| /* |
| * 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 "perfmgr/NodeLooperThread.h" |
| |
| namespace android { |
| namespace perfmgr { |
| |
| bool NodeLooperThread::Request(const std::vector<NodeAction>& actions, |
| const std::string& hint_type) { |
| if (::android::Thread::exitPending()) { |
| LOG(WARNING) << "NodeLooperThread is exiting"; |
| return false; |
| } |
| if (!::android::Thread::isRunning()) { |
| LOG(FATAL) << "NodeLooperThread stopped, abort..."; |
| } |
| |
| bool ret = true; |
| ::android::AutoMutex _l(lock_); |
| for (const auto& a : actions) { |
| if (a.node_index >= nodes_.size()) { |
| LOG(ERROR) << "Node index out of bound: " << a.node_index |
| << " ,size: " << nodes_.size(); |
| ret = false; |
| } else { |
| // End time set to steady time point max |
| ReqTime end_time = ReqTime::max(); |
| // Timeout is non-zero |
| if (a.timeout_ms != std::chrono::milliseconds::zero()) { |
| auto now = std::chrono::steady_clock::now(); |
| // Overflow protection in case timeout_ms is too big to overflow |
| // time point which is unsigned integer |
| if (std::chrono::duration_cast<std::chrono::milliseconds>( |
| ReqTime::max() - now) > a.timeout_ms) { |
| end_time = now + a.timeout_ms; |
| } |
| } |
| ret = nodes_[a.node_index]->AddRequest(a.value_index, hint_type, |
| end_time) && |
| ret; |
| } |
| } |
| wake_cond_.signal(); |
| return ret; |
| } |
| |
| bool NodeLooperThread::Cancel(const std::vector<NodeAction>& actions, |
| const std::string& hint_type) { |
| if (::android::Thread::exitPending()) { |
| LOG(WARNING) << "NodeLooperThread is exiting"; |
| return false; |
| } |
| if (!::android::Thread::isRunning()) { |
| LOG(FATAL) << "NodeLooperThread stopped, abort..."; |
| } |
| |
| bool ret = true; |
| ::android::AutoMutex _l(lock_); |
| for (const auto& a : actions) { |
| if (a.node_index >= nodes_.size()) { |
| LOG(ERROR) << "Node index out of bound: " << a.node_index |
| << " ,size: " << nodes_.size(); |
| ret = false; |
| } else { |
| nodes_[a.node_index]->RemoveRequest(hint_type); |
| } |
| } |
| wake_cond_.signal(); |
| return ret; |
| } |
| |
| void NodeLooperThread::DumpToFd(int fd) { |
| ::android::AutoMutex _l(lock_); |
| for (auto& n : nodes_) { |
| n->DumpToFd(fd); |
| } |
| } |
| |
| bool NodeLooperThread::threadLoop() { |
| ::android::AutoMutex _l(lock_); |
| std::chrono::milliseconds timeout_ms = kMaxUpdatePeriod; |
| |
| // Update 2 passes: some node may have dependency in other node |
| // e.g. update cpufreq min to VAL while cpufreq max still set to |
| // a value lower than VAL, is expected to fail in first pass |
| for (auto& n : nodes_) { |
| n->Update(false); |
| } |
| for (auto& n : nodes_) { |
| timeout_ms = std::min(n->Update(), timeout_ms); |
| } |
| |
| nsecs_t sleep_timeout_ns = std::numeric_limits<nsecs_t>::max(); |
| if (timeout_ms.count() < sleep_timeout_ns / 1000 / 1000) { |
| sleep_timeout_ns = timeout_ms.count() * 1000 * 1000; |
| } |
| // VERBOSE level won't print by default in user/userdebug build |
| LOG(VERBOSE) << "NodeLooperThread will wait for " << sleep_timeout_ns |
| << "ns"; |
| wake_cond_.waitRelative(lock_, sleep_timeout_ns); |
| return true; |
| } |
| |
| void NodeLooperThread::onFirstRef() { |
| auto ret = this->run("NodeLooperThread", PRIORITY_HIGHEST); |
| if (ret != NO_ERROR) { |
| LOG(ERROR) << "NodeLooperThread start fail"; |
| } else { |
| LOG(INFO) << "NodeLooperThread started"; |
| } |
| } |
| |
| void NodeLooperThread::Stop() { |
| if (::android::Thread::isRunning()) { |
| LOG(INFO) << "NodeLooperThread stopping"; |
| { |
| ::android::AutoMutex _l(lock_); |
| wake_cond_.signal(); |
| ::android::Thread::requestExit(); |
| } |
| ::android::Thread::join(); |
| LOG(INFO) << "NodeLooperThread stopped"; |
| } |
| } |
| |
| } // namespace perfmgr |
| } // namespace android |