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a/src/utils/workqueue.h b/src/utils/workqueue.h
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     * @param name for message printing
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     * @param name for message printing
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     * @param hi number of tasks on queue before clients blocks. Default 0 
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     * @param hi number of tasks on queue before clients blocks. Default 0 
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     *    meaning no limit. hi == -1 means that the queue is disabled.
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     *    meaning no limit. hi == -1 means that the queue is disabled.
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     * @param lo minimum count of tasks before worker starts. Default 1.
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     * @param lo minimum count of tasks before worker starts. Default 1.
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     */
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     */
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    WorkQueue(const string& name, int hi = 0, int lo = 1)
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    WorkQueue(const string& name, size_t hi = 0, size_t lo = 1)
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        : m_name(name), m_high(hi), m_low(lo),
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        : m_name(name), m_high(hi), m_low(lo),
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          m_workers_exited(0), m_clients_waiting(0), m_workers_waiting(0), 
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          m_workers_exited(0), m_clients_waiting(0), m_workers_waiting(0), 
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      m_tottasks(0), m_nowake(0), m_workersleeps(0), m_clientsleeps(0)
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      m_tottasks(0), m_nowake(0), m_workersleeps(0), m_clientsleeps(0)
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    {
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    {
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        m_ok = (m_high >= 0) && (pthread_cond_init(&m_ccond, 0) == 0) &&
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        m_ok = (pthread_cond_init(&m_ccond, 0) == 0) &&
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        (pthread_cond_init(&m_wcond, 0) == 0);
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        (pthread_cond_init(&m_wcond, 0) == 0);
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    }
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    }
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    ~WorkQueue() 
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    ~WorkQueue() 
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    {
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    {