| /* |
| * Copyright (C) 2017 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 specic language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #define LOG_TAG "libperfmgr" |
| |
| #include <android-base/file.h> |
| #include <android-base/logging.h> |
| #include <android-base/properties.h> |
| #include <android-base/stringprintf.h> |
| #include <android-base/strings.h> |
| |
| #include "perfmgr/PropertyNode.h" |
| |
| namespace android { |
| namespace perfmgr { |
| |
| PropertyNode::PropertyNode(std::string name, std::string node_path, |
| std::vector<RequestGroup> req_sorted, |
| std::size_t default_val_index, bool reset_on_init) |
| : Node(std::move(name), std::move(node_path), std::move(req_sorted), |
| default_val_index, reset_on_init) { |
| if (reset_on_init) { |
| Update(false); |
| } |
| } |
| |
| std::chrono::milliseconds PropertyNode::Update(bool) { |
| std::size_t value_index = default_val_index_; |
| std::chrono::milliseconds expire_time = std::chrono::milliseconds::max(); |
| |
| // Find the highest outstanding request's expire time |
| for (std::size_t i = 0; i < req_sorted_.size(); i++) { |
| if (req_sorted_[i].GetExpireTime(&expire_time)) { |
| value_index = i; |
| break; |
| } |
| } |
| |
| // Update node only if request index changes |
| if (value_index != current_val_index_) { |
| const std::string& req_value = |
| req_sorted_[value_index].GetRequestValue(); |
| |
| if (!android::base::SetProperty(node_path_, req_value)) { |
| LOG(WARNING) << "Failed to set property to : " << node_path_ |
| << " with value: " << req_value; |
| } else { |
| // Update current index only when succeed |
| current_val_index_ = value_index; |
| } |
| } |
| return expire_time; |
| } |
| |
| void PropertyNode::DumpToFd(int fd) const { |
| std::string node_value = android::base::GetProperty(node_path_, ""); |
| std::string buf(android::base::StringPrintf( |
| "%s\t%s\t%zu\t%s\n", name_.c_str(), node_path_.c_str(), |
| current_val_index_, node_value.c_str())); |
| if (!android::base::WriteStringToFd(buf, fd)) { |
| LOG(ERROR) << "Failed to dump fd: " << fd; |
| } |
| } |
| |
| } // namespace perfmgr |
| } // namespace android |