engines removals

cpp/daal/include/algorithms/decision_forest/decision_forest_classification_training_types.h

@@ -176,7 +176,7 @@ class DAAL_EXPORT Result : public classifier::training::Result
      * \param[in] id    Identifier of the result
      * \return          Result that corresponds to the given identifier
      */
-    engines::EnginePtr get(ResultEngineId id) const;
+    engines::EngineIfacePtr get(ResultEngineId id) const;
 
 protected:
     using daal::algorithms::interface1::Result::check;

cpp/daal/include/algorithms/decision_forest/decision_forest_regression_training_types.h

@@ -245,7 +245,7 @@ class DAAL_EXPORT Result : public algorithms::regression::training::Result
      * \param[in] id    Identifier of the result
      * \return          Result that corresponds to the given identifier
      */
-    engines::EnginePtr get(ResultEngineId id) const;
+    engines::EngineIfacePtr get(ResultEngineId id) const;
 
 protected:
     using daal::algorithms::interface1::Result::check;

cpp/daal/include/algorithms/decision_forest/decision_forest_training_parameter.h

@@ -28,7 +28,7 @@
 #include "data_management/data/numeric_table.h"
 #include "data_management/data/data_serialize.h"
 #include "services/daal_defines.h"
-#include "algorithms/engines/mt2203/mt2203.h"
+#include "algorithms/engines/engine.h"
 
 namespace daal
 {
@@ -138,7 +138,7 @@ class DAAL_EXPORT Parameter
     size_t minObservationsInLeafNode;      /*!< Minimal number of observations in a leaf node.
                                                   Default is 1 for classification, 5 for regression. */
     size_t seed;                           /*!< Seed for the random numbers generator used by the algorithms \DAAL_DEPRECATED_USE{ engine } */
-    engines::EnginePtr engine;             /*!< Engine for the random numbers generator used by the algorithms */
+    engines::EngineIfacePtr engine;        /*!< Engine for the random numbers generator used by the algorithms */
     double impurityThreshold;              /*!< Threshold value used as stopping criteria: if the impurity value in the node is smaller
                                                   than the threshold then the node is not split anymore.*/
     VariableImportanceMode varImportance;  /*!< Variable importance computation mode */

cpp/daal/include/algorithms/em/em_gmm_init_types.h

@@ -29,7 +29,7 @@
 #include "data_management/data/homogen_numeric_table.h"
 #include "services/daal_defines.h"
 #include "algorithms/em/em_gmm_covariance_storage_id.h"
-#include "algorithms/engines/mt19937/mt19937.h"
+#include "algorithms/engines/engine.h"
 
 namespace daal
 {
@@ -131,7 +131,7 @@ struct DAAL_EXPORT Parameter : public daal::algorithms::Parameter
     size_t seed;                                   /*!< Seed for randomly generating data points to start the initialization of short EM */
     double accuracyThreshold;                      /*!< Threshold for the termination of the algorithm */
     em_gmm::CovarianceStorageId covarianceStorage; /*!< Type of covariance in the Gaussian mixture model. */
-    engines::EnginePtr engine; /*!< Engine to be used for randomly generating data points to start the initialization of short EM */
+    engines::EngineIfacePtr engine; /*!< Engine to be used for randomly generating data points to start the initialization of short EM */
 };
 /* [Parameter source code] */
 

cpp/daal/include/algorithms/engines/engine.h

@@ -17,14 +17,15 @@
 
 /*
 //++
-//  Implementation engine.
+//  Public interface for random number engines.
 //--
 */
 
 #ifndef __ENGINE_H__
 #define __ENGINE_H__
 
-#include "algorithms/engines/engine_types.h"
+#include "services/daal_defines.h"
+#include "services/daal_shared_ptr.h"
 
 namespace daal
 {
@@ -36,75 +37,54 @@ namespace engines
  * @ingroup engines
  * @{
  */
+/**
+ * <a name="DAAL-ENUM-ALGORITHMS__ENGINES__ENGINETYPE"></a>
+ * \brief Available random number engine types
+ */
+enum EngineType
+{
+    mt19937Engine       = 0, /*!< Mersenne Twister engine (mt19937) */
+    mt2203Engine        = 1, /*!< Mersenne Twister engine (mt2203) */
+    mcg59Engine         = 2, /*!< Multiplicative congruential generator (mcg59) */
+    mrg32k3aEngine      = 3, /*!< Combined multiple recursive generator (mrg32k3a) */
+    philox4x32x10Engine = 4  /*!< Philox 4x32-10 counter-based engine */
+};
+
 namespace interface1
 {
 /**
- * <a name="DAAL-CLASS-ALGORITHMS__ENGINES__BATCHBASE"></a>
- *  \brief Class representing an engine
+ * <a name="DAAL-CLASS-ALGORITHMS__ENGINES__ENGINEIFACE"></a>
+ *  \brief Minimal public interface for random number engines
  */
-class BatchBase : public daal::algorithms::Analysis<batch>
+class DAAL_EXPORT EngineIface
 {
 public:
-    typedef algorithms::engines::Input InputType;
-    typedef algorithms::engines::Result ResultType;
-
-    InputType input; /*!< Input of the engine */
-
-    BatchBase() {}
-    virtual ~BatchBase() {}
-
-    /**
-     * Saves current engine state to destination
-     * \param[in] dest  Destination to save the state
-     *
-     * \return Status of computations
-     */
-    services::Status saveState(byte * dest) const { return saveStateImpl(dest); }
-
-    /**
-     * Rewrites current state with source one
-     * \param[in] src  Source state
-     *
-     * \return Status of computations
-     */
-    services::Status loadState(const byte * src) { return loadStateImpl(src); }
-
-    /**
-     * Enables the usage of current engine in parallel regions of code with leapfrog method
-     * \param[in] threadIdx  Index of the thread
-     * \param[in] nThreads   Number of threads
-     *
-     * \return Status of computations
-     */
-    services::Status leapfrog(size_t threadIdx, size_t nThreads) { return leapfrogImpl(threadIdx, nThreads); }
-
-    /**
-     * Enables the usage of current engine in parallel regions of code with skipAhead method
-     * \param[in] nSkip  Number of elements that will be skipped
-     *
-     * \return Status of computations
-     */
-    services::Status skipAhead(size_t nSkip) { return skipAheadImpl(nSkip); }
+    virtual ~EngineIface() {}
 
     /**
      * Returns a pointer to the newly allocated engine
      * with a copy of input objects and parameters of this engine
      * \return Pointer to the newly allocated engine
      */
-    services::SharedPtr<BatchBase> clone() const { return services::SharedPtr<BatchBase>(cloneImpl()); }
+    virtual services::SharedPtr<EngineIface> clone() const = 0;
 
 protected:
-    virtual services::Status saveStateImpl(byte * /*dest*/) const { return services::Status(); }
-    virtual services::Status loadStateImpl(const byte * /*src*/) { return services::Status(); }
-    virtual services::Status leapfrogImpl(size_t /*threadNum*/, size_t /*nThreads*/) { return services::Status(services::ErrorMethodNotSupported); }
-    virtual services::Status skipAheadImpl(size_t /*nSkip*/) { return services::Status(); }
-    virtual BatchBase * cloneImpl() const = 0;
+    EngineIface() {}
 };
-typedef services::SharedPtr<BatchBase> EnginePtr;
+typedef services::SharedPtr<EngineIface> EngineIfacePtr;
+
+/**
+ * Creates a random number engine of specified type
+ * \param[in] type  Type of the engine to create
+ * \param[in] seed  Initial seed for the engine
+ * \return Pointer to the newly created engine
+ */
+DAAL_EXPORT EngineIfacePtr createEngine(EngineType type, size_t seed = 777);
 
 } // namespace interface1
-using interface1::BatchBase;
-using interface1::EnginePtr;
+using interface1::EngineIface;
+using interface1::EngineIfacePtr;
+using interface1::createEngine;
 /** @} */
 } // namespace engines
 } // namespace algorithms

cpp/daal/include/algorithms/gradient_boosted_trees/gbt_training_parameter.h

@@ -113,7 +113,7 @@ class DAAL_EXPORT Parameter
                                                  Default is 0 (use all features) */
     size_t minObservationsInLeafNode;   /*!< Minimal number of observations in a leaf node. Default is 5. */
     bool memorySavingMode;              /*!< If true then use memory saving (but slower) mode. Default is false */
-    engines::EnginePtr engine;          /*!< Engine for the random numbers generator used by the algorithms */
+    engines::EngineIfacePtr engine;     /*!< Engine for the random numbers generator used by the algorithms */
     size_t maxBins;                     /*!< Used with 'inexact' split finding method only.
                                                  Maximal number of discrete bins to bucket continuous features.
                                                  Default is 256. Increasing the number results in higher computation costs */

cpp/daal/include/algorithms/implicit_als/implicit_als_training_init_types.h

@@ -27,7 +27,7 @@
 #include "algorithms/implicit_als/implicit_als_model.h"
 #include "algorithms/implicit_als/implicit_als_training_types.h"
 #include "data_management/data/csr_numeric_table.h"
-#include "algorithms/engines/mt19937/mt19937.h"
+#include "algorithms/engines/engine.h"
 
 namespace daal
 {
@@ -160,10 +160,10 @@ struct DAAL_EXPORT Parameter : public daal::algorithms::Parameter
      */
     Parameter(size_t nFactors = 10, size_t fullNUsers = 0, size_t seed = 777777);
 
-    size_t nFactors;           /*!< Total number of factors */
-    size_t fullNUsers;         /*!< Full number of users */
-    size_t seed;               /*!< Seed for generating random numbers in the initialization step \DAAL_DEPRECATED_USE{ engine } */
-    engines::EnginePtr engine; /*!< Engine for generating random numbers in the initialization step */
+    size_t nFactors;                /*!< Total number of factors */
+    size_t fullNUsers;              /*!< Full number of users */
+    size_t seed;                    /*!< Seed for generating random numbers in the initialization step \DAAL_DEPRECATED_USE{ engine } */
+    engines::EngineIfacePtr engine; /*!< Engine for generating random numbers in the initialization step */
 
     services::Status check() const override;
 };

cpp/daal/include/algorithms/k_nearest_neighbors/bf_knn_classification_model.h

@@ -25,7 +25,7 @@
 #define __BF_KNN_CLASSIFICATION_MODEL_H__
 
 #include "algorithms/classifier/classifier_model.h"
-#include "algorithms/engines/mcg59/mcg59.h"
+#include "algorithms/engines/engine.h"
 
 namespace daal
 {
@@ -102,7 +102,7 @@ struct DAAL_EXPORT Parameter : public daal::algorithms::classifier::Parameter
           dataUseInModel(dataUse),
           resultsToCompute(resToCompute),
           voteWeights(vote),
-          engine(engines::mcg59::Batch<>::create())
+          engine(engines::createEngine(engines::mcg59Engine))
     {
         this->resultsToEvaluate = resToEvaluate;
     }
@@ -147,11 +147,11 @@ struct DAAL_EXPORT Parameter : public daal::algorithms::classifier::Parameter
      */
     services::Status check() const override;
 
-    size_t k;                      /*!< Number of neighbors */
-    DataUseInModel dataUseInModel; /*!< The option to enable/disable an usage of the input dataset in kNN model */
-    DAAL_UINT64 resultsToCompute;  /*!< 64 bit integer flag that indicates the results to compute */
-    VoteWeights voteWeights;       /*!< Weight function used in prediction */
-    engines::EnginePtr engine;     /*!< Engine for random choosing elements from training dataset */
+    size_t k;                       /*!< Number of neighbors */
+    DataUseInModel dataUseInModel;  /*!< The option to enable/disable an usage of the input dataset in kNN model */
+    DAAL_UINT64 resultsToCompute;   /*!< 64 bit integer flag that indicates the results to compute */
+    VoteWeights voteWeights;        /*!< Weight function used in prediction */
+    engines::EngineIfacePtr engine; /*!< Engine for random choosing elements from training dataset */
 };
 /* [Parameter source code] */
 

cpp/daal/include/algorithms/k_nearest_neighbors/kdtree_knn_classification_model.h

@@ -28,7 +28,7 @@
 #include "data_management/data/aos_numeric_table.h"
 #include "data_management/data/soa_numeric_table.h"
 #include "data_management/data/homogen_numeric_table.h"
-#include "algorithms/engines/mcg59/mcg59.h"
+#include "algorithms/engines/engine.h"
 
 namespace daal
 {
@@ -107,7 +107,7 @@ struct DAAL_EXPORT Parameter : public daal::algorithms::classifier::Parameter
           k(nNeighbors),
           seed(randomSeed),
           dataUseInModel(dataUse),
-          engine(engines::mcg59::Batch<>::create()),
+          engine(engines::createEngine(engines::mcg59Engine)),
           resultsToCompute(resToCompute),
           voteWeights(vote)
     {
@@ -119,12 +119,12 @@ struct DAAL_EXPORT Parameter : public daal::algorithms::classifier::Parameter
      */
     services::Status check() const override;
 
-    size_t k;                      /*!< Number of neighbors */
-    int seed;                      /*!< Seed for random choosing elements from training dataset \DAAL_DEPRECATED_USE{ engine } */
-    DataUseInModel dataUseInModel; /*!< The option to enable/disable an usage of the input dataset in kNN model */
-    engines::EnginePtr engine;     /*!< Engine for random choosing elements from training dataset */
-    DAAL_UINT64 resultsToCompute;  /*!< 64 bit integer flag that indicates the results to compute */
-    VoteWeights voteWeights;       /*!< Weight function used in prediction */
+    size_t k;                       /*!< Number of neighbors */
+    int seed;                       /*!< Seed for random choosing elements from training dataset \DAAL_DEPRECATED_USE{ engine } */
+    DataUseInModel dataUseInModel;  /*!< The option to enable/disable an usage of the input dataset in kNN model */
+    engines::EngineIfacePtr engine; /*!< Engine for random choosing elements from training dataset */
+    DAAL_UINT64 resultsToCompute;   /*!< 64 bit integer flag that indicates the results to compute */
+    VoteWeights voteWeights;        /*!< Weight function used in prediction */
 };
 /* [Parameter source code] */
 } // namespace interface3

cpp/daal/include/algorithms/kmeans/kmeans_init_types.h

@@ -29,7 +29,7 @@
 #include "data_management/data/homogen_numeric_table.h"
 #include "data_management/data/data_collection.h"
 #include "services/daal_defines.h"
-#include "algorithms/engines/mt19937/mt19937.h"
+#include "algorithms/engines/engine.h"
 
 namespace daal
 {
@@ -296,7 +296,7 @@ struct DAAL_EXPORT Parameter : public daal::algorithms::Parameter
                                                    L = nClusters* oversamplingFactor points are sampled in a round. */
     size_t nRounds;            /*!< Kmeans|| only. Number of rounds for k-means||. (oversamplingFactor*nRounds) > 1 is a requirement.*/
 
-    engines::EnginePtr engine; /*!< Engine to be used for generating random numbers for the initialization */
+    engines::EngineIfacePtr engine; /*!< Engine to be used for generating random numbers for the initialization */
 
     services::Status check() const override;
 };

cpp/daal/include/algorithms/optimization_solver/coordinate_descent/coordinate_descent_types.h

@@ -28,7 +28,7 @@
 #include "data_management/data/homogen_numeric_table.h"
 #include "services/daal_defines.h"
 #include "algorithms/optimization_solver/iterative_solver/iterative_solver_types.h"
-#include "algorithms/engines/mt19937/mt19937.h"
+#include "algorithms/engines/engine.h"
 #include "algorithms/optimization_solver/objective_function/logistic_loss_batch.h"
 
 namespace daal
@@ -99,9 +99,9 @@ struct DAAL_EXPORT Parameter : public optimization_solver::iterative_solver::Par
      */
     services::Status check() const override;
 
-    size_t seed;               /*!< Seed for random generation of 32 bit integer indices of terms
+    size_t seed;                    /*!< Seed for random generation of 32 bit integer indices of terms
                                                       in the objective function. \DAAL_DEPRECATED_USE{ engine } */
-    engines::EnginePtr engine; /*!< Engine for random generation of 32 bit integer indices of terms
+    engines::EngineIfacePtr engine; /*!< Engine for random generation of 32 bit integer indices of terms
                                                                    in the objective function. */
     SelectionStrategy selection;
     bool positive;

cpp/daal/include/algorithms/optimization_solver/lbfgs/lbfgs_types.h

@@ -31,7 +31,7 @@
 #include "services/daal_defines.h"
 #include "algorithms/optimization_solver/iterative_solver/iterative_solver_batch.h"
 #include "algorithms/optimization_solver/objective_function/sum_of_functions_batch.h"
-#include "algorithms/engines/mt19937/mt19937.h"
+#include "algorithms/engines/engine.h"
 
 namespace daal
 {
@@ -114,12 +114,12 @@ struct DAAL_EXPORT Parameter : public optimization_solver::iterative_solver::Par
 
     virtual ~Parameter() {}
 
-    size_t m;                  /*!< Memory parameter of LBFGS.
+    size_t m;                       /*!< Memory parameter of LBFGS.
                                          The maximum number of correction pairs that define the approximation
                                          of inverse Hessian matrix. */
-    size_t L;                  /*!< The number of iterations between the curvature estimates calculations */
-    size_t seed;               /*!< Seed for random choosing terms from objective function. \DAAL_DEPRECATED_USE{ engine } */
-    engines::EnginePtr engine; /*!< Engine for random choosing terms from objective function. */
+    size_t L;                       /*!< The number of iterations between the curvature estimates calculations */
+    size_t seed;                    /*!< Seed for random choosing terms from objective function. \DAAL_DEPRECATED_USE{ engine } */
+    engines::EngineIfacePtr engine; /*!< Engine for random choosing terms from objective function. */
 
     data_management::NumericTablePtr batchIndices;
 

cpp/daal/include/daal.h

@@ -206,17 +206,6 @@
 #include "algorithms/linear_model/linear_model_training_batch.h"
 #include "algorithms/linear_model/linear_model_predict.h"
 #include "algorithms/engines/engine.h"
-#include "algorithms/engines/mt19937/mt19937.h"
-#include "algorithms/engines/mt19937/mt19937_types.h"
-#include "algorithms/engines/mcg59/mcg59.h"
-#include "algorithms/engines/mcg59/mcg59_types.h"
-#include "algorithms/engines/engine_family.h"
-#include "algorithms/engines/mt2203/mt2203.h"
-#include "algorithms/engines/mt2203/mt2203_types.h"
-#include "algorithms/engines/mrg32k3a/mrg32k3a.h"
-#include "algorithms/engines/mrg32k3a/mrg32k3a_types.h"
-#include "algorithms/engines/philox4x32x10/philox4x32x10.h"
-#include "algorithms/engines/philox4x32x10/philox4x32x10_types.h"
 #include "algorithms/dbscan/dbscan_types.h"
 #include "algorithms/dbscan/dbscan_batch.h"
 #include "algorithms/dbscan/dbscan_distributed.h"

cpp/daal/include/daal_win.h

@@ -218,17 +218,6 @@
 #include "algorithms/linear_model/linear_model_training_batch.h"
 #include "algorithms/linear_model/linear_model_predict.h"
 #include "algorithms/engines/engine.h"
-#include "algorithms/engines/mt19937/mt19937.h"
-#include "algorithms/engines/mt19937/mt19937_types.h"
-#include "algorithms/engines/mcg59/mcg59.h"
-#include "algorithms/engines/mcg59/mcg59_types.h"
-#include "algorithms/engines/engine_family.h"
-#include "algorithms/engines/mt2203/mt2203.h"
-#include "algorithms/engines/mt2203/mt2203_types.h"
-#include "algorithms/engines/mrg32k3a/mrg32k3a.h"
-#include "algorithms/engines/mrg32k3a/mrg32k3a_types.h"
-#include "algorithms/engines/philox4x32x10/philox4x32x10.h"
-#include "algorithms/engines/philox4x32x10/philox4x32x10_types.h"
 #include "algorithms/dbscan/dbscan_types.h"
 #include "algorithms/dbscan/dbscan_batch.h"
 #include "algorithms/dbscan/dbscan_distributed.h"

cpp/daal/src/algorithms/distributions/bernoulli/bernoulli_kernel.h

@@ -28,6 +28,7 @@
 #include "src/data_management/service_numeric_table.h"
 #include "src/externals/service_rng.h"
 #include "src/algorithms/distributions/uniform/uniform_kernel.h"
+#include "src/algorithms/engines/engine_impl.h"
 
 using namespace daal::services;
 using namespace daal::data_management;