Class: ChildProcess::Windows::Handle
- Inherits:
-
Object
- Object
- ChildProcess::Windows::Handle
- Defined in:
- lib/childprocess/windows/handle.rb
Instance Attribute Summary collapse
-
#pointer ⇒ Object
readonly
Returns the value of attribute pointer.
Class Method Summary collapse
Instance Method Summary collapse
- #close ⇒ Object
- #exit_code ⇒ Object
-
#initialize(pointer, pid) ⇒ Handle
constructor
A new instance of Handle.
- #send(signal) ⇒ Object
- #wait(milliseconds = nil) ⇒ Object
Constructor Details
#initialize(pointer, pid) ⇒ Handle
Returns a new instance of Handle.
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# File 'lib/childprocess/windows/handle.rb', line 28 def initialize(pointer, pid) unless pointer.kind_of?(FFI::Pointer) raise TypeError, "invalid handle: #{pointer.inspect}" end if pointer.null? raise ArgumentError, "handle is null: #{pointer.inspect}" end @pid = pid @pointer = pointer @closed = false end |
Instance Attribute Details
#pointer ⇒ Object (readonly)
Returns the value of attribute pointer.
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# File 'lib/childprocess/windows/handle.rb', line 26 def pointer @pointer end |
Class Method Details
.open(pid, access = PROCESS_ALL_ACCESS) ⇒ Object
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# File 'lib/childprocess/windows/handle.rb', line 8 def open(pid, access = PROCESS_ALL_ACCESS) handle = Lib.open_process(access, false, pid) if handle.null? raise Error, Lib. end h = new(handle, pid) return h unless block_given? begin yield h ensure h.close end end |
Instance Method Details
#close ⇒ Object
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# File 'lib/childprocess/windows/handle.rb', line 78 def close return if @closed Lib.close_handle(@pointer) @closed = true end |
#exit_code ⇒ Object
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# File 'lib/childprocess/windows/handle.rb', line 42 def exit_code code_pointer = FFI::MemoryPointer.new :ulong ok = Lib.get_exit_code(@pointer, code_pointer) if ok code_pointer.get_ulong(0) else close raise Error, Lib. end end |
#send(signal) ⇒ Object
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# File 'lib/childprocess/windows/handle.rb', line 54 def send(signal) case signal when 0 exit_code == PROCESS_STILL_ALIVE when WIN_SIGINT Lib.generate_console_ctrl_event(CTRL_C_EVENT, @pid) when WIN_SIGBREAK Lib.generate_console_ctrl_event(CTRL_BREAK_EVENT, @pid) when WIN_SIGKILL ok = Lib.terminate_process(@pointer, @pid) Lib.check_error ok else thread_id = FFI::MemoryPointer.new(:ulong) module_handle = Lib.get_module_handle("kernel32") proc_address = Lib.get_proc_address(module_handle, "ExitProcess") thread = Lib.create_remote_thread(@pointer, 0, 0, proc_address, 0, 0, thread_id) check_error thread Lib.wait_for_single_object(thread, 5) true end end |