Steven Moreland | ff189a0 | 2017-09-15 16:22:48 -0700 | [diff] [blame] | 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 | #include <hidladapter/HidlBinderAdapter.h> |
| 18 | |
Steven Moreland | 3269d85 | 2018-01-03 11:13:17 -0800 | [diff] [blame^] | 19 | #include <android-base/logging.h> |
| 20 | #include <android-base/properties.h> |
Steven Moreland | ff189a0 | 2017-09-15 16:22:48 -0700 | [diff] [blame] | 21 | #include <android/hidl/base/1.0/IBase.h> |
| 22 | #include <android/hidl/manager/1.0/IServiceManager.h> |
| 23 | #include <hidl/HidlTransportSupport.h> |
| 24 | |
Steven Moreland | 3269d85 | 2018-01-03 11:13:17 -0800 | [diff] [blame^] | 25 | #include <unistd.h> |
Steven Moreland | ff189a0 | 2017-09-15 16:22:48 -0700 | [diff] [blame] | 26 | #include <iostream> |
| 27 | #include <map> |
| 28 | #include <string> |
| 29 | |
| 30 | namespace android { |
| 31 | namespace hardware { |
| 32 | namespace details { |
| 33 | |
Steven Moreland | 3269d85 | 2018-01-03 11:13:17 -0800 | [diff] [blame^] | 34 | using android::base::SetProperty; |
| 35 | using android::base::WaitForProperty; |
| 36 | |
| 37 | const static std::string kDeactivateProp = "test.hidl.adapters.deactivated"; |
| 38 | |
| 39 | void usage(const std::string& me) { |
| 40 | std::cerr << "usage: " << me << " [-p] interface-name instance-name number-of-threads." |
| 41 | << std::endl; |
| 42 | std::cerr << " -p: stop based on property " << kDeactivateProp << "and reset it." |
| 43 | << std::endl; |
| 44 | } |
| 45 | |
| 46 | bool processArguments(int* argc, char*** argv, bool* propertyStop) { |
| 47 | int c; |
| 48 | while ((c = getopt(*argc, *argv, "p")) != -1) { |
| 49 | switch (c) { |
| 50 | case 'p': { |
| 51 | *propertyStop = true; |
| 52 | break; |
| 53 | } |
| 54 | default: { return false; } |
| 55 | } |
| 56 | } |
| 57 | |
| 58 | *argc -= optind; |
| 59 | *argv += optind; |
| 60 | return true; |
| 61 | } |
| 62 | |
| 63 | // only applies for -p argument |
| 64 | void waitForAdaptersDeactivated() { |
| 65 | using std::literals::chrono_literals::operator""s; |
| 66 | |
| 67 | while (!WaitForProperty(kDeactivateProp, "true", 30s)) { |
| 68 | // Log this so that when using this option on testing devices, there is |
| 69 | // a clear indication if adapters are not properly stopped |
| 70 | LOG(WARNING) << "Adapter use in progress. Waiting for stop based on 'true' " |
| 71 | << kDeactivateProp; |
| 72 | } |
| 73 | |
| 74 | SetProperty(kDeactivateProp, "false"); |
| 75 | } |
| 76 | |
Steven Moreland | ff189a0 | 2017-09-15 16:22:48 -0700 | [diff] [blame] | 77 | int adapterMain(const std::string& package, int argc, char** argv, |
| 78 | const AdaptersFactory& adapters) { |
| 79 | using android::hardware::configureRpcThreadpool; |
| 80 | using android::hidl::base::V1_0::IBase; |
| 81 | using android::hidl::manager::V1_0::IServiceManager; |
| 82 | |
Steven Moreland | 3269d85 | 2018-01-03 11:13:17 -0800 | [diff] [blame^] | 83 | const std::string& me = argc > 0 ? argv[0] : "(error)"; |
| 84 | |
| 85 | bool propertyStop = false; |
| 86 | if (!processArguments(&argc, &argv, &propertyStop)) { |
| 87 | usage(me); |
| 88 | return EINVAL; |
Steven Moreland | ff189a0 | 2017-09-15 16:22:48 -0700 | [diff] [blame] | 89 | } |
| 90 | |
Steven Moreland | 3269d85 | 2018-01-03 11:13:17 -0800 | [diff] [blame^] | 91 | if (argc != 3) { |
| 92 | usage(me); |
| 93 | return EINVAL; |
| 94 | } |
| 95 | |
| 96 | std::string interfaceName = package + "::" + argv[0]; |
| 97 | std::string instanceName = argv[1]; |
| 98 | int threadNumber = std::stoi(argv[2]); |
Steven Moreland | ff189a0 | 2017-09-15 16:22:48 -0700 | [diff] [blame] | 99 | |
| 100 | if (threadNumber <= 0) { |
| 101 | std::cerr << "ERROR: invalid thread number " << threadNumber |
| 102 | << " must be a positive integer."; |
| 103 | } |
| 104 | |
| 105 | auto it = adapters.find(interfaceName); |
| 106 | if (it == adapters.end()) { |
| 107 | std::cerr << "ERROR: could not resolve " << interfaceName << "." << std::endl; |
| 108 | return 1; |
| 109 | } |
| 110 | |
| 111 | std::cout << "Trying to adapt down " << interfaceName << "/" << instanceName << std::endl; |
| 112 | |
| 113 | configureRpcThreadpool(threadNumber, false /* callerWillJoin */); |
| 114 | |
| 115 | sp<IServiceManager> manager = IServiceManager::getService(); |
| 116 | if (manager == nullptr) { |
| 117 | std::cerr << "ERROR: could not retrieve service manager." << std::endl; |
| 118 | return 1; |
| 119 | } |
| 120 | |
| 121 | sp<IBase> implementation = manager->get(interfaceName, instanceName).withDefault(nullptr); |
| 122 | if (implementation == nullptr) { |
| 123 | std::cerr << "ERROR: could not retrieve desired implementation" << std::endl; |
| 124 | return 1; |
| 125 | } |
| 126 | |
| 127 | sp<IBase> adapter = it->second(implementation); |
| 128 | if (adapter == nullptr) { |
| 129 | std::cerr << "ERROR: could not create adapter." << std::endl; |
| 130 | return 1; |
| 131 | } |
| 132 | |
| 133 | bool replaced = manager->add(instanceName, adapter).withDefault(false); |
| 134 | if (!replaced) { |
| 135 | std::cerr << "ERROR: could not register the service with the service manager." << std::endl; |
| 136 | return 1; |
| 137 | } |
| 138 | |
Steven Moreland | 3269d85 | 2018-01-03 11:13:17 -0800 | [diff] [blame^] | 139 | if (propertyStop) { |
| 140 | std::cout << "Set " << kDeactivateProp << " to true to deactivate." << std::endl; |
| 141 | waitForAdaptersDeactivated(); |
| 142 | } else { |
| 143 | std::cout << "Press any key to disassociate adapter." << std::endl; |
| 144 | getchar(); |
| 145 | } |
Steven Moreland | ff189a0 | 2017-09-15 16:22:48 -0700 | [diff] [blame] | 146 | |
| 147 | bool restored = manager->add(instanceName, implementation).withDefault(false); |
| 148 | if (!restored) { |
| 149 | std::cerr << "ERROR: could not re-register interface with the service manager." |
| 150 | << std::endl; |
| 151 | return 1; |
| 152 | } |
| 153 | |
| 154 | std::cout << "Success." << std::endl; |
| 155 | |
| 156 | return 0; |
| 157 | } |
| 158 | |
| 159 | // If an interface is adapted to 1.0, it can then not be adapted to 1.1 in the same process. |
| 160 | // This poses a problem in the following scenario: |
| 161 | // auto interface = new V1_1::implementation::IFoo; |
| 162 | // hidlObject1_0->foo(interface) // adaptation set at 1.0 |
| 163 | // hidlObject1_1->bar(interface) // adaptation still is 1.0 |
| 164 | // This could be solved by keeping a map of IBase,fqName -> IBase, but then you end up |
| 165 | // with multiple names for the same interface. |
| 166 | sp<IBase> adaptWithDefault(const sp<IBase>& something, |
| 167 | const std::function<sp<IBase>()>& makeDefault) { |
| 168 | static std::map<sp<IBase>, sp<IBase>> sAdapterMap; |
| 169 | |
Steven Moreland | bc4ece3 | 2017-09-26 16:56:51 -0700 | [diff] [blame] | 170 | if (something == nullptr) { |
| 171 | return something; |
| 172 | } |
| 173 | |
Steven Moreland | ff189a0 | 2017-09-15 16:22:48 -0700 | [diff] [blame] | 174 | auto it = sAdapterMap.find(something); |
| 175 | if (it == sAdapterMap.end()) { |
| 176 | it = sAdapterMap.insert(it, {something, makeDefault()}); |
| 177 | } |
| 178 | |
| 179 | return it->second; |
| 180 | } |
| 181 | |
| 182 | } // namespace details |
| 183 | } // namespace hardware |
| 184 | } // namespace android |