runtime/PLCObject.py
author Edouard Tisserant
Thu, 12 Jun 2014 17:50:30 +0200
changeset 1418 c97dc5281419
parent 1288 adc79fc44079
child 1433 4a45f6642523
permissions -rwxr-xr-x
Fixed declaration and ST code gen for IEC function that return derivated types
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#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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#This file is part of Beremiz, a Integrated Development Environment for
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#programming IEC 61131-3 automates supporting plcopen standard and CanFestival. 
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#
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#Copyright (C) 2007: Edouard TISSERANT and Laurent BESSARD
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#
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#See COPYING file for copyrights details.
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#
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#This library is free software; you can redistribute it and/or
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#modify it under the terms of the GNU General Public
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#License as published by the Free Software Foundation; either
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#version 2.1 of the License, or (at your option) any later version.
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#
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#This library is distributed in the hope that it will be useful,
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#but WITHOUT ANY WARRANTY; without even the implied warranty of
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#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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#General Public License for more details.
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#
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#You should have received a copy of the GNU General Public
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#License along with this library; if not, write to the Free Software
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#Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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import Pyro.core as pyro
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from threading import Timer, Thread, Lock, Semaphore
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import ctypes, os, commands, types, sys
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from targets.typemapping import LogLevelsDefault, LogLevelsCount, TypeTranslator, UnpackDebugBuffer
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if os.name in ("nt", "ce"):
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    from _ctypes import LoadLibrary as dlopen
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    from _ctypes import FreeLibrary as dlclose
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elif os.name == "posix":
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    from _ctypes import dlopen, dlclose
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import traceback
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def get_last_traceback(tb):
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    while tb.tb_next:
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        tb = tb.tb_next
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    return tb
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lib_ext ={
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     "linux2":".so",
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     "win32":".dll",
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     }.get(sys.platform, "")
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def PLCprint(message):
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    sys.stdout.write("PLCobject : "+message+"\n")
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    sys.stdout.flush()
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class PLCObject(pyro.ObjBase):
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    _Idxs = []
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    def __init__(self, workingdir, daemon, argv, statuschange, evaluator, website):
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        pyro.ObjBase.__init__(self)
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        self.evaluator = evaluator
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        self.argv = [workingdir] + argv # force argv[0] to be "path" to exec...
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        self.workingdir = workingdir
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        self.PLCStatus = "Stopped"
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        self.PLClibraryHandle = None
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        self.PLClibraryLock = Lock()
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        self.DummyIteratorLock = None
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        # Creates fake C funcs proxies
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        self._FreePLC()
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        self.daemon = daemon
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        self.statuschange = statuschange
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        self.hmi_frame = None
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        self.website = website
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        self._loading_error = None
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        self.python_runtime_vars = None
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        # Get the last transfered PLC if connector must be restart
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        try:
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            self.CurrentPLCFilename=open(
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                             self._GetMD5FileName(),
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                             "r").read().strip() + lib_ext
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            self.LoadPLC()
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        except Exception, e:
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            self.PLCStatus = "Empty"
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            self.CurrentPLCFilename=None
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    def StatusChange(self):
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        if self.statuschange is not None:
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            self.statuschange(self.PLCStatus)
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    def LogMessage(self, *args):
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        if len(args) == 2:
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            level, msg = args
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        else:
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            level = LogLevelsDefault
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            msg, = args
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        return self._LogMessage(level, msg, len(msg))
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    def ResetLogCount(self):
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        if self._ResetLogCount is not None:
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            self._ResetLogCount()
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    def GetLogCount(self, level):
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        if self._GetLogCount is not None :
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            return int(self._GetLogCount(level))
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        elif self._loading_error is not None and level==0:
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            return 1
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    def GetLogMessage(self, level, msgid):
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        tick = ctypes.c_uint32()
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        tv_sec = ctypes.c_uint32()
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        tv_nsec = ctypes.c_uint32()
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        if self._GetLogMessage is not None:
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            maxsz = len(self._log_read_buffer)-1
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            sz = self._GetLogMessage(level, msgid, 
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                self._log_read_buffer, maxsz,
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                ctypes.byref(tick),
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                ctypes.byref(tv_sec),
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                ctypes.byref(tv_nsec))
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            if sz and sz <= maxsz:
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                self._log_read_buffer[sz] = '\x00'
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                return self._log_read_buffer.value,tick.value,tv_sec.value,tv_nsec.value
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        elif self._loading_error is not None and level==0:
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            return self._loading_error,0,0,0
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        return None
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    def _GetMD5FileName(self):
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        return os.path.join(self.workingdir, "lasttransferedPLC.md5")
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    def _GetLibFileName(self):
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        return os.path.join(self.workingdir,self.CurrentPLCFilename)
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    def LoadPLC(self):
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        """
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        Load PLC library
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        Declare all functions, arguments and return values
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        """
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        try:
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            self._PLClibraryHandle = dlopen(self._GetLibFileName())
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            self.PLClibraryHandle = ctypes.CDLL(self.CurrentPLCFilename, handle=self._PLClibraryHandle)
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            self._startPLC = self.PLClibraryHandle.startPLC
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            self._startPLC.restype = ctypes.c_int
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            self._startPLC.argtypes = [ctypes.c_int, ctypes.POINTER(ctypes.c_char_p)]
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            self._stopPLC_real = self.PLClibraryHandle.stopPLC
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            self._stopPLC_real.restype = None
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            self._PythonIterator = getattr(self.PLClibraryHandle, "PythonIterator", None)
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            if self._PythonIterator is not None:
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                self._PythonIterator.restype = ctypes.c_char_p
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                self._PythonIterator.argtypes = [ctypes.c_char_p, ctypes.POINTER(ctypes.c_void_p)]
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                self._stopPLC = self._stopPLC_real
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            else:
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                # If python confnode is not enabled, we reuse _PythonIterator
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                # as a call that block pythonthread until StopPLC 
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                self.PythonIteratorLock = Lock()
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                self.PythonIteratorLock.acquire()
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                def PythonIterator(res, blkid):
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                    self.PythonIteratorLock.acquire()
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                    self.PythonIteratorLock.release()
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                    return None
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                self._PythonIterator = PythonIterator
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                def __StopPLC():
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                    self._stopPLC_real()
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                    self.PythonIteratorLock.release()
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                self._stopPLC = __StopPLC
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229
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            self._ResetDebugVariables = self.PLClibraryHandle.ResetDebugVariables
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            self._ResetDebugVariables.restype = None
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            self._RegisterDebugVariable = self.PLClibraryHandle.RegisterDebugVariable
229
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            self._RegisterDebugVariable.restype = None
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            self._RegisterDebugVariable.argtypes = [ctypes.c_int, ctypes.c_void_p]
229
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   174
    
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            self._FreeDebugData = self.PLClibraryHandle.FreeDebugData
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            self._FreeDebugData.restype = None
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            self._GetDebugData = self.PLClibraryHandle.GetDebugData
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            self._GetDebugData.restype = ctypes.c_int  
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            self._GetDebugData.argtypes = [ctypes.POINTER(ctypes.c_uint32), ctypes.POINTER(ctypes.c_uint32), ctypes.POINTER(ctypes.c_void_p)]
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            self._suspendDebug = self.PLClibraryHandle.suspendDebug
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            self._suspendDebug.restype = ctypes.c_int
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            self._suspendDebug.argtypes = [ctypes.c_int]
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            self._resumeDebug = self.PLClibraryHandle.resumeDebug
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            self._resumeDebug.restype = None
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de452d65865c Python runtime now dlopens shared library immediatly after transfer, and release it only immediately before reloading a new one. This is probably going to reveal lot of dirty cleanups during start/stop cycles.
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            self._ResetLogCount = self.PLClibraryHandle.ResetLogCount
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            self._ResetLogCount.restype = None
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            self._GetLogCount = self.PLClibraryHandle.GetLogCount
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            self._GetLogCount.restype = ctypes.c_uint32
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            self._GetLogCount.argtypes = [ctypes.c_uint8]
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de452d65865c Python runtime now dlopens shared library immediatly after transfer, and release it only immediately before reloading a new one. This is probably going to reveal lot of dirty cleanups during start/stop cycles.
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            self._LogMessage = self.PLClibraryHandle.LogMessage
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            self._LogMessage.restype = ctypes.c_int
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            self._LogMessage.argtypes = [ctypes.c_uint8, ctypes.c_char_p, ctypes.c_uint32]
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            self._log_read_buffer = ctypes.create_string_buffer(1<<14) #16K
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            self._GetLogMessage = self.PLClibraryHandle.GetLogMessage
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            self._GetLogMessage.restype = ctypes.c_uint32
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            self._GetLogMessage.argtypes = [ctypes.c_uint8, ctypes.c_uint32, ctypes.c_char_p, ctypes.c_uint32, ctypes.POINTER(ctypes.c_uint32), ctypes.POINTER(ctypes.c_uint32), ctypes.POINTER(ctypes.c_uint32)]
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            self._loading_error = None
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            self.PythonRuntimeInit()
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            return True
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        except:
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            self._loading_error = traceback.format_exc()
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            PLCprint(self._loading_error)
229
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            return False
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a220a27defe5 Runtime now unloads and cleanup PLC before exit (created threads was preventing exit)
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    def UnLoadPLC(self):
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        self.PythonRuntimeCleanup()
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        self._FreePLC()
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229
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    def _FreePLC(self):
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   220
        """
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        Unload PLC library.
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   222
        This is also called by __init__ to create dummy C func proxies
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   223
        """
352
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        self.PLClibraryLock.acquire()
229
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        # Forget all refs to library
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        self._startPLC = lambda x,y:None
229
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   227
        self._stopPLC = lambda:None
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   228
        self._ResetDebugVariables = lambda:None
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c28f40b27798 Bug on RegisterDebugVariable when no PLC running fixed
laurent
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   229
        self._RegisterDebugVariable = lambda x, y:None
229
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   230
        self._IterDebugData = lambda x,y:None
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        self._FreeDebugData = lambda:None
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        self._GetDebugData = lambda:-1
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eed1dcf311a1 added return type to suspendDebug
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        self._suspendDebug = lambda x:-1
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        self._resumeDebug = lambda:None
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f2ef79f3dba0 Added native (not a plugin) asynchronous python eval function block - Beta. Code cleanup in C code templates.
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        self._PythonIterator = lambda:""
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        self._GetLogCount = None 
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        self._LogMessage = lambda l,m,s:PLCprint("OFF LOG :"+m)
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        self._GetLogMessage = None
229
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        self.PLClibraryHandle = None
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        # Unload library explicitely
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        if getattr(self,"_PLClibraryHandle",None) is not None:
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            dlclose(self._PLClibraryHandle)
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af20e07e53c5 Remove dirtylibs test while freeing plc libs in PLCObject.py
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   243
            self._PLClibraryHandle = None
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   244
        
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        self.PLClibraryLock.release()
229
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   246
        return False
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   247
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    def PythonRuntimeCall(self, methodname):
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        """ 
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        Calls init, start, stop or cleanup method provided by 
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   251
        runtime python files, loaded when new PLC uploaded
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   252
        """
1051
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   253
        for method in self.python_runtime_vars.get("_runtime_%s"%methodname, []):
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            res,exp = self.evaluator(method)
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   255
            if exp is not None: 
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   256
                self.LogMessage(0,'\n'.join(traceback.format_exception(*exp)))
1014
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   257
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   258
    def PythonRuntimeInit(self):
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   259
        MethodNames = ["init", "start", "stop", "cleanup"]
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   260
        self.python_runtime_vars = globals().copy()
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   261
        self.python_runtime_vars["WorkingDir"] = self.workingdir
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diff changeset
   262
        self.python_runtime_vars["website"] = self.website
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   263
        for methodname in MethodNames :
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diff changeset
   264
            self.python_runtime_vars["_runtime_%s"%methodname] = []
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   265
        self.python_runtime_vars["PLCObject"] = self
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   266
        self.python_runtime_vars["PLCBinary"] = self.PLClibraryHandle
1144
21475ee0e688 Added stub code and declarations for bidirectional access to PLC globals from python code (untested)
Edouard Tisserant
parents: 1132
diff changeset
   267
        class PLCSafeGlobals:
1145
203f4eff3313 Fixed PLC global var access from python. Added test in tests/python
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diff changeset
   268
            def __getattr__(_self, name):
1156
9708ed2a4ac2 Added more clear error message in case of access to non declared PLC global from python code
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   269
                try :
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   270
                    t = self.python_runtime_vars["_"+name+"_ctype"]
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   271
                except KeyError:
9708ed2a4ac2 Added more clear error message in case of access to non declared PLC global from python code
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                    raise KeyError("Try to get unknown shared global variable : %s"%name)
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   273
                v = t()
1145
203f4eff3313 Fixed PLC global var access from python. Added test in tests/python
Edouard Tisserant
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diff changeset
   274
                r = self.python_runtime_vars["_PySafeGetPLCGlob_"+name](ctypes.byref(v))
203f4eff3313 Fixed PLC global var access from python. Added test in tests/python
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   275
                return self.python_runtime_vars["_"+name+"_unpack"](v)
203f4eff3313 Fixed PLC global var access from python. Added test in tests/python
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diff changeset
   276
            def __setattr__(_self, name, value):
1156
9708ed2a4ac2 Added more clear error message in case of access to non declared PLC global from python code
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diff changeset
   277
                try :
9708ed2a4ac2 Added more clear error message in case of access to non declared PLC global from python code
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diff changeset
   278
                    t = self.python_runtime_vars["_"+name+"_ctype"]
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diff changeset
   279
                except KeyError:
9708ed2a4ac2 Added more clear error message in case of access to non declared PLC global from python code
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   280
                    raise KeyError("Try to set unknown shared global variable : %s"%name)
1145
203f4eff3313 Fixed PLC global var access from python. Added test in tests/python
Edouard Tisserant
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diff changeset
   281
                v = self.python_runtime_vars["_"+name+"_pack"](t,value)
203f4eff3313 Fixed PLC global var access from python. Added test in tests/python
Edouard Tisserant
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diff changeset
   282
                self.python_runtime_vars["_PySafeSetPLCGlob_"+name](ctypes.byref(v))
1144
21475ee0e688 Added stub code and declarations for bidirectional access to PLC globals from python code (untested)
Edouard Tisserant
parents: 1132
diff changeset
   283
        self.python_runtime_vars["PLCGlobals"] = PLCSafeGlobals()
972
659198075ce4 Redirect PyEval exceptions to logging
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diff changeset
   284
        try:
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   285
            for filename in os.listdir(self.workingdir):
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   286
                name, ext = os.path.splitext(filename)
659198075ce4 Redirect PyEval exceptions to logging
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   287
                if name.upper().startswith("RUNTIME") and ext.upper() == ".PY":
1014
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   288
                    execfile(os.path.join(self.workingdir, filename), self.python_runtime_vars)
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   289
                    for methodname in MethodNames: 
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diff changeset
   290
                        method = self.python_runtime_vars.get("_%s_%s" % (name, methodname), None)
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   291
                        if method is not None:
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diff changeset
   292
                            self.python_runtime_vars["_runtime_%s"%methodname].append(method)
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659198075ce4 Redirect PyEval exceptions to logging
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diff changeset
   293
        except:
659198075ce4 Redirect PyEval exceptions to logging
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diff changeset
   294
            self.LogMessage(0,traceback.format_exc())
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diff changeset
   295
            raise
368
86ecd8374dae Adding support for twisted website HMI
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diff changeset
   296
            
1014
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diff changeset
   297
        self.PythonRuntimeCall("init")
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diff changeset
   298
368
86ecd8374dae Adding support for twisted website HMI
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diff changeset
   299
        if self.website is not None:
86ecd8374dae Adding support for twisted website HMI
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diff changeset
   300
            self.website.PLCStarted()
291
701c0601db02 Added systematic stdout.flush runtime side, so that results appear in log window
etisserant
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diff changeset
   301
1014
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   302
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diff changeset
   303
    def PythonRuntimeCleanup(self):
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diff changeset
   304
        if self.python_runtime_vars is not None:
e2f7d6c95db0 Now python files provided by extentions have init, start, stop and cleanup hooks
Edouard Tisserant
parents: 1011
diff changeset
   305
            self.PythonRuntimeCall("cleanup")
e2f7d6c95db0 Now python files provided by extentions have init, start, stop and cleanup hooks
Edouard Tisserant
parents: 1011
diff changeset
   306
368
86ecd8374dae Adding support for twisted website HMI
laurent
parents: 366
diff changeset
   307
        if self.website is not None:
86ecd8374dae Adding support for twisted website HMI
laurent
parents: 366
diff changeset
   308
            self.website.PLCStopped()
1014
e2f7d6c95db0 Now python files provided by extentions have init, start, stop and cleanup hooks
Edouard Tisserant
parents: 1011
diff changeset
   309
e2f7d6c95db0 Now python files provided by extentions have init, start, stop and cleanup hooks
Edouard Tisserant
parents: 1011
diff changeset
   310
        self.python_runtime_vars = None
291
701c0601db02 Added systematic stdout.flush runtime side, so that results appear in log window
etisserant
parents: 290
diff changeset
   311
462
274e83a5534e Now debug is not a button anymore
Edouard TISSERANT <edouard.tisserant@gmail.com>
parents: 461
diff changeset
   312
    def PythonThreadProc(self):
798
0d2423f283a6 Fix bug segmentation fault while cleanup extensions
laurent
parents: 795
diff changeset
   313
        self.PLCStatus = "Started"
0d2423f283a6 Fix bug segmentation fault while cleanup extensions
laurent
parents: 795
diff changeset
   314
        self.StatusChange()
0d2423f283a6 Fix bug segmentation fault while cleanup extensions
laurent
parents: 795
diff changeset
   315
        self.StartSem.release()
1014
e2f7d6c95db0 Now python files provided by extentions have init, start, stop and cleanup hooks
Edouard Tisserant
parents: 1011
diff changeset
   316
        self.PythonRuntimeCall("start")
851
666f5bdad301 Added FBID variable to PY_EVAL evaluation context. FBID does identify uniquely py_eval block instance triggering execution
Edouard Tisserant
parents: 798
diff changeset
   317
        res,cmd,blkid = "None","None",ctypes.c_void_p()
867
06495975e8a4 Added caching for python eval (avoid compiling when same code called, but still execute). Cleaned up some evaluator related code.
Edouard Tisserant
parents: 851
diff changeset
   318
        compile_cache={}
798
0d2423f283a6 Fix bug segmentation fault while cleanup extensions
laurent
parents: 795
diff changeset
   319
        while True:
851
666f5bdad301 Added FBID variable to PY_EVAL evaluation context. FBID does identify uniquely py_eval block instance triggering execution
Edouard Tisserant
parents: 798
diff changeset
   320
            # print "_PythonIterator(", res, ")",
666f5bdad301 Added FBID variable to PY_EVAL evaluation context. FBID does identify uniquely py_eval block instance triggering execution
Edouard Tisserant
parents: 798
diff changeset
   321
            cmd = self._PythonIterator(res,blkid)
867
06495975e8a4 Added caching for python eval (avoid compiling when same code called, but still execute). Cleaned up some evaluator related code.
Edouard Tisserant
parents: 851
diff changeset
   322
            FBID = blkid.value 
851
666f5bdad301 Added FBID variable to PY_EVAL evaluation context. FBID does identify uniquely py_eval block instance triggering execution
Edouard Tisserant
parents: 798
diff changeset
   323
            # print " -> ", cmd, blkid
798
0d2423f283a6 Fix bug segmentation fault while cleanup extensions
laurent
parents: 795
diff changeset
   324
            if cmd is None:
0d2423f283a6 Fix bug segmentation fault while cleanup extensions
laurent
parents: 795
diff changeset
   325
                break
0d2423f283a6 Fix bug segmentation fault while cleanup extensions
laurent
parents: 795
diff changeset
   326
            try :
1014
e2f7d6c95db0 Now python files provided by extentions have init, start, stop and cleanup hooks
Edouard Tisserant
parents: 1011
diff changeset
   327
                self.python_runtime_vars["FBID"]=FBID
867
06495975e8a4 Added caching for python eval (avoid compiling when same code called, but still execute). Cleaned up some evaluator related code.
Edouard Tisserant
parents: 851
diff changeset
   328
                ccmd,AST =compile_cache.get(FBID, (None,None))
06495975e8a4 Added caching for python eval (avoid compiling when same code called, but still execute). Cleaned up some evaluator related code.
Edouard Tisserant
parents: 851
diff changeset
   329
                if ccmd is None or ccmd!=cmd:
06495975e8a4 Added caching for python eval (avoid compiling when same code called, but still execute). Cleaned up some evaluator related code.
Edouard Tisserant
parents: 851
diff changeset
   330
                    AST = compile(cmd, '<plc>', 'eval')
06495975e8a4 Added caching for python eval (avoid compiling when same code called, but still execute). Cleaned up some evaluator related code.
Edouard Tisserant
parents: 851
diff changeset
   331
                    compile_cache[FBID]=(cmd,AST)
1288
adc79fc44079 Fixed two typos in py_ext : FBID was not current but previous py_eval block FBID, and compiled AST cache was filled buy never used.
Edouard Tisserant
parents: 1156
diff changeset
   332
                result,exp = self.evaluator(eval,AST,self.python_runtime_vars)
867
06495975e8a4 Added caching for python eval (avoid compiling when same code called, but still execute). Cleaned up some evaluator related code.
Edouard Tisserant
parents: 851
diff changeset
   333
                if exp is not None: 
1052
fa7c5034c1d2 Better display of Python exceptions from Py_Eval
Edouard Tisserant
parents: 1051
diff changeset
   334
                    res = "#EXCEPTION : "+str(exp[1])
fa7c5034c1d2 Better display of Python exceptions from Py_Eval
Edouard Tisserant
parents: 1051
diff changeset
   335
                    self.LogMessage(1,('PyEval@0x%x(Code="%s") Exception "%s"')%(FBID,cmd,
fa7c5034c1d2 Better display of Python exceptions from Py_Eval
Edouard Tisserant
parents: 1051
diff changeset
   336
                        '\n'.join(traceback.format_exception(*exp))))
867
06495975e8a4 Added caching for python eval (avoid compiling when same code called, but still execute). Cleaned up some evaluator related code.
Edouard Tisserant
parents: 851
diff changeset
   337
                else:
06495975e8a4 Added caching for python eval (avoid compiling when same code called, but still execute). Cleaned up some evaluator related code.
Edouard Tisserant
parents: 851
diff changeset
   338
                    res=str(result)
1014
e2f7d6c95db0 Now python files provided by extentions have init, start, stop and cleanup hooks
Edouard Tisserant
parents: 1011
diff changeset
   339
                self.python_runtime_vars["FBID"]=None
798
0d2423f283a6 Fix bug segmentation fault while cleanup extensions
laurent
parents: 795
diff changeset
   340
            except Exception,e:
0d2423f283a6 Fix bug segmentation fault while cleanup extensions
laurent
parents: 795
diff changeset
   341
                res = "#EXCEPTION : "+str(e)
972
659198075ce4 Redirect PyEval exceptions to logging
Edouard Tisserant
parents: 971
diff changeset
   342
                self.LogMessage(1,('PyEval@0x%x(Code="%s") Exception "%s"')%(FBID,cmd,str(e)))
798
0d2423f283a6 Fix bug segmentation fault while cleanup extensions
laurent
parents: 795
diff changeset
   343
        self.PLCStatus = "Stopped"
0d2423f283a6 Fix bug segmentation fault while cleanup extensions
laurent
parents: 795
diff changeset
   344
        self.StatusChange()
1014
e2f7d6c95db0 Now python files provided by extentions have init, start, stop and cleanup hooks
Edouard Tisserant
parents: 1011
diff changeset
   345
        self.PythonRuntimeCall("stop")
350
a3a5561bde1d - now call load, start, free PLC from the python Thread
greg
parents: 344
diff changeset
   346
    
462
274e83a5534e Now debug is not a button anymore
Edouard TISSERANT <edouard.tisserant@gmail.com>
parents: 461
diff changeset
   347
    def StartPLC(self):
465
67d32a91d70b Fixes in debug + reconnect to running PLC
Edouard TISSERANT <edouard.tisserant@gmail.com>
parents: 462
diff changeset
   348
        if self.CurrentPLCFilename is not None and self.PLCStatus == "Stopped":
798
0d2423f283a6 Fix bug segmentation fault while cleanup extensions
laurent
parents: 795
diff changeset
   349
            c_argv = ctypes.c_char_p * len(self.argv)
0d2423f283a6 Fix bug segmentation fault while cleanup extensions
laurent
parents: 795
diff changeset
   350
            error = None
906
de452d65865c Python runtime now dlopens shared library immediatly after transfer, and release it only immediately before reloading a new one. This is probably going to reveal lot of dirty cleanups during start/stop cycles.
Edouard Tisserant
parents: 868
diff changeset
   351
            res = self._startPLC(len(self.argv),c_argv(*self.argv))
de452d65865c Python runtime now dlopens shared library immediatly after transfer, and release it only immediately before reloading a new one. This is probably going to reveal lot of dirty cleanups during start/stop cycles.
Edouard Tisserant
parents: 868
diff changeset
   352
            if res == 0:
de452d65865c Python runtime now dlopens shared library immediatly after transfer, and release it only immediately before reloading a new one. This is probably going to reveal lot of dirty cleanups during start/stop cycles.
Edouard Tisserant
parents: 868
diff changeset
   353
                self.StartSem=Semaphore(0)
de452d65865c Python runtime now dlopens shared library immediatly after transfer, and release it only immediately before reloading a new one. This is probably going to reveal lot of dirty cleanups during start/stop cycles.
Edouard Tisserant
parents: 868
diff changeset
   354
                self.PythonThread = Thread(target=self.PythonThreadProc)
de452d65865c Python runtime now dlopens shared library immediatly after transfer, and release it only immediately before reloading a new one. This is probably going to reveal lot of dirty cleanups during start/stop cycles.
Edouard Tisserant
parents: 868
diff changeset
   355
                self.PythonThread.start()
de452d65865c Python runtime now dlopens shared library immediatly after transfer, and release it only immediately before reloading a new one. This is probably going to reveal lot of dirty cleanups during start/stop cycles.
Edouard Tisserant
parents: 868
diff changeset
   356
                self.StartSem.acquire()
917
401e44bae7c0 Now logging have 4 levels
Edouard Tisserant
parents: 914
diff changeset
   357
                self.LogMessage("PLC started")
798
0d2423f283a6 Fix bug segmentation fault while cleanup extensions
laurent
parents: 795
diff changeset
   358
            else:
972
659198075ce4 Redirect PyEval exceptions to logging
Edouard Tisserant
parents: 971
diff changeset
   359
                self.LogMessage(0,_("Problem starting PLC : error %d" % res))
798
0d2423f283a6 Fix bug segmentation fault while cleanup extensions
laurent
parents: 795
diff changeset
   360
                self.PLCStatus = "Broken"
0d2423f283a6 Fix bug segmentation fault while cleanup extensions
laurent
parents: 795
diff changeset
   361
                self.StatusChange()
352
81777d4e379c fixed bug : Lock _FreePLC until _stopPLC finish
greg
parents: 350
diff changeset
   362
            
229
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   363
    def StopPLC(self):
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   364
        if self.PLCStatus == "Started":
917
401e44bae7c0 Now logging have 4 levels
Edouard Tisserant
parents: 914
diff changeset
   365
            self.LogMessage("PLC stopped")
352
81777d4e379c fixed bug : Lock _FreePLC until _stopPLC finish
greg
parents: 350
diff changeset
   366
            self._stopPLC()
798
0d2423f283a6 Fix bug segmentation fault while cleanup extensions
laurent
parents: 795
diff changeset
   367
            self.PythonThread.join()
229
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   368
            return True
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   369
        return False
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   370
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   371
    def _Reload(self):
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   372
        self.daemon.shutdown(True)
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   373
        self.daemon.sock.close()
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   374
        os.execv(sys.executable,[sys.executable]+sys.argv[:])
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   375
        # never reached
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   376
        return 0
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   377
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   378
    def ForceReload(self):
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   379
        # respawn python interpreter
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   380
        Timer(0.1,self._Reload).start()
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   381
        return True
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   382
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   383
    def GetPLCstatus(self):
917
401e44bae7c0 Now logging have 4 levels
Edouard Tisserant
parents: 914
diff changeset
   384
        return self.PLCStatus, map(self.GetLogCount,xrange(LogLevelsCount))
229
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   385
    
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   386
    def NewPLC(self, md5sum, data, extrafiles):
393
af20e07e53c5 Remove dirtylibs test while freeing plc libs in PLCObject.py
laurent
parents: 368
diff changeset
   387
        if self.PLCStatus in ["Stopped", "Empty", "Broken"]:
229
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   388
            NewFileName = md5sum + lib_ext
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   389
            extra_files_log = os.path.join(self.workingdir,"extra_files.txt")
906
de452d65865c Python runtime now dlopens shared library immediatly after transfer, and release it only immediately before reloading a new one. This is probably going to reveal lot of dirty cleanups during start/stop cycles.
Edouard Tisserant
parents: 868
diff changeset
   390
1045
a220a27defe5 Runtime now unloads and cleanup PLC before exit (created threads was preventing exit)
Edouard Tisserant
parents: 1035
diff changeset
   391
            self.UnLoadPLC()
a220a27defe5 Runtime now unloads and cleanup PLC before exit (created threads was preventing exit)
Edouard Tisserant
parents: 1035
diff changeset
   392
1011
388777d307de Fixed bug when transferring New PLC to a non-empty pyro connector
Laurent Bessard
parents: 972
diff changeset
   393
            self.LogMessage("NewPLC (%s)"%md5sum)
906
de452d65865c Python runtime now dlopens shared library immediatly after transfer, and release it only immediately before reloading a new one. This is probably going to reveal lot of dirty cleanups during start/stop cycles.
Edouard Tisserant
parents: 868
diff changeset
   394
            self.PLCStatus = "Empty"
de452d65865c Python runtime now dlopens shared library immediatly after transfer, and release it only immediately before reloading a new one. This is probably going to reveal lot of dirty cleanups during start/stop cycles.
Edouard Tisserant
parents: 868
diff changeset
   395
229
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   396
            try:
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   397
                os.remove(os.path.join(self.workingdir,
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   398
                                       self.CurrentPLCFilename))
364
27ea6a6747fc Bug extra_files deletion in working directory fixed
laurent
parents: 361
diff changeset
   399
                for filename in file(extra_files_log, "r").readlines() + [extra_files_log]:
229
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   400
                    try:
364
27ea6a6747fc Bug extra_files deletion in working directory fixed
laurent
parents: 361
diff changeset
   401
                        os.remove(os.path.join(self.workingdir, filename.strip()))
229
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   402
                    except:
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   403
                        pass
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   404
            except:
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   405
                pass
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   406
                        
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   407
            try:
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   408
                # Create new PLC file
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   409
                open(os.path.join(self.workingdir,NewFileName),
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   410
                     'wb').write(data)
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   411
        
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   412
                # Store new PLC filename based on md5 key
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   413
                open(self._GetMD5FileName(), "w").write(md5sum)
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   414
        
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   415
                # Then write the files
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   416
                log = file(extra_files_log, "w")
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   417
                for fname,fdata in extrafiles:
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   418
                    fpath = os.path.join(self.workingdir,fname)
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   419
                    open(fpath, "wb").write(fdata)
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   420
                    log.write(fname+'\n')
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   421
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   422
                # Store new PLC filename
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   423
                self.CurrentPLCFilename = NewFileName
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   424
            except:
906
de452d65865c Python runtime now dlopens shared library immediatly after transfer, and release it only immediately before reloading a new one. This is probably going to reveal lot of dirty cleanups during start/stop cycles.
Edouard Tisserant
parents: 868
diff changeset
   425
                self.PLCStatus = "Broken"
de452d65865c Python runtime now dlopens shared library immediatly after transfer, and release it only immediately before reloading a new one. This is probably going to reveal lot of dirty cleanups during start/stop cycles.
Edouard Tisserant
parents: 868
diff changeset
   426
                self.StatusChange()
291
701c0601db02 Added systematic stdout.flush runtime side, so that results appear in log window
etisserant
parents: 290
diff changeset
   427
                PLCprint(traceback.format_exc())
229
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   428
                return False
906
de452d65865c Python runtime now dlopens shared library immediatly after transfer, and release it only immediately before reloading a new one. This is probably going to reveal lot of dirty cleanups during start/stop cycles.
Edouard Tisserant
parents: 868
diff changeset
   429
1027
4e44c2c3e081 Fixed bug when starting Beremiz_runtime.py non empty (-a)
Edouard Tisserant
parents: 1014
diff changeset
   430
            if self.LoadPLC():
229
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   431
                self.PLCStatus = "Stopped"
906
de452d65865c Python runtime now dlopens shared library immediatly after transfer, and release it only immediately before reloading a new one. This is probably going to reveal lot of dirty cleanups during start/stop cycles.
Edouard Tisserant
parents: 868
diff changeset
   432
            else:
1035
0f905e027d18 Better mdns resolution failure signaling, added fixed bug whith runtime autostart
Edouard Tisserant
parents: 1027
diff changeset
   433
                self.PLCStatus = "Broken"
906
de452d65865c Python runtime now dlopens shared library immediatly after transfer, and release it only immediately before reloading a new one. This is probably going to reveal lot of dirty cleanups during start/stop cycles.
Edouard Tisserant
parents: 868
diff changeset
   434
                self._FreePLC()
de452d65865c Python runtime now dlopens shared library immediatly after transfer, and release it only immediately before reloading a new one. This is probably going to reveal lot of dirty cleanups during start/stop cycles.
Edouard Tisserant
parents: 868
diff changeset
   435
            self.StatusChange()
de452d65865c Python runtime now dlopens shared library immediatly after transfer, and release it only immediately before reloading a new one. This is probably going to reveal lot of dirty cleanups during start/stop cycles.
Edouard Tisserant
parents: 868
diff changeset
   436
de452d65865c Python runtime now dlopens shared library immediatly after transfer, and release it only immediately before reloading a new one. This is probably going to reveal lot of dirty cleanups during start/stop cycles.
Edouard Tisserant
parents: 868
diff changeset
   437
            return self.PLCStatus == "Stopped"
229
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   438
        return False
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   439
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   440
    def MatchMD5(self, MD5):
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   441
        try:
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   442
            last_md5 = open(self._GetMD5FileName(), "r").read()
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   443
            return last_md5 == MD5
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   444
        except:
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   445
            return False
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   446
    
477
f66a092b6e74 Arbitrary variable forcing
Edouard TISSERANT <edouard.tisserant@gmail.com>
parents: 467
diff changeset
   447
592
c6408f92da0a Initial TIME support in debugger
Edouard Tisserant
parents: 504
diff changeset
   448
    
229
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   449
    def SetTraceVariablesList(self, idxs):
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   450
        """
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   451
        Call ctype imported function to append 
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   452
        these indexes to registred variables in PLC debugger
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   453
        """
462
274e83a5534e Now debug is not a button anymore
Edouard TISSERANT <edouard.tisserant@gmail.com>
parents: 461
diff changeset
   454
        if idxs:
274e83a5534e Now debug is not a button anymore
Edouard TISSERANT <edouard.tisserant@gmail.com>
parents: 461
diff changeset
   455
            # suspend but dont disable
614
eed1dcf311a1 added return type to suspendDebug
Edouard Tisserant
parents: 593
diff changeset
   456
            if self._suspendDebug(False) == 0:
eed1dcf311a1 added return type to suspendDebug
Edouard Tisserant
parents: 593
diff changeset
   457
                # keep a copy of requested idx
eed1dcf311a1 added return type to suspendDebug
Edouard Tisserant
parents: 593
diff changeset
   458
                self._Idxs = idxs[:]
eed1dcf311a1 added return type to suspendDebug
Edouard Tisserant
parents: 593
diff changeset
   459
                self._ResetDebugVariables()
eed1dcf311a1 added return type to suspendDebug
Edouard Tisserant
parents: 593
diff changeset
   460
                for idx,iectype,force in idxs:
eed1dcf311a1 added return type to suspendDebug
Edouard Tisserant
parents: 593
diff changeset
   461
                    if force !=None:
eed1dcf311a1 added return type to suspendDebug
Edouard Tisserant
parents: 593
diff changeset
   462
                        c_type,unpack_func, pack_func = \
eed1dcf311a1 added return type to suspendDebug
Edouard Tisserant
parents: 593
diff changeset
   463
                            TypeTranslator.get(iectype,
eed1dcf311a1 added return type to suspendDebug
Edouard Tisserant
parents: 593
diff changeset
   464
                                                    (None,None,None))
eed1dcf311a1 added return type to suspendDebug
Edouard Tisserant
parents: 593
diff changeset
   465
                        force = ctypes.byref(pack_func(c_type,force)) 
eed1dcf311a1 added return type to suspendDebug
Edouard Tisserant
parents: 593
diff changeset
   466
                    self._RegisterDebugVariable(idx, force)
eed1dcf311a1 added return type to suspendDebug
Edouard Tisserant
parents: 593
diff changeset
   467
                self._resumeDebug()
462
274e83a5534e Now debug is not a button anymore
Edouard TISSERANT <edouard.tisserant@gmail.com>
parents: 461
diff changeset
   468
        else:
274e83a5534e Now debug is not a button anymore
Edouard TISSERANT <edouard.tisserant@gmail.com>
parents: 461
diff changeset
   469
            self._suspendDebug(True)
274e83a5534e Now debug is not a button anymore
Edouard TISSERANT <edouard.tisserant@gmail.com>
parents: 461
diff changeset
   470
            self._Idxs =  []
280
f2ef79f3dba0 Added native (not a plugin) asynchronous python eval function block - Beta. Code cleanup in C code templates.
etisserant
parents: 269
diff changeset
   471
229
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   472
    def GetTraceVariables(self):
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   473
        """
339
6dbde4a0c31d Adding support for updating PLC status when stopping
greg
parents: 336
diff changeset
   474
        Return a list of variables, corresponding to the list of required idx
229
8bc65076e290 add tests for win32
greg
parents: 227
diff changeset
   475
        """
286
a2a8a52b0d4f Minor changes to get better cleanup of debug and python_eval threads, accross multiple debug sessions and PLC runs.
etisserant
parents: 283
diff changeset
   476
        if self.PLCStatus == "Started":
450
18583d13f0fa Preliminary accessor support for debug
Edouard TISSERANT <edouard.tisserant@gmail.com>
parents: 446
diff changeset
   477
            tick = ctypes.c_uint32()
18583d13f0fa Preliminary accessor support for debug
Edouard TISSERANT <edouard.tisserant@gmail.com>
parents: 446
diff changeset
   478
            size = ctypes.c_uint32()
1075
8078c01ae464 Now Debug Buffer Unpacking is a separate function, declared in typemapping.py
Edouard Tisserant
parents: 1074
diff changeset
   479
            buff = ctypes.c_void_p()
8078c01ae464 Now Debug Buffer Unpacking is a separate function, declared in typemapping.py
Edouard Tisserant
parents: 1074
diff changeset
   480
            TraceVariables = None
795
afcc13faecd5 Fix bug debugger unable to restart after stopping PLC
laurent
parents: 734
diff changeset
   481
            if self.PLClibraryLock.acquire(False):
afcc13faecd5 Fix bug debugger unable to restart after stopping PLC
laurent
parents: 734
diff changeset
   482
                if self._GetDebugData(ctypes.byref(tick),
afcc13faecd5 Fix bug debugger unable to restart after stopping PLC
laurent
parents: 734
diff changeset
   483
                                      ctypes.byref(size),
1075
8078c01ae464 Now Debug Buffer Unpacking is a separate function, declared in typemapping.py
Edouard Tisserant
parents: 1074
diff changeset
   484
                                      ctypes.byref(buff)) == 0:
795
afcc13faecd5 Fix bug debugger unable to restart after stopping PLC
laurent
parents: 734
diff changeset
   485
                    if size.value:
1075
8078c01ae464 Now Debug Buffer Unpacking is a separate function, declared in typemapping.py
Edouard Tisserant
parents: 1074
diff changeset
   486
                        TraceVariables = UnpackDebugBuffer(buff, size.value, self._Idxs)
795
afcc13faecd5 Fix bug debugger unable to restart after stopping PLC
laurent
parents: 734
diff changeset
   487
                    self._FreeDebugData()
483
bc26c42d2eec fixed greg's crap in win32, enhanced debug stability, implemented preliminary retain
edouard
parents: 479
diff changeset
   488
                self.PLClibraryLock.release()
1075
8078c01ae464 Now Debug Buffer Unpacking is a separate function, declared in typemapping.py
Edouard Tisserant
parents: 1074
diff changeset
   489
            if TraceVariables is not None:
8078c01ae464 Now Debug Buffer Unpacking is a separate function, declared in typemapping.py
Edouard Tisserant
parents: 1074
diff changeset
   490
                return self.PLCStatus, tick.value, TraceVariables
917
401e44bae7c0 Now logging have 4 levels
Edouard Tisserant
parents: 914
diff changeset
   491
        return self.PLCStatus, None, []
592
c6408f92da0a Initial TIME support in debugger
Edouard Tisserant
parents: 504
diff changeset
   492
699
6ff64cadb1ff Adding support for executing python scripts on remote runtime
laurent
parents: 690
diff changeset
   493
    def RemoteExec(self, script, **kwargs):
6ff64cadb1ff Adding support for executing python scripts on remote runtime
laurent
parents: 690
diff changeset
   494
        try:
6ff64cadb1ff Adding support for executing python scripts on remote runtime
laurent
parents: 690
diff changeset
   495
            exec script in kwargs
6ff64cadb1ff Adding support for executing python scripts on remote runtime
laurent
parents: 690
diff changeset
   496
        except:
6ff64cadb1ff Adding support for executing python scripts on remote runtime
laurent
parents: 690
diff changeset
   497
            e_type, e_value, e_traceback = sys.exc_info()
6ff64cadb1ff Adding support for executing python scripts on remote runtime
laurent
parents: 690
diff changeset
   498
            line_no = traceback.tb_lineno(get_last_traceback(e_traceback))
6ff64cadb1ff Adding support for executing python scripts on remote runtime
laurent
parents: 690
diff changeset
   499
            return (-1, "RemoteExec script failed!\n\nLine %d: %s\n\t%s" % 
6ff64cadb1ff Adding support for executing python scripts on remote runtime
laurent
parents: 690
diff changeset
   500
                        (line_no, e_value, script.splitlines()[line_no - 1]))
6ff64cadb1ff Adding support for executing python scripts on remote runtime
laurent
parents: 690
diff changeset
   501
        return (0, kwargs.get("returnVal", None))
6ff64cadb1ff Adding support for executing python scripts on remote runtime
laurent
parents: 690
diff changeset
   502
    
6ff64cadb1ff Adding support for executing python scripts on remote runtime
laurent
parents: 690
diff changeset
   503