Optimize lambda copy to improve direct call performance. (#15036)

java/BUILD.bazel

@@ -13,6 +13,7 @@ all_modules = [
     "api",
     "runtime",
     "test",
+    "performance_test",
 ]
 
 java_import(
@@ -106,12 +107,26 @@ define_java_module(
     ],
 )
 
+define_java_module(
+    name = "performance_test",
+    deps = [
+        ":io_ray_ray_api",
+        ":io_ray_ray_runtime",
+        "@maven//:com_google_code_gson_gson",
+        "@maven//:com_google_guava_guava",
+        "@maven//:commons_io_commons_io",
+        "@maven//:org_apache_commons_commons_lang3",
+        "@maven//:org_slf4j_slf4j_api",
+    ],
+)
+
 java_binary(
     name = "all_tests",
     args = ["java/testng.xml"],
     data = ["testng.xml"],
     main_class = "org.testng.TestNG",
     runtime_deps = [
+        ":io_ray_ray_performance_test",
         ":io_ray_ray_runtime_test",
         ":io_ray_ray_test",
     ],
@@ -207,6 +222,7 @@ genrule(
         cp -f $(location //java:io_ray_ray_api_pom) "$$WORK_DIR/java/api/pom.xml"
         cp -f $(location //java:io_ray_ray_runtime_pom) "$$WORK_DIR/java/runtime/pom.xml"
         cp -f $(location //java:io_ray_ray_test_pom) "$$WORK_DIR/java/test/pom.xml"
+        cp -f $(location //java:io_ray_ray_performance_test_pom) "$$WORK_DIR/java/performance_test/pom.xml"
         date > $@
     """,
     local = 1,

java/performance_test/pom.xml

@@ -0,0 +1,56 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!-- This file is auto-generated by Bazel from pom_template.xml, do not modify it. -->
+<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xmlns="http://maven.apache.org/POM/4.0.0"
+  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+  <parent>
+    <groupId>io.ray</groupId>
+    <artifactId>ray-superpom</artifactId>
+    <version>1.0.0-SNAPSHOT</version>
+  </parent>
+  <modelVersion>4.0.0</modelVersion>
+
+  <artifactId>ray-performance-test</artifactId>
+  <name>java performance test cases for ray</name>
+  <description>java performance test cases for ray</description>
+
+  <packaging>jar</packaging>
+
+  <dependencies>
+    <dependency>
+      <groupId>io.ray</groupId>
+      <artifactId>ray-api</artifactId>
+      <version>${project.version}</version>
+    </dependency>
+    <dependency>
+      <groupId>io.ray</groupId>
+      <artifactId>ray-runtime</artifactId>
+      <version>${project.version}</version>
+    </dependency>
+    <dependency>
+  <groupId>com.google.code.gson</groupId>
+  <artifactId>gson</artifactId>
+  <version>2.8.5</version>
+</dependency>
+<dependency>
+  <groupId>com.google.guava</groupId>
+  <artifactId>guava</artifactId>
+  <version>27.0.1-jre</version>
+</dependency>
+<dependency>
+  <groupId>commons-io</groupId>
+  <artifactId>commons-io</artifactId>
+  <version>2.5</version>
+</dependency>
+<dependency>
+  <groupId>org.apache.commons</groupId>
+  <artifactId>commons-lang3</artifactId>
+  <version>3.4</version>
+</dependency>
+<dependency>
+  <groupId>org.slf4j</groupId>
+  <artifactId>slf4j-api</artifactId>
+  <version>1.7.25</version>
+</dependency>
+  </dependencies>
+</project>

java/performance_test/pom_template.xml

@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="UTF-8"?>
+{auto_gen_header}
+<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xmlns="http://maven.apache.org/POM/4.0.0"
+  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+  <parent>
+    <groupId>io.ray</groupId>
+    <artifactId>ray-superpom</artifactId>
+    <version>1.0.0-SNAPSHOT</version>
+  </parent>
+  <modelVersion>4.0.0</modelVersion>
+
+  <artifactId>ray-performance-test</artifactId>
+  <name>java performance test cases for ray</name>
+  <description>java performance test cases for ray</description>
+
+  <packaging>jar</packaging>
+
+  <dependencies>
+    <dependency>
+      <groupId>io.ray</groupId>
+      <artifactId>ray-api</artifactId>
+      <version>${project.version}</version>
+    </dependency>
+    <dependency>
+      <groupId>io.ray</groupId>
+      <artifactId>ray-runtime</artifactId>
+      <version>${project.version}</version>
+    </dependency>
+    {generated_bzl_deps}
+  </dependencies>
+</project>

java/performance_test/src/main/java/io/ray/performancetest/Receiver.java

@@ -0,0 +1,40 @@
+package io.ray.performancetest;
+
+import java.nio.ByteBuffer;
+
+public class Receiver {
+  private int value = 0;
+
+  public Receiver() {}
+
+  public boolean ping() {
+    return true;
+  }
+
+  public void noArgsNoReturn() {
+    value += 1;
+  }
+
+  public int noArgsHasReturn() {
+    value += 1;
+    return value;
+  }
+
+  public void bytesNoReturn(byte[] data) {
+    value += 1;
+  }
+
+  public int bytesHasReturn(byte[] data) {
+    value += 1;
+    return value;
+  }
+
+  public void byteBufferNoReturn(ByteBuffer data) {
+    value += 1;
+  }
+
+  public int byteBufferHasReturn(ByteBuffer data) {
+    value += 1;
+    return value;
+  }
+}

java/performance_test/src/main/java/io/ray/performancetest/Source.java

@@ -0,0 +1,117 @@
+package io.ray.performancetest;
+
+import com.google.common.base.Preconditions;
+import io.ray.api.ActorHandle;
+import io.ray.api.ObjectRef;
+import io.ray.api.Ray;
+import java.nio.ByteBuffer;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Random;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class Source {
+  private static final int BATCH_SIZE;
+
+  private static final Logger LOGGER = LoggerFactory.getLogger(Source.class);
+
+  private final List<ActorHandle<Receiver>> receivers;
+
+  static {
+    String batchSizeString = System.getenv().get("PERF_TEST_BATCH_SIZE");
+    if (batchSizeString != null) {
+      BATCH_SIZE = Integer.valueOf(batchSizeString);
+    } else {
+      BATCH_SIZE = 1000;
+    }
+  }
+
+  public Source(List<ActorHandle<Receiver>> receivers) {
+    this.receivers = receivers;
+  }
+
+  public boolean startTest(
+      boolean hasReturn, boolean ignoreReturn, int argSize, boolean useDirectByteBuffer) {
+    LOGGER.info("Source startTest");
+    byte[] bytes = null;
+    ByteBuffer buffer = null;
+    if (argSize > 0) {
+      bytes = new byte[argSize];
+      new Random().nextBytes(bytes);
+      buffer = ByteBuffer.wrap(bytes);
+    } else {
+      Preconditions.checkState(!useDirectByteBuffer);
+    }
+
+    // Wait for actors to be created.
+    for (ActorHandle<Receiver> receiver : receivers) {
+      receiver.task(Receiver::ping).remote().get();
+    }
+
+    LOGGER.info(
+        "Started executing tasks, useDirectByteBuffer: {}, argSize: {}, has return: {}",
+        useDirectByteBuffer,
+        argSize,
+        hasReturn);
+
+    List<List<ObjectRef<Integer>>> returnObjects = new ArrayList<>();
+    returnObjects.add(new ArrayList<>());
+    returnObjects.add(new ArrayList<>());
+
+    long startTime = System.currentTimeMillis();
+    int numTasks = 0;
+    long lastReport = 0;
+    long totalTime = 0;
+    long batchCount = 0;
+    while (true) {
+      numTasks++;
+      boolean batchEnd = numTasks % BATCH_SIZE == 0;
+      for (ActorHandle<Receiver> receiver : receivers) {
+        if (hasReturn || batchEnd) {
+          ObjectRef<Integer> returnObject;
+          if (useDirectByteBuffer) {
+            returnObject = receiver.task(Receiver::byteBufferHasReturn, buffer).remote();
+          } else if (argSize > 0) {
+            returnObject = receiver.task(Receiver::bytesHasReturn, bytes).remote();
+          } else {
+            returnObject = receiver.task(Receiver::noArgsHasReturn).remote();
+          }
+          returnObjects.get(1).add(returnObject);
+        } else {
+          if (useDirectByteBuffer) {
+            receiver.task(Receiver::byteBufferNoReturn, buffer).remote();
+          } else if (argSize > 0) {
+            receiver.task(Receiver::bytesNoReturn, bytes).remote();
+          } else {
+            receiver.task(Receiver::noArgsNoReturn).remote();
+          }
+        }
+      }
+
+      if (batchEnd) {
+        batchCount++;
+        long getBeginTs = System.currentTimeMillis();
+        Ray.get(returnObjects.get(0));
+        long rt = System.currentTimeMillis() - getBeginTs;
+        totalTime += rt;
+        returnObjects.set(0, returnObjects.get(1));
+        returnObjects.set(1, new ArrayList<>());
+
+        long elapsedTime = System.currentTimeMillis() - startTime;
+        if (elapsedTime / 60000 > lastReport) {
+          lastReport = elapsedTime / 60000;
+          LOGGER.info(
+              "Finished executing {} tasks in {} ms, useDirectByteBuffer: {}, argSize: {}, "
+                  + "has return: {}, avg get rt: {}",
+              numTasks,
+              elapsedTime,
+              useDirectByteBuffer,
+              argSize,
+              hasReturn,
+              totalTime / (float) batchCount);
+        }
+      }
+    }
+  }
+}

java/performance_test/src/main/java/io/ray/performancetest/test/ActorPerformanceTestBase.java

@@ -0,0 +1,76 @@
+package io.ray.performancetest.test;
+
+import com.google.common.base.Preconditions;
+import io.ray.api.ActorHandle;
+import io.ray.api.ObjectRef;
+import io.ray.api.Ray;
+import io.ray.performancetest.Receiver;
+import io.ray.performancetest.Source;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.stream.Collectors;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class ActorPerformanceTestBase {
+
+  private static final Logger LOGGER = LoggerFactory.getLogger(ActorPerformanceTestBase.class);
+
+  public static void run(
+      String[] args,
+      int[] layers,
+      int[] actorsPerLayer,
+      boolean hasReturn,
+      boolean ignoreReturn,
+      int argSize,
+      boolean useDirectByteBuffer,
+      int numJavaWorkerPerProcess) {
+    System.setProperty(
+        "ray.job.num-java-workers-per-process", String.valueOf(numJavaWorkerPerProcess));
+    Ray.init();
+    try {
+      // TODO: Support more layers.
+      Preconditions.checkState(layers.length == 2);
+      Preconditions.checkState(actorsPerLayer.length == layers.length);
+      for (int i = 0; i < layers.length; i++) {
+        Preconditions.checkState(layers[i] > 0);
+        Preconditions.checkState(actorsPerLayer[i] > 0);
+      }
+
+      List<ActorHandle<Receiver>> receivers = new ArrayList<>();
+      for (int i = 0; i < layers[1]; i++) {
+        int nodeIndex = layers[0] + i;
+        for (int j = 0; j < actorsPerLayer[1]; j++) {
+          receivers.add(Ray.actor(Receiver::new).remote());
+        }
+      }
+
+      List<ActorHandle<Source>> sources = new ArrayList<>();
+      for (int i = 0; i < layers[0]; i++) {
+        int nodeIndex = i;
+        for (int j = 0; j < actorsPerLayer[0]; j++) {
+          sources.add(Ray.actor(Source::new, receivers).remote());
+        }
+      }
+
+      List<ObjectRef<Boolean>> results =
+          sources.stream()
+              .map(
+                  source ->
+                      source
+                          .task(
+                              Source::startTest,
+                              hasReturn,
+                              ignoreReturn,
+                              argSize,
+                              useDirectByteBuffer)
+                          .remote())
+              .collect(Collectors.toList());
+
+      Ray.get(results);
+    } catch (Throwable e) {
+      LOGGER.error("Run test failed.", e);
+      throw e;
+    }
+  }
+}

java/performance_test/src/main/java/io/ray/performancetest/test/ActorPerformanceTestCase1.java

@@ -0,0 +1,27 @@
+package io.ray.performancetest.test;
+
+/**
+ * 1-to-1 ray call, one receiving actor and one sending actor, test the throughput of the engine
+ * itself.
+ */
+public class ActorPerformanceTestCase1 {
+
+  public static void main(String[] args) {
+    final int[] layers = new int[] {1, 1};
+    final int[] actorsPerLayer = new int[] {1, 1};
+    final boolean hasReturn = false;
+    final int argSize = 0;
+    final boolean useDirectByteBuffer = false;
+    final boolean ignoreReturn = false;
+    final int numJavaWorkerPerProcess = 1;
+    ActorPerformanceTestBase.run(
+        args,
+        layers,
+        actorsPerLayer,
+        hasReturn,
+        ignoreReturn,
+        argSize,
+        useDirectByteBuffer,
+        numJavaWorkerPerProcess);
+  }
+}

java/test.sh

@@ -41,6 +41,24 @@ run_testng() {
     fi
 }
 
+run_timeout() {
+  local pid
+  timeout=$1
+  shift 1
+  "$@" &
+  pid=$!
+  sleep "$timeout"
+  if ps -p $pid > /dev/null
+  then
+    echo "run_timeout process exists, kill it."
+    kill -9 $pid
+  else
+    echo "run_timeout process not exist."
+    cat /tmp/ray/session_latest/logs/java-core-driver-*$pid*
+    exit 1
+  fi
+}
+
 pushd "$ROOT_DIR"/..
 echo "Build java maven deps."
 bazel build //java:gen_maven_deps
@@ -114,3 +132,10 @@ mvn -Dorg.slf4j.simpleLogger.defaultLogLevel=WARN clean install -DskipTests -Dch
 # Ensure mvn test works
 mvn test -pl test -Dtest="io.ray.test.HelloWorldTest"
 popd
+
+pushd "$ROOT_DIR"
+echo "Running performance test."
+run_timeout 60 java -cp "$ROOT_DIR"/../bazel-bin/java/all_tests_deploy.jar io.ray.performancetest.test.ActorPerformanceTestCase1
+# The performance process may be killed by run_timeout, so clear ray here.
+ray stop
+popd

src/ray/common/grpc_util.h

@@ -35,7 +35,10 @@ class MessageWrapper {
   /// The input message will be **copied** into this object.
   ///
   /// \param message The protobuf message.
-  explicit MessageWrapper(const Message message)
+  explicit MessageWrapper(const Message &message)
+      : message_(std::make_shared<Message>(message)) {}
+
+  explicit MessageWrapper(Message &&message)
       : message_(std::make_shared<Message>(std::move(message))) {}
 
   /// Construct from a protobuf message shared_ptr.
@@ -115,7 +118,8 @@ inline std::vector<ID> IdVectorFromProtobuf(
 
 /// Converts a Protobuf map to a `unordered_map`.
 template <class K, class V>
-inline std::unordered_map<K, V> MapFromProtobuf(::google::protobuf::Map<K, V> pb_map) {
+inline std::unordered_map<K, V> MapFromProtobuf(
+    const ::google::protobuf::Map<K, V> &pb_map) {
   return std::unordered_map<K, V>(pb_map.begin(), pb_map.end());
 }
 

src/ray/common/task/task_spec.cc

@@ -53,24 +53,24 @@ bool TaskSpecification::PlacementGroupCaptureChildTasks() const {
 }
 
 void TaskSpecification::ComputeResources() {
-  auto required_resources = MapFromProtobuf(message_->required_resources());
-  auto required_placement_resources =
-      MapFromProtobuf(message_->required_placement_resources());
-  if (required_placement_resources.empty()) {
-    required_placement_resources = required_resources;
-  }
+  auto &required_resources = message_->required_resources();
 
   if (required_resources.empty()) {
     // A static nil object is used here to avoid allocating the empty object every time.
     required_resources_ = ResourceSet::Nil();
   } else {
-    required_resources_.reset(new ResourceSet(required_resources));
+    required_resources_.reset(new ResourceSet(MapFromProtobuf(required_resources)));
   }
 
+  auto &required_placement_resources = message_->required_placement_resources().empty()
+                                           ? required_resources
+                                           : message_->required_placement_resources();
+
   if (required_placement_resources.empty()) {
     required_placement_resources_ = ResourceSet::Nil();
   } else {
-    required_placement_resources_.reset(new ResourceSet(required_placement_resources));
+    required_placement_resources_.reset(
+        new ResourceSet(MapFromProtobuf(required_placement_resources)));
   }
 
   if (!IsActorTask()) {
@@ -174,14 +174,15 @@ std::vector<ObjectID> TaskSpecification::GetDependencyIds() const {
   return dependencies;
 }
 
-std::vector<rpc::ObjectReference> TaskSpecification::GetDependencies() const {
+std::vector<rpc::ObjectReference> TaskSpecification::GetDependencies(
+    bool add_dummy_dependency) const {
   std::vector<rpc::ObjectReference> dependencies;
   for (size_t i = 0; i < NumArgs(); ++i) {
     if (ArgByRef(i)) {
       dependencies.push_back(message_->args(i).object_ref());
     }
   }
-  if (IsActorTask()) {
+  if (add_dummy_dependency && IsActorTask()) {
     const auto &dummy_ref =
         GetReferenceForActorDummyObject(PreviousActorTaskDummyObjectId());
     dependencies.push_back(dummy_ref);

src/ray/common/task/task_spec.h

@@ -36,10 +36,15 @@ class TaskSpecification : public MessageWrapper<rpc::TaskSpec> {
   TaskSpecification() {}
 
   /// Construct from a protobuf message object.
-  /// The input message will be **copied** into this object.
+  /// The input message will be copied/moved into this object.
   ///
   /// \param message The protobuf message.
-  explicit TaskSpecification(rpc::TaskSpec message) : MessageWrapper(message) {
+  explicit TaskSpecification(rpc::TaskSpec &&message)
+      : MessageWrapper(std::move(message)) {
+    ComputeResources();
+  }
+
+  explicit TaskSpecification(const rpc::TaskSpec &message) : MessageWrapper(message) {
     ComputeResources();
   }
 
@@ -127,9 +132,10 @@ class TaskSpecification : public MessageWrapper<rpc::TaskSpec> {
 
   /// Return the dependencies of this task. This is recomputed each time, so it can
   /// be used if the task spec is mutated.
-  ///
+  /// \param add_dummy_dependency whether to add a dummy object in the returned objects.
   /// \return The recomputed dependencies for the task.
-  std::vector<rpc::ObjectReference> GetDependencies() const;
+  std::vector<rpc::ObjectReference> GetDependencies(
+      bool add_dummy_dependency = true) const;
 
   std::string GetDebuggerBreakpoint() const;
 

src/ray/core_worker/core_worker.cc

@@ -2219,7 +2219,7 @@ void CoreWorker::HandlePushTask(const rpc::PushTaskRequest &request,
   // execution service.
   if (request.task_spec().type() == TaskType::ACTOR_TASK) {
     task_execution_service_.post(
-        [=] {
+        [this, request, reply, send_reply_callback = std::move(send_reply_callback)] {
           // We have posted an exit task onto the main event loop,
           // so shouldn't bother executing any further work.
           if (exiting_) return;

src/ray/core_worker/test/scheduling_queue_test.cc

@@ -42,12 +42,12 @@ TEST(SchedulingQueueTest, TestInOrder) {
   ActorSchedulingQueue queue(io_service, waiter);
   int n_ok = 0;
   int n_rej = 0;
-  auto fn_ok = [&n_ok]() { n_ok++; };
-  auto fn_rej = [&n_rej]() { n_rej++; };
-  queue.Add(0, -1, fn_ok, fn_rej);
-  queue.Add(1, -1, fn_ok, fn_rej);
-  queue.Add(2, -1, fn_ok, fn_rej);
-  queue.Add(3, -1, fn_ok, fn_rej);
+  auto fn_ok = [&n_ok](rpc::SendReplyCallback callback) { n_ok++; };
+  auto fn_rej = [&n_rej](rpc::SendReplyCallback callback) { n_rej++; };
+  queue.Add(0, -1, fn_ok, fn_rej, nullptr);
+  queue.Add(1, -1, fn_ok, fn_rej, nullptr);
+  queue.Add(2, -1, fn_ok, fn_rej, nullptr);
+  queue.Add(3, -1, fn_ok, fn_rej, nullptr);
   io_service.run();
   ASSERT_EQ(n_ok, 4);
   ASSERT_EQ(n_rej, 0);
@@ -62,12 +62,12 @@ TEST(SchedulingQueueTest, TestWaitForObjects) {
   ActorSchedulingQueue queue(io_service, waiter);
   int n_ok = 0;
   int n_rej = 0;
-  auto fn_ok = [&n_ok]() { n_ok++; };
-  auto fn_rej = [&n_rej]() { n_rej++; };
-  queue.Add(0, -1, fn_ok, fn_rej);
-  queue.Add(1, -1, fn_ok, fn_rej, TaskID::Nil(), ObjectIdsToRefs({obj1}));
-  queue.Add(2, -1, fn_ok, fn_rej, TaskID::Nil(), ObjectIdsToRefs({obj2}));
-  queue.Add(3, -1, fn_ok, fn_rej, TaskID::Nil(), ObjectIdsToRefs({obj3}));
+  auto fn_ok = [&n_ok](rpc::SendReplyCallback callback) { n_ok++; };
+  auto fn_rej = [&n_rej](rpc::SendReplyCallback callback) { n_rej++; };
+  queue.Add(0, -1, fn_ok, fn_rej, nullptr);
+  queue.Add(1, -1, fn_ok, fn_rej, nullptr, TaskID::Nil(), ObjectIdsToRefs({obj1}));
+  queue.Add(2, -1, fn_ok, fn_rej, nullptr, TaskID::Nil(), ObjectIdsToRefs({obj2}));
+  queue.Add(3, -1, fn_ok, fn_rej, nullptr, TaskID::Nil(), ObjectIdsToRefs({obj3}));
   ASSERT_EQ(n_ok, 1);
 
   waiter.Complete(0);
@@ -87,10 +87,10 @@ TEST(SchedulingQueueTest, TestWaitForObjectsNotSubjectToSeqTimeout) {
   ActorSchedulingQueue queue(io_service, waiter);
   int n_ok = 0;
   int n_rej = 0;
-  auto fn_ok = [&n_ok]() { n_ok++; };
-  auto fn_rej = [&n_rej]() { n_rej++; };
-  queue.Add(0, -1, fn_ok, fn_rej);
-  queue.Add(1, -1, fn_ok, fn_rej, TaskID::Nil(), ObjectIdsToRefs({obj1}));
+  auto fn_ok = [&n_ok](rpc::SendReplyCallback callback) { n_ok++; };
+  auto fn_rej = [&n_rej](rpc::SendReplyCallback callback) { n_rej++; };
+  queue.Add(0, -1, fn_ok, fn_rej, nullptr);
+  queue.Add(1, -1, fn_ok, fn_rej, nullptr, TaskID::Nil(), ObjectIdsToRefs({obj1}));
   ASSERT_EQ(n_ok, 1);
   io_service.run();
   ASSERT_EQ(n_rej, 0);
@@ -104,12 +104,12 @@ TEST(SchedulingQueueTest, TestOutOfOrder) {
   ActorSchedulingQueue queue(io_service, waiter);
   int n_ok = 0;
   int n_rej = 0;
-  auto fn_ok = [&n_ok]() { n_ok++; };
-  auto fn_rej = [&n_rej]() { n_rej++; };
-  queue.Add(2, -1, fn_ok, fn_rej);
-  queue.Add(0, -1, fn_ok, fn_rej);
-  queue.Add(3, -1, fn_ok, fn_rej);
-  queue.Add(1, -1, fn_ok, fn_rej);
+  auto fn_ok = [&n_ok](rpc::SendReplyCallback callback) { n_ok++; };
+  auto fn_rej = [&n_rej](rpc::SendReplyCallback callback) { n_rej++; };
+  queue.Add(2, -1, fn_ok, fn_rej, nullptr);
+  queue.Add(0, -1, fn_ok, fn_rej, nullptr);
+  queue.Add(3, -1, fn_ok, fn_rej, nullptr);
+  queue.Add(1, -1, fn_ok, fn_rej, nullptr);
   io_service.run();
   ASSERT_EQ(n_ok, 4);
   ASSERT_EQ(n_rej, 0);
@@ -121,18 +121,18 @@ TEST(SchedulingQueueTest, TestSeqWaitTimeout) {
   ActorSchedulingQueue queue(io_service, waiter);
   int n_ok = 0;
   int n_rej = 0;
-  auto fn_ok = [&n_ok]() { n_ok++; };
-  auto fn_rej = [&n_rej]() { n_rej++; };
-  queue.Add(2, -1, fn_ok, fn_rej);
-  queue.Add(0, -1, fn_ok, fn_rej);
-  queue.Add(3, -1, fn_ok, fn_rej);
+  auto fn_ok = [&n_ok](rpc::SendReplyCallback callback) { n_ok++; };
+  auto fn_rej = [&n_rej](rpc::SendReplyCallback callback) { n_rej++; };
+  queue.Add(2, -1, fn_ok, fn_rej, nullptr);
+  queue.Add(0, -1, fn_ok, fn_rej, nullptr);
+  queue.Add(3, -1, fn_ok, fn_rej, nullptr);
   ASSERT_EQ(n_ok, 1);
   ASSERT_EQ(n_rej, 0);
   io_service.run();  // immediately triggers timeout
   ASSERT_EQ(n_ok, 1);
   ASSERT_EQ(n_rej, 2);
-  queue.Add(4, -1, fn_ok, fn_rej);
-  queue.Add(5, -1, fn_ok, fn_rej);
+  queue.Add(4, -1, fn_ok, fn_rej, nullptr);
+  queue.Add(5, -1, fn_ok, fn_rej, nullptr);
   ASSERT_EQ(n_ok, 3);
   ASSERT_EQ(n_rej, 2);
 }
@@ -143,11 +143,11 @@ TEST(SchedulingQueueTest, TestSkipAlreadyProcessedByClient) {
   ActorSchedulingQueue queue(io_service, waiter);
   int n_ok = 0;
   int n_rej = 0;
-  auto fn_ok = [&n_ok]() { n_ok++; };
-  auto fn_rej = [&n_rej]() { n_rej++; };
-  queue.Add(2, 2, fn_ok, fn_rej);
-  queue.Add(3, 2, fn_ok, fn_rej);
-  queue.Add(1, 2, fn_ok, fn_rej);
+  auto fn_ok = [&n_ok](rpc::SendReplyCallback callback) { n_ok++; };
+  auto fn_rej = [&n_rej](rpc::SendReplyCallback callback) { n_rej++; };
+  queue.Add(2, 2, fn_ok, fn_rej, nullptr);
+  queue.Add(3, 2, fn_ok, fn_rej, nullptr);
+  queue.Add(1, 2, fn_ok, fn_rej, nullptr);
   io_service.run();
   ASSERT_EQ(n_ok, 1);
   ASSERT_EQ(n_rej, 2);
@@ -158,13 +158,13 @@ TEST(SchedulingQueueTest, TestCancelQueuedTask) {
   ASSERT_TRUE(queue->TaskQueueEmpty());
   int n_ok = 0;
   int n_rej = 0;
-  auto fn_ok = [&n_ok]() { n_ok++; };
-  auto fn_rej = [&n_rej]() { n_rej++; };
-  queue->Add(-1, -1, fn_ok, fn_rej);
-  queue->Add(-1, -1, fn_ok, fn_rej);
-  queue->Add(-1, -1, fn_ok, fn_rej);
-  queue->Add(-1, -1, fn_ok, fn_rej);
-  queue->Add(-1, -1, fn_ok, fn_rej);
+  auto fn_ok = [&n_ok](rpc::SendReplyCallback callback) { n_ok++; };
+  auto fn_rej = [&n_rej](rpc::SendReplyCallback callback) { n_rej++; };
+  queue->Add(-1, -1, fn_ok, fn_rej, nullptr);
+  queue->Add(-1, -1, fn_ok, fn_rej, nullptr);
+  queue->Add(-1, -1, fn_ok, fn_rej, nullptr);
+  queue->Add(-1, -1, fn_ok, fn_rej, nullptr);
+  queue->Add(-1, -1, fn_ok, fn_rej, nullptr);
   ASSERT_TRUE(queue->CancelTaskIfFound(TaskID::Nil()));
   ASSERT_FALSE(queue->TaskQueueEmpty());
   queue->ScheduleRequests();

src/ray/core_worker/transport/direct_actor_transport.cc

@@ -59,14 +59,16 @@ void CoreWorkerDirectActorTaskSubmitter::KillActor(const ActorID &actor_id,
 }
 
 Status CoreWorkerDirectActorTaskSubmitter::SubmitTask(TaskSpecification task_spec) {
-  RAY_LOG(DEBUG) << "Submitting task " << task_spec.TaskId();
+  auto task_id = task_spec.TaskId();
+  auto actor_id = task_spec.ActorId();
+  RAY_LOG(DEBUG) << "Submitting task " << task_id;
   RAY_CHECK(task_spec.IsActorTask());
 
   bool task_queued = false;
   uint64_t send_pos = 0;
   {
     absl::MutexLock lock(&mu_);
-    auto queue = client_queues_.find(task_spec.ActorId());
+    auto queue = client_queues_.find(actor_id);
     RAY_CHECK(queue != client_queues_.end());
     if (queue->second.state != rpc::ActorTableData::DEAD) {
       // We must fix the send order prior to resolving dependencies, which may
@@ -82,7 +84,6 @@ Status CoreWorkerDirectActorTaskSubmitter::SubmitTask(TaskSpecification task_spe
   }
 
   if (task_queued) {
-    const auto actor_id = task_spec.ActorId();
     // We must release the lock before resolving the task dependencies since
     // the callback may get called in the same call stack.
     resolver_.ResolveDependencies(task_spec, [this, send_pos, actor_id]() {
@@ -99,7 +100,7 @@ Status CoreWorkerDirectActorTaskSubmitter::SubmitTask(TaskSpecification task_spe
     });
   } else {
     // Do not hold the lock while calling into task_finisher_.
-    task_finisher_->MarkTaskCanceled(task_spec.TaskId());
+    task_finisher_->MarkTaskCanceled(task_id);
     std::shared_ptr<rpc::RayException> creation_task_exception = nullptr;
     {
       absl::MutexLock lock(&mu_);
@@ -109,9 +110,8 @@ Status CoreWorkerDirectActorTaskSubmitter::SubmitTask(TaskSpecification task_spe
     auto status = Status::IOError("cancelling task of dead actor");
     // No need to increment the number of completed tasks since the actor is
     // dead.
-    RAY_UNUSED(!task_finisher_->PendingTaskFailed(task_spec.TaskId(),
-                                                  rpc::ErrorType::ACTOR_DIED, &status,
-                                                  creation_task_exception));
+    RAY_UNUSED(!task_finisher_->PendingTaskFailed(task_id, rpc::ErrorType::ACTOR_DIED,
+                                                  &status, creation_task_exception));
   }
 
   // If the task submission subsequently fails, then the client will receive
@@ -423,7 +423,10 @@ void CoreWorkerDirectTaskReceiver::HandleTask(
     const rpc::PushTaskRequest &request, rpc::PushTaskReply *reply,
     rpc::SendReplyCallback send_reply_callback) {
   RAY_CHECK(waiter_ != nullptr) << "Must call init() prior to use";
-  const TaskSpecification task_spec(request.task_spec());
+  // Use `mutable_task_spec()` here as `task_spec()` returns a const reference
+  // which doesn't work with std::move.
+  TaskSpecification task_spec(
+      std::move(*(const_cast<rpc::PushTaskRequest &>(request).mutable_task_spec())));
 
   // If GCS server is restarted after sending an actor creation task to this core worker,
   // the restarted GCS server will send the same actor creation task to the core worker
@@ -455,7 +458,8 @@ void CoreWorkerDirectTaskReceiver::HandleTask(
     }
   }
 
-  auto accept_callback = [this, reply, send_reply_callback, task_spec, resource_ids]() {
+  auto accept_callback = [this, reply, task_spec,
+                          resource_ids](rpc::SendReplyCallback send_reply_callback) {
     if (task_spec.GetMessage().skip_execution()) {
       send_reply_callback(Status::OK(), nullptr, nullptr);
       return;
@@ -522,11 +526,11 @@ void CoreWorkerDirectTaskReceiver::HandleTask(
     }
   };
 
-  auto reject_callback = [send_reply_callback]() {
+  auto reject_callback = [](rpc::SendReplyCallback send_reply_callback) {
     send_reply_callback(Status::Invalid("client cancelled stale rpc"), nullptr, nullptr);
   };
 
-  auto dependencies = task_spec.GetDependencies();
+  auto dependencies = task_spec.GetDependencies(false);
 
   if (task_spec.IsActorTask()) {
     auto it = actor_scheduling_queues_.find(task_spec.CallerWorkerId());
@@ -538,16 +542,15 @@ void CoreWorkerDirectTaskReceiver::HandleTask(
       it = result.first;
     }
 
-    // Pop the dummy actor dependency.
-    // TODO(swang): Remove this with legacy raylet code.
-    dependencies.pop_back();
     it->second->Add(request.sequence_number(), request.client_processed_up_to(),
-                    accept_callback, reject_callback, task_spec.TaskId(), dependencies);
+                    std::move(accept_callback), std::move(reject_callback),
+                    std::move(send_reply_callback), task_spec.TaskId(), dependencies);
   } else {
     // Add the normal task's callbacks to the non-actor scheduling queue.
-    normal_scheduling_queue_->Add(request.sequence_number(),
-                                  request.client_processed_up_to(), accept_callback,
-                                  reject_callback, task_spec.TaskId(), dependencies);
+    normal_scheduling_queue_->Add(
+        request.sequence_number(), request.client_processed_up_to(),
+        std::move(accept_callback), std::move(reject_callback),
+        std::move(send_reply_callback), task_spec.TaskId(), dependencies);
   }
 }
 

src/ray/core_worker/transport/direct_actor_transport.h

@@ -276,23 +276,26 @@ class CoreWorkerDirectActorTaskSubmitter
 class InboundRequest {
  public:
   InboundRequest(){};
-  InboundRequest(std::function<void()> accept_callback,
-                 std::function<void()> reject_callback, TaskID task_id,
+  InboundRequest(std::function<void(rpc::SendReplyCallback)> accept_callback,
+                 std::function<void(rpc::SendReplyCallback)> reject_callback,
+                 rpc::SendReplyCallback send_reply_callback, TaskID task_id,
                  bool has_dependencies)
-      : accept_callback_(accept_callback),
-        reject_callback_(reject_callback),
+      : accept_callback_(std::move(accept_callback)),
+        reject_callback_(std::move(reject_callback)),
+        send_reply_callback_(std::move(send_reply_callback)),
         task_id(task_id),
         has_pending_dependencies_(has_dependencies) {}
 
-  void Accept() { accept_callback_(); }
-  void Cancel() { reject_callback_(); }
+  void Accept() { accept_callback_(std::move(send_reply_callback_)); }
+  void Cancel() { reject_callback_(std::move(send_reply_callback_)); }
   bool CanExecute() const { return !has_pending_dependencies_; }
   ray::TaskID TaskID() const { return task_id; }
   void MarkDependenciesSatisfied() { has_pending_dependencies_ = false; }
 
  private:
-  std::function<void()> accept_callback_;
-  std::function<void()> reject_callback_;
+  std::function<void(rpc::SendReplyCallback)> accept_callback_;
+  std::function<void(rpc::SendReplyCallback)> reject_callback_;
+  rpc::SendReplyCallback send_reply_callback_;
   ray::TaskID task_id;
   bool has_pending_dependencies_;
 };
@@ -372,8 +375,10 @@ class BoundedExecutor {
 class SchedulingQueue {
  public:
   virtual void Add(int64_t seq_no, int64_t client_processed_up_to,
-                   std::function<void()> accept_request,
-                   std::function<void()> reject_request, TaskID task_id = TaskID::Nil(),
+                   std::function<void(rpc::SendReplyCallback)> accept_request,
+                   std::function<void(rpc::SendReplyCallback)> reject_request,
+                   rpc::SendReplyCallback send_reply_callback,
+                   TaskID task_id = TaskID::Nil(),
                    const std::vector<rpc::ObjectReference> &dependencies = {}) = 0;
   virtual void ScheduleRequests() = 0;
   virtual bool TaskQueueEmpty() const = 0;
@@ -402,8 +407,9 @@ class ActorSchedulingQueue : public SchedulingQueue {
 
   /// Add a new actor task's callbacks to the worker queue.
   void Add(int64_t seq_no, int64_t client_processed_up_to,
-           std::function<void()> accept_request, std::function<void()> reject_request,
-           TaskID task_id = TaskID::Nil(),
+           std::function<void(rpc::SendReplyCallback)> accept_request,
+           std::function<void(rpc::SendReplyCallback)> reject_request,
+           rpc::SendReplyCallback send_reply_callback, TaskID task_id = TaskID::Nil(),
            const std::vector<rpc::ObjectReference> &dependencies = {}) {
     // A seq_no of -1 means no ordering constraint. Actor tasks must be executed in order.
     RAY_CHECK(seq_no != -1);
@@ -416,7 +422,8 @@ class ActorSchedulingQueue : public SchedulingQueue {
     }
     RAY_LOG(DEBUG) << "Enqueue " << seq_no << " cur seqno " << next_seq_no_;
     pending_actor_tasks_[seq_no] =
-        InboundRequest(accept_request, reject_request, task_id, dependencies.size() > 0);
+        InboundRequest(std::move(accept_request), std::move(reject_request),
+                       std::move(send_reply_callback), task_id, dependencies.size() > 0);
     if (dependencies.size() > 0) {
       waiter_.Wait(dependencies, [seq_no, this]() {
         RAY_CHECK(boost::this_thread::get_id() == main_thread_id_);
@@ -541,15 +548,17 @@ class NormalSchedulingQueue : public SchedulingQueue {
 
   /// Add a new task's callbacks to the worker queue.
   void Add(int64_t seq_no, int64_t client_processed_up_to,
-           std::function<void()> accept_request, std::function<void()> reject_request,
-           TaskID task_id = TaskID::Nil(),
+           std::function<void(rpc::SendReplyCallback)> accept_request,
+           std::function<void(rpc::SendReplyCallback)> reject_request,
+           rpc::SendReplyCallback send_reply_callback, TaskID task_id = TaskID::Nil(),
            const std::vector<rpc::ObjectReference> &dependencies = {}) {
     absl::MutexLock lock(&mu_);
     // Normal tasks should not have ordering constraints.
     RAY_CHECK(seq_no == -1);
     // Create a InboundRequest object for the new task, and add it to the queue.
     pending_normal_tasks_.push_back(
-        InboundRequest(accept_request, reject_request, task_id, dependencies.size() > 0));
+        InboundRequest(std::move(accept_request), std::move(reject_request),
+                       std::move(send_reply_callback), task_id, dependencies.size() > 0));
   }
 
   // Search for an InboundRequest associated with the task that we are trying to cancel.

src/ray/rpc/client_call.h

@@ -66,7 +66,8 @@ class ClientCallImpl : public ClientCall {
   ///
   /// \param[in] callback The callback function to handle the reply.
   explicit ClientCallImpl(const ClientCallback<Reply> &callback, std::string call_name)
-      : callback_(callback), call_name_(std::move(call_name)) {}
+      : callback_(std::move(const_cast<ClientCallback<Reply> &>(callback))),
+        call_name_(std::move(call_name)) {}
 
   Status GetStatus() override {
     absl::MutexLock lock(&mutex_);

src/ray/rpc/worker/core_worker_client.h

@@ -285,7 +285,9 @@ class CoreWorkerClient : public std::enable_shared_from_this<CoreWorkerClient>,
 
     {
       absl::MutexLock lock(&mutex_);
-      send_queue_.push_back(std::make_pair(std::move(request), callback));
+      send_queue_.push_back(std::make_pair(
+          std::move(request),
+          std::move(const_cast<ClientCallback<PushTaskReply> &>(callback))));
     }
     SendRequests();
   }
@@ -311,13 +313,13 @@ class CoreWorkerClient : public std::enable_shared_from_this<CoreWorkerClient>,
       send_queue_.pop_front();
 
       auto request = std::move(pair.first);
-      auto callback = pair.second;
       int64_t task_size = RequestSizeInBytes(*request);
       int64_t seq_no = request->sequence_number();
       request->set_client_processed_up_to(max_finished_seq_no_);
       rpc_bytes_in_flight_ += task_size;
 
-      auto rpc_callback = [this, this_ptr, seq_no, task_size, callback](
+      auto rpc_callback = [this, this_ptr, seq_no, task_size,
+                           callback = std::move(pair.second)](
                               Status status, const rpc::PushTaskReply &reply) {
         {
           absl::MutexLock lock(&mutex_);
@@ -331,8 +333,8 @@ class CoreWorkerClient : public std::enable_shared_from_this<CoreWorkerClient>,
         callback(status, reply);
       };
 
-      RAY_UNUSED(INVOKE_RPC_CALL(CoreWorkerService, PushTask, *request, rpc_callback,
-                                 grpc_client_));
+      RAY_UNUSED(INVOKE_RPC_CALL(CoreWorkerService, PushTask, *request,
+                                 std::move(rpc_callback), grpc_client_));
     }
 
     if (!send_queue_.empty()) {