bug 634375 - kill plugin-container if it's in the way r=dougt a=blocking-fennec

embedding/android/GeckoApp.java

@@ -455,6 +455,8 @@ abstract public class GeckoApp
             outFile.length() == fileEntry.getSize())
             return;
 
+        killAnyZombies();
+
         File dir = outFile.getParentFile();
         if (!outFile.exists())
             dir.mkdirs();
@@ -474,6 +476,27 @@ abstract public class GeckoApp
         outFile.setLastModified(fileEntry.getTime());
     }
 
+    boolean haveKilledZombies = false;
+
+    void killAnyZombies() {
+        if (haveKilledZombies)
+            return;
+        haveKilledZombies = true;
+        File proc = new File("/proc");
+        File[] files = proc.listFiles();
+        for (int i = 0; i < files.length; i++) {
+            File p = files[i];
+            File pEnv = new File(p, "environ");
+            if (pEnv.canRead() && !p.getName().equals("self")) {
+                int pid = Integer.parseInt(p.getName());
+                if (pid != android.os.Process.myPid()) {
+                    Log.i("GeckoProcs", "gonna kill pid: " + p.getName());
+                    android.os.Process.killProcess(pid);
+                }
+            }
+        }
+    }
+
     public void addEnvToIntent(Intent intent) {
         Map<String,String> envMap = System.getenv();
         Set<Map.Entry<String,String>> envSet = envMap.entrySet();