HardwarePropertiesManager: Add API for hardware properties retrieval
Add serive "hardwareproperties" and methods getDeviceTemperatures,
getCpuUsages and getFanSpeeds to retrieve hardware properties:
device temperatures (CPU, GPU and battery), CPU usages and fan speeds.
This is a public API.
Bug: 22407109
Change-Id: If7efcbba7b160256d41704b60d93a7218dcc79d7
diff --git a/api/current.txt b/api/current.txt
index 629d832..6b20e09 100644
--- a/api/current.txt
+++ b/api/current.txt
@@ -7972,6 +7972,7 @@
field public static final java.lang.String DOWNLOAD_SERVICE = "download";
field public static final java.lang.String DROPBOX_SERVICE = "dropbox";
field public static final java.lang.String FINGERPRINT_SERVICE = "fingerprint";
+ field public static final java.lang.String HARDWARE_PROPERTIES_SERVICE = "hardwareproperties";
field public static final java.lang.String INPUT_METHOD_SERVICE = "input_method";
field public static final java.lang.String INPUT_SERVICE = "input";
field public static final java.lang.String JOB_SCHEDULER_SERVICE = "jobscheduler";
@@ -27646,6 +27647,14 @@
method public final synchronized android.os.CountDownTimer start();
}
+ public final class CpuUsageInfo implements android.os.Parcelable {
+ method public int describeContents();
+ method public long getActive();
+ method public long getTotal();
+ method public void writeToParcel(android.os.Parcel, int);
+ field public static final android.os.Parcelable.Creator<android.os.CpuUsageInfo> CREATOR;
+ }
+
public class DeadObjectException extends android.os.RemoteException {
ctor public DeadObjectException();
ctor public DeadObjectException(java.lang.String);
@@ -27898,6 +27907,18 @@
method public boolean quitSafely();
}
+ public class HardwarePropertiesManager {
+ method public android.os.CpuUsageInfo[] getCpuUsages();
+ method public float[] getDeviceTemperatures(int);
+ method public float[] getFanSpeeds();
+ field public static final int DEVICE_TEMPERATURE_BATTERY = 2; // 0x2
+ field public static final int DEVICE_TEMPERATURE_CPU = 0; // 0x0
+ field public static final int DEVICE_TEMPERATURE_GPU = 1; // 0x1
+ }
+
+ public static abstract class HardwarePropertiesManager.DeviceTemperatureType implements java.lang.annotation.Annotation {
+ }
+
public abstract interface IBinder {
method public abstract void dump(java.io.FileDescriptor, java.lang.String[]) throws android.os.RemoteException;
method public abstract void dumpAsync(java.io.FileDescriptor, java.lang.String[]) throws android.os.RemoteException;
diff --git a/api/system-current.txt b/api/system-current.txt
index 6a36ce0..ab7b19b 100644
--- a/api/system-current.txt
+++ b/api/system-current.txt
@@ -8222,6 +8222,7 @@
field public static final java.lang.String DOWNLOAD_SERVICE = "download";
field public static final java.lang.String DROPBOX_SERVICE = "dropbox";
field public static final java.lang.String FINGERPRINT_SERVICE = "fingerprint";
+ field public static final java.lang.String HARDWARE_PROPERTIES_SERVICE = "hardwareproperties";
field public static final java.lang.String HDMI_CONTROL_SERVICE = "hdmi_control";
field public static final java.lang.String INPUT_METHOD_SERVICE = "input_method";
field public static final java.lang.String INPUT_SERVICE = "input";
@@ -29638,6 +29639,14 @@
method public final synchronized android.os.CountDownTimer start();
}
+ public final class CpuUsageInfo implements android.os.Parcelable {
+ method public int describeContents();
+ method public long getActive();
+ method public long getTotal();
+ method public void writeToParcel(android.os.Parcel, int);
+ field public static final android.os.Parcelable.Creator<android.os.CpuUsageInfo> CREATOR;
+ }
+
public class DeadObjectException extends android.os.RemoteException {
ctor public DeadObjectException();
ctor public DeadObjectException(java.lang.String);
@@ -29890,6 +29899,18 @@
method public boolean quitSafely();
}
+ public class HardwarePropertiesManager {
+ method public android.os.CpuUsageInfo[] getCpuUsages();
+ method public float[] getDeviceTemperatures(int);
+ method public float[] getFanSpeeds();
+ field public static final int DEVICE_TEMPERATURE_BATTERY = 2; // 0x2
+ field public static final int DEVICE_TEMPERATURE_CPU = 0; // 0x0
+ field public static final int DEVICE_TEMPERATURE_GPU = 1; // 0x1
+ }
+
+ public static abstract class HardwarePropertiesManager.DeviceTemperatureType implements java.lang.annotation.Annotation {
+ }
+
public abstract interface IBinder {
method public abstract void dump(java.io.FileDescriptor, java.lang.String[]) throws android.os.RemoteException;
method public abstract void dumpAsync(java.io.FileDescriptor, java.lang.String[]) throws android.os.RemoteException;
diff --git a/api/test-current.txt b/api/test-current.txt
index 21b101f..daab1b3 100644
--- a/api/test-current.txt
+++ b/api/test-current.txt
@@ -7976,6 +7976,7 @@
field public static final java.lang.String DOWNLOAD_SERVICE = "download";
field public static final java.lang.String DROPBOX_SERVICE = "dropbox";
field public static final java.lang.String FINGERPRINT_SERVICE = "fingerprint";
+ field public static final java.lang.String HARDWARE_PROPERTIES_SERVICE = "hardwareproperties";
field public static final java.lang.String INPUT_METHOD_SERVICE = "input_method";
field public static final java.lang.String INPUT_SERVICE = "input";
field public static final java.lang.String JOB_SCHEDULER_SERVICE = "jobscheduler";
@@ -27654,6 +27655,14 @@
method public final synchronized android.os.CountDownTimer start();
}
+ public final class CpuUsageInfo implements android.os.Parcelable {
+ method public int describeContents();
+ method public long getActive();
+ method public long getTotal();
+ method public void writeToParcel(android.os.Parcel, int);
+ field public static final android.os.Parcelable.Creator<android.os.CpuUsageInfo> CREATOR;
+ }
+
public class DeadObjectException extends android.os.RemoteException {
ctor public DeadObjectException();
ctor public DeadObjectException(java.lang.String);
@@ -27906,6 +27915,18 @@
method public boolean quitSafely();
}
+ public class HardwarePropertiesManager {
+ method public android.os.CpuUsageInfo[] getCpuUsages();
+ method public float[] getDeviceTemperatures(int);
+ method public float[] getFanSpeeds();
+ field public static final int DEVICE_TEMPERATURE_BATTERY = 2; // 0x2
+ field public static final int DEVICE_TEMPERATURE_CPU = 0; // 0x0
+ field public static final int DEVICE_TEMPERATURE_GPU = 1; // 0x1
+ }
+
+ public static abstract class HardwarePropertiesManager.DeviceTemperatureType implements java.lang.annotation.Annotation {
+ }
+
public abstract interface IBinder {
method public abstract void dump(java.io.FileDescriptor, java.lang.String[]) throws android.os.RemoteException;
method public abstract void dumpAsync(java.io.FileDescriptor, java.lang.String[]) throws android.os.RemoteException;
diff --git a/core/java/android/app/SystemServiceRegistry.java b/core/java/android/app/SystemServiceRegistry.java
index 89d52f2..ea8d6bd 100644
--- a/core/java/android/app/SystemServiceRegistry.java
+++ b/core/java/android/app/SystemServiceRegistry.java
@@ -85,6 +85,7 @@
import android.nfc.NfcManager;
import android.os.BatteryManager;
import android.os.DropBoxManager;
+import android.os.HardwarePropertiesManager;
import android.os.IBinder;
import android.os.IPowerManager;
import android.os.IUserManager;
@@ -704,6 +705,12 @@
public RadioManager createService(ContextImpl ctx) {
return new RadioManager(ctx);
}});
+ registerService(Context.HARDWARE_PROPERTIES_SERVICE, HardwarePropertiesManager.class,
+ new CachedServiceFetcher<HardwarePropertiesManager>() {
+ @Override
+ public HardwarePropertiesManager createService(ContextImpl ctx) {
+ return new HardwarePropertiesManager();
+ }});
}
/**
diff --git a/core/java/android/content/Context.java b/core/java/android/content/Context.java
index 84f6f3d..a245706 100644
--- a/core/java/android/content/Context.java
+++ b/core/java/android/content/Context.java
@@ -48,6 +48,7 @@
import android.os.Bundle;
import android.os.Environment;
import android.os.Handler;
+import android.os.HardwarePropertiesManager;
import android.os.IBinder;
import android.os.Looper;
import android.os.StatFs;
@@ -2601,6 +2602,7 @@
MEDIA_PROJECTION_SERVICE,
MIDI_SERVICE,
RADIO_SERVICE,
+ HARDWARE_PROPERTIES_SERVICE,
})
@Retention(RetentionPolicy.SOURCE)
public @interface ServiceName {}
@@ -2662,6 +2664,8 @@
* <dt> {@link #NETWORK_STATS_SERVICE} ("netstats")
* <dd> A {@link android.app.usage.NetworkStatsManager NetworkStatsManager} for querying network
* usage statistics.
+ * <dt> {@link #HARDWARE_PROPERTIES_SERVICE} ("hardwareproperties")
+ * <dd> A {@link android.os.HardwarePropertiesManager} for accessing hardware properties.
* </dl>
*
* <p>Note: System services obtained via this API may be closely associated with
@@ -2723,6 +2727,8 @@
* @see android.app.job.JobScheduler
* @see #NETWORK_STATS_SERVICE
* @see android.app.usage.NetworkStatsManager
+ * @see android.os.HardwarePropertiesManager
+ * @see #HARDWARE_PROPERTIES_SERVICE
*/
public abstract Object getSystemService(@ServiceName @NonNull String name);
@@ -3465,6 +3471,14 @@
public static final String RADIO_SERVICE = "radio";
/**
+ * Use with {@link #getSystemService} to retrieve a
+ * {@link android.os.HardwarePropertiesManager} for accessing the hardware properties service.
+ *
+ * @see #getSystemService
+ */
+ public static final String HARDWARE_PROPERTIES_SERVICE = "hardwareproperties";
+
+ /**
* Determine whether the given permission is allowed for a particular
* process and user ID running in the system.
*
diff --git a/core/java/android/os/CpuUsageInfo.java b/core/java/android/os/CpuUsageInfo.java
new file mode 100644
index 0000000..54caa15
--- /dev/null
+++ b/core/java/android/os/CpuUsageInfo.java
@@ -0,0 +1,81 @@
+/*
+ * Copyright (C) 2015 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.
+ */
+
+package android.os;
+
+/**
+ * CPU usage information per core.
+ */
+public final class CpuUsageInfo implements Parcelable {
+ private long mActive;
+ private long mTotal;
+
+ public static final Parcelable.Creator<CpuUsageInfo> CREATOR = new
+ Parcelable.Creator<CpuUsageInfo>() {
+ public CpuUsageInfo createFromParcel(Parcel in) {
+ return new CpuUsageInfo(in);
+ }
+
+ public CpuUsageInfo[] newArray(int size) {
+ return new CpuUsageInfo[size];
+ }
+ };
+
+ /** @hide */
+ public CpuUsageInfo(long activeTime, long totalTime) {
+ mActive = activeTime;
+ mTotal = totalTime;
+ }
+
+ private CpuUsageInfo(Parcel in) {
+ readFromParcel(in);
+ }
+
+ /**
+ * Gets the active time in milliseconds since the system last booted.
+ *
+ * @return Active time in milliseconds.
+ */
+ public long getActive() {
+ return mActive;
+ }
+
+ /**
+ * Gets the total time in milliseconds that the CPU has been enabled since the system last
+ * booted. This includes time the CPU spent idle.
+ *
+ * @return Total time in milliseconds.
+ */
+ public long getTotal() {
+ return mTotal;
+ }
+
+ @Override
+ public int describeContents() {
+ return 0;
+ }
+
+ @Override
+ public void writeToParcel(Parcel out, int flags) {
+ out.writeLong(mActive);
+ out.writeLong(mTotal);
+ }
+
+ private void readFromParcel(Parcel in) {
+ mActive = in.readLong();
+ mTotal = in.readLong();
+ }
+}
diff --git a/core/java/android/os/HardwarePropertiesManager.java b/core/java/android/os/HardwarePropertiesManager.java
new file mode 100644
index 0000000..bc317b6
--- /dev/null
+++ b/core/java/android/os/HardwarePropertiesManager.java
@@ -0,0 +1,102 @@
+/*
+ * Copyright (C) 2015 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.
+ */
+package android.os;
+
+import android.annotation.IntDef;
+import android.annotation.NonNull;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+
+
+/**
+ * The HardwarePropertiesManager class provides a mechanism of accessing hardware state of a
+ * device: CPU, GPU and battery temperatures, CPU usage per core, fan speed, etc.
+ */
+public class HardwarePropertiesManager {
+
+ private static final String TAG = HardwarePropertiesManager.class.getSimpleName();
+
+ private static native void nativeInit();
+
+ private static native float[] nativeGetFanSpeeds();
+ private static native float[] nativeGetDeviceTemperatures(int type);
+ private static native CpuUsageInfo[] nativeGetCpuUsages();
+
+ @Retention(RetentionPolicy.SOURCE)
+ @IntDef({
+ DEVICE_TEMPERATURE_CPU, DEVICE_TEMPERATURE_GPU, DEVICE_TEMPERATURE_BATTERY
+ })
+ public @interface DeviceTemperatureType {}
+
+ /**
+ * Device temperature types. These must match the values in
+ * frameworks/native/include/hardwareproperties/HardwarePropertiesManager.h
+ */
+ /** Temperature of CPUs in Celsius. */
+ public static final int DEVICE_TEMPERATURE_CPU = 0;
+
+ /** Temperature of GPUs in Celsius. */
+ public static final int DEVICE_TEMPERATURE_GPU = 1;
+
+ /** Temperature of battery in Celsius. */
+ public static final int DEVICE_TEMPERATURE_BATTERY = 2;
+
+ /** @hide */
+ public HardwarePropertiesManager() {
+ nativeInit();
+ }
+
+ /**
+ * Return an array of device temperatures in Celsius.
+ *
+ * @param type type of requested device temperature, one of {@link #DEVICE_TEMPERATURE_CPU},
+ * {@link #DEVICE_TEMPERATURE_GPU} or {@link #DEVICE_TEMPERATURE_BATTERY}.
+ * @return an array of requested float device temperatures.
+ * Empty if platform doesn't provide the queried temperature.
+ *
+ * @throws IllegalArgumentException if an incorrect temperature type is queried.
+ */
+ public @NonNull float[] getDeviceTemperatures(@DeviceTemperatureType int type) {
+ switch (type) {
+ case DEVICE_TEMPERATURE_CPU:
+ case DEVICE_TEMPERATURE_GPU:
+ case DEVICE_TEMPERATURE_BATTERY:
+ return nativeGetDeviceTemperatures(type);
+ default:
+ throw new IllegalArgumentException();
+ }
+ }
+
+ /**
+ * Return an array of CPU usage info for each core.
+ *
+ * @return an array of {@link android.os.CpuUsageInfo} for each core.
+ * Empty if CPU usage is not supported on this system.
+ */
+ public @NonNull CpuUsageInfo[] getCpuUsages() {
+ return nativeGetCpuUsages();
+ }
+
+ /**
+ * Return an array of fan speeds in RPM.
+ *
+ * @return an arrat of float fan speeds. Empty if there is no fans or fan speed
+ * not supported on this system.
+ */
+ public @NonNull float[] getFanSpeeds() {
+ return nativeGetFanSpeeds();
+ }
+}
diff --git a/core/jni/Android.mk b/core/jni/Android.mk
index fc1ba44..6e968ee 100644
--- a/core/jni/Android.mk
+++ b/core/jni/Android.mk
@@ -175,7 +175,8 @@
com_android_internal_net_NetworkStatsFactory.cpp \
com_android_internal_os_Zygote.cpp \
com_android_internal_util_VirtualRefBasePtr.cpp \
- com_android_internal_view_animation_NativeInterpolatorFactoryHelper.cpp
+ com_android_internal_view_animation_NativeInterpolatorFactoryHelper.cpp \
+ android_os_HardwarePropertiesManager.cpp
LOCAL_C_INCLUDES += \
$(JNI_H_INCLUDE) \
diff --git a/core/jni/AndroidRuntime.cpp b/core/jni/AndroidRuntime.cpp
index 63f193d..fa1ccdb 100644
--- a/core/jni/AndroidRuntime.cpp
+++ b/core/jni/AndroidRuntime.cpp
@@ -196,6 +196,7 @@
extern int register_com_android_internal_net_NetworkStatsFactory(JNIEnv *env);
extern int register_com_android_internal_os_Zygote(JNIEnv *env);
extern int register_com_android_internal_util_VirtualRefBasePtr(JNIEnv *env);
+extern int register_android_os_HardwarePropertiesManager(JNIEnv *env);
static AndroidRuntime* gCurRuntime = NULL;
@@ -1380,7 +1381,7 @@
REG_JNI(register_android_animation_PropertyValuesHolder),
REG_JNI(register_com_android_internal_content_NativeLibraryHelper),
REG_JNI(register_com_android_internal_net_NetworkStatsFactory),
-
+ REG_JNI(register_android_os_HardwarePropertiesManager),
};
diff --git a/core/jni/android_os_HardwarePropertiesManager.cpp b/core/jni/android_os_HardwarePropertiesManager.cpp
new file mode 100644
index 0000000..dc1ba48
--- /dev/null
+++ b/core/jni/android_os_HardwarePropertiesManager.cpp
@@ -0,0 +1,164 @@
+/*
+ * Copyright (C) 2015 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 "HardwarePropertiesManager-JNI"
+
+#include "JNIHelp.h"
+#include "jni.h"
+
+#include <stdlib.h>
+
+#include <hardware/hardware_properties.h>
+#include <utils/Log.h>
+#include <utils/String8.h>
+
+#include <hardware_properties/HardwarePropertiesManager.h>
+
+#include "core_jni_helpers.h"
+
+namespace android {
+
+// ---------------------------------------------------------------------------
+
+static struct {
+ jclass clazz;
+ jmethodID initMethod;
+} gCpuUsageInfoClassInfo;
+
+static struct hardware_properties_module* gHardwarePropertiesModule;
+
+// ----------------------------------------------------------------------------
+
+static void nativeInit(JNIEnv* env, jobject obj) {
+ status_t err = hw_get_module(HARDWARE_PROPERTIES_HARDWARE_MODULE_ID,
+ (hw_module_t const**)&gHardwarePropertiesModule);
+ if (err) {
+ ALOGE("Couldn't load %s module (%s)", HARDWARE_PROPERTIES_HARDWARE_MODULE_ID,
+ strerror(-err));
+ }
+}
+
+static jfloatArray nativeGetFanSpeeds(JNIEnv *env, jclass /* clazz */) {
+ if (gHardwarePropertiesModule && gHardwarePropertiesModule->getFanSpeeds) {
+ float *speeds = nullptr;
+ ssize_t size = gHardwarePropertiesModule->getFanSpeeds(gHardwarePropertiesModule, &speeds);
+
+ if (speeds && size > 0) {
+ jfloatArray fanSpeeds = env->NewFloatArray(size);
+ env->SetFloatArrayRegion(fanSpeeds, 0, size, speeds);
+ free(speeds);
+ return fanSpeeds;
+ }
+
+ if (size < 0) {
+ ALOGE("Cloudn't get fan speeds because of HAL error");
+ }
+ }
+ return env->NewFloatArray(0);
+}
+
+static jfloatArray nativeGetDeviceTemperatures(JNIEnv *env, jclass /* clazz */, int type) {
+ if (gHardwarePropertiesModule) {
+ ssize_t size = 0;
+ float *temps = nullptr;
+ switch (type) {
+ case DEVICE_TEMPERATURE_CPU:
+ if (gHardwarePropertiesModule->getCpuTemperatures) {
+ size = gHardwarePropertiesModule->getCpuTemperatures(gHardwarePropertiesModule,
+ &temps);
+ }
+ break;
+ case DEVICE_TEMPERATURE_GPU:
+ if (gHardwarePropertiesModule->getGpuTemperatures) {
+ size = gHardwarePropertiesModule->getGpuTemperatures(gHardwarePropertiesModule,
+ &temps);
+ }
+ break;
+ case DEVICE_TEMPERATURE_BATTERY:
+ if (gHardwarePropertiesModule->getBatteryTemperatures) {
+ size = gHardwarePropertiesModule->getBatteryTemperatures(gHardwarePropertiesModule,
+ &temps);
+ }
+ break;
+ }
+ if (temps && size > 0) {
+ jfloatArray deviceTemps = env->NewFloatArray(size);
+ env->SetFloatArrayRegion(deviceTemps, 0, size, temps);
+ free(temps);
+ return deviceTemps;
+ }
+ if (size < 0) {
+ ALOGE("Couldn't get device temperatures type=%d because of HAL error", type);
+ }
+ }
+ return env->NewFloatArray(0);
+}
+
+static jobjectArray nativeGetCpuUsages(JNIEnv *env, jclass /* clazz */) {
+ if (gHardwarePropertiesModule && gHardwarePropertiesModule->getCpuUsages
+ && gCpuUsageInfoClassInfo.initMethod) {
+ int64_t *active_times = nullptr;
+ int64_t *total_times = nullptr;
+ ssize_t size = gHardwarePropertiesModule->getCpuUsages(gHardwarePropertiesModule,
+ &active_times, &total_times);
+ if (active_times && total_times && size > 0) {
+ jobjectArray cpuUsages = env->NewObjectArray(size, gCpuUsageInfoClassInfo.clazz,
+ nullptr);
+ for (ssize_t i = 0; i < size; ++i) {
+ jobject cpuUsage = env->NewObject(gCpuUsageInfoClassInfo.clazz,
+ gCpuUsageInfoClassInfo.initMethod,
+ active_times[i], total_times[i]);
+ env->SetObjectArrayElement(cpuUsages, i, cpuUsage);
+ }
+ free(active_times);
+ free(total_times);
+ return cpuUsages;
+ }
+
+ if (size < 0) {
+ ALOGE("Couldn't get CPU usages because of HAL error");
+ }
+ }
+ return env->NewObjectArray(0, gCpuUsageInfoClassInfo.clazz, nullptr);
+}
+
+// ----------------------------------------------------------------------------
+
+static const JNINativeMethod gHardwarePropertiesManagerMethods[] = {
+ /* name, signature, funcPtr */
+ { "nativeInit", "()V",
+ (void*) nativeInit },
+ { "nativeGetFanSpeeds", "()[F",
+ (void*) nativeGetFanSpeeds },
+ { "nativeGetDeviceTemperatures", "(I)[F",
+ (void*) nativeGetDeviceTemperatures },
+ { "nativeGetCpuUsages", "()[Landroid/os/CpuUsageInfo;",
+ (void*) nativeGetCpuUsages }
+};
+
+int register_android_os_HardwarePropertiesManager(JNIEnv* env) {
+ gHardwarePropertiesModule = nullptr;
+ int res = jniRegisterNativeMethods(env, "android/os/HardwarePropertiesManager",
+ gHardwarePropertiesManagerMethods,
+ NELEM(gHardwarePropertiesManagerMethods));
+ jclass clazz = env->FindClass("android/os/CpuUsageInfo");
+ gCpuUsageInfoClassInfo.clazz = MakeGlobalRefOrDie(env, clazz);
+ gCpuUsageInfoClassInfo.initMethod = GetMethodIDOrDie(env, gCpuUsageInfoClassInfo.clazz,
+ "<init>", "(JJ)V");
+ return res;
+}
+
+} /* namespace android */