add Logog Cout which allows one computing core (rank 0) to print the log

BaseLib/LogogCustomCout.h

+/**
+ * \copyright
+ * Copyright (c) 2012-2014, OpenGeoSys Community (http://www.opengeosys.org)
+ *            Distributed under a Modified BSD License.
+ *              See accompanying file LICENSE.txt or
+ *              http://www.opengeosys.org/project/license
+ *
+ */
+
+#ifndef LOGOGCUSTOMCOUT_H_
+#define LOGOGCUSTOMCOUT_H_
+
+#include "logog/include/logog.hpp"
+
+#ifdef USE_MPI
+#include <mpi.h>
+#endif
+
+namespace BaseLib
+{
+
+/// Custom target for logog output
+class LogogCustomCout : public logog::Target
+{
+public:
+#ifdef USE_MPI
+	LogogCustomCout(MPI_Comm mpi_comm)
+	{
+		MPI_Comm_rank(mpi_comm, &_mpi_rank);
+	}
+#endif
+
+	virtual int Output( const LOGOG_STRING &data )
+	{
+#ifdef USE_MPI
+		if (_mpi_rank == 0)
+#endif
+		LOGOG_COUT << (const LOGOG_CHAR *)data;
+		return 0;
+	}
+
+#ifdef USE_MPI
+	int _mpi_rank;
+#endif
+};
+
+#endif // LOGOGCUSTOMCOUT_H_
+
+} // namespace BaseLib

Tests/testrunner.cpp

@@ -16,6 +16,10 @@
 #include "gtest/gtest.h"
 #include "logog/include/logog.hpp"
 
+#ifdef USE_MPI
+#include <mpi.h>
+#endif
+
 #ifdef USE_LIS
 #include <lis.h>
 #endif
@@ -24,6 +28,7 @@
 #include <petscksp.h>
 #endif
 
+#include "BaseLib/LogogCustomCout.h"
 #include "BaseLib/TemplateLogogFormatterSuppressedGCC.h"
 #ifdef QT4_FOUND
 #include <QApplication>
@@ -33,12 +38,17 @@
 int main(int argc, char* argv[])
 {
 #ifdef QT4_FOUND
-	QApplication app(argc, argv, false);
+    QApplication app(argc, argv, false);
 #endif
     int ret = 0;
     LOGOG_INITIALIZE();
     {
-        logog::Cout out;
+#ifdef USE_MPI
+        MPI_Init(&argc, &argv);
+        BaseLib::LogogCustomCout out(MPI_COMM_WORLD);
+#else
+        BaseLib::LogogCustomCout out;
+#endif
         BaseLib::TemplateLogogFormatterSuppressedGCC<TOPIC_LEVEL_FLAG | TOPIC_FILE_NAME_FLAG | TOPIC_LINE_NUMBER_FLAG> custom_format;
         out.SetFormatter(custom_format);
 
@@ -78,6 +88,10 @@ int main(int argc, char* argv[])
         PetscFinalize();
 #endif
 
+#ifdef USE_MPI
+        MPI_Finalize();
+#endif
+
     } // make sure no logog objects exist when LOGOG_SHUTDOWN() is called.
     LOGOG_SHUTDOWN();