From a9eba18fa6ee4208ad8283c8fea598ce5b40f255 Mon Sep 17 00:00:00 2001
From: Chris Peterson <cpeterson@mozilla.com>
Date: Wed, 7 Mar 2012 11:19:05 -0800
Subject: [PATCH] Bug 733434 - Part 1: Register a global
 UncaughtExceptionHandler that calls Breakpad. r=blassey

---
 mobile/android/base/GeckoApp.java      |  2 ++
 mobile/android/base/GeckoAppShell.java | 16 +++++++++++++++-
 2 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/mobile/android/base/GeckoApp.java b/mobile/android/base/GeckoApp.java
index e3ba2ef3672..97f2fb55eb0 100644
--- a/mobile/android/base/GeckoApp.java
+++ b/mobile/android/base/GeckoApp.java
@@ -1608,6 +1608,8 @@ abstract public class GeckoApp
     @Override
     public void onCreate(Bundle savedInstanceState)
     {
+        GeckoAppShell.registerGlobalExceptionHandler();
+
         mAppContext = this;
 
         // StrictMode is set by defaults resource flag |enableStrictMode|.
diff --git a/mobile/android/base/GeckoAppShell.java b/mobile/android/base/GeckoAppShell.java
index eecdfc822a4..b3ba0651b12 100644
--- a/mobile/android/base/GeckoAppShell.java
+++ b/mobile/android/base/GeckoAppShell.java
@@ -143,13 +143,27 @@ public class GeckoAppShell
     public static native void loadSQLiteLibsNative(String apkName, boolean shouldExtract);
     public static native void onChangeNetworkLinkStatus(String status);
 
+    public static void registerGlobalExceptionHandler() {
+        Thread.setDefaultUncaughtExceptionHandler(new Thread.UncaughtExceptionHandler() {
+            public void uncaughtException(Thread thread, Throwable e) {
+                Log.e(LOGTAG, ">>> REPORTING UNCAUGHT EXCEPTION FROM THREAD "
+                              + thread.getId() + " (\"" + thread.getName() + "\")", e);
+                reportJavaCrash(getStackTraceString(e));
+            }
+        });
+    }
+
     public static void reportJavaCrash(Throwable e) {
         Log.e(LOGTAG, "top level exception", e);
+        reportJavaCrash(getStackTraceString(e));
+    }
+
+    private static String getStackTraceString(Throwable e) {
         StringWriter sw = new StringWriter();
         PrintWriter pw = new PrintWriter(sw);
         e.printStackTrace(pw);
         pw.flush();
-        reportJavaCrash(sw.toString());
+        return sw.toString();
     }
 
     private static native void reportJavaCrash(String stackTrace);