flutter::ThreadSnapshot Class Reference

Public Member Functions
	ThreadSnapshot ()
	~ThreadSnapshot ()
std::optional< THREADENTRY32 >	GetFirstThread ()
bool	GetNextThread (THREADENTRY32 &thread)

Detailed Description

Definition at line 107 of file windows_lifecycle_manager.cc.

Constructor & Destructor Documentation

ThreadSnapshot()

flutter::ThreadSnapshot::ThreadSnapshot ( )

inline

Definition at line 109 of file windows_lifecycle_manager.cc.

                   {
    thread_snapshot_ = ::CreateToolhelp32Snapshot(TH32CS_SNAPTHREAD, 0);
  }

~ThreadSnapshot()

flutter::ThreadSnapshot::~ThreadSnapshot ( )

inline

Definition at line 112 of file windows_lifecycle_manager.cc.

                    {
    if (thread_snapshot_ != INVALID_HANDLE_VALUE) {
      ::CloseHandle(thread_snapshot_);
    }
  }

References INVALID_HANDLE_VALUE.

Member Function Documentation

GetFirstThread()

std::optional< THREADENTRY32 > flutter::ThreadSnapshot::GetFirstThread ( )

inline

Definition at line 118 of file windows_lifecycle_manager.cc.

                                              {
    if (thread_snapshot_ == INVALID_HANDLE_VALUE) {
      FML_LOG(ERROR) << "Failed to get thread snapshot";
      return std::nullopt;
    }
    THREADENTRY32 thread;
    thread.dwSize = sizeof(thread);
    if (!::Thread32First(thread_snapshot_, &thread)) {
      DWORD error_num = ::GetLastError();
      char msg[256];
      ::FormatMessageA(
          FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, NULL,
          error_num, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), msg, 256,
          nullptr);
      FML_LOG(ERROR) << "Failed to get thread(" << error_num << "): " << msg;
      return std::nullopt;
    }
    return thread;
  }

References FML_LOG, GetLastError(), and INVALID_HANDLE_VALUE.

Referenced by flutter::WindowsLifecycleManager::IsLastWindowOfProcess().

GetNextThread()

bool flutter::ThreadSnapshot::GetNextThread ( THREADENTRY32 &  thread )

inline

Definition at line 138 of file windows_lifecycle_manager.cc.

                                            {
    if (thread_snapshot_ == INVALID_HANDLE_VALUE) {
      return false;
    }
    return ::Thread32Next(thread_snapshot_, &thread);
  }

References INVALID_HANDLE_VALUE.

Referenced by flutter::WindowsLifecycleManager::IsLastWindowOfProcess().

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The documentation for this class was generated from the following file:

• shell/platform/windows/windows_lifecycle_manager.cc