BatteryStats: Update to use power.stats HAL (5626d082) · Commits · e / os / android_frameworks_base

services/core/jni/Android.bp

+1 −0

Original line number	Diff line number	Diff line
		@@ -111,6 +111,7 @@ cc_defaults {
		"android.hardware.light@2.0",
		"android.hardware.power@1.0",
		"android.hardware.power@1.1",
		"android.hardware.power.stats@1.0",
		"android.hardware.tetheroffload.config@1.0",
		"android.hardware.thermal@1.0",
		"android.hardware.tv.cec@1.0",

services/core/jni/com_android_server_am_BatteryStatsService.cpp

+394 −20

Original line number	Diff line number	Diff line
		@@ -27,9 +27,11 @@
		#include <sys/stat.h>
		#include <sys/types.h>
		#include <unistd.h>
		#include <unordered_map>

		#include <android/hardware/power/1.0/IPower.h>
		#include <android/hardware/power/1.1/IPower.h>
		#include <android/hardware/power/stats/1.0/IPowerStats.h>
		#include <android/system/suspend/1.0/ISystemSuspend.h>
		#include <android/system/suspend/1.0/ISystemSuspendCallback.h>
		#include <android_runtime/AndroidRuntime.h>
		@@ -74,6 +76,33 @@ static jmethodID jgetSubsystem = NULL;
		static jmethodID jputVoter = NULL;
		static jmethodID jputState = NULL;

		std::mutex gPowerHalMutex;
		std::unordered_map<uint32_t, std::string> gPowerStatsHalEntityNames = {};
		std::unordered_map<uint32_t, std::unordered_map<uint32_t, std::string>>
		gPowerStatsHalStateNames = {};
		std::vector<uint32_t> gPowerStatsHalPlatformIds = {};
		std::vector<uint32_t> gPowerStatsHalSubsystemIds = {};
		sp<android::hardware::power::stats::V1_0::IPowerStats> gPowerStatsHalV1_0 = nullptr;
		std::function<void(JNIEnv*, jobject)> gGetLowPowerStatsImpl = {};
		std::function<jint(JNIEnv*, jobject)> gGetPlatformLowPowerStatsImpl = {};
		std::function<jint(JNIEnv*, jobject)> gGetSubsystemLowPowerStatsImpl = {};

		// The caller must be holding gPowerHalMutex.
		static void deinitPowerStatsLocked() {
		gPowerStatsHalV1_0 = nullptr;
		}

		struct PowerHalDeathRecipient : virtual public hardware::hidl_death_recipient {
		virtual void serviceDied(uint64_t cookie,
		const wp<android::hidl::base::V1_0::IBase>& who) override {
		// The HAL just died. Reset all handles to HAL services.
		std::lock_guard<std::mutex> lock(gPowerHalMutex);
		deinitPowerStatsLocked();
		}
		};

		sp<PowerHalDeathRecipient> gDeathRecipient = new PowerHalDeathRecipient();

		class WakeupCallback : public ISystemSuspendCallback {
		public:
		Return<void> notifyWakeup(bool success) override {
		@@ -202,18 +231,291 @@ static jint nativeWaitWakeup(JNIEnv *env, jobject clazz, jobject outBuf)
		return mergedreasonpos - mergedreason;
		}

		static void getLowPowerStats(JNIEnv* env, jobject /* clazz */, jobject jrpmStats) {
		if (jrpmStats == NULL) {
		jniThrowException(env, "java/lang/NullPointerException",
		"The rpmstats jni input jobject jrpmStats is null.");
		// The caller must be holding gPowerHalMutex.
		static bool checkResultLocked(const Return<void> &ret, const char* function) {
		if (!ret.isOk()) {
		ALOGE("%s failed: requested HAL service not available. Description: %s",
		function, ret.description().c_str());
		if (ret.isDeadObject()) {
		deinitPowerStatsLocked();
		}
		return false;
		}
		return true;
		}

		// The caller must be holding gPowerHalMutex.
		// gPowerStatsHalV1_0 must not be null
		static bool initializePowerStats() {
		using android::hardware::power::stats::V1_0::Status;
		using android::hardware::power::stats::V1_0::PowerEntityType;

		// Clear out previous content if we are re-initializing
		gPowerStatsHalEntityNames.clear();
		gPowerStatsHalStateNames.clear();
		gPowerStatsHalPlatformIds.clear();
		gPowerStatsHalSubsystemIds.clear();

		Return<void> ret;
		ret = gPowerStatsHalV1_0->getPowerEntityInfo([](auto infos, auto status) {
		if (status != Status::SUCCESS) {
		ALOGE("Error getting power entity info");
		return;
		}
		if (jgetAndUpdatePlatformState == NULL \|\| jgetSubsystem == NULL
		\|\| jputVoter == NULL \|\| jputState == NULL) {
		ALOGE("A rpmstats jni jmethodID is null.");

		// construct lookup table of powerEntityId to power entity name
		// also construct vector of platform and subsystem IDs
		for (auto info : infos) {
		gPowerStatsHalEntityNames.emplace(info.powerEntityId, info.powerEntityName);
		if (info.type == PowerEntityType::POWER_DOMAIN) {
		gPowerStatsHalPlatformIds.emplace_back(info.powerEntityId);
		} else {
		gPowerStatsHalSubsystemIds.emplace_back(info.powerEntityId);
		}
		}
		});
		if (!checkResultLocked(ret, __func__)) {
		return false;
		}

		ret = gPowerStatsHalV1_0->getPowerEntityStateInfo({}, [](auto stateSpaces, auto status) {
		if (status != Status::SUCCESS) {
		ALOGE("Error getting state info");
		return;
		}

		// construct lookup table of powerEntityId, powerEntityStateId to power entity state name
		for (auto stateSpace : stateSpaces) {
		std::unordered_map<uint32_t, std::string> stateNames = {};
		for (auto state : stateSpace.states) {
		stateNames.emplace(state.powerEntityStateId,
		state.powerEntityStateName);
		}
		gPowerStatsHalStateNames.emplace(stateSpace.powerEntityId, stateNames);
		}
		});
		if (!checkResultLocked(ret, __func__)) {
		return false;
		}

		return (!gPowerStatsHalEntityNames.empty()) && (!gPowerStatsHalStateNames.empty());
		}

		// The caller must be holding gPowerHalMutex.
		static bool getPowerStatsHalLocked() {
		if (gPowerStatsHalV1_0 == nullptr) {
		gPowerStatsHalV1_0 = android::hardware::power::stats::V1_0::IPowerStats::getService();
		if (gPowerStatsHalV1_0 == nullptr) {
		ALOGE("Unable to get power.stats HAL service.");
		return false;
		}

		// Link death recipient to power.stats service handle
		hardware::Return<bool> linked = gPowerStatsHalV1_0->linkToDeath(gDeathRecipient, 0);
		if (!linked.isOk()) {
		ALOGE("Transaction error in linking to power.stats HAL death: %s",
		linked.description().c_str());
		deinitPowerStatsLocked();
		return false;
		} else if (!linked) {
		ALOGW("Unable to link to power.stats HAL death notifications");
		// We should still continue even though linking failed
		}
		return initializePowerStats();
		}
		return true;
		}

		// The caller must be holding powerHalMutex.
		static void getPowerStatsHalLowPowerData(JNIEnv* env, jobject jrpmStats) {
		using android::hardware::power::stats::V1_0::Status;

		if (!getPowerStatsHalLocked()) {
		ALOGE("failed to get low power stats");
		return;
		}

		// Get power entity state residency data
		bool success = false;
		Return<void> ret = gPowerStatsHalV1_0->getPowerEntityStateResidencyData({},
		[&env, &jrpmStats, &success](auto results, auto status) {
		if (status == Status::NOT_SUPPORTED) {
		ALOGW("getPowerEntityStateResidencyData is not supported");
		success = false;
		return;
		}

		for (auto result : results) {
		jobject jsubsystem = env->CallObjectMethod(jrpmStats, jgetSubsystem,
		env->NewStringUTF(gPowerStatsHalEntityNames.at(result.powerEntityId).c_str()));
		if (jsubsystem == NULL) {
		ALOGE("The rpmstats jni jobject jsubsystem is null.");
		return;
		}
		for (auto stateResidency : result.stateResidencyData) {

		env->CallVoidMethod(jsubsystem, jputState,
		env->NewStringUTF(gPowerStatsHalStateNames.at(result.powerEntityId)
		.at(stateResidency.powerEntityStateId).c_str()),
		stateResidency.totalTimeInStateMs,
		stateResidency.totalStateEntryCount);
		}
		}
		success = true;
		});
		checkResultLocked(ret, __func__);
		if (!success) {
		ALOGE("getPowerEntityStateResidencyData failed");
		}
		}

		static jint getPowerStatsHalPlatformData(JNIEnv* env, jobject outBuf) {
		using android::hardware::power::stats::V1_0::Status;
		using hardware::power::stats::V1_0::PowerEntityStateResidencyResult;
		using hardware::power::stats::V1_0::PowerEntityStateResidencyData;

		if (!getPowerStatsHalLocked()) {
		ALOGE("failed to get low power stats");
		return -1;
		}

		char output = (char)env->GetDirectBufferAddress(outBuf);
		char *offset = output;
		int remaining = (int)env->GetDirectBufferCapacity(outBuf);
		int total_added = -1;

		// Get power entity state residency data
		Return<void> ret = gPowerStatsHalV1_0->getPowerEntityStateResidencyData(
		gPowerStatsHalPlatformIds,
		[&offset, &remaining, &total_added](auto results, auto status) {
		if (status == Status::NOT_SUPPORTED) {
		ALOGW("getPowerEntityStateResidencyData is not supported");
		return;
		}

		for (size_t i = 0; i < results.size(); i++) {
		const PowerEntityStateResidencyResult& result = results[i];

		for (size_t j = 0; j < result.stateResidencyData.size(); j++) {
		const PowerEntityStateResidencyData& stateResidency =
		result.stateResidencyData[j];
		int added = snprintf(offset, remaining,
		"state_%zu name=%s time=%" PRIu64 " count=%" PRIu64 " ",
		j + 1, gPowerStatsHalStateNames.at(result.powerEntityId)
		.at(stateResidency.powerEntityStateId).c_str(),
		stateResidency.totalTimeInStateMs,
		stateResidency.totalStateEntryCount);
		if (added < 0) {
		break;
		}
		if (added > remaining) {
		added = remaining;
		}
		offset += added;
		remaining -= added;
		total_added += added;
		}
		if (remaining <= 0) {
		/* rewrite NULL character*/
		offset--;
		total_added--;
		ALOGE("power.stats Hal: buffer not enough");
		break;
		}
		}
		});
		if (!checkResultLocked(ret, __func__)) {
		return -1;
		}

		total_added += 1;
		return total_added;
		}

		static jint getPowerStatsHalSubsystemData(JNIEnv* env, jobject outBuf) {
		using android::hardware::power::stats::V1_0::Status;
		using hardware::power::stats::V1_0::PowerEntityStateResidencyResult;
		using hardware::power::stats::V1_0::PowerEntityStateResidencyData;

		if (!getPowerStatsHalLocked()) {
		ALOGE("failed to get low power stats");
		return -1;
		}

		char output = (char)env->GetDirectBufferAddress(outBuf);
		char *offset = output;
		int remaining = (int)env->GetDirectBufferCapacity(outBuf);
		int total_added = -1;

		// Get power entity state residency data
		Return<void> ret = gPowerStatsHalV1_0->getPowerEntityStateResidencyData(
		gPowerStatsHalSubsystemIds,
		[&offset, &remaining, &total_added](auto results, auto status) {
		if (status == Status::NOT_SUPPORTED) {
		ALOGW("getPowerEntityStateResidencyData is not supported");
		return;
		}

		int added = snprintf(offset, remaining, "SubsystemPowerState ");
		offset += added;
		remaining -= added;
		total_added += added;

		for (size_t i = 0; i < results.size(); i++) {
		const PowerEntityStateResidencyResult& result = results[i];
		added = snprintf(offset, remaining, "subsystem_%zu name=%s ",
		i + 1, gPowerStatsHalEntityNames.at(result.powerEntityId).c_str());
		if (added < 0) {
		break;
		}

		if (added > remaining) {
		added = remaining;
		}

		offset += added;
		remaining -= added;
		total_added += added;

		for (size_t j = 0; j < result.stateResidencyData.size(); j++) {
		const PowerEntityStateResidencyData& stateResidency =
		result.stateResidencyData[j];
		added = snprintf(offset, remaining,
		"state_%zu name=%s time=%" PRIu64 " count=%" PRIu64 " last entry=%"
		PRIu64 " ", j + 1, gPowerStatsHalStateNames.at(result.powerEntityId)
		.at(stateResidency.powerEntityStateId).c_str(),
		stateResidency.totalTimeInStateMs,
		stateResidency.totalStateEntryCount,
		stateResidency.lastEntryTimestampMs);
		if (added < 0) {
		break;
		}
		if (added > remaining) {
		added = remaining;
		}
		offset += added;
		remaining -= added;
		total_added += added;
		}
		if (remaining <= 0) {
		/* rewrite NULL character*/
		offset--;
		total_added--;
		ALOGE("power.stats Hal: buffer not enough");
		break;
		}
		}
		});
		if (!checkResultLocked(ret, __func__)) {
		return -1;
		}

		total_added += 1;
		return total_added;
		}

		// The caller must be holding powerHalMutex.
		static void getPowerHalLowPowerData(JNIEnv* env, jobject jrpmStats) {
		sp<IPowerV1_0> powerHalV1_0 = getPowerHalV1_0();
		if (powerHalV1_0 == nullptr) {
		ALOGE("Power Hal not loaded");
		@@ -286,17 +588,12 @@ static void getLowPowerStats(JNIEnv* env, jobject /* clazz */, jobject jrpmStats
		processPowerHalReturn(ret, "getSubsystemLowPowerStats");
		}

		static jint getPlatformLowPowerStats(JNIEnv* env, jobject /* clazz */, jobject outBuf) {
		static jint getPowerHalPlatformData(JNIEnv* env, jobject outBuf) {
		char output = (char)env->GetDirectBufferAddress(outBuf);
		char *offset = output;
		int remaining = (int)env->GetDirectBufferCapacity(outBuf);
		int total_added = -1;

		if (outBuf == NULL) {
		jniThrowException(env, "java/lang/NullPointerException", "null argument");
		return -1;
		}

		{
		sp<IPowerV1_0> powerHalV1_0 = getPowerHalV1_0();
		if (powerHalV1_0 == nullptr) {
		@@ -365,7 +662,7 @@ static jint getPlatformLowPowerStats(JNIEnv* env, jobject /* clazz */, jobject o
		return total_added;
		}

		static jint getSubsystemLowPowerStats(JNIEnv* env, jobject /* clazz */, jobject outBuf) {
		static jint getPowerHalSubsystemData(JNIEnv* env, jobject outBuf) {
		char output = (char)env->GetDirectBufferAddress(outBuf);
		char *offset = output;
		int remaining = (int)env->GetDirectBufferCapacity(outBuf);
		@@ -374,11 +671,6 @@ static jint getSubsystemLowPowerStats(JNIEnv* env, jobject /* clazz */, jobject
		// This is a IPower 1.1 API
		sp<IPowerV1_1> powerHal_1_1 = nullptr;

		if (outBuf == NULL) {
		jniThrowException(env, "java/lang/NullPointerException", "null argument");
		return -1;
		}

		{
		// Trying to get 1.1, this will succeed only for devices supporting 1.1
		powerHal_1_1 = getPowerHalV1_1();
		@@ -458,6 +750,88 @@ static jint getSubsystemLowPowerStats(JNIEnv* env, jobject /* clazz */, jobject
		return total_added;
		}

		static void setUpPowerStatsLocked() {
		// First see if power.stats HAL is available. Fall back to power HAL if
		// power.stats HAL is unavailable.
		if (android::hardware::power::stats::V1_0::IPowerStats::getService() != nullptr) {
		ALOGI("Using power.stats HAL");
		gGetLowPowerStatsImpl = getPowerStatsHalLowPowerData;
		gGetPlatformLowPowerStatsImpl = getPowerStatsHalPlatformData;
		gGetSubsystemLowPowerStatsImpl = getPowerStatsHalSubsystemData;
		} else if (android::hardware::power::V1_0::IPower::getService() != nullptr) {
		ALOGI("Using power HAL");
		gGetLowPowerStatsImpl = getPowerHalLowPowerData;
		gGetPlatformLowPowerStatsImpl = getPowerHalPlatformData;
		gGetSubsystemLowPowerStatsImpl = getPowerHalSubsystemData;
		}
		}

		static void getLowPowerStats(JNIEnv* env, jobject /* clazz */, jobject jrpmStats) {
		if (jrpmStats == NULL) {
		jniThrowException(env, "java/lang/NullPointerException",
		"The rpmstats jni input jobject jrpmStats is null.");
		return;
		}
		if (jgetAndUpdatePlatformState == NULL \|\| jgetSubsystem == NULL
		\|\| jputVoter == NULL \|\| jputState == NULL) {
		ALOGE("A rpmstats jni jmethodID is null.");
		return;
		}

		std::lock_guard<std::mutex> lock(gPowerHalMutex);

		if (!gGetLowPowerStatsImpl) {
		setUpPowerStatsLocked();
		}

		if (gGetLowPowerStatsImpl) {
		return gGetLowPowerStatsImpl(env, jrpmStats);
		}

		ALOGE("Unable to load Power Hal or power.stats HAL");
		return;
		}

		static jint getPlatformLowPowerStats(JNIEnv* env, jobject /* clazz */, jobject outBuf) {
		if (outBuf == NULL) {
		jniThrowException(env, "java/lang/NullPointerException", "null argument");
		return -1;
		}

		std::lock_guard<std::mutex> lock(gPowerHalMutex);

		if (!gGetPlatformLowPowerStatsImpl) {
		setUpPowerStatsLocked();
		}

		if (gGetPlatformLowPowerStatsImpl) {
		return gGetPlatformLowPowerStatsImpl(env, outBuf);
		}

		ALOGE("Unable to load Power Hal or power.stats HAL");
		return -1;
		}

		static jint getSubsystemLowPowerStats(JNIEnv* env, jobject /* clazz */, jobject outBuf) {
		if (outBuf == NULL) {
		jniThrowException(env, "java/lang/NullPointerException", "null argument");
		return -1;
		}

		std::lock_guard<std::mutex> lock(gPowerHalMutex);

		if (!gGetSubsystemLowPowerStatsImpl) {
		setUpPowerStatsLocked();
		}

		if (gGetSubsystemLowPowerStatsImpl) {
		return gGetSubsystemLowPowerStatsImpl(env, outBuf);
		}

		ALOGE("Unable to load Power Hal or power.stats HAL");
		return -1;
		}

		static const JNINativeMethod method_table[] = {
		{ "nativeWaitWakeup", "(Ljava/nio/ByteBuffer;)I", (void*)nativeWaitWakeup },
		{ "getLowPowerStats", "(Lcom/android/internal/os/RpmStats;)V", (void*)getLowPowerStats },