evaluator that throw an exception if a maximum CPU user time has been reached, for POSIX systems

eo/NEWS

@@ -1,4 +1,7 @@
-* release 1.1 (not yet released)
+* current
+  - evaluators that throw an exception if a maximum time has en reached (wallclock and CPU user time for POSIX systems), independently of the number of generations
+
+* release 1.1
   - provide cmake build system, remove the old autotools one
   - package generation system
   - GCC 4.3 compatibility

eo/src/eo

@@ -77,6 +77,7 @@
 #include <eoEvalFuncPtr.h>
 #include <eoEvalCounterThrowException.h>
 #include <eoEvalTimeThrowException.h>
+#include <eoEvalUserTimeThrowException.h>
 
 // Continuators - all include eoContinue.h
 #include <eoCombinedContinue.h>

eo/src/eoEvalUserTimeThrowException.h

@@ -0,0 +1,61 @@
+/* 
+(c) Thales group, 2010
+
+    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;
+    version 2 of the License.
+
+    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: 
+Johann Dréo <johann.dreo@thalesgroup.com>
+*/
+
+#include <sys/time.h>
+#include <sys/resource.h>
+
+#include <eoExceptions.h>
+
+/** Check at each evaluation if a given CPU user time contract has been reached.
+ *
+ * Throw an eoMaxTimeException if the given max time has been reached.
+ * Usefull if you want to end the search independently of generations.
+ * This class uses (almost-)POSIX headers.
+ * It uses a computation of the user time used on the CPU. For a wallclock time measure, see eoEvalTimeThrowException
+ *
+ * @ingroup Evaluation
+ */
+template< class EOT >
+class eoEvalUserTimeThrowException : public eoEvalFuncCounter< EOT >
+{
+public:
+    eoEvalUserTimeThrowException( eoEvalFunc<EOT> & func, long max ) : _max(max), eoEvalFuncCounter<EOT>( func, "CPU-user") {}
+
+    virtual void operator() ( EOT & eo )
+    {
+        if( eo.invalid() ) {
+
+            getrusage(RUSAGE_SELF,&_usage);
+
+            if( _usage.ru_utime.tv_sec >= _max ) {
+                throw eoMaxTimeException( _usage.ru_utime.tv_sec );
+            } else {
+                func(eo);
+            }
+        }
+    }
+
+protected:
+    long _max;
+    struct rusage _usage;
+};