Rename and extract Context. (#8528)

* Rename `GenericParameter` to `Context`.
* Rename header file to reflect the change.
* Rename all references.

src/common/hist_util.h

@@ -8,21 +8,21 @@
 #define XGBOOST_COMMON_HIST_UTIL_H_
 
 #include <xgboost/data.h>
-#include <xgboost/generic_parameters.h>
-#include <limits>
-#include <vector>
+
 #include <algorithm>
+#include <limits>
+#include <map>
 #include <memory>
 #include <utility>
-#include <map>
+#include <vector>
 
+#include "algorithm.h"  // SegmentId
 #include "categorical.h"
 #include "common.h"
 #include "quantile.h"
 #include "row_set.h"
 #include "threading_utils.h"
 #include "timer.h"
-#include "algorithm.h"  // SegmentId
 
 namespace xgboost {
 class GHistIndexMatrix;

src/common/linalg_op.cuh

@@ -4,9 +4,9 @@
 #ifndef XGBOOST_COMMON_LINALG_OP_CUH_
 #define XGBOOST_COMMON_LINALG_OP_CUH_
 
-#include "xgboost/generic_parameters.h"
 #include "device_helpers.cuh"
 #include "linalg_op.h"
+#include "xgboost/context.h"
 #include "xgboost/linalg.h"
 
 namespace xgboost {

src/common/linalg_op.h

@@ -9,7 +9,7 @@
 #include "common.h"
 #include "threading_utils.h"
 #include "transform_iterator.h"  // MakeIndexTransformIter
-#include "xgboost/generic_parameters.h"
+#include "xgboost/context.h"     // Context
 #include "xgboost/linalg.h"
 
 namespace xgboost {
@@ -54,7 +54,7 @@ void ElementWiseTransformDevice(linalg::TensorView<T, D>, Fn&&, void* = nullptr)
 }
 
 template <typename T, int32_t D, typename Fn>
-void ElementWiseKernel(GenericParameter const* ctx, linalg::TensorView<T, D> t, Fn&& fn) {
+void ElementWiseKernel(Context const* ctx, linalg::TensorView<T, D> t, Fn&& fn) {
   if (!ctx->IsCPU()) {
     common::AssertGPUSupport();
   }

src/common/numeric.cc

@@ -7,7 +7,7 @@
 #include <type_traits>  // std::is_same
 
 #include "threading_utils.h"             // MemStackAllocator, ParallelFor, DefaultMaxThreads
-#include "xgboost/generic_parameters.h"  // Context
+#include "xgboost/context.h"             // Context
 #include "xgboost/host_device_vector.h"  // HostDeviceVector
 
 namespace xgboost {

src/common/numeric.cu

@@ -6,7 +6,7 @@
 
 #include "device_helpers.cuh"  // dh::Reduce, safe_cuda, dh::XGBCachingDeviceAllocator
 #include "numeric.h"
-#include "xgboost/generic_parameters.h"  // Context
+#include "xgboost/context.h"             // Context
 #include "xgboost/host_device_vector.h"  // HostDeviceVector
 
 namespace xgboost {

src/common/numeric.h

@@ -12,7 +12,7 @@
 
 #include "common.h"                      // AssertGPUSupport
 #include "threading_utils.h"             // MemStackAllocator, DefaultMaxThreads
-#include "xgboost/generic_parameters.h"  // Context
+#include "xgboost/context.h"             // Context
 #include "xgboost/host_device_vector.h"  // HostDeviceVector
 
 namespace xgboost {

src/common/partition_builder.h

@@ -10,15 +10,15 @@
 #include <xgboost/data.h>
 
 #include <algorithm>
+#include <limits>
 #include <memory>
 #include <utility>
-#include <limits>
 #include <vector>
 
+#include "../tree/hist/expand_entry.h"
 #include "categorical.h"
 #include "column_matrix.h"
-#include "../tree/hist/expand_entry.h"
-#include "xgboost/generic_parameters.h"
+#include "xgboost/context.h"
 #include "xgboost/tree_model.h"
 
 namespace xgboost {

src/common/stats.cu

@@ -7,7 +7,7 @@
 #include "common.h"            // common::OptionalWeights
 #include "device_helpers.cuh"  // dh::MakeTransformIterator, tcbegin, tcend
 #include "stats.cuh"           // common::SegmentedQuantile, common::SegmentedWeightedQuantile
-#include "xgboost/generic_parameters.h"  // Context
+#include "xgboost/context.h"   // Context
 #include "xgboost/host_device_vector.h"  // HostDeviceVector
 #include "xgboost/linalg.h"              // linalg::TensorView, UnravelIndex, Apply
 

src/common/stats.cuh

@@ -11,7 +11,7 @@
 
 #include "device_helpers.cuh"
 #include "linalg_op.cuh"
-#include "xgboost/generic_parameters.h"
+#include "xgboost/context.h"
 #include "xgboost/linalg.h"
 #include "xgboost/tree_model.h"
 

src/common/stats.h

@@ -10,7 +10,7 @@
 
 #include "common.h"              // AssertGPUSupport
 #include "transform_iterator.h"  // MakeIndexTransformIter
-#include "xgboost/generic_parameters.h"
+#include "xgboost/context.h"     // Context
 #include "xgboost/linalg.h"
 
 namespace xgboost {