commit ca3329ccb50e896b60072f73af41612de7115426
author Philip Cuadra <philipcuadra@google.com> Fri Jun 24 12:02:06 2016 -0700
committer Philip Cuadra <philipcuadra@google.com> Fri Jun 24 12:02:06 2016 -0700
tree c04e7d4b9a0b03f6f45fd7c7e578ebcb77884faf
parent 0cacb14c4ee78e4618339d1c855550a445168bea

Add tracing events for system service lifecycle events

To help debug time spent on startup, add tracing events for system
service lifecycle events.

Change-Id: Icfdafe2b1fa56a2533af0cf08810ef455c20939a

services/core/java/com/android/server/SystemServiceManager.java

diff --git a/services/core/java/com/android/server/SystemServiceManager.java b/services/core/java/com/android/server/SystemServiceManager.java
index ecc69e9..90f507c 100644
--- a/services/core/java/com/android/server/SystemServiceManager.java
+++ b/services/core/java/com/android/server/SystemServiceManager.java
@@ -156,12 +156,15 @@
         final int serviceLen = mServices.size();
         for (int i = 0; i < serviceLen; i++) {
             final SystemService service = mServices.get(i);
+            Trace.traceBegin(Trace.TRACE_TAG_SYSTEM_SERVER, "onStartUser "
+                    + service.getClass().getName());
             try {
                 service.onStartUser(userHandle);
             } catch (Exception ex) {
                 Slog.wtf(TAG, "Failure reporting start of user " + userHandle
                         + " to service " + service.getClass().getName(), ex);
             }
+            Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
         }
     }
 
@@ -169,12 +172,15 @@
         final int serviceLen = mServices.size();
         for (int i = 0; i < serviceLen; i++) {
             final SystemService service = mServices.get(i);
+            Trace.traceBegin(Trace.TRACE_TAG_SYSTEM_SERVER, "onUnlockUser "
+                    + service.getClass().getName());
             try {
                 service.onUnlockUser(userHandle);
             } catch (Exception ex) {
                 Slog.wtf(TAG, "Failure reporting unlock of user " + userHandle
                         + " to service " + service.getClass().getName(), ex);
             }
+            Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
         }
     }
 
@@ -182,12 +188,15 @@
         final int serviceLen = mServices.size();
         for (int i = 0; i < serviceLen; i++) {
             final SystemService service = mServices.get(i);
+            Trace.traceBegin(Trace.TRACE_TAG_SYSTEM_SERVER, "onSwitchUser "
+                    + service.getClass().getName());
             try {
                 service.onSwitchUser(userHandle);
             } catch (Exception ex) {
                 Slog.wtf(TAG, "Failure reporting switch of user " + userHandle
                         + " to service " + service.getClass().getName(), ex);
             }
+            Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
         }
     }
 
@@ -195,12 +204,15 @@
         final int serviceLen = mServices.size();
         for (int i = 0; i < serviceLen; i++) {
             final SystemService service = mServices.get(i);
+            Trace.traceBegin(Trace.TRACE_TAG_SYSTEM_SERVER, "onStopUser "
+                    + service.getClass().getName());
             try {
                 service.onStopUser(userHandle);
             } catch (Exception ex) {
                 Slog.wtf(TAG, "Failure reporting stop of user " + userHandle
                         + " to service " + service.getClass().getName(), ex);
             }
+            Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
         }
     }
 
@@ -208,12 +220,15 @@
         final int serviceLen = mServices.size();
         for (int i = 0; i < serviceLen; i++) {
             final SystemService service = mServices.get(i);
+            Trace.traceBegin(Trace.TRACE_TAG_SYSTEM_SERVER, "onCleanupUser "
+                    + service.getClass().getName());
             try {
                 service.onCleanupUser(userHandle);
             } catch (Exception ex) {
                 Slog.wtf(TAG, "Failure reporting cleanup of user " + userHandle
                         + " to service " + service.getClass().getName(), ex);
             }
+            Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
         }
     }