Module: MswinBuild::ProcessTree

Extended by:
Fiddle::Importer
Includes:
Fiddle::Win32Types
Defined in:
lib/mswin-build/process_tree.rb

Constant Summary collapse

TH32CS_SNAPPROCESS =

from tlhelp32.h

0x00000002
PROCESSENTRY32 = 
struct([
  "DWORD dwSize",
  "DWORD cntUsage",
  "DWORD th32ProcessID",
  "ULONG_PTR th32DefaultHeapID",
  "DWORD th32ModuleID",
  "DWORD cntThreads",
  "DWORD th32ParentProcessID",
  "long pcPriClassBase",
  "DWORD dwFlags",
  "TCHAR szExeFile[260]", # [MAX_PATH]
])

Class Method Summary collapse

Class Method Details

.terminate_process_tree(pid, code = 0) ⇒ Object 



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# File 'lib/mswin-build/process_tree.rb', line 49

def self.terminate_process_tree(pid, code = 0)
  begin
    terminated = 0
    h = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0)
    unless pid == Process.pid
      Process.kill(:KILL, pid)
      terminated += 1
    end
    pe32 = PROCESSENTRY32.malloc
    pe32.dwSize = PROCESSENTRY32.size
    if Process32First(h, pe32) != 0
      begin
        if pe32.th32ParentProcessID == pid
          terminated += terminate_process_tree(pe32.th32ProcessID, code)
        end
      end while Process32Next(h, pe32) != 0
    else
      raise sprintf("Cannot get processes: %d", GetLastError())
    end
  ensure
    CloseHandle(h) if h
  end

  if pid == Process.pid
    Process.kill(:KILL, pid)
    terminated += 1
  end

  terminated
end