{
    struct query *query = handle;
    struct list *item, *next;

    TRACE("%p\n", handle);

    EnterCriticalSection( &pdh_handle_cs );
    if (!query || query->magic != PDH_MAGIC_QUERY)
    {
        LeaveCriticalSection( &pdh_handle_cs );
        return PDH_INVALID_HANDLE;
    }

    if (query->thread)
    {
        HANDLE thread = query->thread;
        SetEvent( query->stop );
        LeaveCriticalSection( &pdh_handle_cs );

        WaitForSingleObject( thread, INFINITE );

        EnterCriticalSection( &pdh_handle_cs );
        if (query->magic != PDH_MAGIC_QUERY)
        {
            LeaveCriticalSection( &pdh_handle_cs );
            return ERROR_SUCCESS;
        }
        CloseHandle( query->stop );
        CloseHandle( query->thread );
        query->thread = NULL;
    }

    LIST_FOR_EACH_SAFE( item, next, &query->counters )
    {
        struct counter *counter = LIST_ENTRY( item, struct counter, entry );

        list_remove( &counter->entry );
        destroy_counter( counter );
    }

    destroy_query( query );

    LeaveCriticalSection( &pdh_handle_cs );
    return ERROR_SUCCESS;
}

ReactOS Development > Doxygen