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Adding a new adb command for getting the current foreground process

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Bug: b/239699054
Test: manual

Change-Id: I4959f1fb969243fe493ff968fdfce4ac13cf0f08
This commit is contained in:
Kunal Malhotra
2022-08-12 19:46:07 +00:00
parent 29705980bc
commit 7b45d79105
1 changed files with 80 additions and 0 deletions
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80
services/core/java/com/android/server/am/ActivityManagerShellCommand.java
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@@ -49,10 +49,12 @@ import android.app.BroadcastOptions;
import android.app.IActivityController;
import android.app.IActivityManager;
import android.app.IActivityTaskManager;
import android.app.IProcessObserver;
import android.app.IStopUserCallback;
import android.app.IUidObserver;
import android.app.IUserSwitchObserver;
import android.app.KeyguardManager;
import android.app.ProcessStateEnum;
import android.app.ProfilerInfo;
import android.app.RemoteServiceException.CrashedByAdbException;
import android.app.UserSwitchObserver;
@@ -359,6 +361,8 @@ final class ActivityManagerShellCommand extends ShellCommand {
return runSetBgRestrictionLevel(pw);
case "get-bg-restriction-level":
return runGetBgRestrictionLevel(pw);
case "observe-foreground-process":
return runGetCurrentForegroundProcess(pw, mInternal, mTaskInterface);
default:
return handleDefaultCommands(cmd);
}
@@ -3208,6 +3212,82 @@ final class ActivityManagerShellCommand extends ShellCommand {
return -1;
}
private int runGetCurrentForegroundProcess(PrintWriter pw,
IActivityManager iam, IActivityTaskManager iatm)
throws RemoteException {
ProcessObserver observer = new ProcessObserver(pw, iam, iatm, mInternal);
iam.registerProcessObserver(observer);
final InputStream mInput = getRawInputStream();
InputStreamReader converter = new InputStreamReader(mInput);
BufferedReader in = new BufferedReader(converter);
String line;
try {
while ((line = in.readLine()) != null) {
boolean addNewline = true;
if (line.length() <= 0) {
addNewline = false;
} else if ("q".equals(line) || "quit".equals(line)) {
break;
} else {
pw.println("Invalid command: " + line);
}
if (addNewline) {
pw.println("");
}
pw.flush();
}
} catch (IOException e) {
e.printStackTrace();
pw.flush();
} finally {
iam.unregisterProcessObserver(observer);
}
return 0;
}
static final class ProcessObserver extends IProcessObserver.Stub {
private PrintWriter mPw;
private IActivityManager mIam;
private IActivityTaskManager mIatm;
private ActivityManagerService mInternal;
ProcessObserver(PrintWriter mPw, IActivityManager mIam,
IActivityTaskManager mIatm, ActivityManagerService ams) {
this.mPw = mPw;
this.mIam = mIam;
this.mIatm = mIatm;
this.mInternal = ams;
}
@Override
public void onForegroundActivitiesChanged(int pid, int uid, boolean foregroundActivities) {
if (foregroundActivities) {
try {
int prcState = mIam.getUidProcessState(uid, "android");
int topPid = mInternal.getTopApp().getPid();
if (prcState == ProcessStateEnum.TOP && topPid == pid) {
mPw.println("New foreground process: " + pid);
}
mPw.flush();
} catch (RemoteException e) {
mPw.println("Error occurred in binder call");
mPw.flush();
}
}
}
@Override
public void onForegroundServicesChanged(int pid, int uid, int serviceTypes) {
}
@Override
public void onProcessDied(int pid, int uid) {
}
}
private int runSetMemoryFactor(PrintWriter pw) throws RemoteException {
final String levelArg = getNextArgRequired();
@MemFactor int level = ADJ_MEM_FACTOR_NOTHING;