From eb706bf094cb94104536cd1bb827828db672df5d Mon Sep 17 00:00:00 2001
From: Samo Penic <samo.penic@gmail.com>
Date: Sat, 09 Jul 2016 10:38:18 +0000
Subject: [PATCH] Merged the difference

---
 python/trisurf/trisurf.py |  109 ++++++++++++++++++++++++++++++++++++++++++++----------
 1 files changed, 88 insertions(+), 21 deletions(-)

diff --git a/python/trisurf/trisurf.py b/python/trisurf/trisurf.py
index 2f98e2c..c175301 100644
--- a/python/trisurf/trisurf.py
+++ b/python/trisurf/trisurf.py
@@ -1,10 +1,8 @@
-#!/usr/bin/python3
-
 import configobj
 import xml.etree.ElementTree as ET
 import base64
 import zlib
-import io
+import sys,io
 import os
 from itertools import islice
 import mmap
@@ -84,6 +82,9 @@
 		'''
 		try:
 			self.config=configobj.ConfigObj(tape)
+			with open (tape, "r") as myfile:
+				self.rawText=myfile.read() #read the file
+
 		except:
 			print("Error reading or parsing tape file!\n")
 			exit(1)
@@ -91,6 +92,7 @@
 	def setTape(self, string):
 		'''Method setTape(string) parses the string in memory that hold the tape contents.'''
 		self.config=configobj.ConfigObj(io.StringIO(string))
+		self.rawText=string
 		return
 
 	def getValue(self,key):
@@ -199,14 +201,51 @@
 		Internal method for determining the number of the lines in the most efficient way. Is it really the most efficient?
 		'''
 		f = open(self.fullname, "r+")
-		buf = mmap.mmap(f.fileno(), 0)
-		lines = 0
-		readline = buf.readline
-		while readline():
-			lines += 1
+		try:
+			buf = mmap.mmap(f.fileno(), 0)
+			lines = 0
+			readline = buf.readline
+			while readline():
+				lines += 1
+			f.close()
+		except:
+			lines=0
+			f.close()
 		return lines
 
+	def tail(self,filename,n=2):
+		with open(filename,'r') as myfile:
+			lines=myfile.readlines()
+		return [lines[len(lines)-2].replace('\n',''),lines[len(lines)-1].replace('\n','')]
+
 	def read(self):
+		try:
+			lines=self.tail(self.fullname)
+		except:
+			return(False)
+		if len(lines)<2:
+			return(False)
+		#print (line)
+		fields=shlex.split(lines[0])
+		epoch1=fields[0]
+		n1=fields[1]
+		
+		fields=shlex.split(lines[1])
+		epoch2=fields[0]
+		n2=fields[1]
+		try:
+			self.dT=int(epoch2)-int(epoch1)
+			self.last=n2
+			#print(epoch1)
+			#print(epoch2)
+			#print(self.dT)
+			#print(self.last)
+			self.startDate=os.path.getmtime(os.path.join(self.path,'.lock'))
+		except:
+			return(False)
+		return(True)
+
+	def read_old(self):
 		'''
 		Method read() reads the statistics if it exists. It sets local variable dT storing the time differential between two intervals of simulation (outer loops). It also stores last simulation loop and the start of the run.
 		'''
@@ -287,7 +326,7 @@
 		version=root.find('trisurfversion')
 		self.tape=Tape()
 		self.tape.setTape(tapetxt.text)
-		
+
 	def getPID(self):
 		self.Dir=Directory(maindir=self.maindir,simdir=self.subdir)
 		#self.Dir.makeifnotexist()
@@ -311,7 +350,7 @@
 		return int(status)
 
 	def isCompleted(self):
-		if (int(self.tape.getValue("iterations"))==self.getLastIteration()+1):
+		if int(self.tape.getValue("iterations"))+int(self.tape.getValue("inititer"))==self.getLastIteration()+1:
 			return True
 		else:
 			return False
@@ -324,8 +363,15 @@
 			return TS_NOLOCK
 		if(psutil.pid_exists(int(pid))):
 			proc= psutil.Process(int(pid))
-			if proc.name=="trisurf":
-				if proc.status=="stopped":
+			#psutil.__version__ == '3.4.2' requires name() and status(), some older versions reguire name, status
+			if(psutil.__version__>='2.0.0'):
+				procname=proc.name()
+				procstat=proc.status()
+			else:
+				procname=proc.name
+				procstat=proc.status
+			if procname=="trisurf":
+				if procstat=="stopped":
 					return TS_STOPPED
 				else:
 					return TS_RUNNING
@@ -352,26 +398,34 @@
 				else:
 					try:
 						with open (os.path.join(self.Dir.fullpath(),"tape"), "w") as myfile:
-							myfile.write("#This is automatically generated tape file from snapshot\n")
-							myfile.write(str(self.tape))
+							#myfile.write("#This is automatically generated tape file from snapshot")
+							myfile.write(str(self.tape.rawText))
 					except:
 						print("Error -- cannot make tapefile  "+ os.path.join(self.Dir.fullpath(),"tape")+" from the snapshot in the running directory")
 						exit(1)
 					try:
-						os.symlink(os.path.abspath(self.snapshotFile), os.path.join(self.Dir.fullpath(),self.snapshotFile))
+						os.symlink(os.path.abspath(self.snapshotFile), os.path.join(self.Dir.fullpath(),"initial_snapshot.vtu"))
 					except:
 						print("Error while symlinking "+os.path.abspath(self.snapshotFile)+" to "+os.path.join(self.Dir.fullpath(),self.snapshotFile))
 		
 			#check if the simulation has been completed. in this case notify user and stop executing.
 			if(self.isCompleted() and ("--force-from-tape" not in self.runArgs) and ("--reset-iteration-count" not in self.runArgs)):
-				print("The simulation was completed. Not starting executable at localhost in "+self.Dir.fullpath()+"\n")
+				print("The simulation was completed. Not starting executable in "+self.Dir.fullpath())
 				return
 
 			cwd=Directory(maindir=os.getcwd())
+			lastVTU=self.getLastVTU() #we get last VTU file in case we need to continue the simulation from last snapshot. Need to be done before the Dir.goto() call.
 			self.Dir.goto()
-			print("Starting trisurf-ng executable at localhost in "+self.Dir.fullpath()+"\n")
+			print("Starting trisurf-ng executable in "+self.Dir.fullpath())
 			if(self.fromSnapshot==True):
-				params=["trisurf", "--restore-from-vtk",self.snapshotFile]+self.runArgs
+				#here we try to determine whether we should continue the simulation or start from last known VTU snapshot.
+				if(lastVTU==None):
+					initSnap="initial_snapshot.vtu"
+				else:
+					initSnap=lastVTU
+					print("WARNING: Not using initial snapshot as starting point, but selecting "+initSnap+" as a starting vesicle")
+				params=["trisurf", "--restore-from-vtk",initSnap]+self.runArgs
+				print("InitSnap is: "+initSnap)
 			else:
 				#veify if dump exists. If not it is a first run and shoud be run with --force-from-tape
 				if(os.path.isfile("dump.bin")==False):
@@ -380,17 +434,17 @@
 			subprocess.Popen (params, stdout=subprocess.DEVNULL)
 			cwd.goto()
 		else:
-			print("Process already running. Not starting\n")
+			print("Process in "+self.Dir.fullpath()+" already running. Not starting.")
 		return
 
-	def stop(self):
-		pass
 
 	def setMaindir(self,prefix,variables):
 		maindir=""
 		for p,v in zip(prefix,variables):
 			if(v=="xk0"):
 				tv=str(round(float(self.tape.config[v])))
+				if sys.version_info<(3,0):
+					tv=str(int(float(self.tape.config[v])))
 			else:
 				tv=self.tape.config[v]
 			maindir=maindir+p+tv
@@ -429,11 +483,24 @@
 			report=["N/A","N/A",statustxt, pid, str(self.Dir.fullpath()), self.Comment.getText()]
 		return report
 
+
+	def stop(self):
+		p=psutil.Process(self.getPID())
+		p.kill()
+
 	def writeComment(self, data, mode='w'):
 		self.Dir=Directory(maindir=self.maindir,simdir=self.subdir)
 		self.Comment=FileContent(os.path.join(self.Dir.fullpath(),".comment"))
 		self.Comment.writefile(data,mode=mode)
 
+
+	def getLastVTU(self):
+		vtuidx=self.getLastIteration()-int(self.tape.getValue("inititer"))
+		if vtuidx<0:
+			return None
+		else:
+			return  'timestep_{:06d}.vtu'.format(vtuidx)
+
 	def __str__(self):
 		if(self.getStatus()==0):
 			str=" not running."

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