1 files changed, 67 insertions, 0 deletions
diff --git a/tensorflow/compiler/xla/client/computation.cc b/tensorflow/compiler/xla/client/computation.cc
new file mode 100644
index 0000000000..cd7d8df58b
--- /dev/null
+++ b/tensorflow/compiler/xla/client/computation.cc
@@ -0,0 +1,67 @@
+/* Copyright 2017 The TensorFlow Authors. All Rights Reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+==============================================================================*/
+
+#include "tensorflow/compiler/xla/client/computation.h"
+
+#include "tensorflow/compiler/xla/ptr_util.h"
+#include "tensorflow/compiler/xla/status_macros.h"
+#include "tensorflow/core/lib/core/errors.h"
+
+namespace xla {
+
+Computation::Computation() : parent_(nullptr) {}
+
+Computation::Computation(ServiceInterface* parent,
+                         const ComputationHandle& handle)
+    : handle_(handle), parent_(parent) {}
+
+Computation::Computation(Computation&& computation)
+    : handle_(computation.handle_), parent_(computation.parent_) {
+  computation.ResetWithoutFreeing();
+}
+
+void Computation::Reset() {
+  // TODO(leary) deallocate any owned computation.
+  ResetWithoutFreeing();
+}
+
+StatusOr<std::unique_ptr<SessionModule>> Computation::Snapshot() const {
+  SnapshotComputationRequest request;
+  *request.mutable_computation() = handle_;
+  SnapshotComputationResponse response;
+
+  TF_RETURN_IF_ERROR(parent_->SnapshotComputation(&request, &response));
+
+  return WrapUnique(response.release_module());
+}
+
+Computation::~Computation() { Reset(); }
+
+Computation& Computation::operator=(Computation&& computation) {
+  if (&computation != this) {
+    Reset();
+    handle_ = computation.handle_;
+    parent_ = computation.parent_;
+    computation.ResetWithoutFreeing();
+  }
+  return *this;
+}
+
+void Computation::ResetWithoutFreeing() {
+  handle_.Clear();
+  parent_ = nullptr;
+}
+
+}  // namespace xla