def WSASend(self, handle, bufobj, flags):
handle = _int2handle(handle)
if self.type != OverlappedType.TYPE_NONE:
raise _winapi._WinError()
self.write_buffer = bufobj
self.type = OverlappedType.TYPE_WRITE
self.handle = handle
wsabuff = _ffi.new("WSABUF[1]")
wsabuff[0].len = len(bufobj)
wsabuff[0].buf = _ffi.new("CHAR[]", bufobj)
nwritten = _ffi.new("LPDWORD")
result = _winsock2.WSASend(handle, wsabuff, _int2dword(1), nwritten,
flags, self.overlapped, _ffi.NULL)
if result == SOCKET_ERROR:
self.error = _kernel32.GetLastError()
else:
self.error = _winapi.ERROR_SUCCESS
if self.error in [_winapi.ERROR_SUCCESS, _winapi.ERROR_IO_PENDING]:
return None
else:
self.type = OverlappedType.TYPE_NOT_STARTED
SetFromWindowsErr(self.error)
def CreateProcess(name, command_line, process_attr, thread_attr, inherit,
flags, env, start_dir, startup_info):
si = _ffi.new("STARTUPINFO *")
if startup_info is not None:
si.dwFlags = startup_info.dwFlags
si.wShowWindow = startup_info.wShowWindow
# CPython: these three handles are expected to be _handle objects
if startup_info.hStdInput:
si.hStdInput = startup_info.hStdInput.c_handle
if startup_info.hStdOutput:
si.hStdOutput = startup_info.hStdOutput.c_handle
if startup_info.hStdError:
si.hStdError = startup_info.hStdError.c_handle
pi = _ffi.new("PROCESS_INFORMATION *")
if env is not None:
envbuf = ""
for k, v in env.iteritems():
envbuf += "%s=%s\0" % (k, v)
envbuf += '\0'
else:
envbuf = _ffi.NULL
res = _kernel32.CreateProcessA(_z(name), _z(command_line), _ffi.NULL,
_ffi.NULL, inherit, flags, envbuf,
_z(start_dir), si, pi)
if not res:
raise _WinError()
return (_handle(pi.hProcess), _handle(pi.hThread), pi.dwProcessId,
pi.dwThreadId)
def WriteFile(handle, buffer, overlapped=False):
written = _ffi.new("DWORD*")
use_overlapped = overlapped
overlapped = None
err = 0
if use_overlapped:
overlapped = Overlapped(handle)
if not overlapped:
return _ffi.NULL
overlapped.writebuffer = bytes(buffer)
buf = overlapped.writebuffer
ret = _kernel32.WriteFile(_int2handle(handle), buf , len(buf), written, overlapped.overlapped)
if not ret:
err = _kernel32.GetLastError()
if err == ERROR_IO_PENDING:
overlapped.pending = 1
else:
return_WinError(IOError)
return overlapped, err
else:
buf = _ffi.new("CHAR[]", bytes(buffer))
ret = _kernel32.WriteFile(_int2handle(handle), buf , len(buf), written, _ffi.NULL)
if not ret:
raise_WinError(IOError)
return written[0], err
def ReadFile(handle, size, overlapped):
nread = _ffi.new("DWORD*")
use_overlapped = overlapped
buf = _ffi.new("CHAR[]", size)
if not buf:
raise_WinError(IOError)
err = 0
if use_overlapped:
overlapped = Overlapped(handle)
overlapped.readbuffer = buf
ret = _kernel32.ReadFile(_int2handle(handle), buf, size, nread,
overlapped.overlapped)
if not ret:
err = _kernel32.GetLastError()
if err == ERROR_IO_PENDING:
overlapped.pending = 1
elif err != ERROR_MORE_DATA:
raise_WinError(IOError)
return overlapped, err
else:
ret = _kernel32.ReadFile(_int2handle(handle), buf, size, nread,
_ffi.NULL)
if not ret:
err = _kernel32.GetLastError()
if err != ERROR_MORE_DATA:
raise_WinError(IOError)
return nread[0], err
def AcceptEx(self, listensocket, acceptsocket):
listensocket = _int2handle(listensocket)
acceptsocket = _int2handle(acceptsocket)
bytesreceived = _ffi.new("DWORD[1]")
if self.type != OverlappedType.TYPE_NONE:
_winapi.raise_WinError()
size = _ffi.sizeof("struct sockaddr_in6") + 16
buf = _ffi.new("CHAR[]", size * 2)
if not buf:
return None
self.type = OverlappedType.TYPE_ACCEPT
self.handle = listensocket
self.read_buffer = buf
res = _accept_ex[0](listensocket, acceptsocket, buf, \
0, size, size, bytesreceived, self.overlapped)
if res:
self.error = _winapi.ERROR_SUCCESS
else:
self.error = _kernel32.GetLastError()
if self.error == _winapi.ERROR_SUCCESS or self.error == _winapi.ERROR_IO_PENDING:
return None
else:
self.type = OverlappedType.TYPE_NOT_STARTED
RaiseFromWindowsErr(0)
def WSASend(self, handle, bufobj, flags):
""" Send bufobj using handle. Raises on error. Returns None
"""
handle = _int2handle(handle)
if self.type != OverlappedType.TYPE_NONE:
_winapi.raise_WinError()
self.write_buffer = bytes(bufobj)
self.type = OverlappedType.TYPE_WRITE
self.handle = handle
wsabuff = _ffi.new("WSABUF[1]")
lgt = len(self.write_buffer)
wsabuff[0].len = lgt
wsabuff[0].buf = _ffi.new('CHAR[]', self.write_buffer)
nwritten = _ffi.new("LPDWORD")
result = _winsock2.WSASend(handle, wsabuff, _int2dword(1), nwritten,
flags, self.overlapped, _ffi.NULL)
if result == SOCKET_ERROR:
self.error = _kernel32.GetLastError()
else:
self.error = _winapi.ERROR_SUCCESS
if self.error not in [_winapi.ERROR_SUCCESS, _winapi.ERROR_IO_PENDING]:
self.type = OverlappedType.TYPE_NOT_STARTED
RaiseFromWindowsErr(self.error)
def PeekNamedPipe(handle, size=0):
nread = _ffi.new("DWORD*")
navail = _ffi.new("DWORD*")
nleft = _ffi.new("DWORD*")
if size < 0:
raise ValueError("negative size")
if size:
buf = _ffi.new("CHAR[]", size)
if not buf:
return _ffi.NULL
ret = _kernel32.PeekNamedPipe(_int2handle(handle), buf, size, nread,
navail, nleft)
if not ret:
# In CPython SetExcFromWindowsErr is called here.
# Not sure what that is doing currently.
RaiseFromWindowsErr(0)
return buf, navail[0], nleft[0]
else:
ret = _kernel32.PeekNamedPipe(_int2handle(handle), _ffi.NULL, 0, _ffi.NULL, navail, nleft)
if not ret:
# In CPython SetExcFromWindowsErr is called here.
# Not sure what that is doing currently.
RaiseFromWindowsErr(0)
return navail[0], nleft[0]
def do_WSARecv(self, handle, allocatedbuffer, size, flags):
nread = _ffi.new("LPDWORD")
wsabuff = _ffi.new("WSABUF[1]")
buffercount = _ffi.new("DWORD[1]", [1])
pflags = _ffi.new("LPDWORD")
pflags[0] = flags
wsabuff[0].len = size
wsabuff[0].buf = allocatedbuffer
result = _winsock2.WSARecv(handle, wsabuff, _int2dword(1), nread,
pflags, self.overlapped, _ffi.NULL)
if result == SOCKET_ERROR:
self.error = _kernel32.GetLastError()
else:
self.error = _winapi.ERROR_SUCCESS
if self.error == _winapi.ERROR_BROKEN_PIPE:
mark_as_completed(self.overlapped)
RaiseFromWindowsErr(self.error)
elif self.error in [
_winapi.ERROR_SUCCESS, _winapi.ERROR_MORE_DATA,
_winapi.ERROR_IO_PENDING
]:
return None
else:
self.type = OverlappedType.TYPE_NOT_STARTED
RaiseFromWindowsErr(self.error)
def CreateProcess(name, command_line, process_attr, thread_attr, inherit,
flags, env, start_dir, startup_info):
si = _ffi.new("STARTUPINFO *")
if startup_info is not None:
si.dwFlags = startup_info.dwFlags
si.wShowWindow = startup_info.wShowWindow
# CPython: these three handles are expected to be
# subprocess.Handle (int) objects
if startup_info.hStdInput:
si.hStdInput = _int2handle(startup_info.hStdInput)
if startup_info.hStdOutput:
si.hStdOutput = _int2handle(startup_info.hStdOutput)
if startup_info.hStdError:
si.hStdError = _int2handle(startup_info.hStdError)
pi = _ffi.new("PROCESS_INFORMATION *")
flags |= CREATE_UNICODE_ENVIRONMENT
if env is not None:
envbuf = ""
for k, v in env.items():
envbuf += "%s=%s\0" % (k, v)
envbuf += '\0'
else:
envbuf = _ffi.NULL
res = _kernel32.CreateProcessW(_Z(name), _Z(command_line), _ffi.NULL,
_ffi.NULL, inherit, flags, envbuf,
_Z(start_dir), si, pi)
if not res:
raise _WinError()
return (_handle2int(pi.hProcess), _handle2int(pi.hThread), pi.dwProcessId,
pi.dwThreadId)
def CreateProcess(name, command_line, process_attr, thread_attr,
inherit, flags, env, start_dir, startup_info):
si = _ffi.new("STARTUPINFO *")
if startup_info is not None:
si.dwFlags = startup_info.dwFlags
si.wShowWindow = startup_info.wShowWindow
# CPython: these three handles are expected to be _handle objects
if startup_info.hStdInput:
si.hStdInput = startup_info.hStdInput.c_handle
if startup_info.hStdOutput:
si.hStdOutput = startup_info.hStdOutput.c_handle
if startup_info.hStdError:
si.hStdError = startup_info.hStdError.c_handle
pi = _ffi.new("PROCESS_INFORMATION *")
if env is not None:
envbuf = ""
for k, v in env.iteritems():
envbuf += "%s=%s\0" % (k, v)
envbuf += '\0'
else:
envbuf = _ffi.NULL
res = _kernel32.CreateProcessA(_z(name), _z(command_line), _ffi.NULL,
_ffi.NULL, inherit, flags, envbuf,
_z(start_dir), si, pi)
if not res:
raise _WinError()
return (_handle(pi.hProcess),
_handle(pi.hThread),
pi.dwProcessId,
pi.dwThreadId)
def SetNamedPipeHandleState(namedpipe, mode, max_collection_count, collect_data_timeout):
d0 = _ffi.new('DWORD[1]', [mode])
if max_collection_count is None:
d1 = NULL
else:
d1 = _ffi.new('DWORD[1]', [max_collection_count])
if collect_data_timeout is None:
d2 = NULL
else:
d2 = _ffi.new('DWORD[1]', [collect_data_timeout])
ret = _kernel32.SetNamedPipeHandleState(namedpipe, d0, d1, d2)
if not ret:
raise _WinError()
def ConnectEx(self, socket, addressobj):
socket = _int2handle(socket)
if self.type != OverlappedType.TYPE_NONE:
_winapi.raise_WinError()
address = _ffi.new("struct sockaddr_in6*")
length = _ffi.sizeof("struct sockaddr_in6")
address, length = parse_address(addressobj,
_ffi.cast("SOCKADDR*", address),
length)
if length < 0:
return None
self.type = OverlappedType.TYPE_CONNECT
self.handle = socket
res = _connect_ex[0](socket, address, length, \
_ffi.NULL, 0, _ffi.NULL, self.overlapped)
if res:
self.error = _winapi.ERROR_SUCCESS
else:
self.error = _kernel32.GetLastError()
if self.error == _winapi.ERROR_SUCCESS or self.error == _winapi.ERROR_IO_PENDING:
return None
else:
self.type = OverlappedType.TYPE_NOT_STARTED
RaiseFromWindowsErr(0)
def WriteFile(self, handle, buffer):
self.handle = _int2handle(handle)
self.write_buffer = buffer
written = _ffi.new('DWORD[1]', [0])
# Check if we have already performed some IO
if self.type != OverlappedType.TYPE_NONE:
_winapi.raise_WinError()
self.type = OverlappedType.TYPE_WRITE
ret = _kernel32.WriteFile(self.handle, self.write_buffer,
len(self.write_buffer), written,
self.overlapped)
if ret:
self.error = _winapi.ERROR_SUCCESS
else:
self.error = _kernel32.GetLastError()
if self.error == _winapi.ERROR_SUCCESS or self.error == _winapi.ERROR_IO_PENDING:
return None
else:
self.type = OverlappedType.TYPE_NOT_STARTED
RaiseFromWindowsErr(self.error)
def GetOverlappedResult(self, wait):
transferred = _ffi.new('DWORD[1]', [0])
if self.type == OverlappedType.TYPE_NONE:
return _ffi.NULL
if self.type == OverlappedType.TYPE_NOT_STARTED:
return _ffi.NULL
res = _kernel32.GetOverlappedResult(self.handle, self.overlapped,
transferred, wait != 0)
if res:
err = _winapi.ERROR_SUCCESS
else:
err = _kernel32.GetLastError()
self.error = err
if err != _winapi.ERROR_SUCCESS and err != _winapi.ERROR_MORE_DATA:
if not (err == _winapi.ERROR_BROKEN_PIPE and (self.type in [
OverlappedType.TYPE_READ, OverlappedType.TYPE_READINTO
])):
RaiseFromWindowsErr(err)
if self.type == OverlappedType.TYPE_READ:
return _ffi.unpack(self.read_buffer, transferred[0])
else:
return transferred[0]
def initiailize_function_ptrs():
## importing socket ensures that WSAStartup() is called
import _socket
s = _winsock2.socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)
dwBytes = _ffi.new("DWORD[1]", [0])
if s == INVALID_SOCKET:
_winapi.raise_WinError()
result = _winsock2.WSAIoctl(s, SIO_GET_EXTENSION_FUNCTION_POINTER, \
WSAID_ACCEPTEX, _ffi.sizeof(WSAID_ACCEPTEX[0]), _accept_ex, \
_ffi.sizeof(_accept_ex[0]), dwBytes, _ffi.NULL, _ffi.NULL)
if result == INVALID_SOCKET:
_winsock2.closesocket(s)
_winapi.raise_WinError()
result = _winsock2.WSAIoctl(s, SIO_GET_EXTENSION_FUNCTION_POINTER, \
WSAID_CONNECTEX, _ffi.sizeof(WSAID_CONNECTEX[0]), _connect_ex, \
_ffi.sizeof(_connect_ex[0]), dwBytes, _ffi.NULL, _ffi.NULL)
if result == INVALID_SOCKET:
_winsock2.closesocket(s)
_winapi.raise_WinError()
result = _winsock2.WSAIoctl(s, SIO_GET_EXTENSION_FUNCTION_POINTER, \
WSAID_DISCONNECTEX, _ffi.sizeof(WSAID_DISCONNECTEX[0]), _disconnect_ex, \
_ffi.sizeof(_disconnect_ex[0]), dwBytes, _ffi.NULL, _ffi.NULL)
_winsock2.closesocket(s)
if result == INVALID_SOCKET:
_winapi.raise_WinError()
def GetModuleFileName(module):
buf = _ffi.new("wchar_t[]", _MAX_PATH)
res = _kernel32.GetModuleFileNameW(_int2handle(module), buf, _MAX_PATH)
if not res:
raise _WinError()
return _ffi.string(buf)
def GetModuleFileName(module):
buf = _ffi.new("wchar_t[]", _MAX_PATH)
res = _kernel32.GetModuleFileNameW(_int2handle(module), buf, _MAX_PATH)
if not res:
raise _WinError()
return _ffi.string(buf)
def CreatePipe(attributes, size):
handles = _ffi.new("HANDLE[2]")
res = _kernel32.CreatePipe(handles, handles + 1, NULL, size)
if not res:
RaiseFromWindowsErr(GetLastError())
return _handle2int(handles[0]), _handle2int(handles[1])
def CreatePipe(attributes, size):
handles = _ffi.new("HANDLE[2]")
res = _kernel32.CreatePipe(handles, handles + 1, _ffi.NULL, size)
if not res:
raise _WinError()
return _handle(handles[0]), _handle(handles[1])
def __init__(self, handle):
self.overlapped = _ffi.new('OVERLAPPED[1]')
self.handle = handle
self.readbuffer = None
self.pending = 0
self.completed = 0
self.writebuffer = None
self.overlapped[0].hEvent = \
_kernel32.CreateEventW(NULL, True, False, NULL)
def CreatePipe(attributes, size):
handles = _ffi.new("HANDLE[2]")
res = _kernel32.CreatePipe(handles, handles + 1, NULL, size)
if not res:
raise _WinError()
return _handle2int(handles[0]), _handle2int(handles[1])
def GetExitCodeProcess(handle):
# CPython: the first argument is expected to be an integer.
code = _ffi.new("DWORD[1]")
res = _kernel32.GetExitCodeProcess(_int2handle(handle), code)
if not res:
raise _WinError()
return code[0]
def WSARecv(self, handle, size, flags):
handle = _int2handle(handle)
flags = _int2dword(flags)
if self.type != OverlappedType.TYPE_NONE:
_winapi.raise_WinError()
self.type = OverlappedType.TYPE_READ
self.handle = _int2handle(handle)
self.read_buffer = _ffi.new("CHAR[]", max(1, size))
return self.do_WSARecv(handle, self.read_buffer, size, flags)
def GetExitCodeProcess(handle):
# CPython: the first argument is expected to be an integer.
code = _ffi.new("DWORD[1]")
res = _kernel32.GetExitCodeProcess(_int2handle(handle), code)
if not res:
raise _WinError()
return code[0]
def __init__(self, handle):
self.overlapped = _ffi.new('OVERLAPPED[1]')
self.handle = _handle2int(handle)
self.readbuffer = None
self.pending = 0
self.completed = 0
self.writebuffer = None
self.overlapped[0].hEvent = \
_kernel32.CreateEventW(NULL, True, False, NULL)
if not self.overlapped[0].hEvent:
raise_WinError(IOError)
def WaitForMultipleObjects(handle_sequence, waitflag, milliseconds):
if len(handle_sequence) > MAXIMUM_WAIT_OBJECTS:
return None
handle_sequence = list(map(_int2handle, handle_sequence))
handle_sequence = _ffi.new("HANDLE[]", handle_sequence)
# CPython makes the wait interruptible by ctrl-c. We need to add this in at some point
res = _kernel32.WaitForMultipleObjects(len(handle_sequence), handle_sequence, waitflag, milliseconds)
if res == WAIT_FAILED:
raise_WinError()
return int(res)
def ConnectPipe(address):
err = _winapi.ERROR_PIPE_BUSY
waddress = _ffi.new("wchar_t[]", address)
handle = _kernel32.CreateFileW(
waddress, _winapi.GENERIC_READ | _winapi.GENERIC_WRITE, 0, _ffi.NULL,
_winapi.OPEN_EXISTING, _winapi.FILE_FLAG_OVERLAPPED, _ffi.NULL)
err = _kernel32.GetLastError()
if handle == INVALID_HANDLE_VALUE or err == _winapi.ERROR_PIPE_BUSY:
RaiseFromWindowsErr(err)
return _handle2int(handle)
def __del__(self):
# do this somehow else
xxx
err = _kernel32.GetLastError()
bytes = _ffi.new('DWORD[1]')
o = overlapped[0]
if overlapped[0].pending:
if _kernel32.CancelIoEx(o.handle, o.overlapped) & \
self.GetOverlappedResult(o.handle, o.overlapped, _ffi.addressof(bytes), True):
# The operation is no longer pending, nothing to do
pass
else:
raise RuntimeError('deleting an overlapped strucwith a pending operation not supported')
def BindLocal(socket, family):
socket = _int2handle(socket)
if family == AF_INET:
addr = _ffi.new("struct sockaddr_in*")
addr[0].sin_family = AF_INET
addr[0].sin_port = 0
addr[0].sin_addr.S_un.S_addr = INADDR_ANY
paddr = _ffi.cast("PSOCKADDR", addr)
result = _winsock2.bind(socket, paddr,
_ffi.sizeof("struct sockaddr_in"))
elif family == AF_INET6:
addr = _ffi.new("struct sockaddr_in6*")
addr.sin6_family = AF_INET6
addr.sin6_port = 0
addr.sin6_addr = in6addr_any[0]
result = _winsock2.bind(socket, _ffi.cast("PSOCKADDR", addr),
_ffi.sizeof("struct sockaddr_in"))
else:
raise ValueError()
if result == SOCKET_ERROR:
RaiseFromWindowsErr(0)
def ReadFile(handle, size, overlapped):
nread = _ffi.new("DWORD*")
err = _ffi.new("DWORD*")
use_overlapped = overlapped
overlapped = None
buf = _ffi.new("CHAR[]", size)
if not buf:
return _ffi.NULL
if use_overlapped:
overlapped = Overlapped(handle)
if not overlapped:
return _ffi.NULL
overlapped.readbuffer = buf
if overlapped:
ret = _kernel32.ReadFile(_int2handle(handle), buf, size, nread,
overlapped.overlapped)
else:
ret = _kernel32.ReadFile(_int2handle(handle), buf, size, nread,
_ffi.NULL)
if ret:
err = 0
else:
err = _kernel32.GetLastError()
if use_overlapped:
if not ret:
if err == ERROR_IO_PENDING:
overlapped.pending = 1
elif err != ERROR_MORE_DATA:
return _WinError(IOError)
return overlapped, err
if (not ret) and err != ERROR_MORE_DATA:
return _WinError(IOError)
return buf, err
def GetOverlappedResult(self, wait):
transferred = _ffi.new('DWORD[1]', [0])
res = _kernel32.GetOverlappedResult(_int2handle(self.handle), self.overlapped, transferred, wait != 0)
if res:
err = ERROR_SUCCESS
else:
err = _kernel32.GetLastError()
if err in (ERROR_SUCCESS, ERROR_MORE_DATA, ERROR_OPERATION_ABORTED):
self.completed = 1
self.pending = 0
elif res != ERROR_IO_INCOMPLETE:
self.pending = 0
print('GetOverlappedResult got err', err)
raise_WinError(IOError)
if self.completed and self.readbuffer:
if transferred[0] != len(self.readbuffer):
tempbuffer = _ffi.new("CHAR[]", transferred[0])
_ffi.memmove(tempbuffer, self.readbuffer, transferred[0])
self.readbuffer = tempbuffer
return transferred[0], err
def DuplicateHandle(source_process, source, target_process, access, inherit, options=0):
# CPython: the first three arguments are expected to be integers
target = _ffi.new("HANDLE[1]")
res = _kernel32.DuplicateHandle(
_int2handle(source_process),
_int2handle(source),
_int2handle(target_process),
target, access, inherit, options)
if not res:
raise _WinError()
return _handle(target[0])
def DuplicateHandle(source_process, source, target_process, access, inherit, options=0):
# CPython: the first three arguments are expected to be integers
target = _ffi.new("HANDLE[1]")
res = _kernel32.DuplicateHandle(
_int2handle(source_process),
_int2handle(source),
_int2handle(target_process),
target, access, inherit, options)
if not res:
raise _WinError()
return _handle2int(target[0])
def CreateProcess(name, command_line, process_attr, thread_attr,
inherit, flags, env, start_dir, startup_info):
si = _ffi.new("STARTUPINFO *")
if startup_info is not None:
si.dwFlags = startup_info.dwFlags
si.wShowWindow = startup_info.wShowWindow
# CPython: these three handles are expected to be
# subprocess.Handle (int) objects
if startup_info.hStdInput:
si.hStdInput = _int2handle(startup_info.hStdInput)
if startup_info.hStdOutput:
si.hStdOutput = _int2handle(startup_info.hStdOutput)
if startup_info.hStdError:
si.hStdError = _int2handle(startup_info.hStdError)
pi = _ffi.new("PROCESS_INFORMATION *")
flags |= CREATE_UNICODE_ENVIRONMENT
if env is not None:
envbuf = ""
for k, v in env.items():
envbuf += "%s=%s\0" % (k, v)
envbuf += '\0'
else:
envbuf = _ffi.NULL
res = _kernel32.CreateProcessW(_Z(name), _Z(command_line), _ffi.NULL,
_ffi.NULL, inherit, flags, envbuf,
_Z(start_dir), si, pi)
if not res:
raise _WinError()
return (_handle2int(pi.hProcess),
_handle2int(pi.hThread),
pi.dwProcessId,
pi.dwThreadId)
def RegisterWaitWithQueue(object, completionport, ovaddress, miliseconds):
data = _ffi.cast('PostCallbackData*',
_winapi.malloc(_ffi.sizeof("PostCallbackData")))
newwaitobject = _ffi.new("HANDLE*")
data[0].hCompletionPort = _int2handle(completionport)
data[0].Overlapped = _int2overlappedptr(ovaddress)
ret = _kernel32.RegisterWaitForSingleObject(
newwaitobject, _int2handle(object),
_ffi.cast("WAITORTIMERCALLBACK",
post_to_queue_callback), data, miliseconds,
_kernel32.WT_EXECUTEINWAITTHREAD | _kernel32.WT_EXECUTEONLYONCE)
if not ret:
RaiseFromWindowsErr(0)
return _handle2int(newwaitobject[0])
def __del__(self):
# do this somehow else
err = _kernel32.GetLastError()
bytes = _ffi.new('DWORD[1]')
if self.pending:
result = _kernel32.CancelIoEx(_int2handle(self.handle), self.overlapped)
if result:
_kernel32.GetOverlappedResult(_int2handle(self.handle), self.overlapped, bytes, True)
# The operation is no longer pending, nothing to do
#else:
# We need to raise a warning here and not crash pypy
#raise RuntimeError('deleting an overlapped struct with a pending operation not supported')
CloseHandle(_int2handle(self.overlapped[0].hEvent))
_kernel32.SetLastError(err)