Introduce reusable execution to canonical interface -- HAL.

This CL modifies the canonical interface for reusable executions:
- Add new interface: IExecution with compute and computeFenced methods
- Add new method IPreparedModel::createExecution

In NNAPI runtime, the new interface IExecution is used to
memoize request-specific execution resources (e.g. converted HAL
request). The expected usage is that, IPreparedModel::createExecution
will be invoked in the first computation of a reusable NDK ANNExecution
object, and IExecution::compute* will be invoked repeatedly.

The IPreparedModel::execute* methods are preserved to avoid redundant
object creation and memoization overhead for a single-time
(non-reusable) execution.

For a vendor implementing the canonical interfaces, only the
IPreparedModel::execute* methods will be called because there is
currently no reusable execution at HAL interface. A DefaultExecution
implementation is provided to reduce the work needed on the vendor side.

Bug: 184073769
Test: NNT_static
Test: neuralnetworks_utils_hal_1_0_test
Test: neuralnetworks_utils_hal_1_1_test
Test: neuralnetworks_utils_hal_1_2_test
Test: neuralnetworks_utils_hal_1_3_test
Test: neuralnetworks_utils_hal_common_test
Test: neuralnetworks_utils_hal_aidl_test
Change-Id: I91790bb5ccf5ae648687fe603f88ffda2c9fd2b2
Merged-In: I91790bb5ccf5ae648687fe603f88ffda2c9fd2b2
(cherry picked from commit 727a7b2104b0962509fedffe720eec508b2ee6de)
diff --git a/neuralnetworks/1.3/utils/include/nnapi/hal/1.3/Execution.h b/neuralnetworks/1.3/utils/include/nnapi/hal/1.3/Execution.h
new file mode 100644
index 0000000..06c33d4
--- /dev/null
+++ b/neuralnetworks/1.3/utils/include/nnapi/hal/1.3/Execution.h
@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * 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 ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_1_3_UTILS_EXECUTION_H
+#define ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_1_3_UTILS_EXECUTION_H
+
+#include <nnapi/IExecution.h>
+#include <nnapi/Result.h>
+#include <nnapi/Types.h>
+#include <nnapi/hal/CommonUtils.h>
+
+#include "PreparedModel.h"
+
+#include <memory>
+#include <utility>
+#include <vector>
+
+// See hardware/interfaces/neuralnetworks/utils/README.md for more information on HIDL interface
+// lifetimes across processes and for protecting asynchronous calls across HIDL.
+
+namespace android::hardware::neuralnetworks::V1_3::utils {
+
+class Execution final : public nn::IExecution, public std::enable_shared_from_this<Execution> {
+    struct PrivateConstructorTag {};
+
+  public:
+    static nn::GeneralResult<std::shared_ptr<const Execution>> create(
+            std::shared_ptr<const PreparedModel> preparedModel, Request request,
+            hal::utils::RequestRelocation relocation, V1_2::MeasureTiming measure,
+            OptionalTimeoutDuration loopTimeoutDuration);
+
+    Execution(PrivateConstructorTag tag, std::shared_ptr<const PreparedModel> preparedModel,
+              Request request, hal::utils::RequestRelocation relocation,
+              V1_2::MeasureTiming measure, OptionalTimeoutDuration loopTimeoutDuration);
+
+    nn::ExecutionResult<std::pair<std::vector<nn::OutputShape>, nn::Timing>> compute(
+            const nn::OptionalTimePoint& deadline) const override;
+
+    nn::GeneralResult<std::pair<nn::SyncFence, nn::ExecuteFencedInfoCallback>> computeFenced(
+            const std::vector<nn::SyncFence>& waitFor, const nn::OptionalTimePoint& deadline,
+            const nn::OptionalDuration& timeoutDurationAfterFence) const override;
+
+  private:
+    const std::shared_ptr<const PreparedModel> kPreparedModel;
+    const Request kRequest;
+    const hal::utils::RequestRelocation kRelocation;
+    const V1_2::MeasureTiming kMeasure;
+    const OptionalTimeoutDuration kLoopTimeoutDuration;
+};
+
+}  // namespace android::hardware::neuralnetworks::V1_3::utils
+
+#endif  // ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_1_3_UTILS_EXECUTION_H
diff --git a/neuralnetworks/1.3/utils/include/nnapi/hal/1.3/PreparedModel.h b/neuralnetworks/1.3/utils/include/nnapi/hal/1.3/PreparedModel.h
index 690fecc..5acba71 100644
--- a/neuralnetworks/1.3/utils/include/nnapi/hal/1.3/PreparedModel.h
+++ b/neuralnetworks/1.3/utils/include/nnapi/hal/1.3/PreparedModel.h
@@ -57,10 +57,26 @@
             const nn::OptionalDuration& loopTimeoutDuration,
             const nn::OptionalDuration& timeoutDurationAfterFence) const override;
 
+    nn::GeneralResult<nn::SharedExecution> createReusableExecution(
+            const nn::Request& request, nn::MeasureTiming measure,
+            const nn::OptionalDuration& loopTimeoutDuration) const override;
+
     nn::GeneralResult<nn::SharedBurst> configureExecutionBurst() const override;
 
     std::any getUnderlyingResource() const override;
 
+    nn::ExecutionResult<std::pair<std::vector<nn::OutputShape>, nn::Timing>> executeInternal(
+            const Request& request, V1_2::MeasureTiming measure, const OptionalTimePoint& deadline,
+            const OptionalTimeoutDuration& loopTimeoutDuration,
+            const hal::utils::RequestRelocation& relocation) const;
+
+    nn::GeneralResult<std::pair<nn::SyncFence, nn::ExecuteFencedInfoCallback>>
+    executeFencedInternal(const Request& request, const hidl_vec<hidl_handle>& waitFor,
+                          V1_2::MeasureTiming measure, const OptionalTimePoint& deadline,
+                          const OptionalTimeoutDuration& loopTimeoutDuration,
+                          const OptionalTimeoutDuration& timeoutDurationAfterFence,
+                          const hal::utils::RequestRelocation& relocation) const;
+
   private:
     nn::ExecutionResult<std::pair<std::vector<nn::OutputShape>, nn::Timing>> executeSynchronously(
             const Request& request, V1_2::MeasureTiming measure, const OptionalTimePoint& deadline,
diff --git a/neuralnetworks/1.3/utils/src/Execution.cpp b/neuralnetworks/1.3/utils/src/Execution.cpp
new file mode 100644
index 0000000..3d17cc3
--- /dev/null
+++ b/neuralnetworks/1.3/utils/src/Execution.cpp
@@ -0,0 +1,84 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Execution.h"
+
+#include "Conversions.h"
+#include "PreparedModel.h"
+#include "Utils.h"
+
+#include <android/hardware/neuralnetworks/1.0/types.h>
+#include <android/hardware/neuralnetworks/1.1/types.h>
+#include <android/hardware/neuralnetworks/1.2/types.h>
+#include <android/hardware/neuralnetworks/1.3/IPreparedModel.h>
+#include <android/hardware/neuralnetworks/1.3/types.h>
+#include <nnapi/IExecution.h>
+#include <nnapi/Result.h>
+#include <nnapi/Types.h>
+#include <nnapi/hal/CommonUtils.h>
+#include <nnapi/hal/HandleError.h>
+
+#include <memory>
+#include <utility>
+#include <vector>
+
+// See hardware/interfaces/neuralnetworks/utils/README.md for more information on HIDL interface
+// lifetimes across processes and for protecting asynchronous calls across HIDL.
+
+namespace android::hardware::neuralnetworks::V1_3::utils {
+
+nn::GeneralResult<std::shared_ptr<const Execution>> Execution::create(
+        std::shared_ptr<const PreparedModel> preparedModel, Request request,
+        hal::utils::RequestRelocation relocation, V1_2::MeasureTiming measure,
+        OptionalTimeoutDuration loopTimeoutDuration) {
+    if (preparedModel == nullptr) {
+        return NN_ERROR() << "V1_3::utils::Execution::create must have non-null preparedModel";
+    }
+
+    return std::make_shared<const Execution>(PrivateConstructorTag{}, std::move(preparedModel),
+                                             std::move(request), std::move(relocation), measure,
+                                             std::move(loopTimeoutDuration));
+}
+
+Execution::Execution(PrivateConstructorTag /*tag*/,
+                     std::shared_ptr<const PreparedModel> preparedModel, Request request,
+                     hal::utils::RequestRelocation relocation, V1_2::MeasureTiming measure,
+                     OptionalTimeoutDuration loopTimeoutDuration)
+    : kPreparedModel(std::move(preparedModel)),
+      kRequest(std::move(request)),
+      kRelocation(std::move(relocation)),
+      kMeasure(measure),
+      kLoopTimeoutDuration(std::move(loopTimeoutDuration)) {}
+
+nn::ExecutionResult<std::pair<std::vector<nn::OutputShape>, nn::Timing>> Execution::compute(
+        const nn::OptionalTimePoint& deadline) const {
+    const auto hidlDeadline = NN_TRY(hal::utils::makeExecutionFailure(convert(deadline)));
+    return kPreparedModel->executeInternal(kRequest, kMeasure, hidlDeadline, kLoopTimeoutDuration,
+                                           kRelocation);
+}
+
+nn::GeneralResult<std::pair<nn::SyncFence, nn::ExecuteFencedInfoCallback>> Execution::computeFenced(
+        const std::vector<nn::SyncFence>& waitFor, const nn::OptionalTimePoint& deadline,
+        const nn::OptionalDuration& timeoutDurationAfterFence) const {
+    const auto hidlWaitFor = NN_TRY(hal::utils::convertSyncFences(waitFor));
+    const auto hidlDeadline = NN_TRY(convert(deadline));
+    const auto hidlTimeoutDurationAfterFence = NN_TRY(convert(timeoutDurationAfterFence));
+    return kPreparedModel->executeFencedInternal(kRequest, hidlWaitFor, kMeasure, hidlDeadline,
+                                                 kLoopTimeoutDuration,
+                                                 hidlTimeoutDurationAfterFence, kRelocation);
+}
+
+}  // namespace android::hardware::neuralnetworks::V1_3::utils
diff --git a/neuralnetworks/1.3/utils/src/PreparedModel.cpp b/neuralnetworks/1.3/utils/src/PreparedModel.cpp
index fd7f8f2..5163e8a 100644
--- a/neuralnetworks/1.3/utils/src/PreparedModel.cpp
+++ b/neuralnetworks/1.3/utils/src/PreparedModel.cpp
@@ -18,6 +18,7 @@
 
 #include "Callbacks.h"
 #include "Conversions.h"
+#include "Execution.h"
 #include "Utils.h"
 
 #include <android/hardware/neuralnetworks/1.0/types.h>
@@ -139,8 +140,10 @@
         const nn::OptionalDuration& loopTimeoutDuration) const {
     // Ensure that request is ready for IPC.
     std::optional<nn::Request> maybeRequestInShared;
-    const nn::Request& requestInShared = NN_TRY(hal::utils::makeExecutionFailure(
-            hal::utils::flushDataFromPointerToShared(&request, &maybeRequestInShared)));
+    hal::utils::RequestRelocation relocation;
+    const nn::Request& requestInShared =
+            NN_TRY(hal::utils::makeExecutionFailure(hal::utils::convertRequestFromPointerToShared(
+                    &request, &maybeRequestInShared, &relocation)));
 
     const auto hidlRequest = NN_TRY(hal::utils::makeExecutionFailure(convert(requestInShared)));
     const auto hidlMeasure = NN_TRY(hal::utils::makeExecutionFailure(convert(measure)));
@@ -148,16 +151,27 @@
     const auto hidlLoopTimeoutDuration =
             NN_TRY(hal::utils::makeExecutionFailure(convert(loopTimeoutDuration)));
 
+    return executeInternal(hidlRequest, hidlMeasure, hidlDeadline, hidlLoopTimeoutDuration,
+                           relocation);
+}
+
+nn::ExecutionResult<std::pair<std::vector<nn::OutputShape>, nn::Timing>>
+PreparedModel::executeInternal(const Request& request, V1_2::MeasureTiming measure,
+                               const OptionalTimePoint& deadline,
+                               const OptionalTimeoutDuration& loopTimeoutDuration,
+                               const hal::utils::RequestRelocation& relocation) const {
+    if (relocation.input) {
+        relocation.input->flush();
+    }
+
     auto result = kExecuteSynchronously
-                          ? executeSynchronously(hidlRequest, hidlMeasure, hidlDeadline,
-                                                 hidlLoopTimeoutDuration)
-                          : executeAsynchronously(hidlRequest, hidlMeasure, hidlDeadline,
-                                                  hidlLoopTimeoutDuration);
+                          ? executeSynchronously(request, measure, deadline, loopTimeoutDuration)
+                          : executeAsynchronously(request, measure, deadline, loopTimeoutDuration);
     auto [outputShapes, timing] = NN_TRY(std::move(result));
 
-    NN_TRY(hal::utils::makeExecutionFailure(
-            hal::utils::unflushDataFromSharedToPointer(request, maybeRequestInShared)));
-
+    if (relocation.output) {
+        relocation.output->flush();
+    }
     return std::make_pair(std::move(outputShapes), timing);
 }
 
@@ -168,8 +182,9 @@
                              const nn::OptionalDuration& timeoutDurationAfterFence) const {
     // Ensure that request is ready for IPC.
     std::optional<nn::Request> maybeRequestInShared;
-    const nn::Request& requestInShared =
-            NN_TRY(hal::utils::flushDataFromPointerToShared(&request, &maybeRequestInShared));
+    hal::utils::RequestRelocation relocation;
+    const nn::Request& requestInShared = NN_TRY(hal::utils::convertRequestFromPointerToShared(
+            &request, &maybeRequestInShared, &relocation));
 
     const auto hidlRequest = NN_TRY(convert(requestInShared));
     const auto hidlWaitFor = NN_TRY(hal::utils::convertSyncFences(waitFor));
@@ -178,27 +193,58 @@
     const auto hidlLoopTimeoutDuration = NN_TRY(convert(loopTimeoutDuration));
     const auto hidlTimeoutDurationAfterFence = NN_TRY(convert(timeoutDurationAfterFence));
 
+    return executeFencedInternal(hidlRequest, hidlWaitFor, hidlMeasure, hidlDeadline,
+                                 hidlLoopTimeoutDuration, hidlTimeoutDurationAfterFence,
+                                 relocation);
+}
+
+nn::GeneralResult<std::pair<nn::SyncFence, nn::ExecuteFencedInfoCallback>>
+PreparedModel::executeFencedInternal(const Request& request, const hidl_vec<hidl_handle>& waitFor,
+                                     V1_2::MeasureTiming measure, const OptionalTimePoint& deadline,
+                                     const OptionalTimeoutDuration& loopTimeoutDuration,
+                                     const OptionalTimeoutDuration& timeoutDurationAfterFence,
+                                     const hal::utils::RequestRelocation& relocation) const {
+    if (relocation.input) {
+        relocation.input->flush();
+    }
+
     auto cb = hal::utils::CallbackValue(fencedExecutionCallback);
 
-    const auto ret = kPreparedModel->executeFenced(hidlRequest, hidlWaitFor, hidlMeasure,
-                                                   hidlDeadline, hidlLoopTimeoutDuration,
-                                                   hidlTimeoutDurationAfterFence, cb);
+    const auto ret =
+            kPreparedModel->executeFenced(request, waitFor, measure, deadline, loopTimeoutDuration,
+                                          timeoutDurationAfterFence, cb);
     HANDLE_TRANSPORT_FAILURE(ret);
     auto [syncFence, callback] = NN_TRY(cb.take());
 
     // If executeFenced required the request memory to be moved into shared memory, block here until
     // the fenced execution has completed and flush the memory back.
-    if (maybeRequestInShared.has_value()) {
+    if (relocation.output) {
         const auto state = syncFence.syncWait({});
         if (state != nn::SyncFence::FenceState::SIGNALED) {
             return NN_ERROR() << "syncWait failed with " << state;
         }
-        NN_TRY(hal::utils::unflushDataFromSharedToPointer(request, maybeRequestInShared));
+        relocation.output->flush();
     }
 
     return std::make_pair(std::move(syncFence), std::move(callback));
 }
 
+nn::GeneralResult<nn::SharedExecution> PreparedModel::createReusableExecution(
+        const nn::Request& request, nn::MeasureTiming measure,
+        const nn::OptionalDuration& loopTimeoutDuration) const {
+    // Ensure that request is ready for IPC.
+    std::optional<nn::Request> maybeRequestInShared;
+    hal::utils::RequestRelocation relocation;
+    const nn::Request& requestInShared = NN_TRY(hal::utils::convertRequestFromPointerToShared(
+            &request, &maybeRequestInShared, &relocation));
+
+    auto hidlRequest = NN_TRY(convert(requestInShared));
+    auto hidlMeasure = NN_TRY(convert(measure));
+    auto hidlLoopTimeoutDuration = NN_TRY(convert(loopTimeoutDuration));
+    return Execution::create(shared_from_this(), std::move(hidlRequest), std::move(relocation),
+                             hidlMeasure, std::move(hidlLoopTimeoutDuration));
+}
+
 nn::GeneralResult<nn::SharedBurst> PreparedModel::configureExecutionBurst() const {
     auto self = shared_from_this();
     auto fallback = [preparedModel = std::move(self)](
diff --git a/neuralnetworks/1.3/utils/test/PreparedModelTest.cpp b/neuralnetworks/1.3/utils/test/PreparedModelTest.cpp
index 5303c2a..6dbbd6b 100644
--- a/neuralnetworks/1.3/utils/test/PreparedModelTest.cpp
+++ b/neuralnetworks/1.3/utils/test/PreparedModelTest.cpp
@@ -22,6 +22,7 @@
 #include <android/hardware/neuralnetworks/1.3/IFencedExecutionCallback.h>
 #include <gmock/gmock.h>
 #include <gtest/gtest.h>
+#include <nnapi/IExecution.h>
 #include <nnapi/IPreparedModel.h>
 #include <nnapi/TypeUtils.h>
 #include <nnapi/Types.h>
@@ -462,6 +463,363 @@
     EXPECT_EQ(result.error().code, nn::ErrorStatus::DEAD_OBJECT);
 }
 
+TEST(PreparedModelTest, reusableExecuteSync) {
+    // setup call
+    const uint32_t kNumberOfComputations = 2;
+    const auto mockPreparedModel = createMockPreparedModel();
+    const auto preparedModel =
+            PreparedModel::create(mockPreparedModel, /*executeSynchronously=*/true).value();
+    EXPECT_CALL(*mockPreparedModel, executeSynchronously_1_3(_, _, _, _, _))
+            .Times(kNumberOfComputations)
+            .WillRepeatedly(
+                    Invoke(makeExecuteSynchronously(V1_3::ErrorStatus::NONE, {}, kNoTiming)));
+
+    // create execution
+    const auto createResult = preparedModel->createReusableExecution({}, {}, {});
+    ASSERT_TRUE(createResult.has_value())
+            << "Failed with " << createResult.error().code << ": " << createResult.error().message;
+    ASSERT_NE(createResult.value(), nullptr);
+
+    // invoke compute repeatedly
+    for (uint32_t i = 0; i < kNumberOfComputations; i++) {
+        const auto computeResult = createResult.value()->compute({});
+        EXPECT_TRUE(computeResult.has_value()) << "Failed with " << computeResult.error().code
+                                               << ": " << computeResult.error().message;
+    }
+}
+
+TEST(PreparedModelTest, reusableExecuteSyncError) {
+    // setup test
+    const auto mockPreparedModel = createMockPreparedModel();
+    const auto preparedModel =
+            PreparedModel::create(mockPreparedModel, /*executeSynchronously=*/true).value();
+    EXPECT_CALL(*mockPreparedModel, executeSynchronously_1_3(_, _, _, _, _))
+            .Times(1)
+            .WillOnce(Invoke(
+                    makeExecuteSynchronously(V1_3::ErrorStatus::GENERAL_FAILURE, {}, kNoTiming)));
+
+    // create execution
+    const auto createResult = preparedModel->createReusableExecution({}, {}, {});
+    ASSERT_TRUE(createResult.has_value())
+            << "Failed with " << createResult.error().code << ": " << createResult.error().message;
+    ASSERT_NE(createResult.value(), nullptr);
+
+    // invoke compute
+    const auto computeResult = createResult.value()->compute({});
+    ASSERT_FALSE(computeResult.has_value());
+    EXPECT_EQ(computeResult.error().code, nn::ErrorStatus::GENERAL_FAILURE);
+}
+
+TEST(PreparedModelTest, reusableExecuteSyncTransportFailure) {
+    // setup test
+    const auto mockPreparedModel = createMockPreparedModel();
+    const auto preparedModel =
+            PreparedModel::create(mockPreparedModel, /*executeSynchronously=*/true).value();
+    EXPECT_CALL(*mockPreparedModel, executeSynchronously_1_3(_, _, _, _, _))
+            .Times(1)
+            .WillOnce(InvokeWithoutArgs(makeGeneralTransportFailure));
+
+    // create execution
+    const auto createResult = preparedModel->createReusableExecution({}, {}, {});
+    ASSERT_TRUE(createResult.has_value())
+            << "Failed with " << createResult.error().code << ": " << createResult.error().message;
+    ASSERT_NE(createResult.value(), nullptr);
+
+    // invoke compute
+    const auto computeResult = createResult.value()->compute({});
+    ASSERT_FALSE(computeResult.has_value());
+    EXPECT_EQ(computeResult.error().code, nn::ErrorStatus::GENERAL_FAILURE);
+}
+
+TEST(PreparedModelTest, reusableExecuteSyncDeadObject) {
+    // setup test
+    const auto mockPreparedModel = createMockPreparedModel();
+    const auto preparedModel =
+            PreparedModel::create(mockPreparedModel, /*executeSynchronously=*/true).value();
+    EXPECT_CALL(*mockPreparedModel, executeSynchronously_1_3(_, _, _, _, _))
+            .Times(1)
+            .WillOnce(InvokeWithoutArgs(makeDeadObjectFailure));
+
+    // create execution
+    const auto createResult = preparedModel->createReusableExecution({}, {}, {});
+    ASSERT_TRUE(createResult.has_value())
+            << "Failed with " << createResult.error().code << ": " << createResult.error().message;
+    ASSERT_NE(createResult.value(), nullptr);
+
+    // invoke compute
+    const auto computeResult = createResult.value()->compute({});
+    ASSERT_FALSE(computeResult.has_value());
+    EXPECT_EQ(computeResult.error().code, nn::ErrorStatus::DEAD_OBJECT);
+}
+
+TEST(PreparedModelTest, reusableExecuteAsync) {
+    // setup call
+    const uint32_t kNumberOfComputations = 2;
+    const auto mockPreparedModel = createMockPreparedModel();
+    const auto preparedModel =
+            PreparedModel::create(mockPreparedModel, /*executeSynchronously=*/false).value();
+    EXPECT_CALL(*mockPreparedModel, execute_1_3(_, _, _, _, _))
+            .Times(kNumberOfComputations)
+            .WillRepeatedly(Invoke(makeExecuteAsynchronously(
+                    V1_3::ErrorStatus::NONE, V1_3::ErrorStatus::NONE, {}, kNoTiming)));
+
+    // create execution
+    const auto createResult = preparedModel->createReusableExecution({}, {}, {});
+    ASSERT_TRUE(createResult.has_value())
+            << "Failed with " << createResult.error().code << ": " << createResult.error().message;
+    ASSERT_NE(createResult.value(), nullptr);
+
+    // invoke compute repeatedly
+    for (uint32_t i = 0; i < kNumberOfComputations; i++) {
+        const auto computeResult = createResult.value()->compute({});
+        EXPECT_TRUE(computeResult.has_value()) << "Failed with " << computeResult.error().code
+                                               << ": " << computeResult.error().message;
+    }
+}
+
+TEST(PreparedModelTest, reusableExecuteAsyncLaunchError) {
+    // setup test
+    const auto mockPreparedModel = createMockPreparedModel();
+    const auto preparedModel =
+            PreparedModel::create(mockPreparedModel, /*executeSynchronously=*/false).value();
+    EXPECT_CALL(*mockPreparedModel, execute_1_3(_, _, _, _, _))
+            .Times(1)
+            .WillOnce(Invoke(makeExecuteAsynchronously(V1_3::ErrorStatus::GENERAL_FAILURE,
+                                                       V1_3::ErrorStatus::GENERAL_FAILURE, {},
+                                                       kNoTiming)));
+
+    // create execution
+    const auto createResult = preparedModel->createReusableExecution({}, {}, {});
+    ASSERT_TRUE(createResult.has_value())
+            << "Failed with " << createResult.error().code << ": " << createResult.error().message;
+    ASSERT_NE(createResult.value(), nullptr);
+
+    // invoke compute
+    const auto computeResult = createResult.value()->compute({});
+    ASSERT_FALSE(computeResult.has_value());
+    EXPECT_EQ(computeResult.error().code, nn::ErrorStatus::GENERAL_FAILURE);
+}
+
+TEST(PreparedModelTest, reusableExecuteAsyncReturnError) {
+    // setup test
+    const auto mockPreparedModel = createMockPreparedModel();
+    const auto preparedModel =
+            PreparedModel::create(mockPreparedModel, /*executeSynchronously=*/false).value();
+    EXPECT_CALL(*mockPreparedModel, execute_1_3(_, _, _, _, _))
+            .Times(1)
+            .WillOnce(Invoke(makeExecuteAsynchronously(
+                    V1_3::ErrorStatus::NONE, V1_3::ErrorStatus::GENERAL_FAILURE, {}, kNoTiming)));
+
+    // run test
+    const auto result = preparedModel->execute({}, {}, {}, {});
+
+    // verify result
+    ASSERT_FALSE(result.has_value());
+    EXPECT_EQ(result.error().code, nn::ErrorStatus::GENERAL_FAILURE);
+}
+
+TEST(PreparedModelTest, reusableExecuteAsyncTransportFailure) {
+    // setup test
+    const auto mockPreparedModel = createMockPreparedModel();
+    const auto preparedModel =
+            PreparedModel::create(mockPreparedModel, /*executeSynchronously=*/false).value();
+    EXPECT_CALL(*mockPreparedModel, execute_1_3(_, _, _, _, _))
+            .Times(1)
+            .WillOnce(InvokeWithoutArgs(makeGeneralTransportFailure));
+
+    // create execution
+    const auto createResult = preparedModel->createReusableExecution({}, {}, {});
+    ASSERT_TRUE(createResult.has_value())
+            << "Failed with " << createResult.error().code << ": " << createResult.error().message;
+    ASSERT_NE(createResult.value(), nullptr);
+
+    // invoke compute
+    const auto computeResult = createResult.value()->compute({});
+    ASSERT_FALSE(computeResult.has_value());
+    EXPECT_EQ(computeResult.error().code, nn::ErrorStatus::GENERAL_FAILURE);
+}
+
+TEST(PreparedModelTest, reusableExecuteAsyncDeadObject) {
+    // setup test
+    const auto mockPreparedModel = createMockPreparedModel();
+    const auto preparedModel =
+            PreparedModel::create(mockPreparedModel, /*executeSynchronously=*/false).value();
+    EXPECT_CALL(*mockPreparedModel, execute_1_3(_, _, _, _, _))
+            .Times(1)
+            .WillOnce(InvokeWithoutArgs(makeDeadObjectFailure));
+
+    // create execution
+    const auto createResult = preparedModel->createReusableExecution({}, {}, {});
+    ASSERT_TRUE(createResult.has_value())
+            << "Failed with " << createResult.error().code << ": " << createResult.error().message;
+    ASSERT_NE(createResult.value(), nullptr);
+
+    // invoke compute
+    const auto computeResult = createResult.value()->compute({});
+    ASSERT_FALSE(computeResult.has_value());
+    EXPECT_EQ(computeResult.error().code, nn::ErrorStatus::DEAD_OBJECT);
+}
+
+TEST(PreparedModelTest, reusableExecuteAsyncCrash) {
+    // setup test
+    const auto mockPreparedModel = createMockPreparedModel();
+    const auto preparedModel =
+            PreparedModel::create(mockPreparedModel, /*executeSynchronously=*/false).value();
+    const auto ret = [&mockPreparedModel]() -> hardware::Return<V1_3::ErrorStatus> {
+        mockPreparedModel->simulateCrash();
+        return V1_3::ErrorStatus::NONE;
+    };
+    EXPECT_CALL(*mockPreparedModel, execute_1_3(_, _, _, _, _))
+            .Times(1)
+            .WillOnce(InvokeWithoutArgs(ret));
+
+    // create execution
+    const auto createResult = preparedModel->createReusableExecution({}, {}, {});
+    ASSERT_TRUE(createResult.has_value())
+            << "Failed with " << createResult.error().code << ": " << createResult.error().message;
+    ASSERT_NE(createResult.value(), nullptr);
+
+    // invoke compute
+    const auto computeResult = createResult.value()->compute({});
+    ASSERT_FALSE(computeResult.has_value());
+    EXPECT_EQ(computeResult.error().code, nn::ErrorStatus::DEAD_OBJECT);
+}
+
+TEST(PreparedModelTest, reusableExecuteFenced) {
+    // setup call
+    const uint32_t kNumberOfComputations = 2;
+    const auto mockPreparedModel = createMockPreparedModel();
+    const auto preparedModel =
+            PreparedModel::create(mockPreparedModel, /*executeSynchronously=*/true).value();
+    const auto mockCallback = MockFencedExecutionCallback::create();
+    EXPECT_CALL(*mockCallback, getExecutionInfo(_))
+            .Times(kNumberOfComputations)
+            .WillRepeatedly(Invoke(makeExecuteFencedCallbackReturn(V1_3::ErrorStatus::NONE,
+                                                                   kNoTiming, kNoTiming)));
+    EXPECT_CALL(*mockPreparedModel, executeFenced(_, _, _, _, _, _, _))
+            .Times(kNumberOfComputations)
+            .WillRepeatedly(
+                    Invoke(makeExecuteFencedReturn(V1_3::ErrorStatus::NONE, {}, mockCallback)));
+
+    // create execution
+    const auto createResult = preparedModel->createReusableExecution({}, {}, {});
+    ASSERT_TRUE(createResult.has_value())
+            << "Failed with " << createResult.error().code << ": " << createResult.error().message;
+    ASSERT_NE(createResult.value(), nullptr);
+
+    // invoke compute repeatedly
+    for (uint32_t i = 0; i < kNumberOfComputations; i++) {
+        const auto computeResult = createResult.value()->computeFenced({}, {}, {});
+        ASSERT_TRUE(computeResult.has_value()) << "Failed with " << computeResult.error().code
+                                               << ": " << computeResult.error().message;
+        const auto& [syncFence, callback] = computeResult.value();
+        EXPECT_EQ(syncFence.syncWait({}), nn::SyncFence::FenceState::SIGNALED);
+        ASSERT_NE(callback, nullptr);
+
+        // get results from callback
+        const auto callbackResult = callback();
+        ASSERT_TRUE(callbackResult.has_value()) << "Failed with " << callbackResult.error().code
+                                                << ": " << callbackResult.error().message;
+    }
+}
+
+TEST(PreparedModelTest, reusableExecuteFencedCallbackError) {
+    // setup call
+    const auto mockPreparedModel = createMockPreparedModel();
+    const auto preparedModel =
+            PreparedModel::create(mockPreparedModel, /*executeSynchronously=*/true).value();
+    const auto mockCallback = MockFencedExecutionCallback::create();
+    EXPECT_CALL(*mockCallback, getExecutionInfo(_))
+            .Times(1)
+            .WillOnce(Invoke(makeExecuteFencedCallbackReturn(V1_3::ErrorStatus::GENERAL_FAILURE,
+                                                             kNoTiming, kNoTiming)));
+    EXPECT_CALL(*mockPreparedModel, executeFenced(_, _, _, _, _, _, _))
+            .Times(1)
+            .WillOnce(Invoke(makeExecuteFencedReturn(V1_3::ErrorStatus::NONE, {}, mockCallback)));
+
+    // create execution
+    const auto createResult = preparedModel->createReusableExecution({}, {}, {});
+    ASSERT_TRUE(createResult.has_value())
+            << "Failed with " << createResult.error().code << ": " << createResult.error().message;
+    ASSERT_NE(createResult.value(), nullptr);
+
+    // invoke compute
+    const auto computeResult = createResult.value()->computeFenced({}, {}, {});
+    ASSERT_TRUE(computeResult.has_value()) << "Failed with " << computeResult.error().code << ": "
+                                           << computeResult.error().message;
+    const auto& [syncFence, callback] = computeResult.value();
+    EXPECT_NE(syncFence.syncWait({}), nn::SyncFence::FenceState::ACTIVE);
+    ASSERT_NE(callback, nullptr);
+
+    // verify callback failure
+    const auto callbackResult = callback();
+    ASSERT_FALSE(callbackResult.has_value());
+    EXPECT_EQ(callbackResult.error().code, nn::ErrorStatus::GENERAL_FAILURE);
+}
+
+TEST(PreparedModelTest, reusableExecuteFencedError) {
+    // setup test
+    const auto mockPreparedModel = createMockPreparedModel();
+    const auto preparedModel =
+            PreparedModel::create(mockPreparedModel, /*executeSynchronously=*/true).value();
+    EXPECT_CALL(*mockPreparedModel, executeFenced(_, _, _, _, _, _, _))
+            .Times(1)
+            .WillOnce(Invoke(
+                    makeExecuteFencedReturn(V1_3::ErrorStatus::GENERAL_FAILURE, {}, nullptr)));
+
+    // create execution
+    const auto createResult = preparedModel->createReusableExecution({}, {}, {});
+    ASSERT_TRUE(createResult.has_value())
+            << "Failed with " << createResult.error().code << ": " << createResult.error().message;
+    ASSERT_NE(createResult.value(), nullptr);
+
+    // invoke compute
+    const auto computeResult = createResult.value()->computeFenced({}, {}, {});
+    ASSERT_FALSE(computeResult.has_value());
+    EXPECT_EQ(computeResult.error().code, nn::ErrorStatus::GENERAL_FAILURE);
+}
+
+TEST(PreparedModelTest, reusableExecuteFencedTransportFailure) {
+    // setup test
+    const auto mockPreparedModel = createMockPreparedModel();
+    const auto preparedModel =
+            PreparedModel::create(mockPreparedModel, /*executeSynchronously=*/true).value();
+    EXPECT_CALL(*mockPreparedModel, executeFenced(_, _, _, _, _, _, _))
+            .Times(1)
+            .WillOnce(InvokeWithoutArgs(makeGeneralTransportFailure));
+
+    // create execution
+    const auto createResult = preparedModel->createReusableExecution({}, {}, {});
+    ASSERT_TRUE(createResult.has_value())
+            << "Failed with " << createResult.error().code << ": " << createResult.error().message;
+    ASSERT_NE(createResult.value(), nullptr);
+
+    // invoke compute
+    const auto computeResult = createResult.value()->computeFenced({}, {}, {});
+    ASSERT_FALSE(computeResult.has_value());
+    EXPECT_EQ(computeResult.error().code, nn::ErrorStatus::GENERAL_FAILURE);
+}
+
+TEST(PreparedModelTest, reusableExecuteFencedDeadObject) {
+    // setup test
+    const auto mockPreparedModel = createMockPreparedModel();
+    const auto preparedModel =
+            PreparedModel::create(mockPreparedModel, /*executeSynchronously=*/true).value();
+    EXPECT_CALL(*mockPreparedModel, executeFenced(_, _, _, _, _, _, _))
+            .Times(1)
+            .WillOnce(InvokeWithoutArgs(makeDeadObjectFailure));
+
+    // create execution
+    const auto createResult = preparedModel->createReusableExecution({}, {}, {});
+    ASSERT_TRUE(createResult.has_value())
+            << "Failed with " << createResult.error().code << ": " << createResult.error().message;
+    ASSERT_NE(createResult.value(), nullptr);
+
+    // invoke compute
+    const auto computeResult = createResult.value()->computeFenced({}, {}, {});
+    ASSERT_FALSE(computeResult.has_value());
+    EXPECT_EQ(computeResult.error().code, nn::ErrorStatus::DEAD_OBJECT);
+}
 TEST(PreparedModelTest, configureExecutionBurst) {
     // setup test
     const auto mockPreparedModel = MockPreparedModel::create();