32CS_SNAPTHREAD, 0);
+
+  if (snapshot_handle == INVALID_HANDLE_VALUE) {
+    std::cerr << "Failed to create snapshot. Error code: " << GetLastError()
+              << std::endl;
+    return 0;
+  }
+
+  THREADENTRY32 threadEntry;
+  threadEntry.dwSize = sizeof(THREADENTRY32);
+
+  if (Thread32First(snapshot_handle, &threadEntry)) {
+    do {
+      if (threadEntry.th32OwnerProcessID == processId) {
+        ++thread_count;
+      }
+    } while (Thread32Next(snapshot_handle, &threadEntry));
+  }
+  else {
+    std::cerr << "Failed to retrieve thread information. Error code: "
+              << GetLastError() << std::endl;
+  }
+
+  CloseHandle(snapshot_handle);
+  return thread_count;
+}
+
+inline DWORD get_process_group(HANDLE process_handle) {
+  DWORD_PTR process_affinity_mask;
+  DWORD_PTR system_affinity_mask;
+
+  if (GetProcessAffinityMask(process_handle, &process_affinity_mask,
+                             &system_affinity_mask)) {
+    // Output the processor group information
+    // Process Affinity Mask
+    DWORD grop_id = process_affinity_mask;
+    return grop_id;
+  }
+  else {
+    std::cerr << "Failed to get process affinity mask. Error code: "
+              << GetLastError() << std::endl;
+    return 0;
+  }
+}
+#endif
+
 inline int64_t last_time_us = 0;
 inline int64_t last_sys_time_us = 0;
 inline int64_t last_user_time_us = 0;
@@ -145,7 +324,9 @@ inline void stat_memory() {
   long virtual_size = 0;
   long resident = 0;
   long share = 0;
+#if defined(__GNUC__)
   static long page_size = sysconf(_SC_PAGE_SIZE);
+#endif
 
 #if defined(__APPLE__)
   static pid_t pid = getpid();
@@ -169,9 +350,33 @@ inline void stat_memory() {
   file >> virtual_size >> resident >> share;
 #endif
 
+#if defined(WIN32)
+  DWORD current_process = GetCurrentProcessId();
+  // open process
+  HANDLE h_process = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ,
+                                 FALSE, current_process);
+  if (h_process == NULL) {
+    virtual_size = 0;
+    resident = 0;
+    share = 0;
+  }
+  PROCESS_MEMORY_COUNTERS pmc;
+  if (GetProcessMemoryInfo(h_process, &pmc, sizeof(pmc))) {
+    virtual_size = pmc.PagefileUsage;
+    resident = pmc.WorkingSetSize;
+  }
+  share = get_shared_memory_size(h_process);
+
+  CloseHandle(h_process);
+
+  process_memory_virtual->update(virtual_size);
+  process_memory_resident->update(resident);
+  process_memory_shared->update(share);
+#else
   process_memory_virtual->update(virtual_size * page_size);
   process_memory_resident->update(resident * page_size);
   process_memory_shared->update(share * page_size);
+#endif
 }
 
 struct ProcIO {
@@ -199,8 +404,7 @@ inline void stat_io() {
           "ylt_process_io_write_second");
 
   ProcIO s{};
-#if defined(__APPLE__)
-#else
+#if defined(__GUNC__)
   auto stream_file =
       std::shared_ptr<FILE>(fopen("/proc/self/io", "r"), [](FILE *ptr) {
         fclose(ptr);
@@ -217,6 +421,33 @@ inline void stat_io() {
   }
 #endif
 
+#if defined(__APPLE__)
+#endif
+
+#if defined(WIN32)
+  DWORD current_process_id = GetCurrentProcessId();
+  // open process
+  HANDLE h_process = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ,
+                                 FALSE, current_process_id);
+  if (h_process == NULL) {
+    s.rchar = 0;
+    s.wchar = 0;
+    s.syscr = 0;
+    s.syscw = 0;
+  }
+  else {
+    IO_COUNTERS io_counters = {0};
+    if (GetProcessIoCounters(h_process, &io_counters)) {
+      s.rchar = io_counters.ReadOperationCount;
+      s.wchar = io_counters.WriteOperationCount;
+      s.syscr = io_counters.ReadOperationCount;
+      s.syscw = io_counters.WriteOperationCount;
+    }
+  }
+
+  CloseHandle(h_process);
+#endif
+
   process_io_read_bytes_second->update(s.rchar);
   process_io_write_bytes_second->update(s.wchar);
   process_io_read_second->update(s.syscr);
@@ -344,6 +575,16 @@ inline void process_status() {
              &stat.flags, &stat.priority, &stat.nice) != 8) {
     return;
   }
+#elif defined(WIN32)
+  stat.pid = GetCurrentProcessId();
+  stat.ppid = getppid();
+
+  HANDLE h_process =
+      OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, stat.pid);
+  stat.priority = GetPriorityClass(h_process);
+  stat.num_threads = get_thread_number(stat.pid);
+  stat.pgrp = get_process_group(h_process);
+  CloseHandle(h_process);
 #endif
   process_uptime->inc();
   process_priority->update(stat.priority);
@@ -455,5 +696,4 @@ inline bool start_system_metric() {
 
   return true;
 }
-}  // namespace ylt::metric
-#endif
+}  // namespace ylt::metric