SVGHMI : had to move the problem of wkaing up python thread from plc thread to platform specific code.
Since Xenomai's cobalt thread are definitely incompatible with normal posix python interpreter binary's thread, we must synchronize them with arcane rt_pipes (the only ones that really work cross domain) as already done in debug and python async eval blocks.
#!/usr/bin/env python
# -*- coding: utf-8 -*-
# See COPYING file for copyrights details.
from __future__ import absolute_import
import hashlib
class ConnectorBase(object):
chuncksize = 1024*1024
def BlobFromFile(self, filepath, seed):
s = hashlib.new('md5')
s.update(seed)
blobID = self.SeedBlob(seed)
with open(filepath, "rb") as f:
while blobID == s.digest():
chunk = f.read(self.chuncksize)
if len(chunk) == 0:
return blobID
blobID = self.AppendChunkToBlob(chunk, blobID)
s.update(chunk)
raise IOError("Data corrupted during transfer or connection lost")