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7ac203b39c
Its important to stop the threads before we let the other smart point objects naturally deconstruct to avoid thread-based race conditions. The attempt to deconstruct the tree and soft time ctrl had a bug because the tree had references in subtrees within the dboard manager class. Rather than continue to fix this method and deconstruct the tree to free up soft time ctrl, it seems simpler to just stop the thread in soft time ctrl, and then let it naturally deconstruct later by ref count.
77 lines
2.6 KiB
C++
77 lines
2.6 KiB
C++
//
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// Copyright 2011-2012 Ettus Research LLC
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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//
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#ifndef INCLUDED_LIBUHD_USRP_USRP1_SOFT_TIME_CTRL_HPP
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#define INCLUDED_LIBUHD_USRP_USRP1_SOFT_TIME_CTRL_HPP
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#include <uhd/types/stream_cmd.hpp>
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#include <uhd/types/time_spec.hpp>
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#include <uhd/types/metadata.hpp>
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#include <uhd/transport/bounded_buffer.hpp>
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#include <boost/utility.hpp>
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#include <boost/shared_ptr.hpp>
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#include <boost/function.hpp>
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namespace uhd{ namespace usrp{
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/*!
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* The soft time control emulates some of the
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* advanced streaming capabilities of the later USRP models.
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* Soft time control uses the system time to emulate
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* timed transmits, timed receive commands, device time,
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* and inline and async error messages.
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*/
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class soft_time_ctrl : boost::noncopyable{
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public:
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typedef boost::shared_ptr<soft_time_ctrl> sptr;
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typedef boost::function<void(bool)> cb_fcn_type;
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/*!
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* Make a new soft time control.
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* \param stream_on_off a function to enable/disable rx
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* \return a new soft time control object
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*/
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static sptr make(const cb_fcn_type &stream_on_off);
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//! Set the current time
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virtual void set_time(const time_spec_t &time) = 0;
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//! Get the current time
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virtual time_spec_t get_time(void) = 0;
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//! Call after the internal recv function
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virtual size_t recv_post(rx_metadata_t &md, const size_t nsamps) = 0;
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//! Call before the internal send function
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virtual void send_pre(const tx_metadata_t &md, double &timeout) = 0;
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//! Issue a stream command to receive
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virtual void issue_stream_cmd(const stream_cmd_t &cmd) = 0;
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//! Get access to a buffer of async metadata
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virtual transport::bounded_buffer<async_metadata_t> &get_async_queue(void) = 0;
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//! Get access to a buffer of inline metadata
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virtual transport::bounded_buffer<rx_metadata_t> &get_inline_queue(void) = 0;
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//! Stops threads before deconstruction to avoid race conditions
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virtual void stop(void) = 0;
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};
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}} //namespace
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#endif /* INCLUDED_LIBUHD_USRP_USRP1_SOFT_TIME_CTRL_HPP */
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