+ eoSignal: to handle signal with eoCheckpoint instances

eo/src/utils/CMakeLists.txt

@@ -29,6 +29,7 @@ SET(EOUTILS_SOURCES
   pipecom.cpp
   eoLogger.cpp
   eoParallel.cpp
+  eoSignal.cpp
   )
 
 ADD_LIBRARY(eoutils STATIC ${EOUTILS_SOURCES})

eo/src/utils/eoSignal.cpp

@@ -0,0 +1,36 @@
+// -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-
+
+/**
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2 of the License, or (at your option) any later version.
+
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+   Contact: http://eodev.sourceforge.net
+
+   Autors: todos@geneura.ugr.es, http://geneura.ugr.es
+	   Marc.Schoenauer@polytechnique.fr
+	   mak@dhi.dk
+	   Caner.Candan@univ-angers.fr
+*/
+
+#include <utils/eoSignal.h>
+
+/**
+ * @addtogroup Continuators
+ * @{
+ */
+
+// --- Global variables - but don't know what else to do - MS ---
+std::map< int, bool > signals_called;
+
+/** @} */

eo/src/utils/eoSignal.h

@@ -0,0 +1,96 @@
+// -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-
+
+/**
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2 of the License, or (at your option) any later version.
+
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+   Contact: http://eodev.sourceforge.net
+
+   Authors: todos@geneura.ugr.es, http://geneura.ugr.es
+	    Marc.Schoenauer@polytechnique.fr
+	    mak@dhi.dk
+	    Caner.Candan@univ-angers.fr
+*/
+
+#ifndef _eoSignal_h
+#define _eoSignal_h
+
+#include <csignal>
+#include <utils/eoCheckPoint.h>
+#include <utils/eoLogger.h>
+
+#include <map>
+#include <vector>
+
+/**
+ * @addtogroup Continuators
+ * @{
+ */
+
+extern std::map< int, bool > signals_called;
+
+/** eoSignal inherits from eoCheckPoint including signals handling (see signal(7))
+ *
+ * @ingroup Utilities
+ */
+template <class EOT>
+class eoSignal : public eoCheckPoint<EOT>
+{
+public :
+
+    eoSignal( int sig = SIGINT ) : eoCheckPoint<EOT>( _dummyContinue ), _sig( sig )
+    {
+	::signals_called[_sig] = false;
+	::signal( _sig, handler );
+    }
+
+    eoSignal( eoContinue<EOT>& _cont, int sig = SIGINT ) : eoCheckPoint<EOT>( _cont ), _sig( sig )
+    {
+	::signals_called[_sig] = false;
+	::signal( _sig, handler );
+    }
+
+    bool operator()( const eoPop<EOT>& _pop )
+    {
+	bool& called = ::signals_called[_sig];
+	if ( called )
+	    {
+		eo::log << eo::logging << "Signal granted…" << std::endl ;
+		called = false;
+		return this->eoCheckPoint<EOT>::operator()( _pop );
+	    }
+	return true;
+    }
+
+    virtual std::string className(void) const { return "eoSignal"; }
+
+    static void handler( int sig )
+    {
+	::signals_called[sig] = true;
+	eo::log << eo::logging << "Signal wished…" << std::endl ;
+    }
+
+private:
+    class DummyContinue : public eoContinue<EOT>
+    {
+    public:
+	bool operator() ( const eoPop<EOT>& ) { return true; }
+    } _dummyContinue;
+
+    int _sig;
+};
+
+/** @} */
+
+#endif // !_eoSignal_h