StrictMode: now in more system server threads.

Who knew there were so many Loopers in the system server?

This adds dropbox logging for the activity manager thread, policy
thread, and window manager thread.

The goal's to catch more stuttering.

Change-Id: I3ce8518ce183b3c90426750a2992e67200fee5d5

2 files changed, 16 insertions, 0 deletions

diff --git a/services/java/com/android/server/WindowManagerService.java b/services/java/com/android/server/WindowManagerService.java
index 1cbc8324..dbc7f48 100644
--- a/services/java/com/android/server/WindowManagerService.java
+++ b/services/java/com/android/server/WindowManagerService.java
@@ -85,6 +85,7 @@ import android.os.PowerManager;
 import android.os.Process;
 import android.os.RemoteException;
 import android.os.ServiceManager;
+import android.os.StrictMode;
 import android.os.SystemClock;
 import android.os.SystemProperties;
 import android.os.TokenWatcher;
@@ -920,6 +921,11 @@ public class WindowManagerService extends IWindowManager.Stub
                 notifyAll();
             }
 
+            // For debug builds, log event loop stalls to dropbox for analysis.
+            if (StrictMode.conditionallyEnableDebugLogging()) {
+                Slog.i(TAG, "Enabled StrictMode logging for WMThread's Looper");
+            }
+
             Looper.loop();
         }
     }
@@ -957,6 +963,11 @@ public class WindowManagerService extends IWindowManager.Stub
                 notifyAll();
             }
 
+            // For debug builds, log event loop stalls to dropbox for analysis.
+            if (StrictMode.conditionallyEnableDebugLogging()) {
+                Slog.i(TAG, "Enabled StrictMode for PolicyThread's Looper");
+            }
+
             Looper.loop();
         }
     }
diff --git a/services/java/com/android/server/am/ActivityManagerService.java b/services/java/com/android/server/am/ActivityManagerService.java
index 60b2b67..84839b6 100644
--- a/services/java/com/android/server/am/ActivityManagerService.java
+++ b/services/java/com/android/server/am/ActivityManagerService.java
@@ -1334,6 +1334,11 @@ public final class ActivityManagerService extends ActivityManagerNative
                 }
             }
 
+            // For debug builds, log event loop stalls to dropbox for analysis.
+            if (StrictMode.conditionallyEnableDebugLogging()) {
+                Slog.i(TAG, "Enabled StrictMode logging for AThread's Looper");
+            }
+
             Looper.loop();
         }
     }