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21 #ifndef INCLUDED_MB_MSG_QUEUE_H
22 #define INCLUDED_MB_MSG_QUEUE_H
24 #include <mblock/common.h>
25 #include <gnuradio/omnithread.h>
26 #include <mblock/time.h>
29 * \brief priority queue for mblock messages
31 class mb_msg_queue : boost::noncopyable
33 // When empty both head and tail are zero.
38 bool empty_p() const { return head == 0; }
42 omni_condition d_not_empty; // reader waits on this
44 // FIXME add bitmap to indicate which queues are non-empty.
45 subq d_queue[MB_NPRI];
47 mb_message_sptr get_highest_pri_msg_helper();
53 //! Insert \p msg into priority queue.
54 void insert(mb_message_sptr msg);
57 * \brief Delete highest pri message from the queue and return it.
58 * Returns equivalent of zero pointer if queue is empty.
60 mb_message_sptr get_highest_pri_msg_nowait();
63 * \brief Delete highest pri message from the queue and return it.
64 * If the queue is empty, this call blocks until it can return a message.
66 mb_message_sptr get_highest_pri_msg();
69 * \brief Delete highest pri message from the queue and return it.
70 * If the queue is empty, this call blocks until it can return a message
71 * or real-time exceeds the absolute time, abs_time.
73 * \param abs_time specifies the latest absolute time to wait until.
76 * \returns a valid mb_message_sptr, or the equivalent of a zero pointer
77 * if the call timed out while waiting.
79 mb_message_sptr get_highest_pri_msg_timedwait(const mb_time &abs_time);
82 #endif /* INCLUDED_MB_MSG_QUEUE_H */