From 896c7f21f3008f3fd1abc5df5f75617e75e9a768 Mon Sep 17 00:00:00 2001
From: Thorsten Liebig <Thorsten.Liebig@gmx.de>
Date: Mon, 18 Oct 2010 13:26:25 +0200
Subject: [PATCH] openEMS: abort conditions added

---
 openems.cpp | 21 ++++++++++++++++++++-
 openems.h   |  7 +++++++
 2 files changed, 27 insertions(+), 1 deletion(-)

diff --git a/openems.cpp b/openems.cpp
index 8114858..0c37bf4 100644
--- a/openems.cpp
+++ b/openems.cpp
@@ -65,6 +65,8 @@ openEMS::openEMS()
 
 	m_engine = EngineType_Standard;
 	m_engine_numThreads = 0;
+
+	m_Abort = false;
 }
 
 openEMS::~openEMS()
@@ -551,6 +553,23 @@ string FormatTime(int sec)
 	return ss.str();
 }
 
+bool openEMS::CheckAbortCond()
+{
+	if (m_Abort) //abort was set externally
+		return true;
+
+	//check whether the file "ABORT" exist in current working directory
+	ifstream ifile("ABORT");
+	if (ifile)
+	{
+		ifile.close();
+		cerr << "openEMS::CheckAbortCond(): Found file \"ABORT\", aborting simulation..." << endl;
+		return true;
+	}
+
+	return false;
+}
+
 void openEMS::RunFDTD()
 {
 	cout << "Running FDTD engine... this may take a while... grab a cup of coffee?!?" << endl;
@@ -579,7 +598,7 @@ void openEMS::RunFDTD()
 
 	int step=PA->Process();
 	if ((step<0) || (step>(int)NrTS)) step=NrTS;
-	while ((FDTD_Eng->GetNumberOfTimesteps()<NrTS) && (change>endCrit))
+	while ((FDTD_Eng->GetNumberOfTimesteps()<NrTS) && (change>endCrit) && !CheckAbortCond())
 	{
 		FDTD_Eng->IterateTS(step);
 		step=PA->Process();
diff --git a/openems.h b/openems.h
index 53d0faf..bb89df4 100644
--- a/openems.h
+++ b/openems.h
@@ -51,6 +51,11 @@ public:
 	//! Get informations about external libs used by openEMS
 	static string GetExtLibsInfo();
 
+	//! Set this to about FDTD iteration process
+	void SetAbort(bool val) {m_Abort=val;}
+	//! Check for abort conditions
+	bool CheckAbortCond();
+
 protected:
 	bool CylinderCoords;
 
@@ -67,6 +72,8 @@ protected:
 	Engine* FDTD_Eng;
 	ProcessingArray* PA;
 
+	bool m_Abort;
+
 	enum EngineType {EngineType_Standard, EngineType_SSE, EngineType_SSE_Compressed, EngineType_Multithreaded};
 	EngineType m_engine;
 	unsigned int m_engine_numThreads;