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-rw-r--r--api/current.txt1
-rw-r--r--api/system-current.txt1
-rw-r--r--api/test-current.txt1
-rw-r--r--core/java/android/app/Activity.java20
-rw-r--r--core/java/android/app/IActivityManager.aidl2
-rw-r--r--services/core/java/com/android/server/am/ActivityManagerService.java9
-rw-r--r--services/core/java/com/android/server/am/ActivityRecord.java8
-rw-r--r--services/core/java/com/android/server/am/ActivityStarter.java6
8 files changed, 48 insertions, 0 deletions
diff --git a/api/current.txt b/api/current.txt
index 8754d21b14ac..d90d34fccff6 100644
--- a/api/current.txt
+++ b/api/current.txt
@@ -3615,6 +3615,7 @@ package android.app {
method public android.net.Uri getReferrer();
method public int getRequestedOrientation();
method public final android.view.SearchEvent getSearchEvent();
+ method public long getStartInitiatedTime();
method public int getTaskId();
method public final java.lang.CharSequence getTitle();
method public final int getTitleColor();
diff --git a/api/system-current.txt b/api/system-current.txt
index fd176d0f8a7f..19c2f4dd7565 100644
--- a/api/system-current.txt
+++ b/api/system-current.txt
@@ -3743,6 +3743,7 @@ package android.app {
method public android.net.Uri getReferrer();
method public int getRequestedOrientation();
method public final android.view.SearchEvent getSearchEvent();
+ method public long getStartInitiatedTime();
method public int getTaskId();
method public final java.lang.CharSequence getTitle();
method public final int getTitleColor();
diff --git a/api/test-current.txt b/api/test-current.txt
index 5e87ab981ced..671e24edeca0 100644
--- a/api/test-current.txt
+++ b/api/test-current.txt
@@ -3617,6 +3617,7 @@ package android.app {
method public android.net.Uri getReferrer();
method public int getRequestedOrientation();
method public final android.view.SearchEvent getSearchEvent();
+ method public long getStartInitiatedTime();
method public int getTaskId();
method public final java.lang.CharSequence getTitle();
method public final int getTitleColor();
diff --git a/core/java/android/app/Activity.java b/core/java/android/app/Activity.java
index 950991b75546..b36a1600bae5 100644
--- a/core/java/android/app/Activity.java
+++ b/core/java/android/app/Activity.java
@@ -18,6 +18,7 @@ package android.app;
import android.metrics.LogMaker;
import android.graphics.Rect;
+import android.os.SystemClock;
import android.view.ViewRootImpl.ActivityConfigCallback;
import android.view.autofill.AutofillId;
import android.view.autofill.AutofillManager;
@@ -7433,6 +7434,25 @@ public class Activity extends ContextThemeWrapper
}
}
+ /**
+ * Return the timestamp at which this activity start was last initiated by the system in the
+ * {@link SystemClock#uptimeMillis()} time base.
+ *
+ * This can be used to understand how much time is taken for an activity to be started and
+ * displayed to the user.
+ *
+ * @return timestamp at which this activity start was initiated by the system
+ * or {@code 0} if for any reason the timestamp could not be retrieved.
+ */
+ public long getStartInitiatedTime() {
+ try {
+ return ActivityManager.getService().getActivityStartInitiatedTime(mToken);
+ } catch (RemoteException e) {
+ Log.e(TAG, "Failed to call getActivityStartTime", e);
+ return 0;
+ }
+ }
+
class HostCallbacks extends FragmentHostCallback<Activity> {
public HostCallbacks() {
super(Activity.this /*activity*/);
diff --git a/core/java/android/app/IActivityManager.aidl b/core/java/android/app/IActivityManager.aidl
index fc827a946a44..4210d2e7d3ec 100644
--- a/core/java/android/app/IActivityManager.aidl
+++ b/core/java/android/app/IActivityManager.aidl
@@ -632,6 +632,8 @@ interface IActivityManager {
*/
void backgroundWhitelistUid(int uid);
+ long getActivityStartInitiatedTime(IBinder token);
+
// WARNING: when these transactions are updated, check if they are any callers on the native
// side. If so, make sure they are using the correct transaction ids and arguments.
// If a transaction which will also be used on the native side is being inserted, add it
diff --git a/services/core/java/com/android/server/am/ActivityManagerService.java b/services/core/java/com/android/server/am/ActivityManagerService.java
index 2be53136bb74..6b0a73b25e71 100644
--- a/services/core/java/com/android/server/am/ActivityManagerService.java
+++ b/services/core/java/com/android/server/am/ActivityManagerService.java
@@ -23885,6 +23885,15 @@ public class ActivityManagerService extends IActivityManager.Stub
}
}
+ @Override
+ public long getActivityStartInitiatedTime(IBinder token) {
+ final ActivityRecord r = ActivityRecord.forTokenLocked(token);
+ if (r != null) {
+ return r.mStartInitiatedTimeMs;
+ }
+ return 0;
+ }
+
void updateApplicationInfoLocked(@NonNull List<String> packagesToUpdate, int userId) {
final PackageManagerInternal packageManager = getPackageManagerInternalLocked();
final boolean updateFrameworkRes = packagesToUpdate.contains("android");
diff --git a/services/core/java/com/android/server/am/ActivityRecord.java b/services/core/java/com/android/server/am/ActivityRecord.java
index 276b267edb5b..17c7dde11726 100644
--- a/services/core/java/com/android/server/am/ActivityRecord.java
+++ b/services/core/java/com/android/server/am/ActivityRecord.java
@@ -341,6 +341,12 @@ final class ActivityRecord extends ConfigurationContainer implements AppWindowCo
private final Rect mBounds = new Rect();
/**
+ * Denotes the timestamp at which this activity start was last initiated in the
+ * {@link SystemClock#uptimeMillis()} time base.
+ */
+ long mStartInitiatedTimeMs;
+
+ /**
* Temp configs used in {@link #ensureActivityConfigurationLocked(int, boolean)}
*/
private final Configuration mTmpConfig1 = new Configuration();
@@ -498,6 +504,8 @@ final class ActivityRecord extends ConfigurationContainer implements AppWindowCo
pw.print(" forceNewConfig="); pw.println(forceNewConfig);
pw.print(prefix); pw.print("mActivityType=");
pw.println(activityTypeToString(mActivityType));
+ pw.print(prefix); pw.print("mStartInitiatedTimeMs=");
+ TimeUtils.formatDuration(mStartInitiatedTimeMs, now, pw);
if (requestedVrComponent != null) {
pw.print(prefix);
pw.print("requestedVrComponent=");
diff --git a/services/core/java/com/android/server/am/ActivityStarter.java b/services/core/java/com/android/server/am/ActivityStarter.java
index 56594d3fdf48..8f1c20330e53 100644
--- a/services/core/java/com/android/server/am/ActivityStarter.java
+++ b/services/core/java/com/android/server/am/ActivityStarter.java
@@ -244,6 +244,7 @@ class ActivityStarter {
ActivityOptions options, boolean ignoreTargetSecurity, boolean componentSpecified,
ActivityRecord[] outActivity, ActivityStackSupervisor.ActivityContainer container,
TaskRecord inTask) {
+ final long activityStartTime = SystemClock.uptimeMillis();
int err = ActivityManager.START_SUCCESS;
ProcessRecord callerApp = null;
@@ -478,6 +479,7 @@ class ActivityStarter {
callingPackage, intent, resolvedType, aInfo, mService.getGlobalConfiguration(),
resultRecord, resultWho, requestCode, componentSpecified, voiceSession != null,
mSupervisor, container, options, sourceRecord);
+ r.mStartInitiatedTimeMs = activityStartTime;
if (outActivity != null) {
outActivity[0] = r;
}
@@ -1029,6 +1031,7 @@ class ActivityStarter {
// so make sure the task now has the identity of the new intent.
top.getTask().setIntent(mStartActivity);
}
+ top.mStartInitiatedTimeMs = mStartActivity.mStartInitiatedTimeMs;
ActivityStack.logStartActivity(AM_NEW_INTENT, mStartActivity, top.getTask());
top.deliverNewIntentLocked(mCallingUid, mStartActivity.intent,
mStartActivity.launchedFromPackage);
@@ -1052,6 +1055,7 @@ class ActivityStarter {
setTaskFromIntentActivity(reusedActivity);
if (!mAddingToTask && mReuseTask == null) {
+ reusedActivity.mStartInitiatedTimeMs = mStartActivity.mStartInitiatedTimeMs;
// We didn't do anything... but it was needed (a.k.a., client don't use that
// intent!) And for paranoia, make sure we have correctly resumed the top activity.
resumeTargetStackIfNeeded();
@@ -1084,6 +1088,7 @@ class ActivityStarter {
|| mLaunchSingleTop || mLaunchSingleTask);
if (dontStart) {
ActivityStack.logStartActivity(AM_NEW_INTENT, top, top.getTask());
+ top.mStartInitiatedTimeMs = mStartActivity.mStartInitiatedTimeMs;
// For paranoia, make sure we have correctly resumed the top activity.
topStack.mLastPausedActivity = null;
if (mDoResume) {
@@ -1664,6 +1669,7 @@ class ActivityStarter {
// desires.
if (((mLaunchFlags & FLAG_ACTIVITY_SINGLE_TOP) != 0 || mLaunchSingleTop)
&& intentActivity.realActivity.equals(mStartActivity.realActivity)) {
+ intentActivity.mStartInitiatedTimeMs = mStartActivity.mStartInitiatedTimeMs;
ActivityStack.logStartActivity(AM_NEW_INTENT, mStartActivity,
intentActivity.getTask());
if (intentActivity.frontOfTask) {
generated by cgit v1.2.3-59-g8ed1b (git 2.39.0) at 2025-11-03 09:40:39 +0000