add engine base

src/engine.cc

@@ -17,11 +17,15 @@
 namespace rabit {
 namespace engine {
 // singleton sync manager
+#ifndef RABIT_USE_BASE
 #ifndef RABIT_USE_MOCK
 AllreduceRobust manager;
 #else
 AllreduceMock manager;
 #endif
+#else
+AllreduceBase manager;
+#endif
 
 /*! \brief intiialize the synchronization module */
 void Init(int argc, char *argv[]) {

src/engine_base.cc

@@ -0,0 +1,15 @@
+/*!
+ *  Copyright (c) 2014 by Contributors
+ * \file engine_mock.cc
+ * \brief this is an engine implementation that will 
+ * insert failures in certain call point, to test if the engine is robust to failure
+ * \author Tianqi Chen
+ */
+// define use MOCK, os we will use mock Manager
+#define _CRT_SECURE_NO_WARNINGS
+#define _CRT_SECURE_NO_DEPRECATE
+#define NOMINMAX
+// switch engine to AllreduceMock
+#define RABIT_USE_BASE
+#include "./engine.cc"
+