系统异常埋点

12883    public void addErrorToDropBox(String eventType,
12884            ProcessRecord process, String processName, ActivityRecord activity,
12885            ActivityRecord parent, String subject,
12886            final String report, final File logFile,
12887            final ApplicationErrorReport.CrashInfo crashInfo) {
12888        // NOTE -- this must never acquire the ActivityManagerService lock,
12889        // otherwise the watchdog may be prevented from resetting the system.
12890

        sTombstoneObserver = new FileObserver(TOMBSTONE_DIR.getPath(), FileObserver.CLOSE_WRITE) {
            @Override
            public void onEvent(int event, String path) {
                try {
                    File file = new File(TOMBSTONE_DIR, path);
                    if (file.isFile()) {
                        addFileToDropBox(db, prefs, headers, file.getPath(), LOG_SIZE, "SYSTEM_TOMBSTONE");
                    }
                } catch (IOException e) {
                    Slog.e(TAG, "Can‘t log tombstone", e);
                }
            }
        };