[Embedding] undefine EV GPU interface in CPU compile. (#956)

Signed-off-by: candy.dc <candy.dc@alibaba-inc.com>

Author: candyzone

tensorflow/core/framework/embedding/embedding_var.h

@@ -140,13 +140,6 @@ class EmbeddingVar : public ResourceBase {
     return storage_->Get(key, value_ptr);
   }
 
-  void BatchLookupKey(const EmbeddingVarContext<GPUDevice>& ctx,
-                      const K* keys,
-                      void** value_ptr_list,
-                      int64 num_of_keys) {
-    storage_->BatchGet(ctx, keys, value_ptr_list, num_of_keys);
-  }
-
   Status LookupOrCreateKey(K key, void** value_ptr,
                            bool* is_filter, bool indices_as_pointer,
                            int64 count = 1) {
@@ -167,45 +160,6 @@ class EmbeddingVar : public ResourceBase {
     return Status::OK();
   }
 
-  Status LookupOrCreateKey(const EmbeddingVarContext<GPUDevice>& context,
-                           const K* keys,
-                           void** value_ptrs,
-                           int64 num_of_keys,
-                           int64* indices_counts,
-                           bool indices_as_pointer = false) {
-    if (indices_as_pointer) {
-      auto lookup_key_and_set_version_fn = [keys, value_ptrs]
-          (int64 start, int64 limit) {
-        for (int i = start; i < limit; i++) {
-          value_ptrs[i] = (void*)keys[i];
-        }
-      };
-      const int64 unit_cost = 1000; //very unreliable estimate for cost per step.
-      auto worker_threads = context.worker_threads;
-      Shard(worker_threads->num_threads,
-            worker_threads->workers, num_of_keys, unit_cost,
-            lookup_key_and_set_version_fn);
-    } else {
-      filter_->BatchLookupOrCreateKey(context, keys, value_ptrs, num_of_keys);
-    }
-
-    if (indices_counts != nullptr) {
-      auto add_freq_fn = [this, value_ptrs, indices_counts]
-          (int64 start, int64 limit) {
-        for (int i = start; i < limit; i++) {
-          feat_desc_->AddFreq(value_ptrs[i], indices_counts[i]);
-        }
-      };
-      const int64 unit_cost = 1000; //very unreliable estimate for cost per step.
-      auto worker_threads = context.worker_threads;
-      Shard(worker_threads->num_threads,
-            worker_threads->workers, num_of_keys, unit_cost,
-            add_freq_fn);
-    }
-    return Status::OK();
-  }
-
-
   Status LookupOrCreateKey(K key, void** value_ptr) {
     Status s = storage_->GetOrCreate(key, value_ptr);
     TF_CHECK_OK(s);
@@ -402,6 +356,51 @@ class EmbeddingVar : public ResourceBase {
 
     storage_->AddToCache(keys_tensor);
   }
+
+  void BatchLookupKey(const EmbeddingVarContext<GPUDevice>& ctx,
+                      const K* keys,
+                      void** value_ptr_list,
+                      int64 num_of_keys) {
+    storage_->BatchGet(ctx, keys, value_ptr_list, num_of_keys);
+  }
+
+  Status LookupOrCreateKey(const EmbeddingVarContext<GPUDevice>& context,
+                           const K* keys,
+                           void** value_ptrs,
+                           int64 num_of_keys,
+                           int64* indices_counts,
+                           bool indices_as_pointer = false) {
+    if (indices_as_pointer) {
+      auto lookup_key_and_set_version_fn = [keys, value_ptrs]
+          (int64 start, int64 limit) {
+        for (int i = start; i < limit; i++) {
+          value_ptrs[i] = (void*)keys[i];
+        }
+      };
+      const int64 unit_cost = 1000; //very unreliable estimate for cost per step.
+      auto worker_threads = context.worker_threads;
+      Shard(worker_threads->num_threads,
+            worker_threads->workers, num_of_keys, unit_cost,
+            lookup_key_and_set_version_fn);
+    } else {
+      filter_->BatchLookupOrCreateKey(context, keys, value_ptrs, num_of_keys);
+    }
+
+    if (indices_counts != nullptr) {
+      auto add_freq_fn = [this, value_ptrs, indices_counts]
+          (int64 start, int64 limit) {
+        for (int i = start; i < limit; i++) {
+          feat_desc_->AddFreq(value_ptrs[i], indices_counts[i]);
+        }
+      };
+      const int64 unit_cost = 1000; //very unreliable estimate for cost per step.
+      auto worker_threads = context.worker_threads;
+      Shard(worker_threads->num_threads,
+            worker_threads->workers, num_of_keys, unit_cost,
+            add_freq_fn);
+    }
+    return Status::OK();
+  }
 #endif
 
 #if GOOGLE_CUDA