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Commit 1c0bc075 authored by Yisroel Forta's avatar Yisroel Forta
Browse files

Add zygote fork timestamp to AppStartInfo 

This works out to be slightly before forCommon (~3ms in local testing) which is accuarate enough.

Test: trigger start, confirm timestamp added
Bug: 287153617
Flag: android.app.app_start_info_timestamps
Change-Id: If21ee2da9bf5a55cacac357029625a45d3e733c1
parent f35573ce

services/core/java/com/android/server/am/ProcessList.java

+7 −0
Original line number Diff line number Diff line
@@ -73,6 +73,7 @@ import android.app.AppProtoEnums; 
import android.app.ApplicationExitInfo;

import android.app.ApplicationExitInfo.Reason;

import android.app.ApplicationExitInfo.SubReason;

import android.app.ApplicationStartInfo;

import android.app.IApplicationThread;

import android.app.IProcessObserver;

import android.app.UidObserver;
@@ -2479,6 +2480,7 @@ public final class ProcessList { 
            boolean regularZygote = false;

            app.mProcessGroupCreated = false;

            app.mSkipProcessGroupCreation = false;

            long forkTimeNs = SystemClock.uptimeNanos();

            if (hostingRecord.usesWebviewZygote()) {

                startResult = startWebView(entryPoint,

                        app.processName, uid, uid, gids, runtimeFlags, mountExternal,
@@ -2512,6 +2514,11 @@ public final class ProcessList { 
                app.mProcessGroupCreated = true;

            }



            if (android.app.Flags.appStartInfoTimestamps()) {

                mAppStartInfoTracker.addTimestampToStart(app, forkTimeNs,

                        ApplicationStartInfo.START_TIMESTAMP_FORK);

            }



            if (!regularZygote) {

                // webview and app zygote don't have the permission to create the nodes

                synchronized (app) {