Bug 823452: Check logcat for Java exceptions; r=jmaher

build/mobile/remoteautomation.py

@@ -87,7 +87,41 @@ class RemoteAutomation(Automation):
 
         return status
 
+    def checkForJavaException(self, logcat):
+        found_exception = False
+        for i, line in enumerate(logcat):
+            if "REPORTING UNCAUGHT EXCEPTION" in line:
+                # Strip away the date, time, logcat tag and pid from the next two lines and
+                # concatenate the remainder to form a concise summary of the exception. 
+                #
+                # For example:
+                #
+                # 01-30 20:15:41.937 E/GeckoAppShell( 1703): >>> REPORTING UNCAUGHT EXCEPTION FROM THREAD 9 ("GeckoBackgroundThread")
+                # 01-30 20:15:41.937 E/GeckoAppShell( 1703): java.lang.NullPointerException
+                # 01-30 20:15:41.937 E/GeckoAppShell( 1703): 	at org.mozilla.gecko.GeckoApp$21.run(GeckoApp.java:1833)
+                # 01-30 20:15:41.937 E/GeckoAppShell( 1703): 	at android.os.Handler.handleCallback(Handler.java:587)
+                # 01-30 20:15:41.937 E/GeckoAppShell( 1703): 	at android.os.Handler.dispatchMessage(Handler.java:92)
+                # 01-30 20:15:41.937 E/GeckoAppShell( 1703): 	at android.os.Looper.loop(Looper.java:123)
+                # 01-30 20:15:41.937 E/GeckoAppShell( 1703): 	at org.mozilla.gecko.util.GeckoBackgroundThread.run(GeckoBackgroundThread.java:31)
+                #
+                #   -> java.lang.NullPointerException at org.mozilla.gecko.GeckoApp$21.run(GeckoApp.java:1833)
+                found_exception = True
+                logre = re.compile(r".*\):\s(.*)")
+                m = logre.search(logcat[i+1])
+                if m and m.group(1):
+                    top_frame = m.group(1)
+                m = logre.search(logcat[i+2])
+                if m and m.group(1):
+                    top_frame = top_frame + m.group(1)
+                print "PROCESS-CRASH | java-exception | %s" % top_frame
+                break
+        return found_exception
+
     def checkForCrashes(self, directory, symbolsPath):
+        logcat = self._devicemanager.getLogcat(filterOutRegexps=fennecLogcatFilters)
+        javaException = self.checkForJavaException(logcat)
+        if javaException:
+            return True
         try:
             remoteCrashDir = self._remoteProfile + '/minidumps/'
             if not self._devicemanager.dirExists(remoteCrashDir):