Thanks! I will have a try At 2011-01-09 04:16:26，"Tom Rondeau" <trondeau1...@gmail.com> wrote: >On Tue, Jan 4, 2011 at 2:19 PM, Jie Liu <liua...@126.com> wrote: >> In GRC, I defined a message queue like below: >> self.msg_q = gr.msg_queue() >> >> It waits for the USRP transmitter, and read the message received in the USRP >> receiver in the local machine, using the code like below: >> >> m = tb.msg_q.delete_head() >> >> But if there is no message sent. It seems that the program halts and waits >> for the message to be sent. How can I let the program continue to run from >> here? >> >> Best > >There is a msg_queue method "delete_head_nowait." Look at the >gr_msg_queue page in the Doxygen documentation. > >Tom
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