services/core/jni/com_android_server_power_PowerManagerService.cpp - platform/frameworks/base - Git at Google

 /*
  * Copyright (C) 2010 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.
  */

 #define LOG_TAG "PowerManagerService-JNI"

 //#define LOG_NDEBUG 0

 #include <aidl/android/system/suspend/ISystemSuspend.h>
 #include <aidl/android/system/suspend/IWakeLock.h>
 #include <android/hardware/power/1.1/IPower.h>
 #include <android/hardware/power/Boost.h>
 #include <android/hardware/power/IPower.h>
 #include <android/hardware/power/Mode.h>
 #include <android/system/suspend/ISuspendControlService.h>
 #include <android/system/suspend/internal/ISuspendControlServiceInternal.h>
 #include <nativehelper/JNIHelp.h>
 #include "jni.h"

 #include <nativehelper/ScopedUtfChars.h>
 #include <powermanager/PowerHalController.h>

 #include <limits.h>

 #include <android-base/chrono_utils.h>
 #include <android/binder_manager.h>
 #include <android_runtime/AndroidRuntime.h>
 #include <android_runtime/Log.h>
 #include <binder/IServiceManager.h>
 #include <gui/SurfaceComposerClient.h>
 #include <hardware/power.h>
 #include <hardware_legacy/power.h>
 #include <hidl/ServiceManagement.h>
 #include <utils/Log.h>
 #include <utils/String8.h>
 #include <utils/Timers.h>
 #include <utils/misc.h>

 #include "com_android_server_power_PowerManagerService.h"

 using aidl::android::system::suspend::ISystemSuspend;
 using aidl::android::system::suspend::IWakeLock;
 using aidl::android::system::suspend::WakeLockType;
 using android::String8;
 using android::hardware::power::Boost;
 using android::hardware::power::Mode;
 using android::system::suspend::ISuspendControlService;
 using IPowerV1_1 = android::hardware::power::V1_1::IPower;
 using IPowerV1_0 = android::hardware::power::V1_0::IPower;
 using IPowerAidl = android::hardware::power::IPower;

 namespace android {

 // ----------------------------------------------------------------------------

 static struct {
     jmethodID userActivityFromNative;
 } gPowerManagerServiceClassInfo;

 // ----------------------------------------------------------------------------

 static jobject gPowerManagerServiceObj;
 static power::PowerHalController gPowerHalController;
 static nsecs_t gLastEventTime[USER_ACTIVITY_EVENT_LAST + 1];

 // Throttling interval for user activity calls.
 static const nsecs_t MIN_TIME_BETWEEN_USERACTIVITIES = 100 * 1000000L; // 100ms

 // ----------------------------------------------------------------------------

 static bool checkAndClearExceptionFromCallback(JNIEnv* env, const char* methodName) {
     if (env->ExceptionCheck()) {
         ALOGE("An exception was thrown by callback '%s'.", methodName);
         LOGE_EX(env);
         env->ExceptionClear();
         return true;
     }
     return false;
 }

 static void setPowerBoost(Boost boost, int32_t durationMs) {
     gPowerHalController.setBoost(boost, durationMs);
     SurfaceComposerClient::notifyPowerBoost(static_cast<int32_t>(boost));
 }

 static bool setPowerMode(Mode mode, bool enabled) {
     android::base::Timer t;
     auto result = gPowerHalController.setMode(mode, enabled);
     if (mode == Mode::INTERACTIVE && t.duration() > 20ms) {
         ALOGD("Excessive delay in setting interactive mode to %s while turning screen %s",
               enabled ? "true" : "false", enabled ? "on" : "off");
     }
     return result.isOk();
 }

 void android_server_PowerManagerService_userActivity(nsecs_t eventTime, int32_t eventType,
                                                      int32_t displayId) {
     if (gPowerManagerServiceObj) {
         // Throttle calls into user activity by event type.
         // We're a little conservative about argument checking here in case the caller
         // passes in bad data which could corrupt system state.
         if (eventType >= 0 && eventType <= USER_ACTIVITY_EVENT_LAST) {
             nsecs_t now = systemTime(SYSTEM_TIME_MONOTONIC);
             if (eventTime > now) {
                 eventTime = now;
             }

             if (gLastEventTime[eventType] + MIN_TIME_BETWEEN_USERACTIVITIES > eventTime) {
                 return;
             }
             gLastEventTime[eventType] = eventTime;

             // Tell the power HAL when user activity occurs.
             setPowerBoost(Boost::INTERACTION, 0);
         }

         JNIEnv* env = AndroidRuntime::getJNIEnv();

         env->CallVoidMethod(gPowerManagerServiceObj,
                 gPowerManagerServiceClassInfo.userActivityFromNative,
                 nanoseconds_to_milliseconds(eventTime), eventType, displayId, 0);
         checkAndClearExceptionFromCallback(env, "userActivityFromNative");
     }
 }

 static std::shared_ptr<ISystemSuspend> gSuspendHal = nullptr;
 static sp<ISuspendControlService> gSuspendControl = nullptr;
 static sp<system::suspend::internal::ISuspendControlServiceInternal> gSuspendControlInternal =
         nullptr;
 static std::shared_ptr<IWakeLock> gSuspendBlocker = nullptr;
 static std::mutex gSuspendMutex;

 // Assume SystemSuspend HAL is always alive.
 // TODO: Force device to restart if SystemSuspend HAL dies.
 std::shared_ptr<ISystemSuspend> getSuspendHal() {
     static std::once_flag suspendHalFlag;
     std::call_once(suspendHalFlag, []() {
         const std::string suspendInstance = std::string() + ISystemSuspend::descriptor + "/default";
         gSuspendHal = ISystemSuspend::fromBinder(
                 ndk::SpAIBinder(AServiceManager_waitForService(suspendInstance.c_str())));
         assert(gSuspendHal != nullptr);
     });
     return gSuspendHal;
 }

 sp<ISuspendControlService> getSuspendControl() {
     static std::once_flag suspendControlFlag;
     std::call_once(suspendControlFlag, [](){
         gSuspendControl = waitForService<ISuspendControlService>(String16("suspend_control"));
         LOG_ALWAYS_FATAL_IF(gSuspendControl == nullptr);
     });
     return gSuspendControl;
 }

 sp<system::suspend::internal::ISuspendControlServiceInternal> getSuspendControlInternal() {
     static std::once_flag suspendControlFlag;
     std::call_once(suspendControlFlag, []() {
         gSuspendControlInternal =
                 waitForService<system::suspend::internal::ISuspendControlServiceInternal>(
                         String16("suspend_control_internal"));
         LOG_ALWAYS_FATAL_IF(gSuspendControlInternal == nullptr);
     });
     return gSuspendControlInternal;
 }

 void enableAutoSuspend() {
     static bool enabled = false;
     if (!enabled) {
         static sp<IBinder> autosuspendClientToken = new BBinder();
         sp<system::suspend::internal::ISuspendControlServiceInternal> suspendControl =
                 getSuspendControlInternal();
         suspendControl->enableAutosuspend(autosuspendClientToken, &enabled);
     }

     {
         std::lock_guard<std::mutex> lock(gSuspendMutex);
         if (gSuspendBlocker) {
             gSuspendBlocker->release();
             gSuspendBlocker = nullptr;
         }
     }
 }

 void disableAutoSuspend() {
     std::lock_guard<std::mutex> lock(gSuspendMutex);
     if (!gSuspendBlocker) {
         std::shared_ptr<ISystemSuspend> suspendHal = getSuspendHal();
         suspendHal->acquireWakeLock(WakeLockType::PARTIAL, "PowerManager.SuspendLockout",
                                     &gSuspendBlocker);
         assert(gSuspendBlocker != nullptr);
     }
 }

 // ----------------------------------------------------------------------------

 static void nativeInit(JNIEnv* env, jobject obj) {
     gPowerManagerServiceObj = env->NewGlobalRef(obj);
     gPowerHalController.init();
 }

 static void nativeAcquireSuspendBlocker(JNIEnv *env, jclass /* clazz */, jstring nameStr) {
     ScopedUtfChars name(env, nameStr);
     acquire_wake_lock(PARTIAL_WAKE_LOCK, name.c_str());
 }

 static void nativeReleaseSuspendBlocker(JNIEnv *env, jclass /* clazz */, jstring nameStr) {
     ScopedUtfChars name(env, nameStr);
     release_wake_lock(name.c_str());
 }

 static void nativeSetAutoSuspend(JNIEnv* /* env */, jclass /* clazz */, jboolean enable) {
     if (enable) {
         android::base::Timer t;
         enableAutoSuspend();
         if (t.duration() > 100ms) {
             ALOGD("Excessive delay in autosuspend_enable() while turning screen off");
         }
     } else {
         android::base::Timer t;
         disableAutoSuspend();
         if (t.duration() > 100ms) {
             ALOGD("Excessive delay in autosuspend_disable() while turning screen on");
         }
     }
 }

 static void nativeSetPowerBoost(JNIEnv* /* env */, jclass /* clazz */, jint boost,
                                 jint durationMs) {
     setPowerBoost(static_cast<Boost>(boost), durationMs);
 }

 static jboolean nativeSetPowerMode(JNIEnv* /* env */, jclass /* clazz */, jint mode,
                                    jboolean enabled) {
     return setPowerMode(static_cast<Mode>(mode), enabled);
 }

 static bool nativeForceSuspend(JNIEnv* /* env */, jclass /* clazz */) {
     bool retval = false;
     getSuspendControlInternal()->forceSuspend(&retval);
     return retval;
 }

 // ----------------------------------------------------------------------------

 static const JNINativeMethod gPowerManagerServiceMethods[] = {
         /* name, signature, funcPtr */
         {"nativeInit", "()V", (void*)nativeInit},
         {"nativeAcquireSuspendBlocker", "(Ljava/lang/String;)V",
          (void*)nativeAcquireSuspendBlocker},
         {"nativeForceSuspend", "()Z", (void*)nativeForceSuspend},
         {"nativeReleaseSuspendBlocker", "(Ljava/lang/String;)V",
          (void*)nativeReleaseSuspendBlocker},
         {"nativeSetAutoSuspend", "(Z)V", (void*)nativeSetAutoSuspend},
         {"nativeSetPowerBoost", "(II)V", (void*)nativeSetPowerBoost},
         {"nativeSetPowerMode", "(IZ)Z", (void*)nativeSetPowerMode},
 };

 #define FIND_CLASS(var, className) \
         var = env->FindClass(className); \
         LOG_FATAL_IF(! (var), "Unable to find class " className);

 #define GET_METHOD_ID(var, clazz, methodName, methodDescriptor) \
         var = env->GetMethodID(clazz, methodName, methodDescriptor); \
         LOG_FATAL_IF(! (var), "Unable to find method " methodName);

 #define GET_FIELD_ID(var, clazz, fieldName, fieldDescriptor) \
         var = env->GetFieldID(clazz, fieldName, fieldDescriptor); \
         LOG_FATAL_IF(! (var), "Unable to find field " fieldName);

 int register_android_server_PowerManagerService(JNIEnv* env) {
     int res = jniRegisterNativeMethods(env, "com/android/server/power/PowerManagerService",
             gPowerManagerServiceMethods, NELEM(gPowerManagerServiceMethods));
     (void) res;  // Faked use when LOG_NDEBUG.
     LOG_FATAL_IF(res < 0, "Unable to register native methods.");

     // Callbacks

     jclass clazz;
     FIND_CLASS(clazz, "com/android/server/power/PowerManagerService");

     GET_METHOD_ID(gPowerManagerServiceClassInfo.userActivityFromNative, clazz,
             "userActivityFromNative", "(JIII)V");

     // Initialize
     for (int i = 0; i <= USER_ACTIVITY_EVENT_LAST; i++) {
         gLastEventTime[i] = LLONG_MIN;
     }
     gPowerManagerServiceObj = NULL;
     return 0;
 }

 } /* namespace android */
	/*
	* Copyright (C) 2010 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.
	*/

	#define LOG_TAG "PowerManagerService-JNI"

	//#define LOG_NDEBUG 0

	#include <aidl/android/system/suspend/ISystemSuspend.h>
	#include <aidl/android/system/suspend/IWakeLock.h>
	#include <android/hardware/power/1.1/IPower.h>
	#include <android/hardware/power/Boost.h>
	#include <android/hardware/power/IPower.h>
	#include <android/hardware/power/Mode.h>
	#include <android/system/suspend/ISuspendControlService.h>
	#include <android/system/suspend/internal/ISuspendControlServiceInternal.h>
	#include <nativehelper/JNIHelp.h>
	#include "jni.h"

	#include <nativehelper/ScopedUtfChars.h>
	#include <powermanager/PowerHalController.h>

	#include <limits.h>

	#include <android-base/chrono_utils.h>
	#include <android/binder_manager.h>
	#include <android_runtime/AndroidRuntime.h>
	#include <android_runtime/Log.h>
	#include <binder/IServiceManager.h>
	#include <gui/SurfaceComposerClient.h>
	#include <hardware/power.h>
	#include <hardware_legacy/power.h>
	#include <hidl/ServiceManagement.h>
	#include <utils/Log.h>
	#include <utils/String8.h>
	#include <utils/Timers.h>
	#include <utils/misc.h>

	#include "com_android_server_power_PowerManagerService.h"

	using aidl::android::system::suspend::ISystemSuspend;
	using aidl::android::system::suspend::IWakeLock;
	using aidl::android::system::suspend::WakeLockType;
	using android::String8;
	using android::hardware::power::Boost;
	using android::hardware::power::Mode;
	using android::system::suspend::ISuspendControlService;
	using IPowerV1_1 = android::hardware::power::V1_1::IPower;
	using IPowerV1_0 = android::hardware::power::V1_0::IPower;
	using IPowerAidl = android::hardware::power::IPower;

	namespace android {

	// ----------------------------------------------------------------------------

	static struct {
	jmethodID userActivityFromNative;
	} gPowerManagerServiceClassInfo;

	// ----------------------------------------------------------------------------

	static jobject gPowerManagerServiceObj;
	static power::PowerHalController gPowerHalController;
	static nsecs_t gLastEventTime[USER_ACTIVITY_EVENT_LAST + 1];

	// Throttling interval for user activity calls.
	static const nsecs_t MIN_TIME_BETWEEN_USERACTIVITIES = 100 * 1000000L; // 100ms

	// ----------------------------------------------------------------------------

	static bool checkAndClearExceptionFromCallback(JNIEnv* env, const char* methodName) {
	if (env->ExceptionCheck()) {
	ALOGE("An exception was thrown by callback '%s'.", methodName);
	LOGE_EX(env);
	env->ExceptionClear();
	return true;
	}
	return false;
	}

	static void setPowerBoost(Boost boost, int32_t durationMs) {
	gPowerHalController.setBoost(boost, durationMs);
	SurfaceComposerClient::notifyPowerBoost(static_cast<int32_t>(boost));
	}

	static bool setPowerMode(Mode mode, bool enabled) {
	android::base::Timer t;
	auto result = gPowerHalController.setMode(mode, enabled);
	if (mode == Mode::INTERACTIVE && t.duration() > 20ms) {
	ALOGD("Excessive delay in setting interactive mode to %s while turning screen %s",
	enabled ? "true" : "false", enabled ? "on" : "off");
	}
	return result.isOk();
	}

	void android_server_PowerManagerService_userActivity(nsecs_t eventTime, int32_t eventType,
	int32_t displayId) {
	if (gPowerManagerServiceObj) {
	// Throttle calls into user activity by event type.
	// We're a little conservative about argument checking here in case the caller
	// passes in bad data which could corrupt system state.
	if (eventType >= 0 && eventType <= USER_ACTIVITY_EVENT_LAST) {
	nsecs_t now = systemTime(SYSTEM_TIME_MONOTONIC);
	if (eventTime > now) {
	eventTime = now;
	}

	if (gLastEventTime[eventType] + MIN_TIME_BETWEEN_USERACTIVITIES > eventTime) {
	return;
	}
	gLastEventTime[eventType] = eventTime;

	// Tell the power HAL when user activity occurs.
	setPowerBoost(Boost::INTERACTION, 0);
	}

	JNIEnv* env = AndroidRuntime::getJNIEnv();

	env->CallVoidMethod(gPowerManagerServiceObj,
	gPowerManagerServiceClassInfo.userActivityFromNative,
	nanoseconds_to_milliseconds(eventTime), eventType, displayId, 0);
	checkAndClearExceptionFromCallback(env, "userActivityFromNative");
	}
	}

	static std::shared_ptr<ISystemSuspend> gSuspendHal = nullptr;
	static sp<ISuspendControlService> gSuspendControl = nullptr;
	static sp<system::suspend::internal::ISuspendControlServiceInternal> gSuspendControlInternal =
	nullptr;
	static std::shared_ptr<IWakeLock> gSuspendBlocker = nullptr;
	static std::mutex gSuspendMutex;

	// Assume SystemSuspend HAL is always alive.
	// TODO: Force device to restart if SystemSuspend HAL dies.
	std::shared_ptr<ISystemSuspend> getSuspendHal() {
	static std::once_flag suspendHalFlag;
	std::call_once(suspendHalFlag, []() {
	const std::string suspendInstance = std::string() + ISystemSuspend::descriptor + "/default";
	gSuspendHal = ISystemSuspend::fromBinder(
	ndk::SpAIBinder(AServiceManager_waitForService(suspendInstance.c_str())));
	assert(gSuspendHal != nullptr);
	});
	return gSuspendHal;
	}

	sp<ISuspendControlService> getSuspendControl() {
	static std::once_flag suspendControlFlag;
	std::call_once(suspendControlFlag, [](){
	gSuspendControl = waitForService<ISuspendControlService>(String16("suspend_control"));
	LOG_ALWAYS_FATAL_IF(gSuspendControl == nullptr);
	});
	return gSuspendControl;
	}

	sp<system::suspend::internal::ISuspendControlServiceInternal> getSuspendControlInternal() {
	static std::once_flag suspendControlFlag;
	std::call_once(suspendControlFlag, []() {
	gSuspendControlInternal =
	waitForService<system::suspend::internal::ISuspendControlServiceInternal>(
	String16("suspend_control_internal"));
	LOG_ALWAYS_FATAL_IF(gSuspendControlInternal == nullptr);
	});
	return gSuspendControlInternal;
	}

	void enableAutoSuspend() {
	static bool enabled = false;
	if (!enabled) {
	static sp<IBinder> autosuspendClientToken = new BBinder();
	sp<system::suspend::internal::ISuspendControlServiceInternal> suspendControl =
	getSuspendControlInternal();
	suspendControl->enableAutosuspend(autosuspendClientToken, &enabled);
	}

	{
	std::lock_guard<std::mutex> lock(gSuspendMutex);
	if (gSuspendBlocker) {
	gSuspendBlocker->release();
	gSuspendBlocker = nullptr;
	}
	}
	}

	void disableAutoSuspend() {
	std::lock_guard<std::mutex> lock(gSuspendMutex);
	if (!gSuspendBlocker) {
	std::shared_ptr<ISystemSuspend> suspendHal = getSuspendHal();
	suspendHal->acquireWakeLock(WakeLockType::PARTIAL, "PowerManager.SuspendLockout",
	&gSuspendBlocker);
	assert(gSuspendBlocker != nullptr);
	}
	}

	// ----------------------------------------------------------------------------

	static void nativeInit(JNIEnv* env, jobject obj) {
	gPowerManagerServiceObj = env->NewGlobalRef(obj);
	gPowerHalController.init();
	}

	static void nativeAcquireSuspendBlocker(JNIEnv env, jclass / clazz */, jstring nameStr) {
	ScopedUtfChars name(env, nameStr);
	acquire_wake_lock(PARTIAL_WAKE_LOCK, name.c_str());
	}

	static void nativeReleaseSuspendBlocker(JNIEnv env, jclass / clazz */, jstring nameStr) {
	ScopedUtfChars name(env, nameStr);
	release_wake_lock(name.c_str());
	}

	static void nativeSetAutoSuspend(JNIEnv* /* env /, jclass / clazz */, jboolean enable) {
	if (enable) {
	android::base::Timer t;
	enableAutoSuspend();
	if (t.duration() > 100ms) {
	ALOGD("Excessive delay in autosuspend_enable() while turning screen off");
	}
	} else {
	android::base::Timer t;
	disableAutoSuspend();
	if (t.duration() > 100ms) {
	ALOGD("Excessive delay in autosuspend_disable() while turning screen on");
	}
	}
	}

	static void nativeSetPowerBoost(JNIEnv* /* env /, jclass / clazz */, jint boost,
	jint durationMs) {
	setPowerBoost(static_cast<Boost>(boost), durationMs);
	}

	static jboolean nativeSetPowerMode(JNIEnv* /* env /, jclass / clazz */, jint mode,
	jboolean enabled) {
	return setPowerMode(static_cast<Mode>(mode), enabled);
	}

	static bool nativeForceSuspend(JNIEnv* /* env /, jclass / clazz */) {
	bool retval = false;
	getSuspendControlInternal()->forceSuspend(&retval);
	return retval;
	}

	// ----------------------------------------------------------------------------

	static const JNINativeMethod gPowerManagerServiceMethods[] = {
	/* name, signature, funcPtr */
	{"nativeInit", "()V", (void*)nativeInit},
	{"nativeAcquireSuspendBlocker", "(Ljava/lang/String;)V",
	(void*)nativeAcquireSuspendBlocker},
	{"nativeForceSuspend", "()Z", (void*)nativeForceSuspend},
	{"nativeReleaseSuspendBlocker", "(Ljava/lang/String;)V",
	(void*)nativeReleaseSuspendBlocker},
	{"nativeSetAutoSuspend", "(Z)V", (void*)nativeSetAutoSuspend},
	{"nativeSetPowerBoost", "(II)V", (void*)nativeSetPowerBoost},
	{"nativeSetPowerMode", "(IZ)Z", (void*)nativeSetPowerMode},
	};

	#define FIND_CLASS(var, className) \
	var = env->FindClass(className); \
	LOG_FATAL_IF(! (var), "Unable to find class " className);

	#define GET_METHOD_ID(var, clazz, methodName, methodDescriptor) \
	var = env->GetMethodID(clazz, methodName, methodDescriptor); \
	LOG_FATAL_IF(! (var), "Unable to find method " methodName);

	#define GET_FIELD_ID(var, clazz, fieldName, fieldDescriptor) \
	var = env->GetFieldID(clazz, fieldName, fieldDescriptor); \
	LOG_FATAL_IF(! (var), "Unable to find field " fieldName);

	int register_android_server_PowerManagerService(JNIEnv* env) {
	int res = jniRegisterNativeMethods(env, "com/android/server/power/PowerManagerService",
	gPowerManagerServiceMethods, NELEM(gPowerManagerServiceMethods));
	(void) res; // Faked use when LOG_NDEBUG.
	LOG_FATAL_IF(res < 0, "Unable to register native methods.");

	// Callbacks

	jclass clazz;
	FIND_CLASS(clazz, "com/android/server/power/PowerManagerService");

	GET_METHOD_ID(gPowerManagerServiceClassInfo.userActivityFromNative, clazz,
	"userActivityFromNative", "(JIII)V");

	// Initialize
	for (int i = 0; i <= USER_ACTIVITY_EVENT_LAST; i++) {
	gLastEventTime[i] = LLONG_MIN;
	}
	gPowerManagerServiceObj = NULL;
	return 0;
	}

	} /* namespace android */