Linux runtime: overrun detection for real-time timers and for plc execution.
If real-time timer wakes-up PLC thread too late (10% over period), then
warning is logged.
If PLC code (IO retreive, execution, IO publish) takes longer than requested
PLC execution cycle, then warning is logged, and CPU hoogging is mitigated
by delaying next PLC execution a few cylces more until having at least
1ms minimal idle time.
#!/usr/bin/env python
# -*- coding: utf-8 -*-
# This file is part of Beremiz, a Integrated Development Environment for
# programming IEC 61131-3 automates supporting plcopen standard and CanFestival.
#
# Copyright (C) 2007: Edouard TISSERANT and Laurent BESSARD
#
# See COPYING file for copyrights details.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
from __future__ import absolute_import
from __future__ import print_function
import os
import wx
readerexepath = None
def get_acroversion():
" Return version of Adobe Acrobat executable or None"
from six.moves import winreg
adobesoft = winreg.OpenKey(winreg.HKEY_LOCAL_MACHINE, r'Software\Adobe')
for index in range(winreg.QueryInfoKey(adobesoft)[0]):
key = winreg.EnumKey(adobesoft, index)
if "acrobat" in key.lower():
acrokey = winreg.OpenKey(winreg.HKEY_LOCAL_MACHINE, 'Software\\Adobe\\%s' % key)
for index in range(winreg.QueryInfoKey(acrokey)[0]):
numver = winreg.EnumKey(acrokey, index)
try:
res = winreg.QueryValue(winreg.HKEY_LOCAL_MACHINE, 'Software\\Adobe\\%s\\%s\\InstallPath' % (key, numver))
return res
except Exception:
pass
return None
def open_win_pdf(readerexepath, pdffile, pagenum=None):
if pagenum is not None:
os.spawnl(os.P_DETACH, readerexepath, "AcroRd32.exe", "/A", "page=%d=OpenActions" % pagenum, '"%s"' % pdffile)
else:
os.spawnl(os.P_DETACH, readerexepath, "AcroRd32.exe", '"%s"' % pdffile)
def open_lin_pdf(readerexepath, pdffile, pagenum=None):
if pagenum is None:
os.system("%s -remote DS301 %s &" % (readerexepath, pdffile))
else:
print("Open pdf %s at page %d" % (pdffile, pagenum))
os.system("%s -remote DS301 %s %d &" % (readerexepath, pdffile, pagenum))
def open_pdf(pdffile, pagenum=None):
if wx.Platform == '__WXMSW__':
try:
readerpath = get_acroversion()
except Exception:
wx.MessageBox("Acrobat Reader is not found or installed !")
return None
readerexepath = os.path.join(readerpath, "AcroRd32.exe")
if os.path.isfile(readerexepath):
open_win_pdf(readerexepath, pdffile, pagenum)
else:
return None
else:
readerexepath = os.path.join("/usr/bin", "xpdf")
if os.path.isfile(readerexepath):
open_lin_pdf(readerexepath, pdffile, pagenum)
else:
wx.MessageBox("xpdf is not found or installed !")
return None