1 /*
2 * Copyright (C) 2017 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #define LOG_TAG "SampleDriver"
18
19 #include "SampleDriver.h"
20
21 #include "CpuExecutor.h"
22 #include "HalInterfaces.h"
23
24 #include <android-base/logging.h>
25 #include <hidl/LegacySupport.h>
26 #include <thread>
27
28 namespace android {
29 namespace nn {
30 namespace sample_driver {
31
prepareModel(const Model & model,const sp<IPreparedModelCallback> & callback)32 Return<ErrorStatus> SampleDriver::prepareModel(const Model& model,
33 const sp<IPreparedModelCallback>& callback) {
34 if (VLOG_IS_ON(DRIVER)) {
35 VLOG(DRIVER) << "prepareModel";
36 logModelToInfo(model);
37 }
38 if (callback.get() == nullptr) {
39 LOG(ERROR) << "invalid callback passed to prepareModel";
40 return ErrorStatus::INVALID_ARGUMENT;
41 }
42 if (!validateModel(model)) {
43 callback->notify(ErrorStatus::INVALID_ARGUMENT, nullptr);
44 return ErrorStatus::INVALID_ARGUMENT;
45 }
46
47 // TODO: make asynchronous later
48 sp<SamplePreparedModel> preparedModel = new SamplePreparedModel(model);
49 if (!preparedModel->initialize()) {
50 callback->notify(ErrorStatus::INVALID_ARGUMENT, nullptr);
51 return ErrorStatus::INVALID_ARGUMENT;
52 }
53 callback->notify(ErrorStatus::NONE, preparedModel);
54 return ErrorStatus::NONE;
55 }
56
getStatus()57 Return<DeviceStatus> SampleDriver::getStatus() {
58 VLOG(DRIVER) << "getStatus()";
59 return DeviceStatus::AVAILABLE;
60 }
61
run()62 int SampleDriver::run() {
63 android::hardware::configureRpcThreadpool(4, true);
64 if (registerAsService(mName) != android::OK) {
65 LOG(ERROR) << "Could not register service";
66 return 1;
67 }
68 android::hardware::joinRpcThreadpool();
69 LOG(ERROR) << "Service exited!";
70 return 1;
71 }
72
initialize()73 bool SamplePreparedModel::initialize() {
74 return setRunTimePoolInfosFromHidlMemories(&mPoolInfos, mModel.pools);
75 }
76
asyncExecute(const Request & request,const sp<IExecutionCallback> & callback)77 void SamplePreparedModel::asyncExecute(const Request& request,
78 const sp<IExecutionCallback>& callback) {
79 std::vector<RunTimePoolInfo> requestPoolInfos;
80 if (!setRunTimePoolInfosFromHidlMemories(&requestPoolInfos, request.pools)) {
81 callback->notify(ErrorStatus::GENERAL_FAILURE);
82 return;
83 }
84
85 CpuExecutor executor;
86 int n = executor.run(mModel, request, mPoolInfos, requestPoolInfos);
87 VLOG(DRIVER) << "executor.run returned " << n;
88 ErrorStatus executionStatus =
89 n == ANEURALNETWORKS_NO_ERROR ? ErrorStatus::NONE : ErrorStatus::GENERAL_FAILURE;
90 Return<void> returned = callback->notify(executionStatus);
91 if (!returned.isOk()) {
92 LOG(ERROR) << " hidl callback failed to return properly: " << returned.description();
93 }
94 }
95
execute(const Request & request,const sp<IExecutionCallback> & callback)96 Return<ErrorStatus> SamplePreparedModel::execute(const Request& request,
97 const sp<IExecutionCallback>& callback) {
98 VLOG(DRIVER) << "execute(" << toString(request) << ")";
99 if (callback.get() == nullptr) {
100 LOG(ERROR) << "invalid callback passed to execute";
101 return ErrorStatus::INVALID_ARGUMENT;
102 }
103 if (!validateRequest(request, mModel)) {
104 callback->notify(ErrorStatus::INVALID_ARGUMENT);
105 return ErrorStatus::INVALID_ARGUMENT;
106 }
107
108 // This thread is intentionally detached because the sample driver service
109 // is expected to live forever.
110 std::thread([this, request, callback]{ asyncExecute(request, callback); }).detach();
111
112 return ErrorStatus::NONE;
113 }
114
115 } // namespace sample_driver
116 } // namespace nn
117 } // namespace android
118