/*
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* Copyright (C) 2010 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#define LOG_TAG "PowerManagerService-JNI"
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//#define LOG_NDEBUG 0
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#include <android/hardware/power/1.1/IPower.h>
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#include <android/system/suspend/1.0/ISystemSuspend.h>
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#include <android/system/suspend/ISuspendControlService.h>
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#include <nativehelper/JNIHelp.h>
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#include "jni.h"
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#include <nativehelper/ScopedUtfChars.h>
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#include <limits.h>
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#include <android-base/chrono_utils.h>
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#include <android_runtime/AndroidRuntime.h>
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#include <android_runtime/Log.h>
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#include <binder/IServiceManager.h>
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#include <gui/SurfaceComposerClient.h>
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#include <hardware/power.h>
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#include <hardware_legacy/power.h>
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#include <hidl/ServiceManagement.h>
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#include <utils/Timers.h>
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#include <utils/misc.h>
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#include <utils/String8.h>
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#include <utils/Log.h>
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#include "com_android_server_power_PowerManagerService.h"
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using android::hardware::Return;
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using android::hardware::Void;
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using android::hardware::power::V1_0::PowerHint;
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using android::hardware::power::V1_0::Feature;
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using android::String8;
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using android::system::suspend::V1_0::ISystemSuspend;
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using android::system::suspend::V1_0::IWakeLock;
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using android::system::suspend::V1_0::WakeLockType;
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using android::system::suspend::ISuspendControlService;
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using IPowerV1_1 = android::hardware::power::V1_1::IPower;
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using IPowerV1_0 = android::hardware::power::V1_0::IPower;
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namespace android {
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// ----------------------------------------------------------------------------
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static struct {
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jmethodID userActivityFromNative;
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} gPowerManagerServiceClassInfo;
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// ----------------------------------------------------------------------------
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static jobject gPowerManagerServiceObj;
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// Use getPowerHal* to retrieve a copy
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static sp<IPowerV1_0> gPowerHalV1_0_ = nullptr;
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static sp<IPowerV1_1> gPowerHalV1_1_ = nullptr;
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static bool gPowerHalExists = true;
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static std::mutex gPowerHalMutex;
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static nsecs_t gLastEventTime[USER_ACTIVITY_EVENT_LAST + 1];
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// Throttling interval for user activity calls.
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static const nsecs_t MIN_TIME_BETWEEN_USERACTIVITIES = 100 * 1000000L; // 100ms
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// ----------------------------------------------------------------------------
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static bool checkAndClearExceptionFromCallback(JNIEnv* env, const char* methodName) {
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if (env->ExceptionCheck()) {
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ALOGE("An exception was thrown by callback '%s'.", methodName);
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LOGE_EX(env);
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env->ExceptionClear();
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return true;
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}
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return false;
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}
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// Check validity of current handle to the power HAL service, and call getService() if necessary.
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// The caller must be holding gPowerHalMutex.
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static void connectPowerHalLocked() {
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if (gPowerHalExists && gPowerHalV1_0_ == nullptr) {
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gPowerHalV1_0_ = IPowerV1_0::getService();
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if (gPowerHalV1_0_ != nullptr) {
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ALOGI("Loaded power HAL 1.0 service");
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// Try cast to powerHAL V1_1
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gPowerHalV1_1_ = IPowerV1_1::castFrom(gPowerHalV1_0_);
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if (gPowerHalV1_1_ == nullptr) {
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} else {
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ALOGI("Loaded power HAL 1.1 service");
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}
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} else {
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ALOGI("Couldn't load power HAL service");
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gPowerHalExists = false;
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}
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}
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}
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// Retrieve a copy of PowerHAL V1_0
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sp<IPowerV1_0> getPowerHalV1_0() {
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std::lock_guard<std::mutex> lock(gPowerHalMutex);
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connectPowerHalLocked();
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return gPowerHalV1_0_;
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}
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// Retrieve a copy of PowerHAL V1_1
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sp<IPowerV1_1> getPowerHalV1_1() {
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std::lock_guard<std::mutex> lock(gPowerHalMutex);
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connectPowerHalLocked();
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return gPowerHalV1_1_;
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}
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// Check if a call to a power HAL function failed; if so, log the failure and invalidate the
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// current handle to the power HAL service.
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bool processPowerHalReturn(const Return<void> &ret, const char* functionName) {
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if (!ret.isOk()) {
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ALOGE("%s() failed: power HAL service not available.", functionName);
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gPowerHalMutex.lock();
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gPowerHalV1_0_ = nullptr;
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gPowerHalV1_1_ = nullptr;
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gPowerHalMutex.unlock();
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}
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return ret.isOk();
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}
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static void sendPowerHint(PowerHint hintId, uint32_t data) {
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sp<IPowerV1_1> powerHalV1_1 = getPowerHalV1_1();
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Return<void> ret;
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if (powerHalV1_1 != nullptr) {
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ret = powerHalV1_1->powerHintAsync(hintId, data);
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processPowerHalReturn(ret, "powerHintAsync");
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} else {
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sp<IPowerV1_0> powerHalV1_0 = getPowerHalV1_0();
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if (powerHalV1_0 != nullptr) {
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ret = powerHalV1_0->powerHint(hintId, data);
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processPowerHalReturn(ret, "powerHint");
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}
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}
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SurfaceComposerClient::notifyPowerHint(static_cast<int32_t>(hintId));
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}
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void android_server_PowerManagerService_userActivity(nsecs_t eventTime, int32_t eventType) {
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if (gPowerManagerServiceObj) {
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// Throttle calls into user activity by event type.
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// We're a little conservative about argument checking here in case the caller
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// passes in bad data which could corrupt system state.
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if (eventType >= 0 && eventType <= USER_ACTIVITY_EVENT_LAST) {
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nsecs_t now = systemTime(SYSTEM_TIME_MONOTONIC);
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if (eventTime > now) {
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eventTime = now;
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}
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if (gLastEventTime[eventType] + MIN_TIME_BETWEEN_USERACTIVITIES > eventTime) {
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return;
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}
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gLastEventTime[eventType] = eventTime;
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// Tell the power HAL when user activity occurs.
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sendPowerHint(PowerHint::INTERACTION, 0);
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}
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JNIEnv* env = AndroidRuntime::getJNIEnv();
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env->CallVoidMethod(gPowerManagerServiceObj,
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gPowerManagerServiceClassInfo.userActivityFromNative,
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nanoseconds_to_milliseconds(eventTime), eventType, 0);
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checkAndClearExceptionFromCallback(env, "userActivityFromNative");
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}
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}
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static sp<ISystemSuspend> gSuspendHal = nullptr;
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static sp<ISuspendControlService> gSuspendControl = nullptr;
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static sp<IWakeLock> gSuspendBlocker = nullptr;
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static std::mutex gSuspendMutex;
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// Assume SystemSuspend HAL is always alive.
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// TODO: Force device to restart if SystemSuspend HAL dies.
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sp<ISystemSuspend> getSuspendHal() {
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static std::once_flag suspendHalFlag;
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std::call_once(suspendHalFlag, [](){
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::android::hardware::details::waitForHwService(ISystemSuspend::descriptor, "default");
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gSuspendHal = ISystemSuspend::getService();
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assert(gSuspendHal != nullptr);
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});
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return gSuspendHal;
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}
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sp<ISuspendControlService> getSuspendControl() {
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static std::once_flag suspendControlFlag;
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std::call_once(suspendControlFlag, [](){
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while(gSuspendControl == nullptr) {
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sp<IBinder> control =
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defaultServiceManager()->getService(String16("suspend_control"));
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if (control != nullptr) {
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gSuspendControl = interface_cast<ISuspendControlService>(control);
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}
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}
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});
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return gSuspendControl;
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}
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void enableAutoSuspend() {
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static bool enabled = false;
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if (!enabled) {
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sp<ISuspendControlService> suspendControl = getSuspendControl();
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suspendControl->enableAutosuspend(&enabled);
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}
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{
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std::lock_guard<std::mutex> lock(gSuspendMutex);
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if (gSuspendBlocker) {
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gSuspendBlocker->release();
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gSuspendBlocker.clear();
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}
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}
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}
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void disableAutoSuspend() {
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std::lock_guard<std::mutex> lock(gSuspendMutex);
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if (!gSuspendBlocker) {
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sp<ISystemSuspend> suspendHal = getSuspendHal();
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gSuspendBlocker = suspendHal->acquireWakeLock(WakeLockType::PARTIAL,
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"PowerManager.SuspendLockout");
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}
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}
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// ----------------------------------------------------------------------------
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static void nativeInit(JNIEnv* env, jobject obj) {
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gPowerManagerServiceObj = env->NewGlobalRef(obj);
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gPowerHalMutex.lock();
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connectPowerHalLocked();
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gPowerHalMutex.unlock();
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}
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static void nativeAcquireSuspendBlocker(JNIEnv *env, jclass /* clazz */, jstring nameStr) {
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ScopedUtfChars name(env, nameStr);
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acquire_wake_lock(PARTIAL_WAKE_LOCK, name.c_str());
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}
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static void nativeReleaseSuspendBlocker(JNIEnv *env, jclass /* clazz */, jstring nameStr) {
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ScopedUtfChars name(env, nameStr);
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release_wake_lock(name.c_str());
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}
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static void nativeSetInteractive(JNIEnv* /* env */, jclass /* clazz */, jboolean enable) {
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sp<IPowerV1_0> powerHalV1_0 = getPowerHalV1_0();
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if (powerHalV1_0 != nullptr) {
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android::base::Timer t;
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Return<void> ret = powerHalV1_0->setInteractive(enable);
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processPowerHalReturn(ret, "setInteractive");
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if (t.duration() > 20ms) {
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ALOGD("Excessive delay in setInteractive(%s) while turning screen %s",
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enable ? "true" : "false", enable ? "on" : "off");
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}
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}
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}
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static void nativeSetAutoSuspend(JNIEnv* /* env */, jclass /* clazz */, jboolean enable) {
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if (enable) {
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android::base::Timer t;
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enableAutoSuspend();
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if (t.duration() > 100ms) {
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ALOGD("Excessive delay in autosuspend_enable() while turning screen off");
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}
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} else {
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android::base::Timer t;
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disableAutoSuspend();
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if (t.duration() > 100ms) {
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ALOGD("Excessive delay in autosuspend_disable() while turning screen on");
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}
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}
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}
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static void nativeSendPowerHint(JNIEnv* /* env */, jclass /* clazz */, jint hintId, jint data) {
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sendPowerHint(static_cast<PowerHint>(hintId), data);
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}
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static void nativeSetFeature(JNIEnv* /* env */, jclass /* clazz */, jint featureId, jint data) {
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sp<IPowerV1_0> powerHalV1_0 = getPowerHalV1_0();
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if (powerHalV1_0 != nullptr) {
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Return<void> ret = powerHalV1_0->setFeature((Feature)featureId, static_cast<bool>(data));
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processPowerHalReturn(ret, "setFeature");
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}
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}
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static bool nativeForceSuspend(JNIEnv* /* env */, jclass /* clazz */) {
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bool retval = false;
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getSuspendControl()->forceSuspend(&retval);
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return retval;
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}
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// ----------------------------------------------------------------------------
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static const JNINativeMethod gPowerManagerServiceMethods[] = {
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/* name, signature, funcPtr */
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{ "nativeInit", "()V",
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(void*) nativeInit },
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{ "nativeAcquireSuspendBlocker", "(Ljava/lang/String;)V",
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(void*) nativeAcquireSuspendBlocker },
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{ "nativeForceSuspend", "()Z",
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(void*) nativeForceSuspend },
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{ "nativeReleaseSuspendBlocker", "(Ljava/lang/String;)V",
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(void*) nativeReleaseSuspendBlocker },
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{ "nativeSetInteractive", "(Z)V",
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(void*) nativeSetInteractive },
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{ "nativeSetAutoSuspend", "(Z)V",
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(void*) nativeSetAutoSuspend },
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{ "nativeSendPowerHint", "(II)V",
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(void*) nativeSendPowerHint },
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{ "nativeSetFeature", "(II)V",
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(void*) nativeSetFeature },
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};
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#define FIND_CLASS(var, className) \
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var = env->FindClass(className); \
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LOG_FATAL_IF(! (var), "Unable to find class " className);
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#define GET_METHOD_ID(var, clazz, methodName, methodDescriptor) \
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var = env->GetMethodID(clazz, methodName, methodDescriptor); \
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LOG_FATAL_IF(! (var), "Unable to find method " methodName);
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#define GET_FIELD_ID(var, clazz, fieldName, fieldDescriptor) \
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var = env->GetFieldID(clazz, fieldName, fieldDescriptor); \
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LOG_FATAL_IF(! (var), "Unable to find field " fieldName);
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int register_android_server_PowerManagerService(JNIEnv* env) {
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int res = jniRegisterNativeMethods(env, "com/android/server/power/PowerManagerService",
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gPowerManagerServiceMethods, NELEM(gPowerManagerServiceMethods));
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(void) res; // Faked use when LOG_NDEBUG.
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LOG_FATAL_IF(res < 0, "Unable to register native methods.");
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// Callbacks
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jclass clazz;
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FIND_CLASS(clazz, "com/android/server/power/PowerManagerService");
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GET_METHOD_ID(gPowerManagerServiceClassInfo.userActivityFromNative, clazz,
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"userActivityFromNative", "(JII)V");
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// Initialize
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for (int i = 0; i <= USER_ACTIVITY_EVENT_LAST; i++) {
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gLastEventTime[i] = LLONG_MIN;
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}
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gPowerManagerServiceObj = NULL;
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return 0;
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}
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} /* namespace android */
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