TODO

remove DDSFunc.__getattr__ by making prototypes setattr functions to it

fix __del__ errors if __init__ fails

handle SampleInfo - something to do with invalid sample on other producer quitting

copy defines for datatypes and check/reorder all

integrate with twisted

use get_*_array or get_*_sequence to speed it up

types
    done
        string
        long
        double
        unsigned long long
        boolean
        array
        sequence
        unsigned short
        short
        unsigned long
        struct
    
    undone
        union
        enum
        alias
        value
        sparse
        null
        raw_bytes
        raw_bytes_keyed

problem
    error
        Received {'current16': 12.446920090116809, 'timestamp': 1318276565709613056L, 'voltage16': 17.36217252284728, 'tickcount': 3576434793L, 'current': [0.18977993695684803, 0.7365952163771862, 0.5685053601942396, 0.7077487608127387, 0.12176483230562274, 0.12798767408282818, 0.09944259345798367, 0.5975122110003311], 'state': 4481, 'flags': 3731466278L, 'voltage32': 32.873356782811015, 'estop': True, 'current32': 4.284274095865942} on t7
        Received {'username': '1009', 'message': '33'} on t5
        ^CTraceback (most recent call last):
          File "test.py", line 28, in <module>
            msg = t.recv()
          File "/home/forrest/repos/sub/dds_test/dds.py", line 475, in recv
            self._dyn_narrowed_reader.take(ctypes.byref(data_seq), ctypes.byref(info_seq), 1, get('ANY_SAMPLE_STATE', DDS_SampleStateMask), get('ANY_VIEW_STATE', DDS_ViewStateMask), get('ANY_INSTANCE_STATE', DDS_InstanceStateMask))
          File "/home/forrest/repos/sub/dds_test/dds.py", line 96, in m
            return f(self2, *args)
          File "/home/forrest/repos/sub/dds_test/dds.py", line 14, in check_code
            def check_code(result, func, arguments):
        KeyboardInterrupt
        [D0100|Sub(309)|T=t6|DELETE Reader]PRESPsService_destroyLocalEndpoint:!delete local reader
        [D0100|Sub(309)|T=t6|DELETE Reader]DDS_DataReader_deleteI:!delete PRESLocalEndpoint
        [D0100|Sub(309)|T=t6|DELETE Reader]DDS_Subscriber_delete_datareader:!delete reader
        Exception dds.Error: Error('precondition not met',) in <bound method Topic.__del__ of <dds.Topic object at 0x1a1c690>> ignored
        [D0100|DELETE Sub]PRESPsService_destroyGroupWithCursor:!no local endpoint in group
        [D0100|DELETE Sub]PRESPsService_destroyGroup:!delete group
        [D0100|DELETE Sub]DDS_Subscriber_destroyI():!delete PRESGroup
        [D0100|DELETE Sub]DDS_DomainParticipant_delete_subscriber:!delete subscriber
        Exception dds.Error: Error('precondition not met',) in <bound method DDS.__del__ of <dds.DDS object at 0x1a27ad0>> ignored
    
    only solution is to ignore SIGINT globally because we can't prevent an exception from being triggered in between a ctypes function returning and the variable holding the result being set
        twisted automatically does this

find if this is cleaner
    class DDSInnerAcc(object):
        def __init__(self, type):
            self._type = type
        
        def __getattr__(self, attr):
            contents = ctypes.cast(getattr(_ddsc_lib, 'DDS_' + attr), ctypes.POINTER(self._type)).contents
            setattr(self, attr, contents)
            return contents
            

    @apply
    class DDSAcc(object):
        def __getattr__(self, attr):
            contents = DDSInnerAcc(globals()[attr])
            setattr(self, attr, contents)
            return contents