# -*- coding: iso-8859-1 -*-
-# Copyright (C) 2007-2022 CEA/DEN, EDF R&D, OPEN CASCADE
+# Copyright (C) 2007-2023 CEA, EDF, OPEN CASCADE
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
def sendPart(self,n1,n2):
return self.bytesToSend[n1:n2]
+
+SALOME_FILE_BIG_OBJ_DIR = "SALOME_FILE_BIG_OBJ_DIR"
+
+SALOME_BIG_OBJ_ON_DISK_THRES_VAR = "SALOME_BIG_OBJ_ON_DISK_THRES"
+
+# default is 50 MB
+SALOME_BIG_OBJ_ON_DISK_THRES_DFT = 50000000
+
+from ctypes import c_int
+TypeCounter = c_int
+
+def GetSizeOfTCnt():
+ return len( bytes(TypeCounter(0) ) )
+
+def GetObjectFromFile(fname):
+ with open(fname,"rb") as f:
+ cntb = f.read( GetSizeOfTCnt() )
+ cnt = TypeCounter.from_buffer_copy( cntb ).value
+ obj = pickle.load(f)
+ return obj,cnt
+
+def DumpInFile(obj,fname):
+ with open(fname,"wb") as f:
+ f.write( bytes( TypeCounter(1) ) )
+ f.write( obj )
+
+def IncrRefInFile(fname):
+ with open(fname,"rb") as f:
+ cntb = f.read( GetSizeOfTCnt() )
+ cnt = TypeCounter.from_buffer_copy( cntb ).value
+ with open(fname,"rb+") as f:
+ f.write( bytes( TypeCounter(cnt+1) ) )
+
+def DecrRefInFile(fname):
+ import os
+ with open(fname,"rb") as f:
+ cntb = f.read( GetSizeOfTCnt() )
+ cnt = TypeCounter.from_buffer_copy( cntb ).value
+ #
+ if cnt == 1:
+ os.unlink( fname )
+ else:
+ with open(fname,"rb+") as f:
+ f.write( bytes( TypeCounter(cnt-1) ) )
+
+def GetBigObjectOnDiskThreshold():
+ import os
+ if SALOME_BIG_OBJ_ON_DISK_THRES_VAR in os.environ:
+ return int( os.environ[SALOME_BIG_OBJ_ON_DISK_THRES_VAR] )
+ else:
+ return SALOME_BIG_OBJ_ON_DISK_THRES_DFT
+
+def GetBigObjectDirectory():
+ import os
+ if SALOME_FILE_BIG_OBJ_DIR not in os.environ:
+ raise RuntimeError("An object of size higher than limit detected and no directory specified to dump it in file !")
+ return os.path.expanduser( os.path.expandvars( os.environ[SALOME_FILE_BIG_OBJ_DIR] ) )
+
+def GetBigObjectFileName():
+ """
+ Return a filename in the most secure manner (see tempfile documentation)
+ """
+ import tempfile
+ with tempfile.NamedTemporaryFile(dir=GetBigObjectDirectory(),prefix="mem_",suffix=".pckl") as f:
+ ret = f.name
+ return ret
+
+class BigObjectOnDiskBase:
+ def __init__(self, fileName, objSerialized):
+ """
+ :param fileName: the file used to dump into.
+ :param objSerialized: the object in pickeled form
+ :type objSerialized: bytes
+ """
+ self._filename = fileName
+ # attribute _destroy is here to tell client side or server side
+ # only client side can be with _destroy set to True. server side due to risk of concurrency
+ # so pickled form of self must be done with this attribute set to False.
+ self._destroy = False
+ self.__dumpIntoFile(objSerialized)
+
+ def getDestroyStatus(self):
+ return self._destroy
+
+ def incrRef(self):
+ if self._destroy:
+ IncrRefInFile( self._filename )
+ else:
+ # should never happen !
+ RuntimeError("Invalid call to incrRef !")
+
+ def decrRef(self):
+ if self._destroy:
+ DecrRefInFile( self._filename )
+ else:
+ # should never happen !
+ RuntimeError("Invalid call to decrRef !")
+
+ def unlinkOnDestructor(self):
+ self._destroy = True
+
+ def doNotTouchFile(self):
+ """
+ Method called slave side. The life cycle management of file is client side not slave side.
+ """
+ self._destroy = False
+
+ def __del__(self):
+ if self._destroy:
+ DecrRefInFile( self._filename )
+
+ def getFileName(self):
+ return self._filename
+
+ def __dumpIntoFile(self, objSerialized):
+ DumpInFile( objSerialized, self._filename )
+
+ def get(self):
+ obj, _ = GetObjectFromFile( self._filename )
+ return obj
+
+ def __float__(self):
+ return float( self.get() )
+
+ def __int__(self):
+ return int( self.get() )
+
+ def __str__(self):
+ obj = self.get()
+ if isinstance(obj,str):
+ return obj
+ else:
+ raise RuntimeError("Not a string")
+
+class BigObjectOnDisk(BigObjectOnDiskBase):
+ def __init__(self, fileName, objSerialized):
+ BigObjectOnDiskBase.__init__(self, fileName, objSerialized)
+
+class BigObjectOnDiskListElement(BigObjectOnDiskBase):
+ def __init__(self, pos, length, fileName):
+ self._filename = fileName
+ self._destroy = False
+ self._pos = pos
+ self._length = length
+
+ def get(self):
+ fullObj = BigObjectOnDiskBase.get(self)
+ return fullObj[ self._pos ]
+
+ def __getitem__(self, i):
+ return self.get()[i]
+
+ def __len__(self):
+ return len(self.get())
+
+class BigObjectOnDiskSequence(BigObjectOnDiskBase):
+ def __init__(self, length, fileName, objSerialized):
+ BigObjectOnDiskBase.__init__(self, fileName, objSerialized)
+ self._length = length
+
+ def __getitem__(self, i):
+ return BigObjectOnDiskListElement(i, self._length, self.getFileName())
+
+ def __len__(self):
+ return self._length
+
+class BigObjectOnDiskList(BigObjectOnDiskSequence):
+ def __init__(self, length, fileName, objSerialized):
+ BigObjectOnDiskSequence.__init__(self, length, fileName, objSerialized)
+
+class BigObjectOnDiskTuple(BigObjectOnDiskSequence):
+ def __init__(self, length, fileName, objSerialized):
+ BigObjectOnDiskSequence.__init__(self, length, fileName, objSerialized)
+
+def SpoolPickleObject( obj ):
+ import pickle
+ pickleObjInit = pickle.dumps( obj , pickle.HIGHEST_PROTOCOL )
+ if len(pickleObjInit) < GetBigObjectOnDiskThreshold():
+ return pickleObjInit
+ else:
+ if isinstance( obj, list):
+ proxyObj = BigObjectOnDiskList( len(obj), GetBigObjectFileName() , pickleObjInit )
+ elif isinstance( obj, tuple):
+ proxyObj = BigObjectOnDiskTuple( len(obj), GetBigObjectFileName() , pickleObjInit )
+ else:
+ proxyObj = BigObjectOnDisk( GetBigObjectFileName() , pickleObjInit )
+ pickleProxy = pickle.dumps( proxyObj , pickle.HIGHEST_PROTOCOL )
+ return pickleProxy
+
+def UnProxyObjectSimple( obj ):
+ """
+ Method to be called in Remote mode. Alterate the obj _status attribute.
+ Because the slave process does not participate in the reference counting
+ """
+ if isinstance(obj,BigObjectOnDiskBase):
+ obj.doNotTouchFile()
+ return obj.get()
+ elif isinstance( obj, list):
+ retObj = []
+ for elt in obj:
+ retObj.append( UnProxyObjectSimple(elt) )
+ return retObj
+ else:
+ return obj
+
+def UnProxyObjectSimpleLocal( obj ):
+ """
+ Method to be called in Local mode. Do not alterate the PyObj counter
+ """
+ if isinstance(obj,BigObjectOnDiskBase):
+ return obj.get()
+ elif isinstance( obj, list):
+ retObj = []
+ for elt in obj:
+ retObj.append( UnProxyObjectSimpleLocal(elt) )
+ return retObj
+ else:
+ return obj
class SeqByteReceiver:
+ # 2GB limit to trigger split into chunks
CHUNK_SIZE = 2000000000
def __init__(self,sender):
self._obj = sender
def fetchOneShot(self,size):
return self._obj.sendPart(0,size)
def fetchByChunks(self,size):
+ """
+ To avoid memory peak parts over 2GB are sent using EFF_CHUNK_SIZE size.
+ """
data_for_split_case = bytes(0)
EFF_CHUNK_SIZE = SeqByteReceiver.CHUNK_SIZE // 8
iStart = 0 ; iEnd = EFF_CHUNK_SIZE
argsInPy = SeqByteReceiver( argsin )
data = argsInPy.data()
_,kws=pickle.loads(data)
+ for elt in kws:
+ # fetch real data if necessary
+ kws[elt] = UnProxyObjectSimple( kws[elt] )
self.context.update(kws)
except Exception:
exc_typ,exc_val,exc_fr=sys.exc_info()
if arg not in self.context:
raise KeyError("There is no variable %s in context" % arg)
argsout.append(self.context[arg])
- argsout=pickle.dumps(tuple(argsout),-1)
- ret = SenderByte_i( self.poa,argsout )
- id_o = self.poa.activate_object(ret)
- retObj = self.poa.id_to_reference(id_o)
- return retObj._narrow( SALOME.SenderByte )
+ ret = [ ]
+ for arg in argsout:
+ # the proxy mecanism is catched here
+ argPickle = SpoolPickleObject( arg )
+ retArg = SenderByte_i( self.poa,argPickle )
+ id_o = self.poa.activate_object(retArg)
+ retObj = self.poa.id_to_reference(id_o)
+ ret.append( retObj._narrow( SALOME.SenderByte ) )
+ return ret
except Exception:
exc_typ,exc_val,exc_fr=sys.exc_info()
l=traceback.format_exception(exc_typ,exc_val,exc_fr)
raise SALOME.SALOME_Exception(SALOME.ExceptionStruct(SALOME.BAD_PARAM,"".join(l),"PyScriptNode:Second %s, outargsname: %s" % (self.nodeName,outargsname),0))
+ def listAllVarsInContext(self):
+ import re
+ pat = re.compile("^__([a-z]+)__$")
+ return [elt for elt in self.context if not pat.match(elt)]
+
+ def removeAllVarsInContext(self):
+ for elt in self.listAllVarsInContext():
+ del self.context[elt]
+
def getValueOfVarInContext(self,varName):
try:
return pickle.dumps(self.context[varName],-1)
