| /* |
| * Copyright 2019 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 <android-base/logging.h> |
| #include <android/binder_manager.h> |
| #include <binder/IPCThreadState.h> |
| #include <binder/IServiceManager.h> |
| #include <binder/ProcessState.h> |
| #include <cutils/native_handle.h> |
| #include <hidl/HidlTransportSupport.h> |
| #include <hwbinder/ProcessState.h> |
| |
| #include <fcntl.h> |
| #include <sys/socket.h> |
| #include <sys/stat.h> |
| #include <sys/types.h> |
| #include <unistd.h> |
| |
| #include <SuspendProperties.sysprop.h> |
| |
| #include "SuspendControlService.h" |
| #include "SystemSuspend.h" |
| #include "SystemSuspendAidl.h" |
| #include "SystemSuspendHidl.h" |
| |
| using aidl::android::system::suspend::SystemSuspendAidl; |
| using android::sp; |
| using android::status_t; |
| using android::String16; |
| using android::base::Socketpair; |
| using android::base::unique_fd; |
| using android::hardware::configureRpcThreadpool; |
| using android::hardware::joinRpcThreadpool; |
| using android::system::suspend::V1_0::ISystemSuspend; |
| using android::system::suspend::V1_0::SleepTimeConfig; |
| using android::system::suspend::V1_0::SuspendControlService; |
| using android::system::suspend::V1_0::SuspendControlServiceInternal; |
| using android::system::suspend::V1_0::SystemSuspend; |
| using android::system::suspend::V1_0::SystemSuspendHidl; |
| using namespace std::chrono_literals; |
| using namespace ::android::sysprop; |
| |
| static constexpr size_t kStatsCapacity = 1000; |
| static constexpr char kSysClassWakeup[] = "/sys/class/wakeup"; |
| static constexpr char kSysPowerSuspendStats[] = "/sys/power/suspend_stats"; |
| static constexpr char kSysPowerWakeupCount[] = "/sys/power/wakeup_count"; |
| static constexpr char kSysPowerState[] = "/sys/power/state"; |
| // TODO(b/120445600): Use upstream mechanism for wakeup reasons once available |
| static constexpr char kSysKernelWakeupReasons[] = "/sys/kernel/wakeup_reasons/last_resume_reason"; |
| static constexpr char kSysKernelSuspendTime[] = "/sys/kernel/wakeup_reasons/last_suspend_time"; |
| |
| static constexpr uint32_t kDefaultMaxSleepTimeMillis = 60000; |
| static constexpr uint32_t kDefaultBaseSleepTimeMillis = 100; |
| static constexpr double kDefaultSleepTimeScaleFactor = 2.0; |
| static constexpr uint32_t kDefaultBackoffThresholdCount = 0; |
| static constexpr uint32_t kDefaultShortSuspendThresholdMillis = 0; |
| static constexpr bool kDefaultFailedSuspendBackoffEnabled = true; |
| static constexpr bool kDefaultShortSuspendBackoffEnabled = false; |
| |
| int main() { |
| unique_fd wakeupCountFd{TEMP_FAILURE_RETRY(open(kSysPowerWakeupCount, O_CLOEXEC | O_RDWR))}; |
| if (wakeupCountFd < 0) { |
| PLOG(ERROR) << "error opening " << kSysPowerWakeupCount; |
| } |
| unique_fd stateFd{TEMP_FAILURE_RETRY(open(kSysPowerState, O_CLOEXEC | O_RDWR))}; |
| if (stateFd < 0) { |
| PLOG(ERROR) << "error opening " << kSysPowerState; |
| } |
| unique_fd kernelWakelockStatsFd{ |
| TEMP_FAILURE_RETRY(open(kSysClassWakeup, O_DIRECTORY | O_CLOEXEC | O_RDONLY))}; |
| if (kernelWakelockStatsFd < 0) { |
| PLOG(ERROR) << "SystemSuspend: Error opening " << kSysClassWakeup; |
| } |
| unique_fd suspendStatsFd{ |
| TEMP_FAILURE_RETRY(open(kSysPowerSuspendStats, O_DIRECTORY | O_CLOEXEC | O_RDONLY))}; |
| if (suspendStatsFd < 0) { |
| PLOG(ERROR) << "SystemSuspend: Error opening " << kSysPowerSuspendStats; |
| } |
| unique_fd wakeupReasonsFd{ |
| TEMP_FAILURE_RETRY(open(kSysKernelWakeupReasons, O_CLOEXEC | O_RDONLY))}; |
| if (wakeupReasonsFd < 0) { |
| PLOG(ERROR) << "SystemSuspend: Error opening " << kSysKernelWakeupReasons; |
| } |
| unique_fd suspendTimeFd{TEMP_FAILURE_RETRY(open(kSysKernelSuspendTime, O_CLOEXEC | O_RDONLY))}; |
| if (suspendTimeFd < 0) { |
| PLOG(ERROR) << "SystemSuspend: Error opening " << kSysKernelSuspendTime; |
| } |
| |
| // If either /sys/power/wakeup_count or /sys/power/state fail to open, we construct |
| // SystemSuspend with blocking fds. This way this process will keep running, handle wake lock |
| // requests, collect stats, but won't suspend the device. We want this behavior on devices |
| // (hosts) where system suspend should not be handles by Android platform e.g. ARC++, Android |
| // virtual devices. |
| if (wakeupCountFd < 0 || stateFd < 0) { |
| // This will block all reads/writes to these fds from the suspend thread. |
| Socketpair(SOCK_STREAM, &wakeupCountFd, &stateFd); |
| } |
| |
| SleepTimeConfig sleepTimeConfig = { |
| .baseSleepTime = std::chrono::milliseconds( |
| SuspendProperties::base_sleep_time_millis().value_or(kDefaultBaseSleepTimeMillis)), |
| .maxSleepTime = std::chrono::milliseconds( |
| SuspendProperties::max_sleep_time_millis().value_or(kDefaultMaxSleepTimeMillis)), |
| .sleepTimeScaleFactor = |
| SuspendProperties::sleep_time_scale_factor().value_or(kDefaultSleepTimeScaleFactor), |
| .backoffThreshold = |
| SuspendProperties::backoff_threshold_count().value_or(kDefaultBackoffThresholdCount), |
| .shortSuspendThreshold = |
| std::chrono::milliseconds(SuspendProperties::short_suspend_threshold_millis().value_or( |
| kDefaultShortSuspendThresholdMillis)), |
| .failedSuspendBackoffEnabled = SuspendProperties::failed_suspend_backoff_enabled().value_or( |
| kDefaultFailedSuspendBackoffEnabled), |
| .shortSuspendBackoffEnabled = SuspendProperties::short_suspend_backoff_enabled().value_or( |
| kDefaultShortSuspendBackoffEnabled), |
| }; |
| |
| configureRpcThreadpool(1, true /* callerWillJoin */); |
| |
| sp<SuspendControlService> suspendControl = new SuspendControlService(); |
| auto controlStatus = |
| android::defaultServiceManager()->addService(String16("suspend_control"), suspendControl); |
| if (controlStatus != android::OK) { |
| LOG(FATAL) << "Unable to register suspend_control service: " << controlStatus; |
| } |
| |
| sp<SuspendControlServiceInternal> suspendControlInternal = new SuspendControlServiceInternal(); |
| controlStatus = android::defaultServiceManager()->addService( |
| String16("suspend_control_internal"), suspendControlInternal); |
| if (controlStatus != android::OK) { |
| LOG(FATAL) << "Unable to register suspend_control_internal service: " << controlStatus; |
| } |
| |
| // Create non-HW binder threadpool for SuspendControlService. |
| sp<android::ProcessState> ps{android::ProcessState::self()}; |
| ps->startThreadPool(); |
| |
| sp<SystemSuspend> suspend = new SystemSuspend( |
| std::move(wakeupCountFd), std::move(stateFd), std::move(suspendStatsFd), kStatsCapacity, |
| std::move(kernelWakelockStatsFd), std::move(wakeupReasonsFd), std::move(suspendTimeFd), |
| sleepTimeConfig, suspendControl, suspendControlInternal, true /* mUseSuspendCounter*/); |
| |
| std::shared_ptr<SystemSuspendAidl> suspendAidl = |
| ndk::SharedRefBase::make<SystemSuspendAidl>(suspend.get()); |
| const std::string suspendAidlInstance = |
| std::string() + SystemSuspendAidl::descriptor + "/default"; |
| auto aidlStatus = |
| AServiceManager_addService(suspendAidl->asBinder().get(), suspendAidlInstance.c_str()); |
| CHECK_EQ(aidlStatus, STATUS_OK) |
| << "Unable to register system-suspend AIDL service: " << aidlStatus; |
| |
| sp<SystemSuspendHidl> suspendHidl = new SystemSuspendHidl(suspend.get()); |
| status_t hidlStatus = suspendHidl->registerAsService(); |
| if (android::OK != hidlStatus) { |
| LOG(INFO) << "system-suspend HIDL hal not supported, use the AIDL suspend hal for " |
| "requesting wakelocks"; |
| } |
| |
| joinRpcThreadpool(); |
| std::abort(); /* unreachable */ |
| } |