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Reading five minutes, ten o'clock daily, lifelong learning with you, here is the Android programmer
This article describes the Android
part of the development of knowledge by reading this article, you will reap the following:
1.ShutdownThread Overview
2.shutdown shutdown method
3.shutdownInner way to achieve
4.CloseDialogReceiver registered shutdown dialog box broadcast
5.new sConfirmDialog display the shutdown dialog
6.beginShutdownSequence start the shutdown process
7.showShutdownDialog show off progress dialog
8. determine whether SystemUIReboot
9. start off thread, execute the Run method
10.shutdownRadios Close Radio implement
11.rebootOrShutdown initialization and decided to shut down or reboot
12. The shutdown log analysis
1.ShutdownThread Overview
Shutdown thread implementation class
Android
Shutdown thread implementation classframeworks/base/services/core/java/com/android/server/power/ShutdownThread.java
ShutdownThread general process
ShutdownThread part of the static variables are as follows:
public final class ShutdownThread extends Thread {
// constants
private static final String TAG = "ShutdownThread";
private static final int ACTION_DONE_POLL_WAIT_MS = 500;
private static final int RADIOS_STATE_POLL_SLEEP_MS = 100;
// maximum time we wait for the shutdown broadcast before going on.
private static final int MAX_BROADCAST_TIME = 10*1000;
private static final int MAX_SHUTDOWN_WAIT_TIME = 20*1000;
private static final int MAX_RADIO_WAIT_TIME = 12*1000;
private static final int MAX_UNCRYPT_WAIT_TIME = 15*60*1000;
// constants for progress bar. the values are roughly estimated based on timeout.
private static final int BROADCAST_STOP_PERCENT = 2;
private static final int ACTIVITY_MANAGER_STOP_PERCENT = 4;
private static final int PACKAGE_MANAGER_STOP_PERCENT = 6;
private static final int RADIO_STOP_PERCENT = 18;
private static final int MOUNT_SERVICE_STOP_PERCENT = 20;
// Time we should wait for vendor subsystem shutdown
// Sleep times(ms) between checks of the vendor subsystem state
private static final int VENDOR_SUBSYS_STATE_CHECK_INTERVAL_MS = 100;
// Max time we wait for vendor subsystems to shut down before resuming
// with full system shutdown
private static final int VENDOR_SUBSYS_MAX_WAIT_MS = 10000;
// length of vibration before shutting down
private static final int SHUTDOWN_VIBRATE_MS = 500;
... ...
}
ShutdownThread constructor with no arguments
private ShutdownThread() {
}
2. shutdown shutdown method
· Power · Press the key to call shutdown
method, by calling an internal shutdownInner
method to achieve pop shutdown, restart dialog box for users to choose shutdown or restart.
/**
* Request a clean shutdown, waiting for subsystems to clean up their
* state etc. Must be called from a Looper thread in which its UI
* is shown.
*
* @param context Context used to display the shutdown progress dialog. This must be a context
* suitable for displaying UI (aka Themable).
* @param reason code to pass to android_reboot() (e.g. "userrequested"), or null.
* @param confirm true if user confirmation is needed before shutting down.
*/
public static void shutdown(final Context context, String reason, boolean confirm) {
mReboot = false;
mRebootSafeMode = false;
mReason = reason;
shutdownInner(context, confirm); // 详见分析3
}
3.shutdownInner way to achieve
shutdownInner
The main role is to
1. Get the user off Behavior
.
2. Register shutdown broadcast, see 4.
3. Create shutdown Dialog
.
4. Perform a series of shutdown processes.
private static void shutdownInner(final Context context, boolean confirm) {
// ShutdownThread is called from many places, so best to verify here that the context passed
// in is themed.
context.assertRuntimeOverlayThemable();
// ensure that only one thread is trying to power down.
// any additional calls are just returned
synchronized (sIsStartedGuard) {
if (sIsStarted) {
Log.d(TAG, "Request to shutdown already running, returning.");
return;
}
}
// 获取用户长按Power键的处理行为
final int longPressBehavior = context.getResources().getInteger(
com.android.internal.R.integer.config_longPressOnPowerBehavior);
final int resourceId = mRebootSafeMode
? com.android.internal.R.string.reboot_safemode_confirm
: (longPressBehavior == 2
? com.android.internal.R.string.shutdown_confirm_question
: com.android.internal.R.string.shutdown_confirm);
Log.d(TAG, "Notifying thread to start shutdown longPressBehavior=" + longPressBehavior);
if (confirm) {
//注册关机对话框广播 详细实现见 4
final CloseDialogReceiver closer = new CloseDialogReceiver(context);
if (sConfirmDialog != null) {
sConfirmDialog.dismiss();
}
// 创建关机Dialg 详见 实现5
sConfirmDialog = new AlertDialog.Builder(context)
.setTitle(mRebootSafeMode
? com.android.internal.R.string.reboot_safemode_title
: com.android.internal.R.string.power_off)
.setMessage(resourceId)
.setPositiveButton(com.android.internal.R.string.yes, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
// 开始一系列的关机流程,详见 6
beginShutdownSequence(context);
}
})
.setNegativeButton(com.android.internal.R.string.no, null)
.create();
closer.dialog = sConfirmDialog;
sConfirmDialog.setOnDismissListener(closer);
sConfirmDialog.getWindow().setType(WindowManager.LayoutParams.TYPE_KEYGUARD_DIALOG);
sConfirmDialog.show();
} else {
beginShutdownSequence(context);
}
}
Which config_longPressOnPowerBehavior
is used to control user presses Power
the behavior of key trigger.
The main behavior is as follows:
<!-- Control the behavior when the user long presses the power button.
0 - Nothing
1 - Global actions menu
2 - Power off (with confirmation)
3 - Power off (without confirmation)
4 - Go to voice assist
-->
<integer name="config_longPressOnPowerBehavior">1</integer>
This source can config.xml
see, the code directory is as follows:frameworks\base\core\res\res\values\config.xml
4.CloseDialogReceiver registered shutdown dialog box broadcast
Registration action
for the ACTION_CLOSE_SYSTEM_DIALOGS
broadcast receiver.
private static class CloseDialogReceiver extends BroadcastReceiver
implements DialogInterface.OnDismissListener {
private Context mContext;
public Dialog dialog;
CloseDialogReceiver(Context context) {
mContext = context;
IntentFilter filter = new IntentFilter(Intent.ACTION_CLOSE_SYSTEM_DIALOGS);
context.registerReceiver(this, filter);
}
@Override
public void onReceive(Context context, Intent intent) {
dialog.cancel();
}
public void onDismiss(DialogInterface unused) {
mContext.unregisterReceiver(this);
}
}
5. new sConfirmDialog shutdown dialog box display
Android
Native shutdown dialog box as follows:
// 创建关机Dialg 详见 实现5
sConfirmDialog = new AlertDialog.Builder(context)
.setTitle(mRebootSafeMode
? com.android.internal.R.string.reboot_safemode_title
: com.android.internal.R.string.power_off)
.setMessage(resourceId)
.setPositiveButton(com.android.internal.R.string.yes, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
// 开始一系列的关机流程,详见 6
beginShutdownSequence(context);
}
})
.setNegativeButton(com.android.internal.R.string.no, null)
.create();
closer.dialog = sConfirmDialog;
sConfirmDialog.setOnDismissListener(closer);
sConfirmDialog.getWindow().setType(WindowManager.LayoutParams.TYPE_KEYGUARD_DIALOG);
sConfirmDialog.show();
6. beginShutdownSequence start the shutdown process
beginShutdownSequence
Start off a series of processes, the main functions are as follows:
1. Display Shutdown progress bar dialog.
2. Start ShutdownThead
thread.
private static void beginShutdownSequence(Context context) {
synchronized (sIsStartedGuard) {
if (sIsStarted) {
Log.d(TAG, "Shutdown sequence already running, returning.");
return;
}
sIsStarted = true;
}
// 显示关机进度对话框 详见 7
sInstance.mProgressDialog = showShutdownDialog(context);
sInstance.mContext = context;
sInstance.mPowerManager = (PowerManager)context.getSystemService(Context.POWER_SERVICE);
// make sure we never fall asleep again
sInstance.mCpuWakeLock = null;
try {
sInstance.mCpuWakeLock = sInstance.mPowerManager.newWakeLock(
PowerManager.PARTIAL_WAKE_LOCK, TAG + "-cpu");
sInstance.mCpuWakeLock.setReferenceCounted(false);
sInstance.mCpuWakeLock.acquire();
} catch (SecurityException e) {
Log.w(TAG, "No permission to acquire wake lock", e);
sInstance.mCpuWakeLock = null;
}
// also make sure the screen stays on for better user experience
sInstance.mScreenWakeLock = null;
if (sInstance.mPowerManager.isScreenOn()) {
try {
sInstance.mScreenWakeLock = sInstance.mPowerManager.newWakeLock(
PowerManager.FULL_WAKE_LOCK, TAG + "-screen");
sInstance.mScreenWakeLock.setReferenceCounted(false);
sInstance.mScreenWakeLock.acquire();
} catch (SecurityException e) {
Log.w(TAG, "No permission to acquire wake lock", e);
sInstance.mScreenWakeLock = null;
}
}
if (SecurityLog.isLoggingEnabled()) {
SecurityLog.writeEvent(SecurityLog.TAG_OS_SHUTDOWN);
}
// 启动 关机线程 ,执行 Run 方法,详见 9
sInstance.mHandler = new Handler() {
};
sInstance.start();
}
7.showShutdownDialog show off progress dialog
showShutdownDialog
Mainly used to show off the progress dialog
private static ProgressDialog showShutdownDialog(Context context) {
// Throw up a system dialog to indicate the device is rebooting / shutting down.
ProgressDialog pd = new ProgressDialog(context);
// Path 1: Reboot to recovery for update
// Condition: mReason startswith REBOOT_RECOVERY_UPDATE
//
// Path 1a: uncrypt needed
// Condition: if /cache/recovery/uncrypt_file exists but
// /cache/recovery/block.map doesn't.
// UI: determinate progress bar (mRebootHasProgressBar == True)
//
// * Path 1a is expected to be removed once the GmsCore shipped on
// device always calls uncrypt prior to reboot.
//
// Path 1b: uncrypt already done
// UI: spinning circle only (no progress bar)
//
// Path 2: Reboot to recovery for factory reset
// Condition: mReason == REBOOT_RECOVERY
// UI: spinning circle only (no progress bar)
//
// Path 3: Regular reboot / shutdown
// Condition: Otherwise
// UI: spinning circle only (no progress bar)
// mReason could be "recovery-update" or "recovery-update,quiescent".
if (mReason != null && mReason.startsWith(PowerManager.REBOOT_RECOVERY_UPDATE)) {
// We need the progress bar if uncrypt will be invoked during the
// reboot, which might be time-consuming.
mRebootHasProgressBar = RecoverySystem.UNCRYPT_PACKAGE_FILE.exists()
&& !(RecoverySystem.BLOCK_MAP_FILE.exists());
pd.setTitle(context.getText(com.android.internal.R.string.reboot_to_update_title));
if (mRebootHasProgressBar) {
pd.setMax(100);
pd.setProgress(0);
pd.setIndeterminate(false);
pd.setProgressNumberFormat(null);
pd.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
pd.setMessage(context.getText(
com.android.internal.R.string.reboot_to_update_prepare));
} else {
if (showSysuiReboot()) {
return null;
}
pd.setIndeterminate(true);
pd.setMessage(context.getText(
com.android.internal.R.string.reboot_to_update_reboot));
}
} else if (mReason != null && mReason.equals(PowerManager.REBOOT_RECOVERY)) {
if (RescueParty.isAttemptingFactoryReset()) {
// We're not actually doing a factory reset yet; we're rebooting
// to ask the user if they'd like to reset, so give them a less
// scary dialog message.
pd.setTitle(context.getText(com.android.internal.R.string.power_off));
pd.setMessage(context.getText(com.android.internal.R.string.shutdown_progress));
pd.setIndeterminate(true);
} else {
// Factory reset path. Set the dialog message accordingly.
pd.setTitle(context.getText(com.android.internal.R.string.reboot_to_reset_title));
pd.setMessage(context.getText(
com.android.internal.R.string.reboot_to_reset_message));
pd.setIndeterminate(true);
}
} else {
// 判断是否显示SystemUIReboot 详见 8
if (showSysuiReboot()) {
return null;
}
// 显示关机 进度对话框 详见 8
pd.setTitle(context.getText(com.android.internal.R.string.power_off));
pd.setMessage(context.getText(com.android.internal.R.string.shutdown_progress));
pd.setIndeterminate(true);
}
pd.setCancelable(false);
pd.getWindow().setType(WindowManager.LayoutParams.TYPE_KEYGUARD_DIALOG);
pd.show();
return pd;
}
Shutdown achieve progress dialog
8. determines whether SystemUIReboot
showSysuiReboot
Mainly used to show whether the display SystemUIReboot
.
private static boolean showSysuiReboot() {
Log.d(TAG, "Attempting to use SysUI shutdown UI");
try {
StatusBarManagerInternal service = LocalServices.getService(
StatusBarManagerInternal.class);
if (service.showShutdownUi(mReboot, mReason)) {
// Sysui will handle shutdown UI.
Log.d(TAG, "SysUI handling shutdown UI");
return true;
}
} catch (Exception e) {
// If anything went wrong, ignore it and use fallback ui
}
Log.d(TAG, "SysUI is unavailable");
return false;
}
9. Start off thread, execute the Run method
In beginShutdownSequence
starting off the thread method.
private static void beginShutdownSequence(Context context) {
... ...
// static instance of this thread
private static final ShutdownThread sInstance = new ShutdownThread();
// start the thread that initiates shutdown
sInstance.mHandler = new Handler() {
};
sInstance.start();
... ...
}
ShutdownThread Run realization
ShutdownThread
Main functions:
1. Send an orderly shutdown broadcast.
2. Measure the closing time of some projects.
3. Close ActivityManager
.
4. Close PackageManager
.
5. Close Radios
.
6. complete System Server
closure.
7. initialization and determines the shutdown or restart
/**
* Makes sure we handle the shutdown gracefully.
* Shuts off power regardless of radio state if the allotted time has passed.
*/
public void run() {
TimingsTraceLog shutdownTimingLog = newTimingsLog();
shutdownTimingLog.traceBegin("SystemServerShutdown");
metricShutdownStart();
metricStarted(METRIC_SYSTEM_SERVER);
BroadcastReceiver br = new BroadcastReceiver() {
@Override public void onReceive(Context context, Intent intent) {
// We don't allow apps to cancel this, so ignore the result.
actionDone();
}
};
/*
* Write a system property in case the system_server reboots before we
* get to the actual hardware restart. If that happens, we'll retry at
* the beginning of the SystemServer startup.
*/
{
String reason = (mReboot ? "1" : "0") + (mReason != null ? mReason : "");
SystemProperties.set(SHUTDOWN_ACTION_PROPERTY, reason);
}
/*
* If we are rebooting into safe mode, write a system property
* indicating so.
*/
if (mRebootSafeMode) {
SystemProperties.set(REBOOT_SAFEMODE_PROPERTY, "1");
}
metricStarted(METRIC_SEND_BROADCAST);
shutdownTimingLog.traceBegin("SendShutdownBroadcast");
Log.i(TAG, "Sending shutdown broadcast...");
// First send the high-level shut down broadcast.
mActionDone = false;
Intent intent = new Intent(Intent.ACTION_SHUTDOWN);
intent.addFlags(Intent.FLAG_RECEIVER_FOREGROUND | Intent.FLAG_RECEIVER_REGISTERED_ONLY);
// 发送 有序的 关机广播
mContext.sendOrderedBroadcastAsUser(intent,
UserHandle.ALL, null, br, mHandler, 0, null, null);
final long endTime = SystemClock.elapsedRealtime() + MAX_BROADCAST_TIME;
synchronized (mActionDoneSync) {
while (!mActionDone) {
long delay = endTime - SystemClock.elapsedRealtime();
if (delay <= 0) {
Log.w(TAG, "Shutdown broadcast timed out");
break;
} else if (mRebootHasProgressBar) {
int status = (int)((MAX_BROADCAST_TIME - delay) * 1.0 *
BROADCAST_STOP_PERCENT / MAX_BROADCAST_TIME);
sInstance.setRebootProgress(status, null);
}
try {
mActionDoneSync.wait(Math.min(delay, ACTION_DONE_POLL_WAIT_MS));
} catch (InterruptedException e) {
}
}
}
if (mRebootHasProgressBar) {
sInstance.setRebootProgress(BROADCAST_STOP_PERCENT, null);
}
// 测量 发送有序 关机广播所用的时间
shutdownTimingLog.traceEnd(); // SendShutdownBroadcast
metricEnded(METRIC_SEND_BROADCAST);
Log.i(TAG, "Shutting down activity manager...");
shutdownTimingLog.traceBegin("ShutdownActivityManager");
metricStarted(METRIC_AM);
// 关闭 Activity Manager
final IActivityManager am =
IActivityManager.Stub.asInterface(ServiceManager.checkService("activity"));
if (am != null) {
try {
am.shutdown(MAX_BROADCAST_TIME);
} catch (RemoteException e) {
}
}
if (mRebootHasProgressBar) {
sInstance.setRebootProgress(ACTIVITY_MANAGER_STOP_PERCENT, null);
}
shutdownTimingLog.traceEnd();// ShutdownActivityManager
metricEnded(METRIC_AM);
Log.i(TAG, "Shutting down package manager...");
shutdownTimingLog.traceBegin("ShutdownPackageManager");
metricStarted(METRIC_PM);
// 关闭 Package Manager
final PackageManagerService pm = (PackageManagerService)
ServiceManager.getService("package");
if (pm != null) {
pm.shutdown();
}
if (mRebootHasProgressBar) {
sInstance.setRebootProgress(PACKAGE_MANAGER_STOP_PERCENT, null);
}
shutdownTimingLog.traceEnd(); // ShutdownPackageManager
metricEnded(METRIC_PM);
// Shutdown radios.
shutdownTimingLog.traceBegin("ShutdownRadios");
metricStarted(METRIC_RADIOS);
//关闭 Radios shutdownRadios 详细 请看 10
shutdownRadios(MAX_RADIO_WAIT_TIME);
if (mRebootHasProgressBar) {
sInstance.setRebootProgress(RADIO_STOP_PERCENT, null);
}
shutdownTimingLog.traceEnd(); // ShutdownRadios
metricEnded(METRIC_RADIOS);
// 关闭 System Server
if (mRebootHasProgressBar) {
sInstance.setRebootProgress(MOUNT_SERVICE_STOP_PERCENT, null);
// If it's to reboot to install an update and uncrypt hasn't been
// done yet, trigger it now.
uncrypt();
}
shutdownTimingLog.traceEnd(); // SystemServerShutdown
metricEnded(METRIC_SYSTEM_SERVER);
saveMetrics(mReboot, mReason);
//初始化 并判断是关机还是重启 详见 11
rebootOrShutdown(mContext, mReboot, mReason);
}
10.shutdownRadios Close Radio realization
shutdownRadios
Close to phone Radio
related content, mainly to achieve the following:
private void shutdownRadios(final int timeout) {
// If a radio is wedged, disabling it may hang so we do this work in another thread,
// just in case.
final long endTime = SystemClock.elapsedRealtime() + timeout;
final boolean[] done = new boolean[1];
//另起线程 异步关闭 Radios
Thread t = new Thread() {
public void run() {
TimingsTraceLog shutdownTimingsTraceLog = newTimingsLog();
boolean radioOff;
final ITelephony phone =
ITelephony.Stub.asInterface(ServiceManager.checkService("phone"));
try {
radioOff = phone == null || !phone.needMobileRadioShutdown();
if (!radioOff) {
Log.w(TAG, "Turning off cellular radios...");
metricStarted(METRIC_RADIO);
phone.shutdownMobileRadios();
}
} catch (RemoteException ex) {
Log.e(TAG, "RemoteException during radio shutdown", ex);
radioOff = true;
}
Log.i(TAG, "Waiting for Radio...");
long delay = endTime - SystemClock.elapsedRealtime();
while (delay > 0) {
if (mRebootHasProgressBar) {
int status = (int)((timeout - delay) * 1.0 *
(RADIO_STOP_PERCENT - PACKAGE_MANAGER_STOP_PERCENT) / timeout);
status += PACKAGE_MANAGER_STOP_PERCENT;
sInstance.setRebootProgress(status, null);
}
if (!radioOff) {
try {
radioOff = !phone.needMobileRadioShutdown();
} catch (RemoteException ex) {
Log.e(TAG, "RemoteException during radio shutdown", ex);
radioOff = true;
}
if (radioOff) {
Log.i(TAG, "Radio turned off.");
metricEnded(METRIC_RADIO);
shutdownTimingsTraceLog
.logDuration("ShutdownRadio", TRON_METRICS.get(METRIC_RADIO));
}
}
if (radioOff) {
Log.i(TAG, "Radio shutdown complete.");
done[0] = true;
break;
}
SystemClock.sleep(RADIOS_STATE_POLL_SLEEP_MS);
delay = endTime - SystemClock.elapsedRealtime();
}
}
};
//另起线程 异步关闭 Radios
t.start();
try {
t.join(timeout);
} catch (InterruptedException ex) {
}
if (!done[0]) {
Log.w(TAG, "Timed out waiting for Radio shutdown.");
}
}
11.rebootOrShutdown initialization and decided to shut down or reboot
rebootOrShutdown
Mainly used to initialize and decided to shut down or restart.
/**
* Do not call this directly. Use {@link #reboot(Context, String, boolean)}
* or {@link #shutdown(Context, String, boolean)} instead.
*
* @param context Context used to vibrate or null without vibration
* @param reboot true to reboot or false to shutdown
* @param reason reason for reboot/shutdown
*/
public static void rebootOrShutdown(final Context context, boolean reboot, String reason) {
String subsysProp;
subsysProp = SystemProperties.get("vendor.peripheral.shutdown_critical_list",
"ERROR");
//If we don't have the shutdown critical subsystem list we can't
//really do anything. Proceed with full system shutdown.
if (!subsysProp.equals("ERROR")) {
Log.i(TAG, "Shutdown critical subsyslist is :"+subsysProp+": ");
Log.i(TAG, "Waiting for a maximum of " +
(VENDOR_SUBSYS_MAX_WAIT_MS) + "ms");
String[] subsysList = subsysProp.split(" ");
int wait_count = 0;
boolean okToShutdown = true;
String subsysState;
int subsysListLength = subsysList.length;
do {
okToShutdown = true;
for (int i = 0; i < subsysListLength; i++) {
subsysState =
SystemProperties.get(
"vendor.peripheral." +
subsysList[i] +
".state",
"ERROR");
if(subsysState.equals("ONLINE")) {
//We only want to delay shutdown while
//one of the shutdown critical
//subsystems still shows as 'ONLINE'.
okToShutdown = false;
}
}
if (okToShutdown == false) {
SystemClock.sleep(VENDOR_SUBSYS_STATE_CHECK_INTERVAL_MS);
wait_count++;
}
} while (okToShutdown != true &&
wait_count < (VENDOR_SUBSYS_MAX_WAIT_MS/VENDOR_SUBSYS_STATE_CHECK_INTERVAL_MS));
if (okToShutdown != true) {
for (int i = 0; i < subsysList.length; i++) {
subsysState =
SystemProperties.get(
"vendor.peripheral." +
subsysList[i] +
".state",
"ERROR");
if(subsysState.equals("ONLINE")) {
Log.w(TAG, "Subsystem " + subsysList[i]+
"did not shut down within timeout");
}
}
} else {
Log.i(TAG, "Vendor subsystem(s) shutdown successful");
}
}
if (reboot) {
Log.i(TAG, "Rebooting, reason: " + reason);
PowerManagerService.lowLevelReboot(reason);
Log.e(TAG, "Reboot failed, will attempt shutdown instead");
reason = null;
} else if (SHUTDOWN_VIBRATE_MS > 0 && context != null) {
// vibrate before shutting down
Vibrator vibrator = new SystemVibrator(context);
try {
vibrator.vibrate(SHUTDOWN_VIBRATE_MS, VIBRATION_ATTRIBUTES);
} catch (Exception e) {
// Failure to vibrate shouldn't interrupt shutdown. Just log it.
Log.w(TAG, "Failed to vibrate during shutdown.", e);
}
// vibrator is asynchronous so we need to wait to avoid shutting down too soon.
try {
Thread.sleep(SHUTDOWN_VIBRATE_MS);
} catch (InterruptedException unused) {
}
}
// Shutdown power
Log.i(TAG, "Performing low-level shutdown...");
PowerManagerService.lowLevelShutdown(reason);
}
12. Shutdown log analysis
By link adb
, we can grab shutdown Log
, part of the Log
information is as follows:
Line 96: 07-26 01:02:26.205 2510 3766 I AudioController: internalShutdown
Line 540: 07-26 01:02:30.968 790 790 D ShutdownThread: Notifying thread to start shutdown longPressBehavior=1
Line 540: 07-26 01:02:30.968 790 790 D ShutdownThread: Notifying thread to start shutdown longPressBehavior=1
Line 541: 07-26 01:02:30.970 790 790 D ShutdownThread: Attempting to use SysUI shutdown UI
Line 541: 07-26 01:02:30.970 790 790 D ShutdownThread: Attempting to use SysUI shutdown UI
Line 542: 07-26 01:02:30.971 790 790 D ShutdownThread: SysUI handling shutdown UI
Line 542: 07-26 01:02:30.971 790 790 D ShutdownThread: SysUI handling shutdown UI
Line 555: 07-26 01:02:30.997 790 3902 I ShutdownThread: Sending shutdown broadcast...
Line 555: 07-26 01:02:30.997 790 3902 I ShutdownThread: Sending shutdown broadcast...
Line 561: 07-26 01:02:31.014 790 790 W SyncManager: Writing sync state before shutdown...
Line 666: 07-26 01:02:31.436 2510 3766 I AudioController: internalShutdown
Line 669: 07-26 01:02:31.443 790 790 I StatsCompanionService: StatsCompanionService noticed a shutdown.
Line 708: 07-26 01:02:31.671 790 3902 D ShutdownTiming: SendShutdownBroadcast took to complete: 675ms
Line 708: 07-26 01:02:31.671 790 3902 D ShutdownTiming: SendShutdownBroadcast took to complete: 675ms
Line 711: 07-26 01:02:31.671 790 3902 I ShutdownThread: Shutting down activity manager...
Line 740: 07-26 01:02:31.954 790 3902 W AppOps : Writing app ops before shutdown...
Line 771: 07-26 01:02:32.152 790 3902 W BatteryStats: Writing battery stats before shutdown...
Line 806: 07-26 01:02:32.386 790 1015 W system_server: Long monitor contention with owner Thread-29 (3902) at void com.android.server.am.BatteryStatsService.shutdown()(BatteryStatsService.java:249) waiters=0 in void com.android.server.am.BatteryStatsService.noteProcessStart(java.lang.String, int) for 132ms
Line 840: 07-26 01:02:32.507 790 3902 W ProcessStatsService: Writing process stats before shutdown...
Line 850: 07-26 01:02:32.563 790 3902 D ShutdownTiming: ShutdownActivityManager took to complete: 891ms
Line 850: 07-26 01:02:32.563 790 3902 D ShutdownTiming: ShutdownActivityManager took to complete: 891ms
Line 853: 07-26 01:02:32.563 790 3902 I ShutdownThread: Shutting down package manager...
Line 872: 07-26 01:02:32.656 790 3902 D ShutdownTiming: ShutdownPackageManager took to complete: 93ms
Line 872: 07-26 01:02:32.656 790 3902 D ShutdownTiming: ShutdownPackageManager took to complete: 93ms
Line 879: 07-26 01:02:32.677 1804 1976 V PhoneInterfaceManager: [PhoneIntfMgr] 1 Phones are shutdown.
Line 882: 07-26 01:02:32.678 790 3951 I ShutdownThread: Waiting for Radio...
Line 883: 07-26 01:02:32.679 790 3951 I ShutdownThread: Radio shutdown complete.
Line 883: 07-26 01:02:32.679 790 3951 I ShutdownThread: Radio shutdown complete.
Line 884: 07-26 01:02:32.681 790 3902 D ShutdownTiming: ShutdownRadios took to complete: 25ms
Line 884: 07-26 01:02:32.681 790 3902 D ShutdownTiming: ShutdownRadios took to complete: 25ms
Line 885: 07-26 01:02:32.681 790 3902 D ShutdownTiming: SystemServerShutdown took to complete: 1705ms
Line 885: 07-26 01:02:32.681 790 3902 D ShutdownTiming: SystemServerShutdown took to complete: 1705ms
Line 886: 07-26 01:02:32.684 790 3902 I ShutdownThread: Shutdown critical subsyslist is :modem :
Line 886: 07-26 01:02:32.684 790 3902 I ShutdownThread: Shutdown critical subsyslist is :modem :
Line 887: 07-26 01:02:32.684 790 3902 I ShutdownThread: Waiting for a maximum of 10000ms
Line 888: 07-26 01:02:32.684 790 3902 I ShutdownThread: Vendor subsystem(s) shutdown successful
Line 888: 07-26 01:02:32.684 790 3902 I ShutdownThread: Vendor subsystem(s) shutdown successful
Line 931: 07-26 01:02:33.192 790 3902 I ShutdownThread: Performing low-level shutdown...
Line 931: 07-26 01:02:33.192 790 3902 I ShutdownThread: Performing low-level shutdown...
Line 1003: 07-26 01:02:33.543 565 585 E Dpps : ProcessAlMsg():471 Shutdown event recieved quit -108
Line 1005: 07-26 01:02:33.543 565 585 I Dpps : ProcessNextEvent():142 Shutdown notification quit processing
Line 1009: 07-26 01:02:33.562 565 583 E Dpps : ProcessAbaMsg():579 Shutdown event recieved quit -108
So far herein, this has ended, if the wrong place, welcome your suggestions and corrections. At the same time look forward to your attention, thank you for reading, thank you!