[ABSL] Purge common::make_unique. (#1340)

cartographer/BUILD.bazel

@@ -112,6 +112,7 @@ cc_library(
         ":cartographer",
         ":cartographer_test_library",
         "@com_google_googletest//:gtest_main",
+        "@com_google_absl//absl/memory",
     ],
 ) for src in glob(
     ["**/*_test.cc"],

cartographer/cloud/client/map_builder_stub.cc

@@ -34,7 +34,7 @@ namespace cartographer {
 namespace cloud {
 namespace {
 
-using common::make_unique;
+using absl::make_unique;
 constexpr int kConnectionTimeoutInSeconds = 10;
 
 }  // namespace

cartographer/cloud/internal/client/trajectory_builder_stub.cc

@@ -39,7 +39,7 @@ TrajectoryBuilderStub::TrajectoryBuilderStub(
     receive_local_slam_results_client_.Write(request);
     auto* receive_local_slam_results_client_ptr =
         &receive_local_slam_results_client_;
-    receive_local_slam_results_thread_ = common::make_unique<std::thread>(
+    receive_local_slam_results_thread_ = absl::make_unique<std::thread>(
         [receive_local_slam_results_client_ptr, local_slam_result_callback]() {
           RunLocalSlamResultsReader(receive_local_slam_results_client_ptr,
                                     local_slam_result_callback);
@@ -77,7 +77,7 @@ void TrajectoryBuilderStub::AddSensorData(
     const std::string& sensor_id,
     const sensor::TimedPointCloudData& timed_point_cloud_data) {
   if (!add_rangefinder_client_) {
-    add_rangefinder_client_ = common::make_unique<
+    add_rangefinder_client_ = absl::make_unique<
         async_grpc::Client<handlers::AddRangefinderDataSignature>>(
         client_channel_);
   }
@@ -92,7 +92,7 @@ void TrajectoryBuilderStub::AddSensorData(const std::string& sensor_id,
                                           const sensor::ImuData& imu_data) {
   if (!add_imu_client_) {
     add_imu_client_ =
-        common::make_unique<async_grpc::Client<handlers::AddImuDataSignature>>(
+        absl::make_unique<async_grpc::Client<handlers::AddImuDataSignature>>(
             client_channel_);
   }
   proto::AddImuDataRequest request;
@@ -104,7 +104,7 @@ void TrajectoryBuilderStub::AddSensorData(const std::string& sensor_id,
 void TrajectoryBuilderStub::AddSensorData(
     const std::string& sensor_id, const sensor::OdometryData& odometry_data) {
   if (!add_odometry_client_) {
-    add_odometry_client_ = common::make_unique<
+    add_odometry_client_ = absl::make_unique<
         async_grpc::Client<handlers::AddOdometryDataSignature>>(
         client_channel_);
   }
@@ -118,7 +118,7 @@ void TrajectoryBuilderStub::AddSensorData(
     const std::string& sensor_id,
     const sensor::FixedFramePoseData& fixed_frame_pose) {
   if (!add_fixed_frame_pose_client_) {
-    add_fixed_frame_pose_client_ = common::make_unique<
+    add_fixed_frame_pose_client_ = absl::make_unique<
         async_grpc::Client<handlers::AddFixedFramePoseDataSignature>>(
         client_channel_);
   }
@@ -132,7 +132,7 @@ void TrajectoryBuilderStub::AddSensorData(
 void TrajectoryBuilderStub::AddSensorData(
     const std::string& sensor_id, const sensor::LandmarkData& landmark_data) {
   if (!add_landmark_client_) {
-    add_landmark_client_ = common::make_unique<
+    add_landmark_client_ = absl::make_unique<
         async_grpc::Client<handlers::AddLandmarkDataSignature>>(
         client_channel_);
   }
@@ -158,7 +158,7 @@ void TrajectoryBuilderStub::RunLocalSlamResultsReader(
     sensor::RangeData range_data = sensor::FromProto(response.range_data());
     auto insertion_result =
         response.has_insertion_result()
-            ? common::make_unique<InsertionResult>(
+            ? absl::make_unique<InsertionResult>(
                   InsertionResult{mapping::NodeId{
                       response.insertion_result().node_id().trajectory_id(),
                       response.insertion_result().node_id().node_index()}})

cartographer/cloud/internal/client_server_test.cc

@@ -138,42 +138,42 @@ class ClientServerTest : public ::testing::Test {
   }
 
   void InitializeRealServer() {
-    auto map_builder = common::make_unique<MapBuilder>(
+    auto map_builder = absl::make_unique<MapBuilder>(
         map_builder_server_options_.map_builder_options());
-    server_ = common::make_unique<MapBuilderServer>(map_builder_server_options_,
+    server_ = absl::make_unique<MapBuilderServer>(map_builder_server_options_,
                                                   std::move(map_builder));
     EXPECT_TRUE(server_ != nullptr);
   }
 
   void InitializeRealUploadingServer() {
-    auto map_builder = common::make_unique<MapBuilder>(
+    auto map_builder = absl::make_unique<MapBuilder>(
         uploading_map_builder_server_options_.map_builder_options());
-    uploading_server_ = common::make_unique<MapBuilderServer>(
+    uploading_server_ = absl::make_unique<MapBuilderServer>(
         uploading_map_builder_server_options_, std::move(map_builder));
     EXPECT_TRUE(uploading_server_ != nullptr);
   }
 
   void InitializeServerWithMockMapBuilder() {
-    auto mock_map_builder = common::make_unique<MockMapBuilder>();
+    auto mock_map_builder = absl::make_unique<MockMapBuilder>();
     mock_map_builder_ = mock_map_builder.get();
-    mock_pose_graph_ = common::make_unique<MockPoseGraph>();
+    mock_pose_graph_ = absl::make_unique<MockPoseGraph>();
     EXPECT_CALL(*mock_map_builder_, pose_graph())
         .WillOnce(::testing::Return(mock_pose_graph_.get()));
     EXPECT_CALL(*mock_pose_graph_, SetGlobalSlamOptimizationCallback(_));
-    server_ = common::make_unique<MapBuilderServer>(
+    server_ = absl::make_unique<MapBuilderServer>(map_builder_server_options_,
-        map_builder_server_options_, std::move(mock_map_builder));
+                                                  std::move(mock_map_builder));
     EXPECT_TRUE(server_ != nullptr);
-    mock_trajectory_builder_ = common::make_unique<MockTrajectoryBuilder>();
+    mock_trajectory_builder_ = absl::make_unique<MockTrajectoryBuilder>();
   }
 
   void InitializeStub() {
-    stub_ = common::make_unique<MapBuilderStub>(
+    stub_ = absl::make_unique<MapBuilderStub>(
         map_builder_server_options_.server_address(), kClientId);
     EXPECT_TRUE(stub_ != nullptr);
   }
 
   void InitializeStubForUploadingServer() {
-    stub_for_uploading_server_ = common::make_unique<MapBuilderStub>(
+    stub_for_uploading_server_ = absl::make_unique<MapBuilderStub>(
         uploading_map_builder_server_options_.server_address(), kClientId);
     EXPECT_TRUE(stub_for_uploading_server_ != nullptr);
   }

cartographer/cloud/internal/handlers/add_fixed_frame_pose_data_handler.cc

@@ -16,11 +16,11 @@
 
 #include "cartographer/cloud/internal/handlers/add_fixed_frame_pose_data_handler.h"
 
+#include "absl/memory/memory.h"
 #include "async_grpc/rpc_handler.h"
 #include "cartographer/cloud/internal/map_builder_context_interface.h"
 #include "cartographer/cloud/internal/sensor/serialization.h"
 #include "cartographer/cloud/proto/map_builder_service.pb.h"
-#include "cartographer/common/make_unique.h"
 #include "cartographer/sensor/fixed_frame_pose_data.h"
 #include "cartographer/sensor/internal/dispatchable.h"
 #include "google/protobuf/empty.pb.h"
@@ -45,7 +45,7 @@ void AddFixedFramePoseDataHandler::OnSensorData(
   // 'MapBuilderContext'.
   if (GetUnsynchronizedContext<MapBuilderContextInterface>()
           ->local_trajectory_uploader()) {
-    auto sensor_data = common::make_unique<proto::SensorData>();
+    auto sensor_data = absl::make_unique<proto::SensorData>();
     *sensor_data->mutable_sensor_metadata() = request.sensor_metadata();
     *sensor_data->mutable_fixed_frame_pose_data() =
         request.fixed_frame_pose_data();

cartographer/cloud/internal/handlers/add_imu_data_handler.cc

@@ -16,11 +16,11 @@
 
 #include "cartographer/cloud/internal/handlers/add_imu_data_handler.h"
 
+#include "absl/memory/memory.h"
 #include "async_grpc/rpc_handler.h"
 #include "cartographer/cloud/internal/map_builder_context_interface.h"
 #include "cartographer/cloud/internal/sensor/serialization.h"
 #include "cartographer/cloud/proto/map_builder_service.pb.h"
-#include "cartographer/common/make_unique.h"
 #include "cartographer/sensor/imu_data.h"
 #include "cartographer/sensor/internal/dispatchable.h"
 #include "google/protobuf/empty.pb.h"
@@ -43,7 +43,7 @@ void AddImuDataHandler::OnSensorData(const proto::AddImuDataRequest& request) {
   // 'MapBuilderContext'.
   if (GetUnsynchronizedContext<MapBuilderContextInterface>()
           ->local_trajectory_uploader()) {
-    auto sensor_data = common::make_unique<proto::SensorData>();
+    auto sensor_data = absl::make_unique<proto::SensorData>();
     *sensor_data->mutable_sensor_metadata() = request.sensor_metadata();
     *sensor_data->mutable_imu_data() = request.imu_data();
     GetUnsynchronizedContext<MapBuilderContextInterface>()

cartographer/cloud/internal/handlers/add_landmark_data_handler.cc

@@ -16,11 +16,11 @@
 
 #include "cartographer/cloud/internal/handlers/add_landmark_data_handler.h"
 
+#include "absl/memory/memory.h"
 #include "async_grpc/rpc_handler.h"
 #include "cartographer/cloud/internal/map_builder_context_interface.h"
 #include "cartographer/cloud/internal/sensor/serialization.h"
 #include "cartographer/cloud/proto/map_builder_service.pb.h"
-#include "cartographer/common/make_unique.h"
 #include "cartographer/sensor/internal/dispatchable.h"
 #include "cartographer/sensor/landmark_data.h"
 #include "google/protobuf/empty.pb.h"
@@ -44,7 +44,7 @@ void AddLandmarkDataHandler::OnSensorData(
   // 'MapBuilderContext'.
   if (GetUnsynchronizedContext<MapBuilderContextInterface>()
           ->local_trajectory_uploader()) {
-    auto sensor_data = common::make_unique<proto::SensorData>();
+    auto sensor_data = absl::make_unique<proto::SensorData>();
     *sensor_data->mutable_sensor_metadata() = request.sensor_metadata();
     *sensor_data->mutable_landmark_data() = request.landmark_data();
     GetUnsynchronizedContext<MapBuilderContextInterface>()

cartographer/cloud/internal/handlers/add_odometry_data_handler.cc

@@ -16,11 +16,11 @@
 
 #include "cartographer/cloud/internal/handlers/add_odometry_data_handler.h"
 
+#include "absl/memory/memory.h"
 #include "async_grpc/rpc_handler.h"
 #include "cartographer/cloud/internal/map_builder_context_interface.h"
 #include "cartographer/cloud/internal/sensor/serialization.h"
 #include "cartographer/cloud/proto/map_builder_service.pb.h"
-#include "cartographer/common/make_unique.h"
 #include "cartographer/sensor/internal/dispatchable.h"
 #include "cartographer/sensor/odometry_data.h"
 #include "google/protobuf/empty.pb.h"
@@ -44,7 +44,7 @@ void AddOdometryDataHandler::OnSensorData(
   // 'MapBuilderContext'.
   if (GetUnsynchronizedContext<MapBuilderContextInterface>()
           ->local_trajectory_uploader()) {
-    auto sensor_data = common::make_unique<proto::SensorData>();
+    auto sensor_data = absl::make_unique<proto::SensorData>();
     *sensor_data->mutable_sensor_metadata() = request.sensor_metadata();
     *sensor_data->mutable_odometry_data() = request.odometry_data();
     GetUnsynchronizedContext<MapBuilderContextInterface>()

cartographer/cloud/internal/handlers/add_rangefinder_data_handler.cc

@@ -16,10 +16,10 @@
 
 #include "cartographer/cloud/internal/handlers/add_rangefinder_data_handler.h"
 
+#include "absl/memory/memory.h"
 #include "async_grpc/rpc_handler.h"
 #include "cartographer/cloud/internal/map_builder_context_interface.h"
 #include "cartographer/cloud/proto/map_builder_service.pb.h"
-#include "cartographer/common/make_unique.h"
 #include "cartographer/sensor/internal/dispatchable.h"
 #include "cartographer/sensor/timed_point_cloud_data.h"
 #include "google/protobuf/empty.pb.h"

cartographer/cloud/internal/handlers/add_sensor_data_batch_handler.cc

@@ -16,10 +16,10 @@
 
 #include "cartographer/cloud/internal/handlers/add_sensor_data_batch_handler.h"
 
+#include "absl/memory/memory.h"
 #include "async_grpc/rpc_handler.h"
 #include "cartographer/cloud/internal/map_builder_context_interface.h"
 #include "cartographer/cloud/proto/map_builder_service.pb.h"
-#include "cartographer/common/make_unique.h"
 #include "cartographer/mapping/local_slam_result_data.h"
 #include "cartographer/sensor/internal/dispatchable.h"
 #include "cartographer/sensor/timed_point_cloud_data.h"
@@ -93,7 +93,7 @@ void AddSensorDataBatchHandler::OnRequest(
                    << sensor_data.sensor_data_case();
     }
   }
-  Send(common::make_unique<google::protobuf::Empty>());
+  Send(absl::make_unique<google::protobuf::Empty>());
 }
 
 }  // namespace handlers

cartographer/cloud/internal/handlers/add_sensor_data_handler_base.h

@@ -50,7 +50,7 @@ class AddSensorDataHandlerBase
   virtual void OnSensorData(const SensorDataType& request) = 0;
 
   void OnReadsDone() override {
-    this->template Send(common::make_unique<google::protobuf::Empty>());
+    this->template Send(absl::make_unique<google::protobuf::Empty>());
   }
 };
 

cartographer/cloud/internal/handlers/add_trajectory_handler.cc

@@ -16,11 +16,11 @@
 
 #include "cartographer/cloud/internal/handlers/add_trajectory_handler.h"
 
+#include "absl/memory/memory.h"
 #include "async_grpc/rpc_handler.h"
 #include "cartographer/cloud/internal/map_builder_context_interface.h"
 #include "cartographer/cloud/internal/sensor/serialization.h"
 #include "cartographer/cloud/proto/map_builder_service.pb.h"
-#include "cartographer/common/make_unique.h"
 
 namespace cartographer {
 namespace cloud {
@@ -71,7 +71,7 @@ void AddTrajectoryHandler::OnRequest(
     }
   }
 
-  auto response = common::make_unique<proto::AddTrajectoryResponse>();
+  auto response = absl::make_unique<proto::AddTrajectoryResponse>();
   response->set_trajectory_id(trajectory_id);
   Send(std::move(response));
 }

cartographer/cloud/internal/handlers/add_trajectory_handler_test.cc

@@ -74,7 +74,7 @@ class AddTrajectoryHandlerTest
  public:
   void SetUp() override {
     testing::HandlerTest<AddTrajectorySignature, AddTrajectoryHandler>::SetUp();
-    mock_map_builder_ = common::make_unique<mapping::testing::MockMapBuilder>();
+    mock_map_builder_ = absl::make_unique<mapping::testing::MockMapBuilder>();
     EXPECT_CALL(*mock_map_builder_context_,
                 GetLocalSlamResultCallbackForSubscriptions())
         .WillOnce(Return(nullptr));

cartographer/cloud/internal/handlers/delete_trajectory_handler.cc

@@ -16,10 +16,10 @@
 
 #include "cartographer/cloud/internal/handlers/delete_trajectory_handler.h"
 
+#include "absl/memory/memory.h"
 #include "async_grpc/rpc_handler.h"
 #include "cartographer/cloud/internal/map_builder_context_interface.h"
 #include "cartographer/cloud/proto/map_builder_service.pb.h"
-#include "cartographer/common/make_unique.h"
 #include "google/protobuf/empty.pb.h"
 
 namespace cartographer {
@@ -40,7 +40,7 @@ void DeleteTrajectoryHandler::OnRequest(
       .pose_graph()
       ->DeleteTrajectory(request.trajectory_id());
   // TODO(gaschler): Think if LocalSlamUploader needs to be notified.
-  Send(common::make_unique<google::protobuf::Empty>());
+  Send(absl::make_unique<google::protobuf::Empty>());
 }
 
 }  // namespace handlers

cartographer/cloud/internal/handlers/finish_trajectory_handler.cc

@@ -16,10 +16,10 @@
 
 #include "cartographer/cloud/internal/handlers/finish_trajectory_handler.h"
 
+#include "absl/memory/memory.h"
 #include "async_grpc/rpc_handler.h"
 #include "cartographer/cloud/internal/map_builder_context_interface.h"
 #include "cartographer/cloud/proto/map_builder_service.pb.h"
-#include "cartographer/common/make_unique.h"
 #include "google/protobuf/empty.pb.h"
 
 namespace cartographer {
@@ -45,7 +45,7 @@ void FinishTrajectoryHandler::OnRequest(
         ->local_trajectory_uploader()
         ->FinishTrajectory(request.client_id(), request.trajectory_id());
   }
-  Send(common::make_unique<google::protobuf::Empty>());
+  Send(absl::make_unique<google::protobuf::Empty>());
 }
 
 }  // namespace handlers

cartographer/cloud/internal/handlers/get_all_submap_poses.cc

@@ -16,10 +16,10 @@
 
 #include "cartographer/cloud/internal/handlers/get_all_submap_poses.h"
 
+#include "absl/memory/memory.h"
 #include "async_grpc/rpc_handler.h"
 #include "cartographer/cloud/internal/map_builder_context_interface.h"
 #include "cartographer/cloud/proto/map_builder_service.pb.h"
-#include "cartographer/common/make_unique.h"
 #include "cartographer/transform/transform.h"
 #include "google/protobuf/empty.pb.h"
 
@@ -33,7 +33,7 @@ void GetAllSubmapPosesHandler::OnRequest(
                           ->map_builder()
                           .pose_graph()
                           ->GetAllSubmapPoses();
-  auto response = common::make_unique<proto::GetAllSubmapPosesResponse>();
+  auto response = absl::make_unique<proto::GetAllSubmapPosesResponse>();
   for (const auto& submap_id_pose : submap_poses) {
     auto* submap_pose = response->add_submap_poses();
     submap_id_pose.id.ToProto(submap_pose->mutable_submap_id());

cartographer/cloud/internal/handlers/get_constraints_handler.cc

@@ -16,10 +16,10 @@
 
 #include "cartographer/cloud/internal/handlers/get_constraints_handler.h"
 
+#include "absl/memory/memory.h"
 #include "async_grpc/rpc_handler.h"
 #include "cartographer/cloud/internal/map_builder_context_interface.h"
 #include "cartographer/cloud/proto/map_builder_service.pb.h"
-#include "cartographer/common/make_unique.h"
 #include "cartographer/mapping/pose_graph.h"
 #include "google/protobuf/empty.pb.h"
 
@@ -32,7 +32,7 @@ void GetConstraintsHandler::OnRequest(const google::protobuf::Empty& request) {
                          ->map_builder()
                          .pose_graph()
                          ->constraints();
-  auto response = common::make_unique<proto::GetConstraintsResponse>();
+  auto response = absl::make_unique<proto::GetConstraintsResponse>();
   response->mutable_constraints()->Reserve(constraints.size());
   for (const auto& constraint : constraints) {
     *response->add_constraints() = mapping::ToProto(constraint);

cartographer/cloud/internal/handlers/get_landmark_poses_handler.cc

@@ -16,10 +16,10 @@
 
 #include "cartographer/cloud/internal/handlers/get_landmark_poses_handler.h"
 
+#include "absl/memory/memory.h"
 #include "async_grpc/rpc_handler.h"
 #include "cartographer/cloud/internal/map_builder_context_interface.h"
 #include "cartographer/cloud/proto/map_builder_service.pb.h"
-#include "cartographer/common/make_unique.h"
 #include "cartographer/transform/transform.h"
 #include "google/protobuf/empty.pb.h"
 
@@ -33,7 +33,7 @@ void GetLandmarkPosesHandler::OnRequest(
                             ->map_builder()
                             .pose_graph()
                             ->GetLandmarkPoses();
-  auto response = common::make_unique<proto::GetLandmarkPosesResponse>();
+  auto response = absl::make_unique<proto::GetLandmarkPosesResponse>();
   for (const auto& landmark_pose : landmark_poses) {
     auto* landmark = response->add_landmark_poses();
     landmark->set_landmark_id(landmark_pose.first);

cartographer/cloud/internal/handlers/get_local_to_global_transform_handler.cc

@@ -28,8 +28,7 @@ namespace handlers {
 
 void GetLocalToGlobalTransformHandler::OnRequest(
     const proto::GetLocalToGlobalTransformRequest& request) {
-  auto response =
+  auto response = absl::make_unique<proto::GetLocalToGlobalTransformResponse>();
-      common::make_unique<proto::GetLocalToGlobalTransformResponse>();
   auto local_to_global =
       GetContext<MapBuilderContextInterface>()
           ->map_builder()

cartographer/cloud/internal/handlers/get_submap_handler.cc

@@ -16,10 +16,10 @@
 
 #include "cartographer/cloud/internal/handlers/get_submap_handler.h"
 
+#include "absl/memory/memory.h"
 #include "async_grpc/rpc_handler.h"
 #include "cartographer/cloud/internal/map_builder_context_interface.h"
 #include "cartographer/cloud/proto/map_builder_service.pb.h"
-#include "cartographer/common/make_unique.h"
 #include "google/protobuf/empty.pb.h"
 
 namespace cartographer {
@@ -27,7 +27,7 @@ namespace cloud {
 namespace handlers {
 
 void GetSubmapHandler::OnRequest(const proto::GetSubmapRequest &request) {
-  auto response = common::make_unique<proto::GetSubmapResponse>();
+  auto response = absl::make_unique<proto::GetSubmapResponse>();
   response->set_error_msg(
       GetContext<MapBuilderContextInterface>()->map_builder().SubmapToProto(
           mapping::SubmapId{request.submap_id().trajectory_id(),

cartographer/cloud/internal/handlers/get_trajectory_node_poses_handler.cc

@@ -16,10 +16,10 @@
 
 #include "cartographer/cloud/internal/handlers/get_trajectory_node_poses_handler.h"
 
+#include "absl/memory/memory.h"
 #include "async_grpc/rpc_handler.h"
 #include "cartographer/cloud/internal/map_builder_context_interface.h"
 #include "cartographer/cloud/proto/map_builder_service.pb.h"
-#include "cartographer/common/make_unique.h"
 #include "cartographer/transform/transform.h"
 #include "google/protobuf/empty.pb.h"
 
@@ -33,7 +33,7 @@ void GetTrajectoryNodePosesHandler::OnRequest(
                         ->map_builder()
                         .pose_graph()
                         ->GetTrajectoryNodePoses();
-  auto response = common::make_unique<proto::GetTrajectoryNodePosesResponse>();
+  auto response = absl::make_unique<proto::GetTrajectoryNodePosesResponse>();
   for (const auto& node_id_pose : node_poses) {
     auto* node_pose = response->add_node_poses();
     node_id_pose.id.ToProto(node_pose->mutable_node_id());

cartographer/cloud/internal/handlers/get_trajectory_states_handler.cc

@@ -16,11 +16,11 @@
 
 #include "cartographer/cloud/internal/handlers/get_trajectory_states_handler.h"
 
+#include "absl/memory/memory.h"
 #include "async_grpc/rpc_handler.h"
 #include "cartographer/cloud/internal/map_builder_context_interface.h"
 #include "cartographer/cloud/internal/mapping/serialization.h"
 #include "cartographer/cloud/proto/map_builder_service.pb.h"
-#include "cartographer/common/make_unique.h"
 #include "google/protobuf/empty.pb.h"
 
 namespace cartographer {
@@ -33,7 +33,7 @@ void GetTrajectoryStatesHandler::OnRequest(
                                 ->map_builder()
                                 .pose_graph()
                                 ->GetTrajectoryStates();
-  auto response = common::make_unique<proto::GetTrajectoryStatesResponse>();
+  auto response = absl::make_unique<proto::GetTrajectoryStatesResponse>();
   for (const auto& entry : trajectories_state) {
     (*response->mutable_trajectories_state())[entry.first] =
         ToProto(entry.second);

cartographer/cloud/internal/handlers/is_trajectory_finished_handler.cc

@@ -16,10 +16,10 @@
 
 #include "cartographer/cloud/internal/handlers/is_trajectory_finished_handler.h"
 
+#include "absl/memory/memory.h"
 #include "async_grpc/rpc_handler.h"
 #include "cartographer/cloud/internal/map_builder_context_interface.h"
 #include "cartographer/cloud/proto/map_builder_service.pb.h"
-#include "cartographer/common/make_unique.h"
 
 namespace cartographer {
 namespace cloud {
@@ -27,7 +27,7 @@ namespace handlers {
 
 void IsTrajectoryFinishedHandler::OnRequest(
     const proto::IsTrajectoryFinishedRequest& request) {
-  auto response = common::make_unique<proto::IsTrajectoryFinishedResponse>();
+  auto response = absl::make_unique<proto::IsTrajectoryFinishedResponse>();
   response->set_is_finished(
       GetContext<MapBuilderContextInterface>()
           ->map_builder()

cartographer/cloud/internal/handlers/is_trajectory_frozen_handler.cc

@@ -16,10 +16,10 @@
 
 #include "cartographer/cloud/internal/handlers/is_trajectory_frozen_handler.h"
 
+#include "absl/memory/memory.h"
 #include "async_grpc/rpc_handler.h"
 #include "cartographer/cloud/internal/map_builder_context_interface.h"
 #include "cartographer/cloud/proto/map_builder_service.pb.h"
-#include "cartographer/common/make_unique.h"
 
 namespace cartographer {
 namespace cloud {
@@ -27,7 +27,7 @@ namespace handlers {
 
 void IsTrajectoryFrozenHandler::OnRequest(
     const proto::IsTrajectoryFrozenRequest& request) {
-  auto response = common::make_unique<proto::IsTrajectoryFrozenResponse>();
+  auto response = absl::make_unique<proto::IsTrajectoryFrozenResponse>();
   response->set_is_frozen(GetContext<MapBuilderContextInterface>()
                               ->map_builder()
                               .pose_graph()

cartographer/cloud/internal/handlers/load_state_from_file_handler.cc

@@ -16,11 +16,11 @@
 
 #include "cartographer/cloud/internal/handlers/load_state_from_file_handler.h"
 
+#include "absl/memory/memory.h"
 #include "async_grpc/rpc_handler.h"
 #include "cartographer/cloud/internal/map_builder_context_interface.h"
 #include "cartographer/cloud/internal/mapping/serialization.h"
 #include "cartographer/cloud/proto/map_builder_service.pb.h"
-#include "cartographer/common/make_unique.h"
 
 namespace cartographer {
 namespace cloud {
@@ -37,7 +37,7 @@ void LoadStateFromFileHandler::OnRequest(
     GetContext<MapBuilderContextInterface>()->RegisterClientIdForTrajectory(
         request.client_id(), entry.second);
   }
-  auto response = common::make_unique<proto::LoadStateFromFileResponse>();
+  auto response = absl::make_unique<proto::LoadStateFromFileResponse>();
   *response->mutable_trajectory_remapping() = ToProto(trajectory_remapping);
   Send(std::move(response));
 }

cartographer/cloud/internal/handlers/load_state_handler.cc

@@ -16,11 +16,11 @@
 
 #include "cartographer/cloud/internal/handlers/load_state_handler.h"
 
+#include "absl/memory/memory.h"
 #include "async_grpc/rpc_handler.h"
 #include "cartographer/cloud/internal/map_builder_context_interface.h"
 #include "cartographer/cloud/internal/mapping/serialization.h"
 #include "cartographer/cloud/proto/map_builder_service.pb.h"
-#include "cartographer/common/make_unique.h"
 
 namespace cartographer {
 namespace cloud {
@@ -50,7 +50,7 @@ void LoadStateHandler::OnReadsDone() {
     GetContext<MapBuilderContextInterface>()->RegisterClientIdForTrajectory(
         client_id_, entry.second);
   }
-  auto response = common::make_unique<proto::LoadStateResponse>();
+  auto response = absl::make_unique<proto::LoadStateResponse>();
   *response->mutable_trajectory_remapping() = ToProto(trajectory_remapping);
   Send(std::move(response));
 }

cartographer/cloud/internal/handlers/receive_global_slam_optimizations_handler.cc

@@ -16,10 +16,10 @@
 
 #include "cartographer/cloud/internal/handlers/receive_global_slam_optimizations_handler.h"
 
+#include "absl/memory/memory.h"
 #include "async_grpc/rpc_handler.h"
 #include "cartographer/cloud/internal/map_builder_context_interface.h"
 #include "cartographer/cloud/proto/map_builder_service.pb.h"
-#include "cartographer/common/make_unique.h"
 #include "cartographer/transform/transform.h"
 
 namespace cartographer {
@@ -31,7 +31,7 @@ std::unique_ptr<proto::ReceiveGlobalSlamOptimizationsResponse> GenerateResponse(
     const std::map<int, mapping::SubmapId> &last_optimized_submap_ids,
     const std::map<int, mapping::NodeId> &last_optimized_node_ids) {
   auto response =
-      common::make_unique<proto::ReceiveGlobalSlamOptimizationsResponse>();
+      absl::make_unique<proto::ReceiveGlobalSlamOptimizationsResponse>();
   for (const auto &entry : last_optimized_submap_ids) {
     entry.second.ToProto(
         &(*response->mutable_last_optimized_submap_ids())[entry.first]);

cartographer/cloud/internal/handlers/receive_local_slam_results_handler.cc

@@ -16,10 +16,10 @@
 
 #include "cartographer/cloud/internal/handlers/receive_local_slam_results_handler.h"
 
+#include "absl/memory/memory.h"
 #include "async_grpc/rpc_handler.h"
 #include "cartographer/cloud/internal/map_builder_context_interface.h"
 #include "cartographer/cloud/proto/map_builder_service.pb.h"
-#include "cartographer/common/make_unique.h"
 #include "cartographer/transform/transform.h"
 
 namespace cartographer {
@@ -30,7 +30,7 @@ namespace {
 std::unique_ptr<proto::ReceiveLocalSlamResultsResponse> GenerateResponse(
     std::unique_ptr<MapBuilderContextInterface::LocalSlamResult>
         local_slam_result) {
-  auto response = common::make_unique<proto::ReceiveLocalSlamResultsResponse>();
+  auto response = absl::make_unique<proto::ReceiveLocalSlamResultsResponse>();
   response->set_trajectory_id(local_slam_result->trajectory_id);
   response->set_timestamp(common::ToUniversal(local_slam_result->time));
   *response->mutable_local_pose() =
@@ -74,7 +74,7 @@ void ReceiveLocalSlamResultsHandler::OnRequest(
               });
 
   subscription_id_ =
-      common::make_unique<MapBuilderContextInterface::LocalSlamSubscriptionId>(
+      absl::make_unique<MapBuilderContextInterface::LocalSlamSubscriptionId>(
           subscription_id);
 }
 

cartographer/cloud/internal/handlers/run_final_optimization_handler.cc

@@ -16,10 +16,10 @@
 
 #include "cartographer/cloud/internal/handlers/run_final_optimization_handler.h"
 
+#include "absl/memory/memory.h"
 #include "async_grpc/rpc_handler.h"
 #include "cartographer/cloud/internal/map_builder_context_interface.h"
 #include "cartographer/cloud/proto/map_builder_service.pb.h"
-#include "cartographer/common/make_unique.h"
 #include "cartographer/mapping/map_builder_interface.h"
 #include "cartographer/mapping/pose_graph.h"
 #include "google/protobuf/empty.pb.h"
@@ -34,7 +34,7 @@ void RunFinalOptimizationHandler::OnRequest(
       ->map_builder()
       .pose_graph()
       ->RunFinalOptimization();
-  Send(common::make_unique<google::protobuf::Empty>());
+  Send(absl::make_unique<google::protobuf::Empty>());
 }
 
 }  // namespace handlers

cartographer/cloud/internal/handlers/set_landmark_pose_handler.cc

@@ -34,7 +34,7 @@ void SetLandmarkPoseHandler::OnRequest(
       ->SetLandmarkPose(
           request.landmark_pose().landmark_id(),
           transform::ToRigid3(request.landmark_pose().global_pose()));
-  Send(common::make_unique<google::protobuf::Empty>());
+  Send(absl::make_unique<google::protobuf::Empty>());
 }
 
 }  // namespace handlers

cartographer/cloud/internal/handlers/write_state_handler.cc

@@ -35,7 +35,7 @@ void WriteStateHandler::OnRequest(const google::protobuf::Empty& request) {
           return true;
         }
 
-        auto response = common::make_unique<proto::WriteStateResponse>();
+        auto response = absl::make_unique<proto::WriteStateResponse>();
         if (proto->GetTypeName() ==
             "cartographer.mapping.proto.SerializationHeader") {
           response->mutable_header()->CopyFrom(*proto);

cartographer/cloud/internal/local_trajectory_uploader.cc

@@ -19,6 +19,7 @@
 #include <map>
 #include <thread>
 
+#include "absl/memory/memory.h"
 #include "async_grpc/client.h"
 #include "async_grpc/token_file_credentials.h"
 #include "cartographer/cloud/internal/handlers/add_sensor_data_batch_handler.h"
@@ -26,7 +27,6 @@
 #include "cartographer/cloud/internal/handlers/finish_trajectory_handler.h"
 #include "cartographer/cloud/internal/sensor/serialization.h"
 #include "cartographer/common/blocking_queue.h"
-#include "cartographer/common/make_unique.h"
 #include "glog/logging.h"
 #include "grpc++/grpc++.h"
 
@@ -34,7 +34,7 @@ namespace cartographer {
 namespace cloud {
 namespace {
 
-using common::make_unique;
+using absl::make_unique;
 
 constexpr int kConnectionTimeoutInSeconds = 10;
 constexpr int kTokenRefreshIntervalInSeconds = 60;

cartographer/cloud/internal/map_builder_context_impl.cc

@@ -27,9 +27,9 @@ template <>
 void MapBuilderContext<mapping::Submap2D>::EnqueueLocalSlamResultData(
     int trajectory_id, const std::string& sensor_id,
     const mapping::proto::LocalSlamResultData& local_slam_result_data) {
-  map_builder_server_->incoming_data_queue_.Push(common::make_unique<Data>(
+  map_builder_server_->incoming_data_queue_.Push(absl::make_unique<Data>(
       Data{trajectory_id,
-           common::make_unique<mapping::LocalSlamResult2D>(
+           absl::make_unique<mapping::LocalSlamResult2D>(
                sensor_id, local_slam_result_data, &submap_controller_)}));
 }
 
@@ -37,9 +37,9 @@ template <>
 void MapBuilderContext<mapping::Submap3D>::EnqueueLocalSlamResultData(
     int trajectory_id, const std::string& sensor_id,
     const mapping::proto::LocalSlamResultData& local_slam_result_data) {
-  map_builder_server_->incoming_data_queue_.Push(common::make_unique<Data>(
+  map_builder_server_->incoming_data_queue_.Push(absl::make_unique<Data>(
       Data{trajectory_id,
-           common::make_unique<mapping::LocalSlamResult3D>(
+           absl::make_unique<mapping::LocalSlamResult3D>(
                sensor_id, local_slam_result_data, &submap_controller_)}));
 }
 

cartographer/cloud/internal/map_builder_context_impl.h

@@ -104,7 +104,7 @@ template <class SubmapType>
 void MapBuilderContext<SubmapType>::EnqueueSensorData(
     int trajectory_id, std::unique_ptr<sensor::Data> data) {
   map_builder_server_->incoming_data_queue_.Push(
-      common::make_unique<Data>(Data{trajectory_id, std::move(data)}));
+      absl::make_unique<Data>(Data{trajectory_id, std::move(data)}));
 }
 
 template <class SubmapType>

cartographer/cloud/internal/map_builder_server.cc

@@ -100,11 +100,11 @@ MapBuilderServer::MapBuilderServer(
   if (map_builder_server_options.map_builder_options()
           .use_trajectory_builder_2d()) {
     grpc_server_->SetExecutionContext(
-        common::make_unique<MapBuilderContext<mapping::Submap2D>>(this));
+        absl::make_unique<MapBuilderContext<mapping::Submap2D>>(this));
   } else if (map_builder_server_options.map_builder_options()
                  .use_trajectory_builder_3d()) {
     grpc_server_->SetExecutionContext(
-        common::make_unique<MapBuilderContext<mapping::Submap3D>>(this));
+        absl::make_unique<MapBuilderContext<mapping::Submap3D>>(this));
   } else {
     LOG(FATAL)
         << "Set either use_trajectory_builder_2d or use_trajectory_builder_3d";
@@ -166,7 +166,7 @@ void MapBuilderServer::StartSlamThread() {
   CHECK(!slam_thread_);
 
   // Start the SLAM processing thread.
-  slam_thread_ = common::make_unique<std::thread>(
+  slam_thread_ = absl::make_unique<std::thread>(
       [this]() { this->ProcessSensorDataQueue(); });
 }
 
@@ -183,7 +183,7 @@ void MapBuilderServer::OnLocalSlamResult(
   if (insertion_result &&
       grpc_server_->GetUnsynchronizedContext<MapBuilderContextInterface>()
           ->local_trajectory_uploader()) {
-    auto sensor_data = common::make_unique<proto::SensorData>();
+    auto sensor_data = absl::make_unique<proto::SensorData>();
     auto sensor_id =
         grpc_server_->GetUnsynchronizedContext<MapBuilderContextInterface>()
             ->local_trajectory_uploader()
@@ -204,14 +204,14 @@ void MapBuilderServer::OnLocalSlamResult(
   for (auto& entry : local_slam_subscriptions_[trajectory_id]) {
     auto copy_of_insertion_result =
         insertion_result
-            ? common::make_unique<
+            ? absl::make_unique<
                   const mapping::TrajectoryBuilderInterface::InsertionResult>(
                   *insertion_result)
             : nullptr;
     MapBuilderContextInterface::LocalSlamSubscriptionCallback callback =
         entry.second;
     if (!callback(
-            common::make_unique<MapBuilderContextInterface::LocalSlamResult>(
+            absl::make_unique<MapBuilderContextInterface::LocalSlamResult>(
                 MapBuilderContextInterface::LocalSlamResult{
                     trajectory_id, time, local_pose, shared_range_data,
                     std::move(copy_of_insertion_result)}))) {

cartographer/cloud/internal/testing/handler_test.h

@@ -17,8 +17,8 @@
 #ifndef CARTOGRAPHER_CLOUD_INTERNAL_TESTING_HANDLER_TEST_H
 #define CARTOGRAPHER_CLOUD_INTERNAL_TESTING_HANDLER_TEST_H
 
+#include "absl/memory/memory.h"
 #include "async_grpc/testing/rpc_handler_test_server.h"
-#include "cartographer/common/make_unique.h"
 #include "cartographer/mapping/internal/testing/mock_map_builder.h"
 #include "cartographer/mapping/internal/testing/mock_pose_graph.h"
 #include "gtest/gtest.h"
@@ -36,16 +36,16 @@ template <typename HandlerConcept, typename HandlerType>
 class HandlerTest : public Test {
  public:
   void SetUp() override {
-    test_server_ = common::make_unique<
+    test_server_ = absl::make_unique<
         async_grpc::testing::RpcHandlerTestServer<HandlerConcept, HandlerType>>(
-        common::make_unique<MockMapBuilderContext>());
+        absl::make_unique<MockMapBuilderContext>());
     mock_map_builder_context_ =
         test_server_
             ->template GetUnsynchronizedContext<MockMapBuilderContext>();
     mock_local_trajectory_uploader_ =
-        common::make_unique<MockLocalTrajectoryUploader>();
+        absl::make_unique<MockLocalTrajectoryUploader>();
-    mock_map_builder_ = common::make_unique<mapping::testing::MockMapBuilder>();
+    mock_map_builder_ = absl::make_unique<mapping::testing::MockMapBuilder>();
-    mock_pose_graph_ = common::make_unique<mapping::testing::MockPoseGraph>();
+    mock_pose_graph_ = absl::make_unique<mapping::testing::MockPoseGraph>();
 
     EXPECT_CALL(*mock_map_builder_context_, map_builder())
         .Times(::testing::AnyNumber())

cartographer/cloud/map_builder_server_interface.cc

@@ -1,7 +1,7 @@
 #include "cartographer/cloud/map_builder_server_interface.h"
 
+#include "absl/memory/memory.h"
 #include "cartographer/cloud/internal/map_builder_server.h"
-#include "cartographer/common/make_unique.h"
 
 namespace cartographer {
 namespace cloud {
@@ -13,7 +13,7 @@ void RegisterMapBuilderServerMetrics(metrics::FamilyFactory* factory) {
 std::unique_ptr<MapBuilderServerInterface> CreateMapBuilderServer(
     const proto::MapBuilderServerOptions& map_builder_server_options,
     std::unique_ptr<mapping::MapBuilderInterface> map_builder) {
-  return common::make_unique<MapBuilderServer>(map_builder_server_options,
+  return absl::make_unique<MapBuilderServer>(map_builder_server_options,
                                              std::move(map_builder));
 }
 

cartographer/cloud/map_builder_server_main.cc

@@ -54,7 +54,7 @@ void Run(const std::string& configuration_directory,
   // config.
   map_builder_server_options.mutable_map_builder_options()
       ->set_collate_by_trajectory(true);
-  auto map_builder = common::make_unique<mapping::MapBuilder>(
+  auto map_builder = absl::make_unique<mapping::MapBuilder>(
       map_builder_server_options.map_builder_options());
   std::unique_ptr<MapBuilderServerInterface> map_builder_server =
       CreateMapBuilderServer(map_builder_server_options,

cartographer/cloud/map_builder_server_options.cc

@@ -16,8 +16,8 @@
 
 #include "cartographer/cloud/map_builder_server_options.h"
 
+#include "absl/memory/memory.h"
 #include "cartographer/common/configuration_file_resolver.h"
-#include "cartographer/common/make_unique.h"
 #include "cartographer/mapping/map_builder.h"
 
 namespace cartographer {
@@ -49,7 +49,7 @@ proto::MapBuilderServerOptions CreateMapBuilderServerOptions(
 proto::MapBuilderServerOptions LoadMapBuilderServerOptions(
     const std::string& configuration_directory,
     const std::string& configuration_basename) {
-  auto file_resolver = common::make_unique<common::ConfigurationFileResolver>(
+  auto file_resolver = absl::make_unique<common::ConfigurationFileResolver>(
       std::vector<std::string>{configuration_directory});
   const std::string code =
       file_resolver->GetFileContentOrDie(configuration_basename);

cartographer/cloud/metrics/prometheus/family_factory.cc

@@ -16,7 +16,7 @@
 
 #include "cartographer/cloud/metrics/prometheus/family_factory.h"
 
-#include "cartographer/common/make_unique.h"
+#include "absl/memory/memory.h"
 #include "prometheus/counter.h"
 #include "prometheus/family.h"
 #include "prometheus/gauge.h"
@@ -51,7 +51,7 @@ class CounterFamily
 
   Counter* Add(const std::map<std::string, std::string>& labels) override {
     ::prometheus::Counter* counter = &prometheus_->Add(labels);
-    auto wrapper = common::make_unique<Counter>(counter);
+    auto wrapper = absl::make_unique<Counter>(counter);
     auto* ptr = wrapper.get();
     wrappers_.emplace_back(std::move(wrapper));
     return ptr;
@@ -84,7 +84,7 @@ class GaugeFamily
 
   Gauge* Add(const std::map<std::string, std::string>& labels) override {
     ::prometheus::Gauge* gauge = &prometheus_->Add(labels);
-    auto wrapper = common::make_unique<Gauge>(gauge);
+    auto wrapper = absl::make_unique<Gauge>(gauge);
     auto* ptr = wrapper.get();
     wrappers_.emplace_back(std::move(wrapper));
     return ptr;
@@ -115,7 +115,7 @@ class HistogramFamily : public ::cartographer::metrics::Family<
 
   Histogram* Add(const std::map<std::string, std::string>& labels) override {
     ::prometheus::Histogram* histogram = &prometheus_->Add(labels, boundaries_);
-    auto wrapper = common::make_unique<Histogram>(histogram);
+    auto wrapper = absl::make_unique<Histogram>(histogram);
     auto* ptr = wrapper.get();
     wrappers_.emplace_back(std::move(wrapper));
     return ptr;
@@ -139,7 +139,7 @@ FamilyFactory::NewCounterFamily(const std::string& name,
                      .Name(name)
                      .Help(description)
                      .Register(*registry_);
-  auto wrapper = common::make_unique<CounterFamily>(&family);
+  auto wrapper = absl::make_unique<CounterFamily>(&family);
   auto* ptr = wrapper.get();
   counters_.emplace_back(std::move(wrapper));
   return ptr;
@@ -152,7 +152,7 @@ FamilyFactory::NewGaugeFamily(const std::string& name,
                      .Name(name)
                      .Help(description)
                      .Register(*registry_);
-  auto wrapper = common::make_unique<GaugeFamily>(&family);
+  auto wrapper = absl::make_unique<GaugeFamily>(&family);
   auto* ptr = wrapper.get();
   gauges_.emplace_back(std::move(wrapper));
   return ptr;
@@ -166,7 +166,7 @@ FamilyFactory::NewHistogramFamily(const std::string& name,
                      .Name(name)
                      .Help(description)
                      .Register(*registry_);
-  auto wrapper = common::make_unique<HistogramFamily>(&family, boundaries);
+  auto wrapper = absl::make_unique<HistogramFamily>(&family, boundaries);
   auto* ptr = wrapper.get();
   histograms_.emplace_back(std::move(wrapper));
   return ptr;

cartographer/common/blocking_queue_test.cc

@@ -19,7 +19,7 @@
 #include <memory>
 #include <thread>
 
-#include "cartographer/common/make_unique.h"
+#include "absl/memory/memory.h"
 #include "cartographer/common/time.h"
 #include "gtest/gtest.h"
 
@@ -29,9 +29,9 @@ namespace {
 
 TEST(BlockingQueueTest, testPushPeekPop) {
   BlockingQueue<std::unique_ptr<int>> blocking_queue;
-  blocking_queue.Push(common::make_unique<int>(42));
+  blocking_queue.Push(absl::make_unique<int>(42));
   ASSERT_EQ(1, blocking_queue.Size());
-  blocking_queue.Push(common::make_unique<int>(24));
+  blocking_queue.Push(absl::make_unique<int>(24));
   ASSERT_EQ(2, blocking_queue.Size());
   EXPECT_EQ(42, *blocking_queue.Peek<int>());
   ASSERT_EQ(2, blocking_queue.Size());
@@ -60,10 +60,10 @@ TEST(BlockingQueueTest, testPopWithTimeout) {
 TEST(BlockingQueueTest, testPushWithTimeout) {
   BlockingQueue<std::unique_ptr<int>> blocking_queue(1);
   EXPECT_EQ(true,
-            blocking_queue.PushWithTimeout(common::make_unique<int>(42),
+            blocking_queue.PushWithTimeout(absl::make_unique<int>(42),
                                            common::FromMilliseconds(150)));
   EXPECT_EQ(false,
-            blocking_queue.PushWithTimeout(common::make_unique<int>(15),
+            blocking_queue.PushWithTimeout(absl::make_unique<int>(15),
                                            common::FromMilliseconds(150)));
   EXPECT_EQ(42, *blocking_queue.Pop());
   EXPECT_EQ(0, blocking_queue.Size());
@@ -72,10 +72,10 @@ TEST(BlockingQueueTest, testPushWithTimeout) {
 TEST(BlockingQueueTest, testPushWithTimeoutInfinteQueue) {
   BlockingQueue<std::unique_ptr<int>> blocking_queue;
   EXPECT_EQ(true,
-            blocking_queue.PushWithTimeout(common::make_unique<int>(42),
+            blocking_queue.PushWithTimeout(absl::make_unique<int>(42),
                                            common::FromMilliseconds(150)));
   EXPECT_EQ(true,
-            blocking_queue.PushWithTimeout(common::make_unique<int>(45),
+            blocking_queue.PushWithTimeout(absl::make_unique<int>(45),
                                            common::FromMilliseconds(150)));
   EXPECT_EQ(42, *blocking_queue.Pop());
   EXPECT_EQ(45, *blocking_queue.Pop());
@@ -91,7 +91,7 @@ TEST(BlockingQueueTest, testBlockingPop) {
   std::thread thread([&blocking_queue, &pop] { pop = *blocking_queue.Pop(); });
 
   std::this_thread::sleep_for(common::FromMilliseconds(100));
-  blocking_queue.Push(common::make_unique<int>(42));
+  blocking_queue.Push(absl::make_unique<int>(42));
   thread.join();
   ASSERT_EQ(0, blocking_queue.Size());
   EXPECT_EQ(42, pop);
@@ -108,7 +108,7 @@ TEST(BlockingQueueTest, testBlockingPopWithTimeout) {
   });
 
   std::this_thread::sleep_for(common::FromMilliseconds(100));
-  blocking_queue.Push(common::make_unique<int>(42));
+  blocking_queue.Push(absl::make_unique<int>(42));
   thread.join();
   ASSERT_EQ(0, blocking_queue.Size());
   EXPECT_EQ(42, pop);

cartographer/common/configuration_files_test.cc

@@ -32,8 +32,8 @@ TEST(ConfigurationFilesTest, ValidateMapBuilderOptions) {
       MAP_BUILDER.use_trajectory_builder_2d = true
       return MAP_BUILDER)text";
   EXPECT_NO_FATAL_FAILURE({
-    auto file_resolver = ::cartographer::common::make_unique<
+    auto file_resolver =
-        ::cartographer::common::ConfigurationFileResolver>(
+        ::absl::make_unique< ::cartographer::common::ConfigurationFileResolver>(
             std::vector<std::string>{
                 std::string(::cartographer::common::kSourceDirectory) +
                 "/configuration_files"});
@@ -49,8 +49,8 @@ TEST(ConfigurationFilesTest, ValidateTrajectoryBuilderOptions) {
       TRAJECTORY_BUILDER.trajectory_builder_2d.use_imu_data = false
       return TRAJECTORY_BUILDER)text";
   EXPECT_NO_FATAL_FAILURE({
-    auto file_resolver = ::cartographer::common::make_unique<
+    auto file_resolver =
-        ::cartographer::common::ConfigurationFileResolver>(
+        ::absl::make_unique< ::cartographer::common::ConfigurationFileResolver>(
             std::vector<std::string>{
                 std::string(::cartographer::common::kSourceDirectory) +
                 "/configuration_files"});

cartographer/common/internal/testing/thread_pool_for_testing.cc

@@ -21,7 +21,7 @@
 #include <chrono>
 #include <numeric>
 
-#include "cartographer/common/make_unique.h"
+#include "absl/memory/memory.h"
 #include "cartographer/common/task.h"
 #include "cartographer/common/time.h"
 #include "glog/logging.h"

cartographer/common/lockless_queue.h

@@ -20,7 +20,7 @@
 #include <atomic>
 #include <memory>
 
-#include "cartographer/common/make_unique.h"
+#include "absl/memory/memory.h"
 #include "glog/logging.h"
 
 namespace cartographer {

cartographer/common/lockless_queue_test.cc

@@ -7,13 +7,13 @@ namespace {
 
 TEST(LocklessQueueTest, PushAndPop) {
   LocklessQueue<int> queue;
-  queue.Push(common::make_unique<int>(1));
+  queue.Push(absl::make_unique<int>(1));
-  queue.Push(common::make_unique<int>(2));
+  queue.Push(absl::make_unique<int>(2));
   EXPECT_EQ(*queue.Pop(), 1);
-  queue.Push(common::make_unique<int>(3));
+  queue.Push(absl::make_unique<int>(3));
-  queue.Push(common::make_unique<int>(4));
+  queue.Push(absl::make_unique<int>(4));
   EXPECT_EQ(*queue.Pop(), 2);
-  queue.Push(common::make_unique<int>(5));
+  queue.Push(absl::make_unique<int>(5));
   EXPECT_EQ(*queue.Pop(), 3);
   EXPECT_EQ(*queue.Pop(), 4);
   EXPECT_EQ(*queue.Pop(), 5);

cartographer/common/lua_parameter_dictionary_test.cc

@@ -20,8 +20,8 @@
 #include <cmath>
 #include <memory>
 
+#include "absl/memory/memory.h"
 #include "cartographer/common/lua_parameter_dictionary_test_helpers.h"
-#include "cartographer/common/make_unique.h"
 #include "gtest/gtest.h"
 
 namespace cartographer {
@@ -31,7 +31,7 @@ namespace {
 std::unique_ptr<LuaParameterDictionary> MakeNonReferenceCounted(
     const std::string& code) {
   return LuaParameterDictionary::NonReferenceCounted(
-      code, common::make_unique<DummyFileResolver>());
+      code, absl::make_unique<DummyFileResolver>());
 }
 
 class LuaParameterDictionaryTest : public ::testing::Test {

cartographer/common/lua_parameter_dictionary_test_helpers.h

@@ -20,8 +20,8 @@
 #include <memory>
 #include <string>
 
+#include "absl/memory/memory.h"
 #include "cartographer/common/lua_parameter_dictionary.h"
-#include "cartographer/common/make_unique.h"
 #include "cartographer/common/port.h"
 #include "glog/logging.h"
 
@@ -48,8 +48,8 @@ class DummyFileResolver : public FileResolver {
 
 std::unique_ptr<LuaParameterDictionary> MakeDictionary(
     const std::string& code) {
-  return common::make_unique<LuaParameterDictionary>(
+  return absl::make_unique<LuaParameterDictionary>(
-      code, common::make_unique<DummyFileResolver>());
+      code, absl::make_unique<DummyFileResolver>());
 }
 
 }  // namespace common

cartographer/common/make_unique.h

@@ -1,62 +0,0 @@
-/*
- * Copyright 2016 The Cartographer Authors
- *
- * 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.
- */
-
-#ifndef CARTOGRAPHER_COMMON_MAKE_UNIQUE_H_
-#define CARTOGRAPHER_COMMON_MAKE_UNIQUE_H_
-
-#include <cstddef>
-#include <memory>
-#include <type_traits>
-#include <utility>
-
-namespace cartographer {
-namespace common {
-
-// Implementation of c++14's std::make_unique, taken from
-// https://isocpp.org/files/papers/N3656.txt
-template <class T>
-struct _Unique_if {
-  typedef std::unique_ptr<T> _Single_object;
-};
-
-template <class T>
-struct _Unique_if<T[]> {
-  typedef std::unique_ptr<T[]> _Unknown_bound;
-};
-
-template <class T, size_t N>
-struct _Unique_if<T[N]> {
-  typedef void _Known_bound;
-};
-
-template <class T, class... Args>
-typename _Unique_if<T>::_Single_object make_unique(Args&&... args) {
-  return std::unique_ptr<T>(new T(std::forward<Args>(args)...));
-}
-
-template <class T>
-typename _Unique_if<T>::_Unknown_bound make_unique(size_t n) {
-  typedef typename std::remove_extent<T>::type U;
-  return std::unique_ptr<T>(new U[n]());
-}
-
-template <class T, class... Args>
-typename _Unique_if<T>::_Known_bound make_unique(Args&&...) = delete;
-
-}  // namespace common
-}  // namespace cartographer
-
-#endif  // CARTOGRAPHER_COMMON_MAKE_UNIQUE_H_

cartographer/common/optional.h

@@ -0,0 +1,69 @@
+/*
+ * Copyright 2017 The Cartographer Authors
+ *
+ * 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.
+ */
+
+#ifndef CARTOGRAPHER_COMMON_OPTIONAL_H_
+#define CARTOGRAPHER_COMMON_OPTIONAL_H_
+
+#include <memory>
+
+#include "absl/memory/memory.h"
+#include "glog/logging.h"
+
+namespace cartographer {
+namespace common {
+
+template <class T>
+class optional {
+ public:
+  optional() {}
+
+  optional(const optional& other) {
+    if (other.has_value()) {
+      value_ = absl::make_unique<T>(other.value());
+    }
+  }
+
+  explicit optional(const T& value) { value_ = absl::make_unique<T>(value); }
+
+  bool has_value() const { return value_ != nullptr; }
+
+  const T& value() const {
+    CHECK(value_ != nullptr);
+    return *value_;
+  }
+
+  optional<T>& operator=(const T& other_value) {
+    this->value_ = absl::make_unique<T>(other_value);
+    return *this;
+  }
+
+  optional<T>& operator=(const optional<T>& other) {
+    if (!other.has_value()) {
+      this->value_ = nullptr;
+    } else {
+      this->value_ = absl::make_unique<T>(other.value());
+    }
+    return *this;
+  }
+
+ private:
+  std::unique_ptr<T> value_;
+};
+
+}  // namespace common
+}  // namespace cartographer
+
+#endif  // CARTOGRAPHER_COMMON_OPTIONAL_H_

cartographer/common/task_test.cc

@@ -19,7 +19,7 @@
 #include <memory>
 #include <queue>
 
-#include "cartographer/common/make_unique.h"
+#include "absl/memory/memory.h"
 #include "gmock/gmock.h"
 #include "gtest/gtest.h"
 
@@ -71,7 +71,7 @@ class TaskTest : public ::testing::Test {
 };
 
 TEST_F(TaskTest, RunTask) {
-  auto a = make_unique<Task>();
+  auto a = absl::make_unique<Task>();
   MockCallback callback;
   a->SetWorkItem([&callback]() { callback.Run(); });
   EXPECT_EQ(a->GetState(), Task::NEW);
@@ -85,8 +85,8 @@ TEST_F(TaskTest, RunTask) {
 }
 
 TEST_F(TaskTest, RunTaskWithDependency) {
-  auto a = make_unique<Task>();
+  auto a = absl::make_unique<Task>();
-  auto b = make_unique<Task>();
+  auto b = absl::make_unique<Task>();
   MockCallback callback_a;
   a->SetWorkItem([&callback_a]() { callback_a.Run(); });
   MockCallback callback_b;
@@ -116,10 +116,10 @@ TEST_F(TaskTest, RunTaskWithTwoDependency) {
   /*         c \
    *  a -->  b --> d
    */
-  auto a = make_unique<Task>();
+  auto a = absl::make_unique<Task>();
-  auto b = make_unique<Task>();
+  auto b = absl::make_unique<Task>();
-  auto c = make_unique<Task>();
+  auto c = absl::make_unique<Task>();
-  auto d = make_unique<Task>();
+  auto d = absl::make_unique<Task>();
   MockCallback callback_a;
   a->SetWorkItem([&callback_a]() { callback_a.Run(); });
   MockCallback callback_b;
@@ -159,7 +159,7 @@ TEST_F(TaskTest, RunTaskWithTwoDependency) {
 }
 
 TEST_F(TaskTest, RunWithCompletedDependency) {
-  auto a = make_unique<Task>();
+  auto a = absl::make_unique<Task>();
   MockCallback callback_a;
   a->SetWorkItem([&callback_a]() { callback_a.Run(); });
   auto shared_a = thread_pool()->Schedule(std::move(a)).lock();
@@ -168,7 +168,7 @@ TEST_F(TaskTest, RunWithCompletedDependency) {
   EXPECT_CALL(callback_a, Run()).Times(1);
   thread_pool()->RunNext();
   EXPECT_EQ(shared_a->GetState(), Task::COMPLETED);
-  auto b = make_unique<Task>();
+  auto b = absl::make_unique<Task>();
   MockCallback callback_b;
   b->SetWorkItem([&callback_b]() { callback_b.Run(); });
   b->AddDependency(shared_a);

cartographer/common/thread_pool.cc

@@ -21,7 +21,7 @@
 #include <chrono>
 #include <numeric>
 
-#include "cartographer/common/make_unique.h"
+#include "absl/memory/memory.h"
 #include "cartographer/common/task.h"
 #include "glog/logging.h"
 

cartographer/common/thread_pool_test.cc

@@ -18,7 +18,7 @@
 
 #include <vector>
 
-#include "cartographer/common/make_unique.h"
+#include "absl/memory/memory.h"
 #include "gtest/gtest.h"
 
 namespace cartographer {
@@ -47,7 +47,7 @@ class Receiver {
 TEST(ThreadPoolTest, RunTask) {
   ThreadPool pool(1);
   Receiver receiver;
-  auto task = common::make_unique<Task>();
+  auto task = absl::make_unique<Task>();
   task->SetWorkItem([&receiver]() { receiver.Receive(1); });
   pool.Schedule(std::move(task));
   receiver.WaitForNumberSequence({1});
@@ -59,7 +59,7 @@ TEST(ThreadPoolTest, ManyTasks) {
     Receiver receiver;
     int kNumTasks = 10;
     for (int i = 0; i < kNumTasks; ++i) {
-      auto task = common::make_unique<Task>();
+      auto task = absl::make_unique<Task>();
       task->SetWorkItem([&receiver]() { receiver.Receive(1); });
       pool.Schedule(std::move(task));
     }
@@ -70,9 +70,9 @@ TEST(ThreadPoolTest, ManyTasks) {
 TEST(ThreadPoolTest, RunWithDependency) {
   ThreadPool pool(2);
   Receiver receiver;
-  auto task_2 = common::make_unique<Task>();
+  auto task_2 = absl::make_unique<Task>();
   task_2->SetWorkItem([&receiver]() { receiver.Receive(2); });
-  auto task_1 = common::make_unique<Task>();
+  auto task_1 = absl::make_unique<Task>();
   task_1->SetWorkItem([&receiver]() { receiver.Receive(1); });
   auto weak_task_1 = pool.Schedule(std::move(task_1));
   task_2->AddDependency(weak_task_1);
@@ -83,10 +83,10 @@ TEST(ThreadPoolTest, RunWithDependency) {
 TEST(ThreadPoolTest, RunWithOutOfScopeDependency) {
   ThreadPool pool(2);
   Receiver receiver;
-  auto task_2 = common::make_unique<Task>();
+  auto task_2 = absl::make_unique<Task>();
   task_2->SetWorkItem([&receiver]() { receiver.Receive(2); });
   {
-    auto task_1 = common::make_unique<Task>();
+    auto task_1 = absl::make_unique<Task>();
     task_1->SetWorkItem([&receiver]() { receiver.Receive(1); });
     auto weak_task_1 = pool.Schedule(std::move(task_1));
     task_2->AddDependency(weak_task_1);
@@ -100,10 +100,10 @@ TEST(ThreadPoolTest, ManyDependencies) {
     ThreadPool pool(5);
     Receiver receiver;
     int kNumDependencies = 10;
-    auto task = common::make_unique<Task>();
+    auto task = absl::make_unique<Task>();
     task->SetWorkItem([&receiver]() { receiver.Receive(1); });
     for (int i = 0; i < kNumDependencies; ++i) {
-      auto dependency_task = common::make_unique<Task>();
+      auto dependency_task = absl::make_unique<Task>();
       dependency_task->SetWorkItem([]() {});
       task->AddDependency(pool.Schedule(std::move(dependency_task)));
     }
@@ -117,11 +117,11 @@ TEST(ThreadPoolTest, ManyDependants) {
     ThreadPool pool(5);
     Receiver receiver;
     int kNumDependants = 10;
-    auto dependency_task = common::make_unique<Task>();
+    auto dependency_task = absl::make_unique<Task>();
     dependency_task->SetWorkItem([]() {});
     auto dependency_handle = pool.Schedule(std::move(dependency_task));
     for (int i = 0; i < kNumDependants; ++i) {
-      auto task = common::make_unique<Task>();
+      auto task = absl::make_unique<Task>();
       task->AddDependency(dependency_handle);
       task->SetWorkItem([&receiver]() { receiver.Receive(1); });
       pool.Schedule(std::move(task));
@@ -133,13 +133,13 @@ TEST(ThreadPoolTest, ManyDependants) {
 TEST(ThreadPoolTest, RunWithMultipleDependencies) {
   ThreadPool pool(2);
   Receiver receiver;
-  auto task_1 = common::make_unique<Task>();
+  auto task_1 = absl::make_unique<Task>();
   task_1->SetWorkItem([&receiver]() { receiver.Receive(1); });
-  auto task_2a = common::make_unique<Task>();
+  auto task_2a = absl::make_unique<Task>();
   task_2a->SetWorkItem([&receiver]() { receiver.Receive(2); });
-  auto task_2b = common::make_unique<Task>();
+  auto task_2b = absl::make_unique<Task>();
   task_2b->SetWorkItem([&receiver]() { receiver.Receive(2); });
-  auto task_3 = common::make_unique<Task>();
+  auto task_3 = absl::make_unique<Task>();
   task_3->SetWorkItem([&receiver]() { receiver.Receive(3); });
   /*          -> task_2a \
    *  task_1 /-> task_2b --> task_3
@@ -159,9 +159,9 @@ TEST(ThreadPoolTest, RunWithMultipleDependencies) {
 TEST(ThreadPoolTest, RunWithFinishedDependency) {
   ThreadPool pool(2);
   Receiver receiver;
-  auto task_1 = common::make_unique<Task>();
+  auto task_1 = absl::make_unique<Task>();
   task_1->SetWorkItem([&receiver]() { receiver.Receive(1); });
-  auto task_2 = common::make_unique<Task>();
+  auto task_2 = absl::make_unique<Task>();
   task_2->SetWorkItem([&receiver]() { receiver.Receive(2); });
   auto weak_task_1 = pool.Schedule(std::move(task_1));
   task_2->AddDependency(weak_task_1);

cartographer/io/coloring_points_processor.cc

@@ -17,7 +17,7 @@
 #include "cartographer/io/coloring_points_processor.h"
 
 #include "Eigen/Core"
-#include "cartographer/common/make_unique.h"
+#include "absl/memory/memory.h"
 #include "glog/logging.h"
 
 namespace cartographer {
@@ -33,7 +33,7 @@ ColoringPointsProcessor::FromDictionary(
   const Uint8Color color = {{static_cast<uint8>(color_values[0]),
                              static_cast<uint8>(color_values[1]),
                              static_cast<uint8>(color_values[2])}};
-  return common::make_unique<ColoringPointsProcessor>(ToFloatColor(color),
+  return absl::make_unique<ColoringPointsProcessor>(ToFloatColor(color),
                                                     frame_id, next);
 }
 

cartographer/io/counting_points_processor.cc

@@ -16,7 +16,7 @@
 
 #include "cartographer/io/counting_points_processor.h"
 
-#include "cartographer/common/make_unique.h"
+#include "absl/memory/memory.h"
 #include "glog/logging.h"
 
 namespace cartographer {
@@ -29,7 +29,7 @@ std::unique_ptr<CountingPointsProcessor>
 CountingPointsProcessor::FromDictionary(
     common::LuaParameterDictionary* const dictionary,
     PointsProcessor* const next) {
-  return common::make_unique<CountingPointsProcessor>(next);
+  return absl::make_unique<CountingPointsProcessor>(next);
 }
 
 void CountingPointsProcessor::Process(std::unique_ptr<PointsBatch> batch) {

cartographer/io/fixed_ratio_sampling_points_processor.cc

@@ -17,7 +17,7 @@
 #include "cartographer/io/fixed_ratio_sampling_points_processor.h"
 
 #include "Eigen/Core"
-#include "cartographer/common/make_unique.h"
+#include "absl/memory/memory.h"
 #include "glog/logging.h"
 
 namespace cartographer {
@@ -30,7 +30,7 @@ FixedRatioSamplingPointsProcessor::FromDictionary(
   const double sampling_ratio(dictionary->GetDouble("sampling_ratio"));
   CHECK_LT(0., sampling_ratio) << "Sampling ratio <= 0 makes no sense.";
   CHECK_LT(sampling_ratio, 1.) << "Sampling ratio >= 1 makes no sense.";
-  return common::make_unique<FixedRatioSamplingPointsProcessor>(sampling_ratio,
+  return absl::make_unique<FixedRatioSamplingPointsProcessor>(sampling_ratio,
                                                               next);
 }
 
@@ -58,8 +58,7 @@ PointsProcessor::FlushResult FixedRatioSamplingPointsProcessor::Flush() {
       return PointsProcessor::FlushResult::kFinished;
 
     case PointsProcessor::FlushResult::kRestartStream:
-      sampler_ =
+      sampler_ = absl::make_unique<common::FixedRatioSampler>(sampling_ratio_);
-          common::make_unique<common::FixedRatioSampler>(sampling_ratio_);
       return PointsProcessor::FlushResult::kRestartStream;
   }
   LOG(FATAL);

cartographer/io/frame_id_filtering_points_processor.cc

@@ -16,8 +16,8 @@
 
 #include "cartographer/io/frame_id_filtering_points_processor.h"
 
+#include "absl/memory/memory.h"
 #include "cartographer/common/lua_parameter_dictionary.h"
-#include "cartographer/common/make_unique.h"
 #include "cartographer/io/points_batch.h"
 #include "glog/logging.h"
 
@@ -36,7 +36,7 @@ FrameIdFilteringPointsProcessor::FromDictionary(
     drop_frames =
         dictionary->GetDictionary("drop_frames")->GetArrayValuesAsStrings();
   }
-  return common::make_unique<FrameIdFilteringPointsProcessor>(
+  return absl::make_unique<FrameIdFilteringPointsProcessor>(
       std::unordered_set<std::string>(keep_frames.begin(), keep_frames.end()),
       std::unordered_set<std::string>(drop_frames.begin(), drop_frames.end()),
       next);

cartographer/io/hybrid_grid_points_processor.cc

@@ -4,7 +4,7 @@
 #include <string>
 
 #include "Eigen/Core"
-#include "cartographer/common/make_unique.h"
+#include "absl/memory/memory.h"
 #include "cartographer/io/file_writer.h"
 #include "cartographer/io/points_batch.h"
 #include "cartographer/io/points_processor.h"
@@ -31,7 +31,7 @@ HybridGridPointsProcessor::FromDictionary(
     const FileWriterFactory& file_writer_factory,
     common::LuaParameterDictionary* const dictionary,
     PointsProcessor* const next) {
-  return common::make_unique<HybridGridPointsProcessor>(
+  return absl::make_unique<HybridGridPointsProcessor>(
       dictionary->GetDouble("voxel_size"),
       mapping::CreateRangeDataInserterOptions3D(
           dictionary->GetDictionary("range_data_inserter").get()),

cartographer/io/intensity_to_color_points_processor.cc

@@ -17,7 +17,7 @@
 #include "cartographer/io/intensity_to_color_points_processor.h"
 
 #include "Eigen/Core"
-#include "cartographer/common/make_unique.h"
+#include "absl/memory/memory.h"
 #include "cartographer/common/math.h"
 #include "glog/logging.h"
 
@@ -32,7 +32,7 @@ IntensityToColorPointsProcessor::FromDictionary(
       dictionary->HasKey("frame_id") ? dictionary->GetString("frame_id") : "";
   const float min_intensity = dictionary->GetDouble("min_intensity");
   const float max_intensity = dictionary->GetDouble("max_intensity");
-  return common::make_unique<IntensityToColorPointsProcessor>(
+  return absl::make_unique<IntensityToColorPointsProcessor>(
       min_intensity, max_intensity, frame_id, next);
 }
 

cartographer/io/internal/in_memory_proto_stream.h

@@ -19,7 +19,7 @@
 
 #include <queue>
 
-#include "cartographer/common/make_unique.h"
+#include "absl/memory/memory.h"
 #include "cartographer/common/port.h"
 #include "cartographer/io/proto_stream_interface.h"
 #include "google/protobuf/message.h"
@@ -62,7 +62,7 @@ class InMemoryProtoStreamReader
 
   template <typename MessageType>
   void AddProto(const MessageType& proto) {
-    state_chunks_.push(common::make_unique<MessageType>(proto));
+    state_chunks_.push(absl::make_unique<MessageType>(proto));
   }
 
   bool ReadProto(google::protobuf::Message* proto) override;

cartographer/io/internal/in_memory_proto_stream_test.cc

@@ -24,7 +24,7 @@ namespace cartographer {
 namespace io {
 namespace {
 
-using common::make_unique;
+using absl::make_unique;
 using google::protobuf::Message;
 using mapping::proto::PoseGraph;
 using mapping::proto::SerializedData;

cartographer/io/min_max_range_filtering_points_processor.cc

@@ -16,8 +16,8 @@
 
 #include "cartographer/io/min_max_range_filtering_points_processor.h"
 
+#include "absl/memory/memory.h"
 #include "cartographer/common/lua_parameter_dictionary.h"
-#include "cartographer/common/make_unique.h"
 #include "cartographer/io/points_batch.h"
 
 namespace cartographer {
@@ -27,7 +27,7 @@ std::unique_ptr<MinMaxRangeFiteringPointsProcessor>
 MinMaxRangeFiteringPointsProcessor::FromDictionary(
     common::LuaParameterDictionary* const dictionary,
     PointsProcessor* const next) {
-  return common::make_unique<MinMaxRangeFiteringPointsProcessor>(
+  return absl::make_unique<MinMaxRangeFiteringPointsProcessor>(
       dictionary->GetDouble("min_range"), dictionary->GetDouble("max_range"),
       next);
 }

cartographer/io/outlier_removing_points_processor.cc

@@ -16,8 +16,8 @@
 
 #include "cartographer/io/outlier_removing_points_processor.h"
 
+#include "absl/memory/memory.h"
 #include "cartographer/common/lua_parameter_dictionary.h"
-#include "cartographer/common/make_unique.h"
 #include "glog/logging.h"
 
 namespace cartographer {
@@ -27,7 +27,7 @@ std::unique_ptr<OutlierRemovingPointsProcessor>
 OutlierRemovingPointsProcessor::FromDictionary(
     common::LuaParameterDictionary* const dictionary,
     PointsProcessor* const next) {
-  return common::make_unique<OutlierRemovingPointsProcessor>(
+  return absl::make_unique<OutlierRemovingPointsProcessor>(
       dictionary->GetDouble("voxel_size"), next);
 }
 

cartographer/io/pcd_writing_points_processor.cc

@@ -20,8 +20,8 @@
 #include <sstream>
 #include <string>
 
+#include "absl/memory/memory.h"
 #include "cartographer/common/lua_parameter_dictionary.h"
-#include "cartographer/common/make_unique.h"
 #include "cartographer/io/points_batch.h"
 #include "glog/logging.h"
 
@@ -82,7 +82,7 @@ PcdWritingPointsProcessor::FromDictionary(
     FileWriterFactory file_writer_factory,
     common::LuaParameterDictionary* const dictionary,
     PointsProcessor* const next) {
-  return common::make_unique<PcdWritingPointsProcessor>(
+  return absl::make_unique<PcdWritingPointsProcessor>(
       file_writer_factory(dictionary->GetString("filename")), next);
 }
 

cartographer/io/ply_writing_points_processor.cc

@@ -20,8 +20,8 @@
 #include <sstream>
 #include <string>
 
+#include "absl/memory/memory.h"
 #include "cartographer/common/lua_parameter_dictionary.h"
-#include "cartographer/common/make_unique.h"
 #include "cartographer/io/points_batch.h"
 #include "glog/logging.h"
 
@@ -85,7 +85,7 @@ PlyWritingPointsProcessor::FromDictionary(
     const FileWriterFactory& file_writer_factory,
     common::LuaParameterDictionary* const dictionary,
     PointsProcessor* const next) {
-  return common::make_unique<PlyWritingPointsProcessor>(
+  return absl::make_unique<PlyWritingPointsProcessor>(
       file_writer_factory(dictionary->GetString("filename")), next);
 }
 

cartographer/io/points_processor_pipeline_builder.cc

@@ -16,7 +16,7 @@
 
 #include "cartographer/io/points_processor_pipeline_builder.h"
 
-#include "cartographer/common/make_unique.h"
+#include "absl/memory/memory.h"
 #include "cartographer/io/coloring_points_processor.h"
 #include "cartographer/io/counting_points_processor.h"
 #include "cartographer/io/fixed_ratio_sampling_points_processor.h"
@@ -118,7 +118,7 @@ PointsProcessorPipelineBuilder::CreatePipeline(
   // The last consumer in the pipeline must exist, so that the one created after
   // it (and being before it in the pipeline) has a valid 'next' to point to.
   // The last consumer will just drop all points.
-  pipeline.emplace_back(common::make_unique<NullPointsProcessor>());
+  pipeline.emplace_back(absl::make_unique<NullPointsProcessor>());
 
   std::vector<std::unique_ptr<common::LuaParameterDictionary>> configurations =
       dictionary->GetArrayValuesAsDictionaries();

cartographer/io/probability_grid_points_processor.cc

@@ -17,8 +17,8 @@
 #include "cartographer/io/probability_grid_points_processor.h"
 
 #include "Eigen/Core"
+#include "absl/memory/memory.h"
 #include "cartographer/common/lua_parameter_dictionary.h"
-#include "cartographer/common/make_unique.h"
 #include "cartographer/common/math.h"
 #include "cartographer/io/draw_trajectories.h"
 #include "cartographer/io/image.h"
@@ -113,7 +113,7 @@ ProbabilityGridPointsProcessor::FromDictionary(
       dictionary->HasKey("output_type")
           ? OutputTypeFromString(dictionary->GetString("output_type"))
           : OutputType::kPng;
-  return common::make_unique<ProbabilityGridPointsProcessor>(
+  return absl::make_unique<ProbabilityGridPointsProcessor>(
       dictionary->GetDouble("resolution"),
       mapping::CreateProbabilityGridRangeDataInserterOptions2D(
           dictionary->GetDictionary("range_data_inserter").get()),
@@ -178,7 +178,7 @@ std::unique_ptr<Image> DrawProbabilityGrid(
     LOG(WARNING) << "Not writing output: empty probability grid";
     return nullptr;
   }
-  auto image = common::make_unique<Image>(cell_limits.num_x_cells,
+  auto image = absl::make_unique<Image>(cell_limits.num_x_cells,
                                         cell_limits.num_y_cells);
   for (const Eigen::Array2i& xy_index :
        mapping::XYIndexRangeIterator(cell_limits)) {

cartographer/io/probability_grid_points_processor_test.cc

@@ -32,7 +32,7 @@ namespace io {
 namespace {
 
 std::unique_ptr<PointsBatch> CreatePointsBatch() {
-  auto points_batch = cartographer::common::make_unique<PointsBatch>();
+  auto points_batch = ::absl::make_unique<PointsBatch>();
   points_batch->origin = Eigen::Vector3f(0, 0, 0);
   points_batch->points.emplace_back(0.0f, 0.0f, 0.0f);
   points_batch->points.emplace_back(0.0f, 1.0f, 2.0f);
@@ -48,9 +48,8 @@ std::unique_ptr<PointsBatch> CreatePointsBatch() {
   return [&fake_file_writer_output,
           &expected_filename](const std::string& full_filename) {
     EXPECT_EQ(expected_filename, full_filename);
-    return ::cartographer::common::make_unique<
+    return ::absl::make_unique<::cartographer::io::FakeFileWriter>(
-        ::cartographer::io::FakeFileWriter>(full_filename,
+        full_filename, fake_file_writer_output);
-                                            fake_file_writer_output);
   };
 }
 
@@ -59,8 +58,8 @@ CreatePipelineFromDictionary(
     common::LuaParameterDictionary* const pipeline_dictionary,
     const std::vector<mapping::proto::Trajectory>& trajectories,
     ::cartographer::io::FileWriterFactory file_writer_factory) {
-  auto builder = ::cartographer::common::make_unique<
+  auto builder =
-      ::cartographer::io::PointsProcessorPipelineBuilder>();
+      ::absl::make_unique<::cartographer::io::PointsProcessorPipelineBuilder>();
   builder->Register(
       ProbabilityGridPointsProcessor::kConfigurationFileActionName,
       [&trajectories, file_writer_factory](
@@ -115,7 +114,7 @@ std::unique_ptr<common::LuaParameterDictionary> CreateParameterDictionary() {
           } 
           return pipeline
     )text",
-          common::make_unique<cartographer::common::DummyFileResolver>());
+          absl::make_unique<cartographer::common::DummyFileResolver>());
   return parameter_dictionary;
 }
 

cartographer/io/proto_stream_deserializer_test.cc

@@ -29,7 +29,6 @@ namespace cartographer {
 namespace io {
 namespace {
 
-using ::cartographer::common::make_unique;
 using ::cartographer::io::testing::ProtoFromStringOrDie;
 using ::cartographer::io::testing::ProtoReaderFromStrings;
 using ::cartographer::mapping::proto::SerializationHeader;
@@ -134,7 +133,7 @@ TEST_F(ProtoStreamDeserializerTest, WorksOnGoldenTextStream) {
 TEST_F(ProtoStreamDeserializerTest, FailsIfVersionNotSupported) {
   reader_ =
       ProtoReaderFromStrings(kUnsupportedSerializationHeaderProtoString, {});
-  EXPECT_DEATH(common::make_unique<ProtoStreamDeserializer>(reader_.get()),
+  EXPECT_DEATH(absl::make_unique<ProtoStreamDeserializer>(reader_.get()),
                "Unsupported serialization format");
 }
 

cartographer/io/testing/test_helpers.cc

@@ -25,17 +25,17 @@ std::unique_ptr<InMemoryProtoStreamReader> ProtoReaderFromStrings(
     const std::string &header_textpb,
     const std::initializer_list<std::string> &data_textpbs) {
   std::queue<std::unique_ptr<::google::protobuf::Message>> proto_queue;
-  proto_queue.emplace(common::make_unique<
+  proto_queue.emplace(absl::make_unique<
                       ::cartographer::mapping::proto::SerializationHeader>(
       ProtoFromStringOrDie<::cartographer::mapping::proto::SerializationHeader>(
           header_textpb)));
   for (const std::string &data_textpb : data_textpbs) {
     proto_queue.emplace(
-        common::make_unique<::cartographer::mapping::proto::SerializedData>(
+        absl::make_unique<::cartographer::mapping::proto::SerializedData>(
             ProtoFromStringOrDie<
                 ::cartographer::mapping::proto::SerializedData>(data_textpb)));
   }
-  return common::make_unique<InMemoryProtoStreamReader>(std::move(proto_queue));
+  return absl::make_unique<InMemoryProtoStreamReader>(std::move(proto_queue));
 }
 
 }  // namespace testing

cartographer/io/xray_points_processor.cc

@@ -20,8 +20,8 @@
 #include <string>
 
 #include "Eigen/Core"
+#include "absl/memory/memory.h"
 #include "cartographer/common/lua_parameter_dictionary.h"
-#include "cartographer/common/make_unique.h"
 #include "cartographer/common/math.h"
 #include "cartographer/io/draw_trajectories.h"
 #include "cartographer/io/image.h"
@@ -133,7 +133,7 @@ std::unique_ptr<XRayPointsProcessor> XRayPointsProcessor::FromDictionary(
     floors = mapping::DetectFloors(trajectories.at(0));
   }
 
-  return common::make_unique<XRayPointsProcessor>(
+  return absl::make_unique<XRayPointsProcessor>(
       dictionary->GetDouble("voxel_size"),
       transform::FromDictionary(dictionary->GetDictionary("transform").get())
           .cast<float>(),

cartographer/io/xyz_writing_points_processor.cc

@@ -2,7 +2,7 @@
 
 #include <iomanip>
 
-#include "cartographer/common/make_unique.h"
+#include "absl/memory/memory.h"
 #include "glog/logging.h"
 
 namespace cartographer {
@@ -30,7 +30,7 @@ XyzWriterPointsProcessor::FromDictionary(
     const FileWriterFactory& file_writer_factory,
     common::LuaParameterDictionary* const dictionary,
     PointsProcessor* const next) {
-  return common::make_unique<XyzWriterPointsProcessor>(
+  return absl::make_unique<XyzWriterPointsProcessor>(
       file_writer_factory(dictionary->GetString("filename")), next);
 }
 

cartographer/mapping/2d/probability_grid.cc

@@ -17,7 +17,7 @@
 
 #include <limits>
 
-#include "cartographer/common/make_unique.h"
+#include "absl/memory/memory.h"
 #include "cartographer/mapping/probability_values.h"
 #include "cartographer/mapping/submaps.h"
 
@@ -92,7 +92,7 @@ std::unique_ptr<Grid2D> ProbabilityGrid::ComputeCroppedGrid() const {
   const Eigen::Vector2d max =
       limits().max() - resolution * Eigen::Vector2d(offset.y(), offset.x());
   std::unique_ptr<ProbabilityGrid> cropped_grid =
-      common::make_unique<ProbabilityGrid>(
+      absl::make_unique<ProbabilityGrid>(
           MapLimits(resolution, max, cell_limits), conversion_tables_);
   for (const Eigen::Array2i& xy_index : XYIndexRangeIterator(cell_limits)) {
     if (!IsKnown(xy_index + offset)) continue;

cartographer/mapping/2d/range_data_inserter_2d_test.cc

@@ -18,9 +18,9 @@
 
 #include <memory>
 
+#include "absl/memory/memory.h"
 #include "cartographer/common/lua_parameter_dictionary.h"
 #include "cartographer/common/lua_parameter_dictionary_test_helpers.h"
-#include "cartographer/common/make_unique.h"
 #include "cartographer/mapping/2d/probability_grid.h"
 #include "cartographer/mapping/probability_values.h"
 #include "gmock/gmock.h"
@@ -44,7 +44,7 @@ class RangeDataInserterTest2D : public ::testing::Test {
     options_ = CreateProbabilityGridRangeDataInserterOptions2D(
         parameter_dictionary.get());
     range_data_inserter_ =
-        common::make_unique<ProbabilityGridRangeDataInserter2D>(options_);
+        absl::make_unique<ProbabilityGridRangeDataInserter2D>(options_);
   }
 
   void InsertPointCloud() {

cartographer/mapping/2d/submap_2d.cc

@@ -23,7 +23,7 @@
 #include <limits>
 
 #include "Eigen/Geometry"
-#include "cartographer/common/make_unique.h"
+#include "absl/memory/memory.h"
 #include "cartographer/common/port.h"
 #include "cartographer/mapping/2d/probability_grid_range_data_inserter_2d.h"
 #include "cartographer/mapping/range_data_inserter_interface.h"
@@ -76,7 +76,7 @@ Submap2D::Submap2D(const proto::Submap2D& proto,
   if (proto.has_grid()) {
     CHECK(proto.grid().has_probability_grid_2d());
     grid_ =
-        common::make_unique<ProbabilityGrid>(proto.grid(), conversion_tables_);
+        absl::make_unique<ProbabilityGrid>(proto.grid(), conversion_tables_);
   }
   set_num_range_data(proto.num_range_data());
   set_finished(proto.finished());
@@ -103,7 +103,7 @@ void Submap2D::UpdateFromProto(const proto::Submap& proto) {
   set_finished(submap_2d.finished());
   if (proto.submap_2d().has_grid()) {
     CHECK(proto.submap_2d().grid().has_probability_grid_2d());
-    grid_ = common::make_unique<ProbabilityGrid>(submap_2d.grid(),
+    grid_ = absl::make_unique<ProbabilityGrid>(submap_2d.grid(),
                                                conversion_tables_);
   }
 }
@@ -159,7 +159,7 @@ std::vector<std::shared_ptr<const Submap2D>> ActiveSubmaps2D::InsertRangeData(
 
 std::unique_ptr<RangeDataInserterInterface>
 ActiveSubmaps2D::CreateRangeDataInserter() {
-  return common::make_unique<ProbabilityGridRangeDataInserter2D>(
+  return absl::make_unique<ProbabilityGridRangeDataInserter2D>(
       options_.range_data_inserter_options()
           .probability_grid_range_data_inserter_options_2d());
 }
@@ -168,7 +168,7 @@ std::unique_ptr<GridInterface> ActiveSubmaps2D::CreateGrid(
     const Eigen::Vector2f& origin) {
   constexpr int kInitialSubmapSize = 100;
   float resolution = options_.grid_options_2d().resolution();
-  return common::make_unique<ProbabilityGrid>(
+  return absl::make_unique<ProbabilityGrid>(
       MapLimits(resolution,
                 origin.cast<double>() + 0.5 * kInitialSubmapSize * resolution *
                                             Eigen::Vector2d::Ones(),
@@ -183,7 +183,7 @@ void ActiveSubmaps2D::AddSubmap(const Eigen::Vector2f& origin) {
     CHECK(submaps_.front()->finished());
     submaps_.erase(submaps_.begin());
   }
-  submaps_.push_back(common::make_unique<Submap2D>(
+  submaps_.push_back(absl::make_unique<Submap2D>(
       origin,
       std::unique_ptr<Grid2D>(
           static_cast<Grid2D*>(CreateGrid(origin).release())),

cartographer/mapping/2d/submap_2d_test.cc

@@ -100,7 +100,7 @@ TEST(Submap2DTest, ToFromProto) {
                                 CellLimits(100, 110));
   ValueConversionTables conversion_tables;
   Submap2D expected(Eigen::Vector2f(4.f, 5.f),
-                    common::make_unique<ProbabilityGrid>(expected_map_limits,
+                    absl::make_unique<ProbabilityGrid>(expected_map_limits,
                                                        &conversion_tables),
                     &conversion_tables);
   const proto::Submap proto =

cartographer/mapping/2d/tsdf_2d.cc

@@ -16,7 +16,7 @@
 
 #include "cartographer/mapping/2d/tsdf_2d.h"
 
-#include "cartographer/common/make_unique.h"
+#include "absl/memory/memory.h"
 
 namespace cartographer {
 namespace mapping {
@@ -26,7 +26,7 @@ TSDF2D::TSDF2D(const MapLimits& limits, float truncation_distance,
     : Grid2D(limits, -truncation_distance, truncation_distance,
              conversion_tables),
       conversion_tables_(conversion_tables),
-      value_converter_(common::make_unique<TSDValueConverter>(
+      value_converter_(absl::make_unique<TSDValueConverter>(
           truncation_distance, max_weight, conversion_tables_)),
       weight_cells_(
           limits.cell_limits().num_x_cells * limits.cell_limits().num_y_cells,
@@ -36,7 +36,7 @@ TSDF2D::TSDF2D(const proto::Grid2D& proto,
                ValueConversionTables* conversion_tables)
     : Grid2D(proto, conversion_tables), conversion_tables_(conversion_tables) {
   CHECK(proto.has_tsdf_2d());
-  value_converter_ = common::make_unique<TSDValueConverter>(
+  value_converter_ = absl::make_unique<TSDValueConverter>(
       proto.tsdf_2d().truncation_distance(), proto.tsdf_2d().max_weight(),
       conversion_tables_);
   weight_cells_.reserve(proto.tsdf_2d().weight_cells_size());
@@ -120,7 +120,7 @@ std::unique_ptr<Grid2D> TSDF2D::ComputeCroppedGrid() const {
   const double resolution = limits().resolution();
   const Eigen::Vector2d max =
       limits().max() - resolution * Eigen::Vector2d(offset.y(), offset.x());
-  std::unique_ptr<TSDF2D> cropped_grid = common::make_unique<TSDF2D>(
+  std::unique_ptr<TSDF2D> cropped_grid = absl::make_unique<TSDF2D>(
       MapLimits(resolution, max, cell_limits), value_converter_->getMaxTSD(),
       value_converter_->getMaxWeight(), conversion_tables_);
   for (const Eigen::Array2i& xy_index : XYIndexRangeIterator(cell_limits)) {

cartographer/mapping/2d/tsdf_range_data_inserter_2d_test.cc

@@ -44,8 +44,7 @@ class RangeDataInserterTest2DTSDF : public ::testing::Test {
         "update_weight_distance_cell_to_hit_kernel_bandwith = 0,"
         "}");
     options_ = CreateTSDFRangeDataInserterOptions2D(parameter_dictionary.get());
-    range_data_inserter_ =
+    range_data_inserter_ = absl::make_unique<TSDFRangeDataInserter2D>(options_);
-        common::make_unique<TSDFRangeDataInserter2D>(options_);
   }
 
   void InsertPoint() {
@@ -145,7 +144,7 @@ TEST_F(RangeDataInserterTest2DTSDF, InsertPoint) {
 
 TEST_F(RangeDataInserterTest2DTSDF, InsertPointWithFreeSpaceUpdate) {
   options_.set_update_free_space(true);
-  range_data_inserter_ = common::make_unique<TSDFRangeDataInserter2D>(options_);
+  range_data_inserter_ = absl::make_unique<TSDFRangeDataInserter2D>(options_);
   InsertPoint();
   const float truncation_distance =
       static_cast<float>(options_.truncation_distance());
@@ -199,7 +198,7 @@ TEST_F(RangeDataInserterTest2DTSDF, InsertPointWithFreeSpaceUpdate) {
 
 TEST_F(RangeDataInserterTest2DTSDF, InsertPointLinearWeight) {
   options_.set_update_weight_range_exponent(1);
-  range_data_inserter_ = common::make_unique<TSDFRangeDataInserter2D>(options_);
+  range_data_inserter_ = absl::make_unique<TSDFRangeDataInserter2D>(options_);
   InsertPoint();
   const float truncation_distance =
       static_cast<float>(options_.truncation_distance());
@@ -218,7 +217,7 @@ TEST_F(RangeDataInserterTest2DTSDF, InsertPointLinearWeight) {
 
 TEST_F(RangeDataInserterTest2DTSDF, InsertPointQuadraticWeight) {
   options_.set_update_weight_range_exponent(2);
-  range_data_inserter_ = common::make_unique<TSDFRangeDataInserter2D>(options_);
+  range_data_inserter_ = absl::make_unique<TSDFRangeDataInserter2D>(options_);
   InsertPoint();
   const float truncation_distance =
       static_cast<float>(options_.truncation_distance());
@@ -263,7 +262,7 @@ TEST_F(RangeDataInserterTest2DTSDF,
 
 TEST_F(RangeDataInserterTest2DTSDF, InsertSmallAnglePointWitNormalProjection) {
   options_.set_project_sdf_distance_to_scan_normal(true);
-  range_data_inserter_ = common::make_unique<TSDFRangeDataInserter2D>(options_);
+  range_data_inserter_ = absl::make_unique<TSDFRangeDataInserter2D>(options_);
   sensor::RangeData range_data;
   range_data.returns.emplace_back(-0.5f, 3.5f, 0.f);
   range_data.returns.emplace_back(5.5f, 3.5f, 0.f);
@@ -292,7 +291,7 @@ TEST_F(RangeDataInserterTest2DTSDF,
        InsertPointsWithAngleScanNormalToRayWeight) {
   float bandwith = 10.f;
   options_.set_update_weight_angle_scan_normal_to_ray_kernel_bandwith(bandwith);
-  range_data_inserter_ = common::make_unique<TSDFRangeDataInserter2D>(options_);
+  range_data_inserter_ = absl::make_unique<TSDFRangeDataInserter2D>(options_);
   sensor::RangeData range_data;
   range_data.returns.emplace_back(-0.5f, 3.5f, 0.f);
   range_data.returns.emplace_back(5.5f, 3.5f, 0.f);
@@ -326,7 +325,7 @@ TEST_F(RangeDataInserterTest2DTSDF,
 TEST_F(RangeDataInserterTest2DTSDF, InsertPointsWithDistanceCellToHit) {
   float bandwith = 10.f;
   options_.set_update_weight_distance_cell_to_hit_kernel_bandwith(bandwith);
-  range_data_inserter_ = common::make_unique<TSDFRangeDataInserter2D>(options_);
+  range_data_inserter_ = absl::make_unique<TSDFRangeDataInserter2D>(options_);
   InsertPoint();
   const float truncation_distance =
       static_cast<float>(options_.truncation_distance());

cartographer/mapping/3d/hybrid_grid.h

@@ -24,7 +24,7 @@
 #include <vector>
 
 #include "Eigen/Core"
-#include "cartographer/common/make_unique.h"
+#include "absl/memory/memory.h"
 #include "cartographer/common/math.h"
 #include "cartographer/common/port.h"
 #include "cartographer/mapping/probability_values.h"
@@ -169,7 +169,7 @@ class NestedGrid {
     std::unique_ptr<WrappedGrid>& meta_cell =
         meta_cells_[ToFlatIndex(meta_index, kBits)];
     if (meta_cell == nullptr) {
-      meta_cell = common::make_unique<WrappedGrid>();
+      meta_cell = absl::make_unique<WrappedGrid>();
     }
     const Eigen::Array3i inner_index =
         index - meta_index * WrappedGrid::grid_size();
@@ -292,7 +292,7 @@ class DynamicGrid {
     std::unique_ptr<WrappedGrid>& meta_cell =
         meta_cells_[ToFlatIndex(meta_index, bits_)];
     if (meta_cell == nullptr) {
-      meta_cell = common::make_unique<WrappedGrid>();
+      meta_cell = absl::make_unique<WrappedGrid>();
     }
     const Eigen::Array3i inner_index =
         shifted_index - meta_index * WrappedGrid::grid_size();

cartographer/mapping/3d/submap_3d.cc

@@ -199,9 +199,9 @@ Submap3D::Submap3D(const float high_resolution, const float low_resolution,
                    const transform::Rigid3d& local_submap_pose)
     : Submap(local_submap_pose),
       high_resolution_hybrid_grid_(
-          common::make_unique<HybridGrid>(high_resolution)),
+          absl::make_unique<HybridGrid>(high_resolution)),
       low_resolution_hybrid_grid_(
-          common::make_unique<HybridGrid>(low_resolution)) {}
+          absl::make_unique<HybridGrid>(low_resolution)) {}
 
 Submap3D::Submap3D(const proto::Submap3D& proto)
     : Submap(transform::ToRigid3(proto.local_pose())) {
@@ -233,12 +233,12 @@ void Submap3D::UpdateFromProto(const proto::Submap3D& submap_3d) {
   set_num_range_data(submap_3d.num_range_data());
   set_finished(submap_3d.finished());
   if (submap_3d.has_high_resolution_hybrid_grid()) {
-    high_resolution_hybrid_grid_ = common::make_unique<HybridGrid>(
+    high_resolution_hybrid_grid_ =
-        submap_3d.high_resolution_hybrid_grid());
+        absl::make_unique<HybridGrid>(submap_3d.high_resolution_hybrid_grid());
   }
   if (submap_3d.has_low_resolution_hybrid_grid()) {
     low_resolution_hybrid_grid_ =
-        common::make_unique<HybridGrid>(submap_3d.low_resolution_hybrid_grid());
+        absl::make_unique<HybridGrid>(submap_3d.low_resolution_hybrid_grid());
   }
 }
 

cartographer/mapping/id.h

@@ -27,7 +27,7 @@
 #include <tuple>
 #include <vector>
 
-#include "cartographer/common/make_unique.h"
+#include "absl/memory/memory.h"
 #include "cartographer/common/port.h"
 #include "cartographer/common/time.h"
 #include "cartographer/mapping/proto/pose_graph.pb.h"
@@ -181,7 +181,7 @@ class MapById {
     }
 
     std::unique_ptr<const IdDataReference> operator->() const {
-      return common::make_unique<const IdDataReference>(this->operator*());
+      return absl::make_unique<const IdDataReference>(this->operator*());
     }
 
     ConstIterator& operator++() {

cartographer/mapping/imu_tracker_test.cc

@@ -16,7 +16,7 @@
 
 #include "cartographer/mapping/imu_tracker.h"
 
-#include "cartographer/common/make_unique.h"
+#include "absl/memory/memory.h"
 #include "gtest/gtest.h"
 
 namespace cartographer {
@@ -31,7 +31,7 @@ constexpr int kSteps = 10;
 class ImuTrackerTest : public ::testing::Test {
  protected:
   void SetUp() override {
-    imu_tracker_ = common::make_unique<ImuTracker>(kGravityTimeConstant, time_);
+    imu_tracker_ = absl::make_unique<ImuTracker>(kGravityTimeConstant, time_);
     angular_velocity_ = Eigen::Vector3d(0, 0, 0);
     linear_acceleration_ = Eigen::Vector3d(0, 0, 9.9);
     EXPECT_NEAR(0.,

cartographer/mapping/internal/2d/local_slam_result_2d.cc

@@ -23,7 +23,7 @@ namespace mapping {
 void LocalSlamResult2D::AddToTrajectoryBuilder(
     TrajectoryBuilderInterface* const trajectory_builder) {
   trajectory_builder->AddLocalSlamResultData(
-      common::make_unique<LocalSlamResult2D>(*this));
+      absl::make_unique<LocalSlamResult2D>(*this));
 }
 
 void LocalSlamResult2D::AddToPoseGraph(int trajectory_id,

cartographer/mapping/internal/2d/local_trajectory_builder_2d.cc

@@ -19,7 +19,7 @@
 #include <limits>
 #include <memory>
 
-#include "cartographer/common/make_unique.h"
+#include "absl/memory/memory.h"
 #include "cartographer/metrics/family_factory.h"
 #include "cartographer/sensor/range_data.h"
 
@@ -66,7 +66,7 @@ std::unique_ptr<transform::Rigid2d> LocalTrajectoryBuilder2D::ScanMatch(
     const common::Time time, const transform::Rigid2d& pose_prediction,
     const sensor::PointCloud& filtered_gravity_aligned_point_cloud) {
   if (active_submaps_.submaps().empty()) {
-    return common::make_unique<transform::Rigid2d>(pose_prediction);
+    return absl::make_unique<transform::Rigid2d>(pose_prediction);
   }
   std::shared_ptr<const Submap2D> matching_submap =
       active_submaps_.submaps().front();
@@ -84,7 +84,7 @@ std::unique_ptr<transform::Rigid2d> LocalTrajectoryBuilder2D::ScanMatch(
     kRealTimeCorrelativeScanMatcherScoreMetric->Observe(score);
   }
 
-  auto pose_observation = common::make_unique<transform::Rigid2d>();
+  auto pose_observation = absl::make_unique<transform::Rigid2d>();
   ceres::Solver::Summary summary;
   ceres_scan_matcher_.Match(pose_prediction.translation(), initial_ceres_pose,
                             filtered_gravity_aligned_point_cloud,
@@ -271,7 +271,7 @@ LocalTrajectoryBuilder2D::AddAccumulatedRangeData(
   }
   last_wall_time_ = wall_time;
   last_thread_cpu_time_seconds_ = thread_cpu_time_seconds;
-  return common::make_unique<MatchingResult>(
+  return absl::make_unique<MatchingResult>(
       MatchingResult{time, pose_estimate, std::move(range_data_in_local),
                      std::move(insertion_result)});
 }
@@ -287,7 +287,7 @@ LocalTrajectoryBuilder2D::InsertIntoSubmap(
   }
   std::vector<std::shared_ptr<const Submap2D>> insertion_submaps =
       active_submaps_.InsertRangeData(range_data_in_local);
-  return common::make_unique<InsertionResult>(InsertionResult{
+  return absl::make_unique<InsertionResult>(InsertionResult{
       std::make_shared<const TrajectoryNode::Data>(TrajectoryNode::Data{
           time,
           gravity_alignment,
@@ -324,7 +324,7 @@ void LocalTrajectoryBuilder2D::InitializeExtrapolator(const common::Time time) {
   // in time and thus the last two are used.
   constexpr double kExtrapolationEstimationTimeSec = 0.001;
   // TODO(gaschler): Consider using InitializeWithImu as 3D does.
-  extrapolator_ = common::make_unique<PoseExtrapolator>(
+  extrapolator_ = absl::make_unique<PoseExtrapolator>(
       ::cartographer::common::FromSeconds(kExtrapolationEstimationTimeSec),
       options_.imu_gravity_time_constant());
   extrapolator_->AddPose(time, transform::Rigid3d::Identity());

cartographer/mapping/internal/2d/pose_graph_2d.cc

@@ -29,7 +29,7 @@
 #include <string>
 
 #include "Eigen/Eigenvalues"
-#include "cartographer/common/make_unique.h"
+#include "absl/memory/memory.h"
 #include "cartographer/common/math.h"
 #include "cartographer/mapping/proto/pose_graph/constraint_builder_options.pb.h"
 #include "cartographer/sensor/compressed_point_cloud.h"
@@ -158,8 +158,8 @@ void PoseGraph2D::AddWorkItem(
     const std::function<WorkItem::Result()>& work_item) {
   common::MutexLocker locker(&work_queue_mutex_);
   if (work_queue_ == nullptr) {
-    work_queue_ = common::make_unique<WorkQueue>();
+    work_queue_ = absl::make_unique<WorkQueue>();
-    auto task = common::make_unique<common::Task>();
+    auto task = absl::make_unique<common::Task>();
     task->SetWorkItem([this]() { DrainWorkQueue(); });
     thread_pool_->Schedule(std::move(task));
   }
@@ -183,7 +183,7 @@ void PoseGraph2D::AddTrajectoryIfNeeded(const int trajectory_id) {
   // Make sure we have a sampler for this trajectory.
   if (!global_localization_samplers_[trajectory_id]) {
     global_localization_samplers_[trajectory_id] =
-        common::make_unique<common::FixedRatioSampler>(
+        absl::make_unique<common::FixedRatioSampler>(
             options_.global_sampling_ratio());
   }
 }

cartographer/mapping/internal/2d/pose_graph_2d_test.cc

@@ -20,8 +20,8 @@
 #include <memory>
 #include <random>
 
+#include "absl/memory/memory.h"
 #include "cartographer/common/lua_parameter_dictionary_test_helpers.h"
-#include "cartographer/common/make_unique.h"
 #include "cartographer/common/thread_pool.h"
 #include "cartographer/common/time.h"
 #include "cartographer/mapping/2d/probability_grid_range_data_inserter_2d.h"
@@ -77,7 +77,7 @@ class PoseGraph2DTest : public ::testing::Test {
             },
           },
         })text");
-      active_submaps_ = common::make_unique<ActiveSubmaps2D>(
+      active_submaps_ = absl::make_unique<ActiveSubmaps2D>(
           mapping::CreateSubmapsOptions2D(parameter_dictionary.get()));
     }
 
@@ -155,9 +155,9 @@ class PoseGraph2DTest : public ::testing::Test {
             global_constraint_search_after_n_seconds = 10.0,
           })text");
       auto options = CreatePoseGraphOptions(parameter_dictionary.get());
-      pose_graph_ = common::make_unique<PoseGraph2D>(
+      pose_graph_ = absl::make_unique<PoseGraph2D>(
           options,
-          common::make_unique<optimization::OptimizationProblem2D>(
+          absl::make_unique<optimization::OptimizationProblem2D>(
               options.optimization_problem_options()),
           &thread_pool_);
     }

cartographer/mapping/internal/2d/scan_matching/ceres_scan_matcher_2d_test.cc

@@ -18,9 +18,9 @@
 
 #include <memory>
 
+#include "absl/memory/memory.h"
 #include "cartographer/common/lua_parameter_dictionary.h"
 #include "cartographer/common/lua_parameter_dictionary_test_helpers.h"
-#include "cartographer/common/make_unique.h"
 #include "cartographer/mapping/2d/probability_grid.h"
 #include "cartographer/mapping/probability_values.h"
 #include "cartographer/sensor/point_cloud.h"
@@ -57,7 +57,7 @@ class CeresScanMatcherTest : public ::testing::Test {
         })text");
     const proto::CeresScanMatcherOptions2D options =
         CreateCeresScanMatcherOptions2D(parameter_dictionary.get());
-    ceres_scan_matcher_ = common::make_unique<CeresScanMatcher2D>(options);
+    ceres_scan_matcher_ = absl::make_unique<CeresScanMatcher2D>(options);
   }
 
   void TestFromInitialPose(const transform::Rigid2d& initial_pose) {

cartographer/mapping/internal/2d/scan_matching/fast_correlative_scan_matcher_2d.cc

@@ -23,7 +23,7 @@
 #include <limits>
 
 #include "Eigen/Geometry"
-#include "cartographer/common/make_unique.h"
+#include "absl/memory/memory.h"
 #include "cartographer/common/math.h"
 #include "cartographer/mapping/2d/grid_2d.h"
 #include "cartographer/sensor/point_cloud.h"
@@ -191,7 +191,7 @@ FastCorrelativeScanMatcher2D::FastCorrelativeScanMatcher2D(
     : options_(options),
       limits_(grid.limits()),
       precomputation_grid_stack_(
-          common::make_unique<PrecomputationGridStack2D>(grid, options)) {}
+          absl::make_unique<PrecomputationGridStack2D>(grid, options)) {}
 
 FastCorrelativeScanMatcher2D::~FastCorrelativeScanMatcher2D() {}
 

cartographer/mapping/internal/2d/scan_matching/real_time_correlative_scan_matcher_2d_test.cc

@@ -20,8 +20,8 @@
 #include <memory>
 
 #include "Eigen/Geometry"
+#include "absl/memory/memory.h"
 #include "cartographer/common/lua_parameter_dictionary_test_helpers.h"
-#include "cartographer/common/make_unique.h"
 #include "cartographer/mapping/2d/probability_grid.h"
 #include "cartographer/mapping/2d/probability_grid_range_data_inserter_2d.h"
 #include "cartographer/mapping/internal/scan_matching/real_time_correlative_scan_matcher.h"
@@ -48,7 +48,7 @@ class RealTimeCorrelativeScanMatcherTest : public ::testing::Test {
           "miss_probability = 0.4, "
           "}");
       range_data_inserter_ =
-          common::make_unique<ProbabilityGridRangeDataInserter2D>(
+          absl::make_unique<ProbabilityGridRangeDataInserter2D>(
               CreateProbabilityGridRangeDataInserterOptions2D(
                   parameter_dictionary.get()));
     }
@@ -72,7 +72,7 @@ class RealTimeCorrelativeScanMatcherTest : public ::testing::Test {
           "rotation_delta_cost_weight = 0., "
           "}");
       real_time_correlative_scan_matcher_ =
-          common::make_unique<RealTimeCorrelativeScanMatcher2D>(
+          absl::make_unique<RealTimeCorrelativeScanMatcher2D>(
               CreateRealTimeCorrelativeScanMatcherOptions(
                   parameter_dictionary.get()));
     }

cartographer/mapping/internal/3d/local_slam_result_3d.cc

@@ -23,7 +23,7 @@ namespace mapping {
 void LocalSlamResult3D::AddToTrajectoryBuilder(
     TrajectoryBuilderInterface* const trajectory_builder) {
   trajectory_builder->AddLocalSlamResultData(
-      common::make_unique<LocalSlamResult3D>(*this));
+      absl::make_unique<LocalSlamResult3D>(*this));
 }
 
 void LocalSlamResult3D::AddToPoseGraph(int trajectory_id,

cartographer/mapping/internal/3d/local_trajectory_builder_3d.cc

@@ -18,7 +18,7 @@
 
 #include <memory>
 
-#include "cartographer/common/make_unique.h"
+#include "absl/memory/memory.h"
 #include "cartographer/common/time.h"
 #include "cartographer/mapping/internal/3d/scan_matching/rotational_scan_matcher.h"
 #include "cartographer/mapping/proto/3d/local_trajectory_builder_options_3d.pb.h"
@@ -51,10 +51,9 @@ LocalTrajectoryBuilder3D::LocalTrajectoryBuilder3D(
       active_submaps_(options.submaps_options()),
       motion_filter_(options.motion_filter_options()),
       real_time_correlative_scan_matcher_(
-          common::make_unique<scan_matching::RealTimeCorrelativeScanMatcher3D>(
+          absl::make_unique<scan_matching::RealTimeCorrelativeScanMatcher3D>(
               options_.real_time_correlative_scan_matcher_options())),
-      ceres_scan_matcher_(
+      ceres_scan_matcher_(absl::make_unique<scan_matching::CeresScanMatcher3D>(
-          common::make_unique<scan_matching::CeresScanMatcher3D>(
           options_.ceres_scan_matcher_options())),
       accumulated_range_data_{Eigen::Vector3f::Zero(), {}, {}},
       range_data_collator_(expected_range_sensor_ids) {}
@@ -66,7 +65,7 @@ std::unique_ptr<transform::Rigid3d> LocalTrajectoryBuilder3D::ScanMatch(
     const sensor::PointCloud& low_resolution_point_cloud_in_tracking,
     const sensor::PointCloud& high_resolution_point_cloud_in_tracking) {
   if (active_submaps_.submaps().empty()) {
-    return common::make_unique<transform::Rigid3d>(pose_prediction);
+    return absl::make_unique<transform::Rigid3d>(pose_prediction);
   }
   std::shared_ptr<const mapping::Submap3D> matching_submap =
       active_submaps_.submaps().front();
@@ -100,7 +99,7 @@ std::unique_ptr<transform::Rigid3d> LocalTrajectoryBuilder3D::ScanMatch(
       pose_observation_in_submap.rotation().angularDistance(
           initial_ceres_pose.rotation());
   kScanMatcherResidualAngleMetric->Observe(residual_angle);
-  return common::make_unique<transform::Rigid3d>(matching_submap->local_pose() *
+  return absl::make_unique<transform::Rigid3d>(matching_submap->local_pose() *
                                                pose_observation_in_submap);
 }
 
@@ -325,7 +324,7 @@ LocalTrajectoryBuilder3D::AddAccumulatedRangeData(
   }
   last_wall_time_ = wall_time;
   last_thread_cpu_time_seconds_ = thread_cpu_time_seconds;
-  return common::make_unique<MatchingResult>(MatchingResult{
+  return absl::make_unique<MatchingResult>(MatchingResult{
       time, *pose_estimate, std::move(filtered_range_data_in_local),
       std::move(insertion_result)});
 }
@@ -361,7 +360,7 @@ LocalTrajectoryBuilder3D::InsertIntoSubmap(
               filtered_range_data_in_tracking.returns,
               transform::Rigid3f::Rotation(gravity_alignment.cast<float>())),
           options_.rotational_histogram_size());
-  return common::make_unique<InsertionResult>(
+  return absl::make_unique<InsertionResult>(
       InsertionResult{std::make_shared<const mapping::TrajectoryNode::Data>(
                           mapping::TrajectoryNode::Data{
                               time,

cartographer/mapping/internal/3d/pose_graph_3d.cc

@@ -28,7 +28,7 @@
 #include <string>
 
 #include "Eigen/Eigenvalues"
-#include "cartographer/common/make_unique.h"
+#include "absl/memory/memory.h"
 #include "cartographer/common/math.h"
 #include "cartographer/mapping/proto/pose_graph/constraint_builder_options.pb.h"
 #include "cartographer/sensor/compressed_point_cloud.h"
@@ -155,8 +155,8 @@ void PoseGraph3D::AddWorkItem(
     const std::function<WorkItem::Result()>& work_item) {
   common::MutexLocker locker(&work_queue_mutex_);
   if (work_queue_ == nullptr) {
-    work_queue_ = common::make_unique<WorkQueue>();
+    work_queue_ = absl::make_unique<WorkQueue>();
-    auto task = common::make_unique<common::Task>();
+    auto task = absl::make_unique<common::Task>();
     task->SetWorkItem([this]() { DrainWorkQueue(); });
     thread_pool_->Schedule(std::move(task));
   }
@@ -180,7 +180,7 @@ void PoseGraph3D::AddTrajectoryIfNeeded(const int trajectory_id) {
   // Make sure we have a sampler for this trajectory.
   if (!global_localization_samplers_[trajectory_id]) {
     global_localization_samplers_[trajectory_id] =
-        common::make_unique<common::FixedRatioSampler>(
+        absl::make_unique<common::FixedRatioSampler>(
             options_.global_sampling_ratio());
   }
 }

cartographer/mapping/internal/3d/pose_graph_3d_test.cc

@@ -57,8 +57,7 @@ class PoseGraph3DForTesting : public PoseGraph3D {
 
 class PoseGraph3DTest : public ::testing::Test {
  protected:
-  PoseGraph3DTest()
+  PoseGraph3DTest() : thread_pool_(absl::make_unique<common::ThreadPool>(1)) {}
-      : thread_pool_(common::make_unique<common::ThreadPool>(1)) {}
 
   void SetUp() override {
     const std::string kPoseGraphLua = R"text(
@@ -70,17 +69,16 @@ class PoseGraph3DTest : public ::testing::Test {
 
   void BuildPoseGraph() {
     auto optimization_problem =
-        common::make_unique<optimization::OptimizationProblem3D>(
+        absl::make_unique<optimization::OptimizationProblem3D>(
             pose_graph_options_.optimization_problem_options());
-    pose_graph_ = common::make_unique<PoseGraph3DForTesting>(
+    pose_graph_ = absl::make_unique<PoseGraph3DForTesting>(
         pose_graph_options_, std::move(optimization_problem),
         thread_pool_.get());
   }
 
   void BuildPoseGraphWithFakeOptimization() {
-    auto optimization_problem =
+    auto optimization_problem = absl::make_unique<MockOptimizationProblem3D>();
-        common::make_unique<MockOptimizationProblem3D>();
+    pose_graph_ = absl::make_unique<PoseGraph3DForTesting>(
-    pose_graph_ = common::make_unique<PoseGraph3DForTesting>(
         pose_graph_options_, std::move(optimization_problem),
         thread_pool_.get());
   }
@@ -159,7 +157,7 @@ TEST_F(PoseGraph3DTest, PureLocalizationTrimmer) {
       pose_graph_->AddSerializedConstraints(FromProto(proto.constraint()));
     }
   }
-  pose_graph_->AddTrimmer(common::make_unique<PureLocalizationTrimmer>(
+  pose_graph_->AddTrimmer(absl::make_unique<PureLocalizationTrimmer>(
       trajectory_id, num_submaps_to_keep));
   pose_graph_->WaitForAllComputations();
   EXPECT_EQ(
@@ -236,8 +234,7 @@ TEST_F(PoseGraph3DTest, EvenSubmapTrimmer) {
       pose_graph_->AddSerializedConstraints(FromProto(proto.constraint()));
     }
   }
-  pose_graph_->AddTrimmer(
+  pose_graph_->AddTrimmer(absl::make_unique<EvenSubmapTrimmer>(trajectory_id));
-      common::make_unique<EvenSubmapTrimmer>(trajectory_id));
   pose_graph_->WaitForAllComputations();
   EXPECT_EQ(
       pose_graph_->GetAllSubmapPoses().SizeOfTrajectoryOrZero(trajectory_id),

cartographer/mapping/internal/3d/scan_matching/ceres_scan_matcher_3d.cc

@@ -20,8 +20,8 @@
 #include <utility>
 #include <vector>
 
+#include "absl/memory/memory.h"
 #include "cartographer/common/ceres_solver_options.h"
-#include "cartographer/common/make_unique.h"
 #include "cartographer/mapping/internal/3d/rotation_parameterization.h"
 #include "cartographer/mapping/internal/3d/scan_matching/occupied_space_cost_function_3d.h"
 #include "cartographer/mapping/internal/3d/scan_matching/rotation_delta_cost_functor_3d.h"
@@ -80,10 +80,10 @@ void CeresScanMatcher3D::Match(
       initial_pose_estimate, nullptr /* translation_parameterization */,
       options_.only_optimize_yaw()
           ? std::unique_ptr<ceres::LocalParameterization>(
-                common::make_unique<ceres::AutoDiffLocalParameterization<
+                absl::make_unique<ceres::AutoDiffLocalParameterization<
                     YawOnlyQuaternionPlus, 4, 1>>())
           : std::unique_ptr<ceres::LocalParameterization>(
-                common::make_unique<ceres::QuaternionParameterization>()),
+                absl::make_unique<ceres::QuaternionParameterization>()),
       &problem);
 
   CHECK_EQ(options_.occupied_space_weight_size(),

cartographer/mapping/internal/3d/scan_matching/fast_correlative_scan_matcher_3d.cc

@@ -22,7 +22,7 @@
 #include <limits>
 
 #include "Eigen/Geometry"
-#include "cartographer/common/make_unique.h"
+#include "absl/memory/memory.h"
 #include "cartographer/common/math.h"
 #include "cartographer/mapping/internal/3d/scan_matching/low_resolution_matcher.h"
 #include "cartographer/mapping/proto/scan_matching//fast_correlative_scan_matcher_options_3d.pb.h"
@@ -136,7 +136,7 @@ FastCorrelativeScanMatcher3D::FastCorrelativeScanMatcher3D(
       resolution_(hybrid_grid.resolution()),
       width_in_voxels_(hybrid_grid.grid_size()),
       precomputation_grid_stack_(
-          common::make_unique<PrecomputationGridStack3D>(hybrid_grid, options)),
+          absl::make_unique<PrecomputationGridStack3D>(hybrid_grid, options)),
       low_resolution_hybrid_grid_(low_resolution_hybrid_grid),
       rotational_scan_matcher_(HistogramsAtAnglesFromNodes(nodes)) {}
 
@@ -206,7 +206,7 @@ FastCorrelativeScanMatcher3D::MatchWithSearchParameters(
       search_parameters, discrete_scans, lowest_resolution_candidates,
       precomputation_grid_stack_->max_depth(), min_score);
   if (best_candidate.score > min_score) {
-    return common::make_unique<Result>(Result{
+    return absl::make_unique<Result>(Result{
         best_candidate.score,
         GetPoseFromCandidate(discrete_scans, best_candidate).cast<double>(),
         discrete_scans[best_candidate.scan_index].rotational_score,

cartographer/mapping/internal/3d/scan_matching/fast_correlative_scan_matcher_3d_test.cc

@@ -21,8 +21,8 @@
 #include <random>
 #include <string>
 
+#include "absl/memory/memory.h"
 #include "cartographer/common/lua_parameter_dictionary_test_helpers.h"
-#include "cartographer/common/make_unique.h"
 #include "cartographer/mapping/3d/range_data_inserter_3d.h"
 #include "cartographer/transform/rigid_transform_test_helpers.h"
 #include "cartographer/transform/transform.h"
@@ -96,7 +96,7 @@ class FastCorrelativeScanMatcher3DTest : public ::testing::Test {
   std::unique_ptr<FastCorrelativeScanMatcher3D> GetFastCorrelativeScanMatcher(
       const proto::FastCorrelativeScanMatcherOptions3D& options,
       const transform::Rigid3f& pose) {
-    hybrid_grid_ = common::make_unique<HybridGrid>(0.05f);
+    hybrid_grid_ = absl::make_unique<HybridGrid>(0.05f);
     range_data_inserter_.Insert(
         sensor::RangeData{pose.translation(),
                           sensor::TransformPointCloud(point_cloud_, pose),
@@ -104,7 +104,7 @@ class FastCorrelativeScanMatcher3DTest : public ::testing::Test {
         hybrid_grid_.get());
     hybrid_grid_->FinishUpdate();
 
-    return common::make_unique<FastCorrelativeScanMatcher3D>(
+    return absl::make_unique<FastCorrelativeScanMatcher3D>(
         *hybrid_grid_, hybrid_grid_.get(),
         std::vector<TrajectoryNode>(
             {{std::make_shared<const TrajectoryNode::Data>(

cartographer/mapping/internal/constraints/constraint_builder_2d.cc

@@ -26,7 +26,7 @@
 #include <string>
 
 #include "Eigen/Eigenvalues"
-#include "cartographer/common/make_unique.h"
+#include "absl/memory/memory.h"
 #include "cartographer/common/math.h"
 #include "cartographer/common/thread_pool.h"
 #include "cartographer/mapping/proto/scan_matching//ceres_scan_matcher_options_2d.pb.h"
@@ -58,8 +58,8 @@ ConstraintBuilder2D::ConstraintBuilder2D(
     common::ThreadPoolInterface* const thread_pool)
     : options_(options),
       thread_pool_(thread_pool),
-      finish_node_task_(common::make_unique<common::Task>()),
+      finish_node_task_(absl::make_unique<common::Task>()),
-      when_done_task_(common::make_unique<common::Task>()),
+      when_done_task_(absl::make_unique<common::Task>()),
       sampler_(options.sampling_ratio()),
       ceres_scan_matcher_(options.ceres_scan_matcher_options()) {}
 
@@ -92,7 +92,7 @@ void ConstraintBuilder2D::MaybeAddConstraint(
   auto* const constraint = &constraints_.back();
   const auto* scan_matcher =
       DispatchScanMatcherConstruction(submap_id, submap->grid());
-  auto constraint_task = common::make_unique<common::Task>();
+  auto constraint_task = absl::make_unique<common::Task>();
   constraint_task->SetWorkItem([=]() EXCLUDES(mutex_) {
     ComputeConstraint(submap_id, submap, node_id, false, /* match_full_submap */
                       constant_data, initial_relative_pose, *scan_matcher,
@@ -117,7 +117,7 @@ void ConstraintBuilder2D::MaybeAddGlobalConstraint(
   auto* const constraint = &constraints_.back();
   const auto* scan_matcher =
       DispatchScanMatcherConstruction(submap_id, submap->grid());
-  auto constraint_task = common::make_unique<common::Task>();
+  auto constraint_task = absl::make_unique<common::Task>();
   constraint_task->SetWorkItem([=]() EXCLUDES(mutex_) {
     ComputeConstraint(submap_id, submap, node_id, true, /* match_full_submap */
                       constant_data, transform::Rigid2d::Identity(),
@@ -138,7 +138,7 @@ void ConstraintBuilder2D::NotifyEndOfNode() {
   });
   auto finish_node_task_handle =
       thread_pool_->Schedule(std::move(finish_node_task_));
-  finish_node_task_ = common::make_unique<common::Task>();
+  finish_node_task_ = absl::make_unique<common::Task>();
   when_done_task_->AddDependency(finish_node_task_handle);
   ++num_started_nodes_;
 }
@@ -148,12 +148,11 @@ void ConstraintBuilder2D::WhenDone(
   common::MutexLocker locker(&mutex_);
   CHECK(when_done_ == nullptr);
   // TODO(gaschler): Consider using just std::function, it can also be empty.
-  when_done_ =
+  when_done_ = absl::make_unique<std::function<void(const Result&)>>(callback);
-      common::make_unique<std::function<void(const Result&)>>(callback);
   CHECK(when_done_task_ != nullptr);
   when_done_task_->SetWorkItem([this] { RunWhenDoneCallback(); });
   thread_pool_->Schedule(std::move(when_done_task_));
-  when_done_task_ = common::make_unique<common::Task>();
+  when_done_task_ = absl::make_unique<common::Task>();
 }
 
 const ConstraintBuilder2D::SubmapScanMatcher*
@@ -165,11 +164,11 @@ ConstraintBuilder2D::DispatchScanMatcherConstruction(const SubmapId& submap_id,
   auto& submap_scan_matcher = submap_scan_matchers_[submap_id];
   submap_scan_matcher.grid = grid;
   auto& scan_matcher_options = options_.fast_correlative_scan_matcher_options();
-  auto scan_matcher_task = common::make_unique<common::Task>();
+  auto scan_matcher_task = absl::make_unique<common::Task>();
   scan_matcher_task->SetWorkItem(
       [&submap_scan_matcher, &scan_matcher_options]() {
         submap_scan_matcher.fast_correlative_scan_matcher =
-            common::make_unique<scan_matching::FastCorrelativeScanMatcher2D>(
+            absl::make_unique<scan_matching::FastCorrelativeScanMatcher2D>(
                 *submap_scan_matcher.grid, scan_matcher_options);
       });
   submap_scan_matcher.creation_task_handle =

cartographer/mapping/internal/constraints/constraint_builder_2d_test.cc

@@ -45,7 +45,7 @@ class ConstraintBuilder2DTest : public ::testing::Test {
             POSE_GRAPH.constraint_builder.min_score = 0
             POSE_GRAPH.constraint_builder.global_localization_min_score = 0
             return POSE_GRAPH.constraint_builder)text");
-    constraint_builder_ = common::make_unique<ConstraintBuilder2D>(
+    constraint_builder_ = absl::make_unique<ConstraintBuilder2D>(
         CreateConstraintBuilderOptions(constraint_builder_parameters.get()),
         &thread_pool_);
   }
@@ -78,7 +78,7 @@ TEST_F(ConstraintBuilder2DTest, FindsConstraints) {
   ValueConversionTables conversion_tables;
   Submap2D submap(
       Eigen::Vector2f(4.f, 5.f),
-      common::make_unique<ProbabilityGrid>(map_limits, &conversion_tables),
+      absl::make_unique<ProbabilityGrid>(map_limits, &conversion_tables),
       &conversion_tables);
   int expected_nodes = 0;
   for (int i = 0; i < 2; ++i) {

cartographer/mapping/internal/constraints/constraint_builder_3d.cc

@@ -26,7 +26,7 @@
 #include <string>
 
 #include "Eigen/Eigenvalues"
-#include "cartographer/common/make_unique.h"
+#include "absl/memory/memory.h"
 #include "cartographer/common/math.h"
 #include "cartographer/common/thread_pool.h"
 #include "cartographer/mapping/proto/scan_matching//ceres_scan_matcher_options_3d.pb.h"
@@ -60,8 +60,8 @@ ConstraintBuilder3D::ConstraintBuilder3D(
     common::ThreadPoolInterface* const thread_pool)
     : options_(options),
       thread_pool_(thread_pool),
-      finish_node_task_(common::make_unique<common::Task>()),
+      finish_node_task_(absl::make_unique<common::Task>()),
-      when_done_task_(common::make_unique<common::Task>()),
+      when_done_task_(absl::make_unique<common::Task>()),
       sampler_(options.sampling_ratio()),
       ceres_scan_matcher_(options.ceres_scan_matcher_options_3d()) {}
 
@@ -96,7 +96,7 @@ void ConstraintBuilder3D::MaybeAddConstraint(
   auto* const constraint = &constraints_.back();
   const auto* scan_matcher =
       DispatchScanMatcherConstruction(submap_id, submap_nodes, submap);
-  auto constraint_task = common::make_unique<common::Task>();
+  auto constraint_task = absl::make_unique<common::Task>();
   constraint_task->SetWorkItem([=]() EXCLUDES(mutex_) {
     ComputeConstraint(submap_id, node_id, false, /* match_full_submap */
                       constant_data, global_node_pose, global_submap_pose,
@@ -124,7 +124,7 @@ void ConstraintBuilder3D::MaybeAddGlobalConstraint(
   auto* const constraint = &constraints_.back();
   const auto* scan_matcher =
       DispatchScanMatcherConstruction(submap_id, submap_nodes, submap);
-  auto constraint_task = common::make_unique<common::Task>();
+  auto constraint_task = absl::make_unique<common::Task>();
   constraint_task->SetWorkItem([=]() EXCLUDES(mutex_) {
     ComputeConstraint(submap_id, node_id, true, /* match_full_submap */
                       constant_data,
@@ -147,7 +147,7 @@ void ConstraintBuilder3D::NotifyEndOfNode() {
   });
   auto finish_node_task_handle =
       thread_pool_->Schedule(std::move(finish_node_task_));
-  finish_node_task_ = common::make_unique<common::Task>();
+  finish_node_task_ = absl::make_unique<common::Task>();
   when_done_task_->AddDependency(finish_node_task_handle);
   ++num_started_nodes_;
 }
@@ -157,12 +157,11 @@ void ConstraintBuilder3D::WhenDone(
   common::MutexLocker locker(&mutex_);
   CHECK(when_done_ == nullptr);
   // TODO(gaschler): Consider using just std::function, it can also be empty.
-  when_done_ =
+  when_done_ = absl::make_unique<std::function<void(const Result&)>>(callback);
-      common::make_unique<std::function<void(const Result&)>>(callback);
   CHECK(when_done_task_ != nullptr);
   when_done_task_->SetWorkItem([this] { RunWhenDoneCallback(); });
   thread_pool_->Schedule(std::move(when_done_task_));
-  when_done_task_ = common::make_unique<common::Task>();
+  when_done_task_ = absl::make_unique<common::Task>();
 }
 
 const ConstraintBuilder3D::SubmapScanMatcher*
@@ -179,11 +178,11 @@ ConstraintBuilder3D::DispatchScanMatcherConstruction(
       &submap->low_resolution_hybrid_grid();
   auto& scan_matcher_options =
       options_.fast_correlative_scan_matcher_options_3d();
-  auto scan_matcher_task = common::make_unique<common::Task>();
+  auto scan_matcher_task = absl::make_unique<common::Task>();
   scan_matcher_task->SetWorkItem(
       [&submap_scan_matcher, &scan_matcher_options, submap_nodes]() {
         submap_scan_matcher.fast_correlative_scan_matcher =
-            common::make_unique<scan_matching::FastCorrelativeScanMatcher3D>(
+            absl::make_unique<scan_matching::FastCorrelativeScanMatcher3D>(
                 *submap_scan_matcher.high_resolution_hybrid_grid,
                 submap_scan_matcher.low_resolution_hybrid_grid, submap_nodes,
                 scan_matcher_options);

cartographer/mapping/internal/constraints/constraint_builder_3d_test.cc

@@ -48,7 +48,7 @@ class ConstraintBuilder3DTest : public ::testing::Test {
     POSE_GRAPH.constraint_builder.fast_correlative_scan_matcher_3d.min_low_resolution_score = 0
     POSE_GRAPH.constraint_builder.fast_correlative_scan_matcher_3d.min_rotational_score = 0
     return POSE_GRAPH.constraint_builder)text");
-    constraint_builder_ = common::make_unique<ConstraintBuilder3D>(
+    constraint_builder_ = absl::make_unique<ConstraintBuilder3D>(
         CreateConstraintBuilderOptions(constraint_builder_parameters.get()),
         &thread_pool_);
   }

cartographer/mapping/internal/global_trajectory_builder.cc

@@ -18,7 +18,7 @@
 
 #include <memory>
 
-#include "cartographer/common/make_unique.h"
+#include "absl/memory/memory.h"
 #include "cartographer/common/time.h"
 #include "cartographer/mapping/local_slam_result_data.h"
 #include "cartographer/metrics/family_factory.h"
@@ -69,7 +69,7 @@ class GlobalTrajectoryBuilder : public mapping::TrajectoryBuilderInterface {
           matching_result->insertion_result->constant_data, trajectory_id_,
           matching_result->insertion_result->insertion_submaps);
       CHECK_EQ(node_id.trajectory_id, trajectory_id_);
-      insertion_result = common::make_unique<InsertionResult>(InsertionResult{
+      insertion_result = absl::make_unique<InsertionResult>(InsertionResult{
           node_id, matching_result->insertion_result->constant_data,
           std::vector<std::shared_ptr<const Submap>>(
               matching_result->insertion_result->insertion_submaps.begin(),
@@ -136,7 +136,7 @@ std::unique_ptr<TrajectoryBuilderInterface> CreateGlobalTrajectoryBuilder2D(
     const int trajectory_id, mapping::PoseGraph2D* const pose_graph,
     const TrajectoryBuilderInterface::LocalSlamResultCallback&
         local_slam_result_callback) {
-  return common::make_unique<
+  return absl::make_unique<
       GlobalTrajectoryBuilder<LocalTrajectoryBuilder2D, mapping::PoseGraph2D>>(
       std::move(local_trajectory_builder), trajectory_id, pose_graph,
       local_slam_result_callback);
@@ -147,7 +147,7 @@ std::unique_ptr<TrajectoryBuilderInterface> CreateGlobalTrajectoryBuilder3D(
     const int trajectory_id, mapping::PoseGraph3D* const pose_graph,
     const TrajectoryBuilderInterface::LocalSlamResultCallback&
         local_slam_result_callback) {
-  return common::make_unique<
+  return absl::make_unique<
       GlobalTrajectoryBuilder<LocalTrajectoryBuilder3D, mapping::PoseGraph3D>>(
       std::move(local_trajectory_builder), trajectory_id, pose_graph,
       local_slam_result_callback);