Android 开机Process xxx (pid xxxx) has died问题分析
前言
准备面试其实已经准备了挺久了,当时打算面试准备了差不多以后,跟公司谈谈涨薪的事情,谈不拢的话,就年后直接找其他的公司。谁想到婚假还没休完,老板就在公司宣布了撤出上海的决定,愿意去深圳的就去,不愿意的就自己找工作,给了一个多月的时间找工作,就没有赔偿了,反正公司也没钱。悲哀….
幸好提前准备过,不过都是断断续续的今天看点这个,明天看点那个,三天打鱼两天晒网的,也没用心去准备.这下好了,直接到了最差的地步了,没办法,用心准备吧。
08-12 16:48:40.453 773 908 D ActivityManager: SVC-mBroadcastQueues: com.android.server.am.BroadcastQueue@29a50ece
Log出处：
frameworks/base/services/core/java/com/android/server/am/ActivityManagerService.java
final void appDiedLocked(ProcessRecord app, int pid, IApplicationThread thread) {
// First check if this ProcessRecord is actually active for the pid.
synchronized (mPidsSelfLocked) {
ProcessRecord curProc = mPidsSelfLocked.get(pid);
if (curProc != app) {
Slog.w(TAG, "Spurious death for " + app + ", curProc for " + pid + ": " + curProc);
return;
}
}
BatteryStatsImpl stats = mBatteryStatsService.getActiveStatistics();
synchronized (stats) {
stats.noteProcessDiedLocked(app.info.uid, pid);
}
if (!app.killed) {
Process.killProcessQuiet(pid);
Process.killProcessGroup(app.uid, pid);
app.killed = true;
}
// Clean up already done if the process has been re-started.
if (app.pid == pid && app.thread != null &&
app.thread.asBinder() == thread.asBinder()) {
boolean doLowMem = app.instrumentationClass == null;
boolean doOomAdj = doLowMem;
if (!app.killedByAm) {
Slog.i(TAG, "Process " + app.processName + " (pid " + pid
- “) has died”);
mAllowLowerMemLevel = true;
} else {
// Note that we always want to do oom adj to update our state with the
// new number of procs.
mAllowLowerMemLevel = false;
doLowMem = false;
}
EventLog.writeEvent(EventLogTags.AM_PROC_DIED, app.userId, app.pid, app.processName);
if (DEBUG_CLEANUP) Slog.v(
TAG, "Dying app: " + app + ", pid: " + pid
- ", thread: " + thread.asBinder());
handleAppDiedLocked(app, false, true);
if (doOomAdj) {
updateOomAdjLocked();
}
if (doLowMem) {
doLowMemReportIfNeededLocked(app);
}
} else if (app.pid != pid) {
// A new process has already been started.
Slog.i(TAG, "Process " + app.processName + " (pid " + pid
- ") has died and restarted (pid " + app.pid + “).”);
EventLog.writeEvent(EventLogTags.AM_PROC_DIED, app.userId, app.pid, app.processName);
} else if (DEBUG_PROCESSES) {
Slog.d(TAG, "Received spurious death notification for thread "
- thread.asBinder());
}
}
可以看到app.killedByAm = false，也就是说不是ActivityManager主动kill该应用，而是LowMemory的原因(for RAM)。
ProcessRecord里属性：
private final BatteryStatsImpl mBatteryStats; // where to collect runtime statistics
final ApplicationInfo info; // all about the first app in the process
final boolean isolated; // true if this is a special isolated process
final int uid; // uid of process; may be different from ‘info’ if isolated
final int userId; // user of process.
final String processName; // name of the process
// List of packages running in the process
final ArrayMap
= new ArrayMap
ArraySet pkgDeps; // additional packages we have a dependency on
IApplicationThread thread; // the actual proc… may be null only if
// ‘persistent’ is true (in which case we
// are in the process of launching the app)
ProcessStats.ProcessState baseProcessTracker;
BatteryStatsImpl.Uid.Proc curProcBatteryStats;
int pid; // The process of this application; 0 if none
int[] gids; // The gids this process was launched with
String requiredAbi; // The ABI this process was launched with
String instructionSet; // The instruction set this process was launched with
boolean starting; // True if the process is being started
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