beremiz

Added runtime/spawn_subprocess.py. Force use posix spawn instead of fork, with API similar to subprocess. Using fork in runtime is incompatible with Xenomai, because memory is locked and this can lead to out of memory error.

2018-10-23, Edouard Tisserant
7ce4e5cf6339
Added runtime/spawn_subprocess.py. Force use posix spawn instead of fork, with API similar to subprocess. Using fork in runtime is incompatible with Xenomai, because memory is locked and this can lead to out of memory error.
#!/usr/bin/env python
# -*- coding: utf-8 -*-
# This file is part of Beremiz.
# See COPYING file for copyrights details.
from __future__ import absolute_import
from plcopen.XSLTModelQuery import XSLTModelQuery
class InstancesPathCollector(XSLTModelQuery):
""" object for collecting instances path list"""
def __init__(self, controller):
self.Instances = []
XSLTModelQuery.__init__(self,
controller,
"instances_path.xslt",
[("AddInstance", self.AddInstance)])
def AddInstance(self, context, *args):
self.Instances.append(args[0][0])
def Collect(self, root, name, debug):
self._process_xslt(root, debug, instance_type=name)
res = self.Instances
self.Instances = []
return res