[python-win32] Matlab COM object cause memory leak

[Thomas Lidebrandt]

Hello I have a Server application that uses Matlab, this works fine when I
use the Execute method to evaluate and retrieve data. However, using  the
method GetFullMatrix in the method getvar seems to cause a memory leak.
 Anyone got any idea?

I use the following code for the communication with Matlab

import pythoncom, pywintypes
from win32com.client import Dispatch

class MatlabServer():

    def __init__(self):

        pythoncom.CoInitialize()
        matlab_object = Dispatch('matlab.application.single')

        self.execute = getattr(matlab_object, 'Execute')
        self.putfullmatrix = getattr(matlab_object, 'PutFullMatrix')
        self.getfullmatrix = getattr(matlab_object, 'GetFullMatrix')
        self.getchararray = getattr(matlab_object, 'GetCharArray')

    def __del__(self):
        pythoncom.CoUninitialize()

    def setvar(self, xnam, x, workspace = "base"):
        if type(x) is not list:
            x = [ x ]
        self.putfullmatrix(xnam, workspace, x, None)

    def getvar(self, xnam, workspace = "base"):
        try:
            return self.getfullmatrix(xnam, workspace, None, None)[0]
        except pywintypes.com_error:
            return []

    def getstring(self, xnam, workspace = "base"):
        try:
            return self.getchararray(xnam, workspace)
        except pywintypes.com_error:
            return ''

/Thomas
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