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author | Bryce Lee <brycelee@google.com> | 2015-09-25 16:43:01 -0700 |
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committer | Bryce Lee <brycelee@google.com> | 2015-09-25 16:43:01 -0700 |
commit | bc58f59da6226c6f1d240c95d566186f679fc310 (patch) | |
tree | 778b861c7bf3544cdca8b07baec17bd3f46f5d7a | |
parent | 184440cea399d2332b5dc138a9e8a47e9cde3398 (diff) | |
download | frameworks_base-bc58f59da6226c6f1d240c95d566186f679fc310.zip frameworks_base-bc58f59da6226c6f1d240c95d566186f679fc310.tar.gz frameworks_base-bc58f59da6226c6f1d240c95d566186f679fc310.tar.bz2 |
Add ThermalObserver system service to capture thermal state uevents.
Bug: 21445745
Change-Id: I980d60b66ca51942a1fd62502d6cf1f09208fc3a
-rw-r--r-- | core/java/android/content/Intent.java | 33 | ||||
-rw-r--r-- | core/res/AndroidManifest.xml | 1 | ||||
-rw-r--r-- | services/core/java/com/android/server/ThermalObserver.java | 146 | ||||
-rw-r--r-- | services/java/com/android/server/SystemServer.java | 5 |
4 files changed, 185 insertions, 0 deletions
diff --git a/core/java/android/content/Intent.java b/core/java/android/content/Intent.java index 12c2632..6bbee56 100644 --- a/core/java/android/content/Intent.java +++ b/core/java/android/content/Intent.java @@ -3022,6 +3022,39 @@ public class Intent implements Parcelable, Cloneable { public static final String EXTRA_PROCESS_TEXT_READONLY = "android.intent.extra.PROCESS_TEXT_READONLY"; + /** + * Broadcast action: reports when a new thermal event has been reached. When the device + * is reaching its maximum temperatue, the thermal level reported + * {@hide} + */ + @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION) + public static final String ACTION_THERMAL_EVENT = "android.intent.action.THERMAL_EVENT"; + + /** {@hide} */ + public static final String EXTRA_THERMAL_STATE = "android.intent.extra.THERMAL_STATE"; + + /** + * Thermal state when the device is normal. This state is sent in the + * {@link ACTION_THERMAL_EVENT} broadcast as {@link EXTRA_THERMAL_STATE}. + * {@hide} + */ + public static final int EXTRA_THERMAL_STATE_NORMAL = 0; + + /** + * Thermal state where the device is approaching its maximum threshold. This state is sent in + * the {@link ACTION_THERMAL_EVENT} broadcast as {@link EXTRA_THERMAL_STATE}. + * {@hide} + */ + public static final int EXTRA_THERMAL_STATE_WARNING = 1; + + /** + * Thermal state where the device has reached its maximum threshold. This state is sent in the + * {@link ACTION_THERMAL_EVENT} broadcast as {@link EXTRA_THERMAL_STATE}. + * {@hide} + */ + public static final int EXTRA_THERMAL_STATE_EXCEEDED = 2; + + // --------------------------------------------------------------------- // --------------------------------------------------------------------- // Standard intent categories (see addCategory()). diff --git a/core/res/AndroidManifest.xml b/core/res/AndroidManifest.xml index b051de4..0f46983 100644 --- a/core/res/AndroidManifest.xml +++ b/core/res/AndroidManifest.xml @@ -65,6 +65,7 @@ <protected-broadcast android:name="android.intent.action.NEW_OUTGOING_CALL" /> <protected-broadcast android:name="android.intent.action.REBOOT" /> <protected-broadcast android:name="android.intent.action.DOCK_EVENT" /> + <protected-broadcast android:name="android.intent.action.THERMAL_EVENT" /> <protected-broadcast android:name="android.intent.action.MASTER_CLEAR_NOTIFICATION" /> <protected-broadcast android:name="android.intent.action.USER_ADDED" /> <protected-broadcast android:name="android.intent.action.USER_REMOVED" /> diff --git a/services/core/java/com/android/server/ThermalObserver.java b/services/core/java/com/android/server/ThermalObserver.java new file mode 100644 index 0000000..aee28fb --- /dev/null +++ b/services/core/java/com/android/server/ThermalObserver.java @@ -0,0 +1,146 @@ +/* + * 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 com.android.server; + +import android.content.Context; +import android.content.Intent; +import android.content.pm.PackageManager; +import android.os.Binder; +import android.os.Handler; +import android.os.Message; +import android.os.PowerManager; +import android.os.UEventObserver; +import android.os.UserHandle; + +import java.io.FileDescriptor; +import java.io.PrintWriter; + +/** + * ThermalObserver for monitoring temperature changes. + */ +public class ThermalObserver extends SystemService { + private static final String TAG = "ThermalObserver"; + + private static final String CALLSTATE_UEVENT_MATCH = + "DEVPATH=/devices/virtual/switch/thermalstate"; + + private static final int MSG_THERMAL_STATE_CHANGED = 0; + + private static final int SWITCH_STATE_NORMAL = 0; + private static final int SWITCH_STATE_WARNING = 1; + private static final int SWITCH_STATE_EXCEEDED = 2; + + private final PowerManager mPowerManager; + private final PowerManager.WakeLock mWakeLock; + + private final Object mLock = new Object(); + private Integer mLastState; + + private final UEventObserver mThermalWarningObserver = new UEventObserver() { + @Override + public void onUEvent(UEventObserver.UEvent event) { + updateLocked(Integer.parseInt(event.get("SWITCH_STATE"))); + } + }; + + private final Handler mHandler = new Handler(true /*async*/) { + @Override + public void handleMessage(Message msg) { + switch (msg.what) { + case MSG_THERMAL_STATE_CHANGED: + handleThermalStateChange(msg.arg1); + mWakeLock.release(); + break; + } + } + }; + + public ThermalObserver(Context context) { + super(context); + mPowerManager = (PowerManager)context.getSystemService(Context.POWER_SERVICE); + mWakeLock = mPowerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); + + mThermalWarningObserver.startObserving(CALLSTATE_UEVENT_MATCH); + } + + private void updateLocked(int state) { + Message message = new Message(); + message.what = MSG_THERMAL_STATE_CHANGED; + message.arg1 = state; + + mWakeLock.acquire(); + mHandler.sendMessage(message); + } + + private void handleThermalStateChange(int state) { + synchronized (mLock) { + mLastState = state; + Intent intent = new Intent(Intent.ACTION_THERMAL_EVENT); + intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); + + final int thermalState; + + switch (state) { + case SWITCH_STATE_WARNING: + thermalState = Intent.EXTRA_THERMAL_STATE_WARNING; + break; + case SWITCH_STATE_EXCEEDED: + thermalState = Intent.EXTRA_THERMAL_STATE_EXCEEDED; + break; + case SWITCH_STATE_NORMAL: + default: + thermalState = Intent.EXTRA_THERMAL_STATE_NORMAL; + break; + } + + intent.putExtra(Intent.EXTRA_THERMAL_STATE, thermalState); + + getContext().sendBroadcastAsUser(intent, UserHandle.ALL); + } + } + + @Override + public void onStart() { + publishBinderService(TAG, new BinderService()); + } + + private final class BinderService extends Binder { + @Override + protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { + if (getContext().checkCallingOrSelfPermission(android.Manifest.permission.DUMP) + != PackageManager.PERMISSION_GRANTED) { + pw.println("Permission Denial: can't dump thermal observer service from from pid=" + + Binder.getCallingPid() + + ", uid=" + Binder.getCallingUid()); + return; + } + + final long ident = Binder.clearCallingIdentity(); + try { + synchronized (mLock) { + if (args == null || args.length == 0 || "-a".equals(args[0])) { + pw.println("Current Thermal Observer Service state:"); + pw.println(" last state change: " + + (mLastState != null ? mLastState : "none")); + } + } + } finally { + Binder.restoreCallingIdentity(ident); + } + } + } +} diff --git a/services/java/com/android/server/SystemServer.java b/services/java/com/android/server/SystemServer.java index 3effe63..08816b9 100644 --- a/services/java/com/android/server/SystemServer.java +++ b/services/java/com/android/server/SystemServer.java @@ -825,6 +825,11 @@ public final class SystemServer { if (!disableNonCoreServices) { mSystemServiceManager.startService(DockObserver.class); + + if (context.getPackageManager().hasSystemFeature + (PackageManager.FEATURE_WATCH)) { + mSystemServiceManager.startService(ThermalObserver.class); + } } try { |