コード例 #1
0
 def ThreadLoop(self, startupEvent):
     try:
         hDir = CreateFile(
             self.path, FILE_LIST_DIRECTORY,
             FILE_SHARE_READ | FILE_SHARE_WRITE, None, OPEN_EXISTING,
             FILE_FLAG_BACKUP_SEMANTICS | FILE_FLAG_OVERLAPPED, 0)
         if hDir == INVALID_HANDLE_VALUE:
             self.startException = FormatError()
             startupEvent.set()
             return
         overlapped = OVERLAPPED()
         overlapped.hEvent = CreateEvent(None, 1, 0, None)
         buffer = (c_byte * BUFSIZE)()
         events = (HANDLE * 2)(overlapped.hEvent, self.stopEvent)
         flags = (FILE_NOTIFY_CHANGE_FILE_NAME | FILE_NOTIFY_CHANGE_DIR_NAME
                  | FILE_NOTIFY_CHANGE_ATTRIBUTES | FILE_NOTIFY_CHANGE_SIZE
                  | FILE_NOTIFY_CHANGE_LAST_WRITE
                  | FILE_NOTIFY_CHANGE_SECURITY)
         includeSubdirs = self.includeSubdirs
         renamePath = None
         bytesReturned = DWORD()
         noneCallback = cast(None, LPOVERLAPPED_COMPLETION_ROUTINE)
         startupEvent.set()
         while 1:
             ReadDirectoryChangesW(hDir, buffer, BUFSIZE, includeSubdirs,
                                   flags, byref(bytesReturned),
                                   byref(overlapped), noneCallback)
             rc = MsgWaitForMultipleObjects(2, events, 0, INFINITE,
                                            QS_ALLINPUT)
             if rc == WAIT_OBJECT_0:
                 res = GetOverlappedResult(hDir, byref(overlapped),
                                           byref(bytesReturned), 1)
                 address = addressof(buffer)
                 while True:
                     fni = FILE_NOTIFY_INFORMATION.from_address(address)
                     length = fni.FileNameLength / WCHAR_SIZE
                     fileName = wstring_at(address + 12, length)
                     action = fni.Action
                     fullFilename = os.path.join(self.path, fileName)
                     if action == FILE_ACTION_ADDED:
                         self.TriggerEvent("Created", (fullFilename, ))
                     elif action == FILE_ACTION_REMOVED:
                         self.TriggerEvent("Deleted", (fullFilename, ))
                     elif action == FILE_ACTION_MODIFIED:
                         self.TriggerEvent("Updated", (fullFilename, ))
                     elif action == FILE_ACTION_RENAMED_OLD_NAME:
                         renamePath = fullFilename
                     elif action == FILE_ACTION_RENAMED_NEW_NAME:
                         self.TriggerEvent("Renamed",
                                           (renamePath, fullFilename))
                         renamePath = None
                     if fni.NextEntryOffset == 0:
                         break
                     address += fni.NextEntryOffset
             elif rc == WAIT_OBJECT_0 + 1:
                 break
         CloseHandle(hDir)
     except:
         self.thread = None
         raise
コード例 #2
0
    def StatusCheckLoop(self):
        hComm = self.hFile
        waitingOnStatusHandle = False
        dwCommEvent = DWORD()
        dwOvRes = DWORD()
        commMask = (
            EV_BREAK | EV_CTS | EV_DSR | EV_ERR | EV_RING
            | EV_RLSD | EV_RXCHAR | EV_RXFLAG | EV_TXEMPTY
        )

        if not SetCommMask(self.hFile, commMask):
            raise SerialError("error setting communications mask")

        osStatus = OVERLAPPED(0)
        osStatus.hEvent = CreateEvent(None, 1, 0, None)
        if not osStatus.hEvent:
            raise SerialError("error creating event")

        while True:
            # Issue a status event check if one hasn't been issued already.
            if not waitingOnStatusHandle:
                if WaitCommEvent(hComm, byref(dwCommEvent), byref(osStatus)):
                    # WaitCommEvent returned immediately.
                    # Deal with status event as appropriate.
                    self.ReportStatusEvent(dwCommEvent.value)
                else:
                    if GetLastError() == ERROR_IO_PENDING:
                        waitingOnStatusHandle = True
                    else:
                        raise SerialError("error in WaitCommEvent")

            # Check on overlapped operation
            if waitingOnStatusHandle:
                # Wait a little while for an event to occur.
                res = WaitForSingleObject(osStatus.hEvent, 1000)
                if res == WAIT_OBJECT_0:
                    if GetOverlappedResult(
                        hComm, byref(osStatus), byref(dwOvRes), 0
                    ):
                        # Status event is stored in the event flag
                        # specified in the original WaitCommEvent call.
                        # Deal with the status event as appropriate.
                        self.ReportStatusEvent(dwCommEvent.value)
                    else:
                        # An error occurred in the overlapped operation;
                        # call GetLastError to find out what it was
                        # and abort if it is fatal.
                        raise SerialError()
                    # Set waitingOnStatusHandle flag to indicate that a new
                    # WaitCommEvent is to be issued.
                    waitingOnStatusHandle = True
                elif res == WAIT_TIMEOUT:
                    print "timeout"
                else:
                    # This indicates a problem with the OVERLAPPED structure's
                    # event handle.
                    CloseHandle(osStatus.hEvent)
                    raise SerialError("error in the WaitForSingleObject")

        CloseHandle(osStatus.hEvent)
コード例 #3
0
ファイル: SerialThread.py プロジェクト: bruinlax/EventGhost
    def StatusCheckLoop(self):
        hComm = self.hFile
        waitingOnStatusHandle = False
        dwCommEvent = DWORD()
        dwOvRes = DWORD()
        commMask = (
            EV_BREAK | EV_CTS | EV_DSR | EV_ERR | EV_RING
            | EV_RLSD | EV_RXCHAR | EV_RXFLAG | EV_TXEMPTY
        )

        if not SetCommMask(self.hFile, commMask):
            raise SerialError("error setting communications mask")

        osStatus = OVERLAPPED(0)
        osStatus.hEvent = CreateEvent(None, 1, 0, None)
        if not osStatus.hEvent:
            raise SerialError("error creating event")

        while True:
            # Issue a status event check if one hasn't been issued already.
            if not waitingOnStatusHandle:
                if WaitCommEvent(hComm, byref(dwCommEvent), byref(osStatus)):
                    # WaitCommEvent returned immediately.
                    # Deal with status event as appropriate.
                    self.ReportStatusEvent(dwCommEvent.value)
                else:
                    if GetLastError() == ERROR_IO_PENDING:
                        waitingOnStatusHandle = True
                    else:
                        raise SerialError("error in WaitCommEvent")

            # Check on overlapped operation
            if waitingOnStatusHandle:
                # Wait a little while for an event to occur.
                res = WaitForSingleObject(osStatus.hEvent, 1000)
                if res == WAIT_OBJECT_0:
                    if GetOverlappedResult(
                        hComm, byref(osStatus), byref(dwOvRes), 0
                    ):
                        # Status event is stored in the event flag
                        # specified in the original WaitCommEvent call.
                        # Deal with the status event as appropriate.
                        self.ReportStatusEvent(dwCommEvent.value)
                    else:
                        # An error occurred in the overlapped operation;
                        # call GetLastError to find out what it was
                        # and abort if it is fatal.
                        raise SerialError()
                    # Set waitingOnStatusHandle flag to indicate that a new
                    # WaitCommEvent is to be issued.
                    waitingOnStatusHandle = True
                elif res == WAIT_TIMEOUT:
                    print "timeout"
                else:
                    # This indicates a problem with the OVERLAPPED structure's
                    # event handle.
                    CloseHandle(osStatus.hEvent)
                    raise SerialError("error in the WaitForSingleObject")

        CloseHandle(osStatus.hEvent)
コード例 #4
0
    def __init__(self, hFile=0):
        Thread.__init__(self, target=self.ReceiveThreadProc)
        self.hFile = int(hFile)
        self.osWriter = OVERLAPPED()
        self.osWriter.hEvent = CreateEvent(None, 0, 0, None)
        self.osReader = OVERLAPPED()
        self.osReader.hEvent = CreateEvent(None, 1, 0, None)
        self.dwRead = DWORD()
        self.comstat = COMSTAT()
        self.dcb = DCB()
        self.dcb.DCBlength = sizeof(DCB)
        self.oldCommTimeouts = COMMTIMEOUTS()

        self.readEventCallback = None
        self.readEventLock = Lock()
        self.readEventLock.acquire()
        self.readCondition = Condition()
        self.buffer = ""
        self.keepAlive = True
        self.stopEvent = CreateEvent(None, 1, 0, None)
        self.callbackThread = Thread(target=self.CallbackThreadProc,
                                     name="SerialReceiveThreadProc")
コード例 #5
0
ファイル: __init__.py プロジェクト: AssetsInc/EventGhost
 def ThreadLoop(self, startupEvent):
     try:
         hDir = CreateFile(
             self.path,
             FILE_LIST_DIRECTORY,
             FILE_SHARE_READ|FILE_SHARE_WRITE,
             None,
             OPEN_EXISTING,
             FILE_FLAG_BACKUP_SEMANTICS|FILE_FLAG_OVERLAPPED,
             0
         )
         if hDir == INVALID_HANDLE_VALUE:
             self.startException = FormatError()
             startupEvent.set()
             return
         overlapped = OVERLAPPED()
         overlapped.hEvent = CreateEvent(None, 1, 0, None)
         buffer = (c_byte * BUFSIZE )()
         events = (HANDLE * 2)(overlapped.hEvent, self.stopEvent)
         flags = (
             FILE_NOTIFY_CHANGE_FILE_NAME |
             FILE_NOTIFY_CHANGE_DIR_NAME |
             FILE_NOTIFY_CHANGE_ATTRIBUTES |
             FILE_NOTIFY_CHANGE_SIZE |
             FILE_NOTIFY_CHANGE_LAST_WRITE |
             FILE_NOTIFY_CHANGE_SECURITY
         )
         includeSubdirs = self.includeSubdirs
         renamePath = None
         bytesReturned = DWORD()
         noneCallback = cast(None, LPOVERLAPPED_COMPLETION_ROUTINE)
         startupEvent.set()
         while 1:
             ReadDirectoryChangesW(
                 hDir,
                 buffer,
                 BUFSIZE,
                 includeSubdirs,
                 flags,
                 byref(bytesReturned),
                 byref(overlapped),
                 noneCallback
             )
             rc = MsgWaitForMultipleObjects(
                 2, events, 0, INFINITE, QS_ALLINPUT
             )
             if rc == WAIT_OBJECT_0:
                 res = GetOverlappedResult(
                     hDir, byref(overlapped), byref(bytesReturned), 1
                 )
                 address = addressof(buffer)
                 while True:
                     fni = FILE_NOTIFY_INFORMATION.from_address(address)
                     length = fni.FileNameLength / WCHAR_SIZE
                     fileName = wstring_at(address + 12, length)
                     action = fni.Action
                     fullFilename = os.path.join(self.path, fileName)
                     if action == FILE_ACTION_ADDED:
                         self.TriggerEvent("Created", (fullFilename,))
                     elif action == FILE_ACTION_REMOVED:
                         self.TriggerEvent("Deleted", (fullFilename,))
                     elif action == FILE_ACTION_MODIFIED:
                         self.TriggerEvent("Updated", (fullFilename,))
                     elif action == FILE_ACTION_RENAMED_OLD_NAME:
                         renamePath = fullFilename
                     elif action == FILE_ACTION_RENAMED_NEW_NAME:
                         self.TriggerEvent(
                             "Renamed",
                             (renamePath, fullFilename)
                         )
                         renamePath = None
                     if fni.NextEntryOffset == 0:
                         break
                     address += fni.NextEntryOffset
             elif rc == WAIT_OBJECT_0+1:
                 break
         CloseHandle(hDir)
     except:
         self.thread = None
         raise