#fixed code
                                public void removeAllCounters() {
        // Remove all counters from counterHandle map
        for (HANDLEByReference href : counterHandleMap.values()) {
            PerfDataUtil.removeCounter(href);
        }
        counterHandleMap.clear();
        // Remove query
        if (this.queryHandle != null) {
            PerfDataUtil.closeQuery(this.queryHandle);
        }
        this.queryHandle = null;
    }
#vulnerable code 
                                public void removeAllCounters() {
        // Remove all counter handles
        for (HANDLEByReference href : counterHandleMap.values()) {
            PerfDataUtil.removeCounter(href);
        }
        counterHandleMap.clear();
        // Remove all queries
        for (HANDLEByReference query : queryHandleMap.values()) {
            PerfDataUtil.closeQuery(query);
        }
        queryHandleMap.clear();
        queryCounterMap.clear();
    } 
                            #location 9 
                            #vulnerability type INTERFACE_NOT_THREAD_SAFE