| /* |
| * 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 "chre/core/host_notifications.h" |
| |
| #include "chre/core/event_loop_manager.h" |
| #include "chre/util/dynamic_vector.h" |
| #include "chre/util/nested_data_ptr.h" |
| |
| namespace chre { |
| |
| namespace { |
| |
| //! Connected host endpoint metadata, which should only be accessed by the main |
| //! CHRE event loop. |
| // TODO(b/194287786): Re-organize this code into a class for better |
| // organization. |
| chre::DynamicVector<struct chreHostEndpointInfo> gHostEndpoints; |
| |
| bool isHostEndpointConnected(uint16_t hostEndpointId, size_t *index) { |
| for (size_t i = 0; i < gHostEndpoints.size(); i++) { |
| if (gHostEndpoints[i].hostEndpointId == hostEndpointId) { |
| *index = i; |
| return true; |
| } |
| } |
| |
| return false; |
| } |
| |
| void hostNotificationCallback(uint16_t type, void *data, void *extraData) { |
| uint16_t hostEndpointId = NestedDataPtr<uint16_t>(data); |
| |
| SystemCallbackType callbackType = static_cast<SystemCallbackType>(type); |
| if (callbackType == SystemCallbackType::HostEndpointDisconnected) { |
| size_t index; |
| if (isHostEndpointConnected(hostEndpointId, &index)) { |
| gHostEndpoints.erase(index); |
| |
| uint16_t eventType = CHRE_EVENT_HOST_ENDPOINT_NOTIFICATION; |
| auto *eventData = memoryAlloc<struct chreHostEndpointNotification>(); |
| |
| if (eventData == nullptr) { |
| LOG_OOM(); |
| } else { |
| eventData->hostEndpointId = hostEndpointId; |
| eventData->notificationType = |
| HOST_ENDPOINT_NOTIFICATION_TYPE_DISCONNECT; |
| eventData->reserved = 0; |
| |
| EventLoopManagerSingleton::get()->getEventLoop().postEventOrDie( |
| eventType, eventData, freeEventDataCallback, kBroadcastInstanceId); |
| } |
| } else { |
| LOGW("Got disconnected event for nonexistent host endpoint ID %" PRIu16, |
| hostEndpointId); |
| } |
| } else { |
| auto *info = static_cast<struct chreHostEndpointInfo *>(extraData); |
| |
| size_t index; |
| if (!isHostEndpointConnected(hostEndpointId, &index)) { |
| gHostEndpoints.push_back(*info); |
| } else { |
| LOGW("Got connected event for already existing host endpoint ID %" PRIu16, |
| hostEndpointId); |
| } |
| } |
| |
| memoryFree(extraData); |
| } |
| |
| } // anonymous namespace |
| |
| bool getHostEndpointInfo(uint16_t hostEndpointId, |
| struct chreHostEndpointInfo *info) { |
| size_t index; |
| if (isHostEndpointConnected(hostEndpointId, &index)) { |
| *info = gHostEndpoints[index]; |
| return true; |
| } else { |
| return false; |
| } |
| } |
| |
| void postHostEndpointConnected(const struct chreHostEndpointInfo &info) { |
| auto *infoData = memoryAlloc<struct chreHostEndpointInfo>(); |
| if (infoData == nullptr) { |
| LOG_OOM(); |
| } else { |
| memcpy(infoData, &info, sizeof(struct chreHostEndpointInfo)); |
| |
| EventLoopManagerSingleton::get()->deferCallback( |
| SystemCallbackType::HostEndpointConnected, |
| NestedDataPtr<uint16_t>(info.hostEndpointId), hostNotificationCallback, |
| infoData /* extraData */); |
| } |
| } |
| |
| void postHostEndpointDisconnected(uint16_t hostEndpointId) { |
| EventLoopManagerSingleton::get()->deferCallback( |
| SystemCallbackType::HostEndpointDisconnected, |
| NestedDataPtr<uint16_t>(hostEndpointId), hostNotificationCallback, |
| nullptr); |
| } |
| |
| } // namespace chre |