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/* -*- c++ -*- */
/*
* Copyright 2007,2008 Free Software Foundation, Inc.
*
* This file is part of GNU Radio
*
* GNU Radio is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3, or (at your option)
* any later version.
*
* GNU Radio is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNU Radio; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
#ifndef INCLUDED_GR_TOP_BLOCK_IMPL_H
#define INCLUDED_GR_TOP_BLOCK_IMPL_H
#include <gr_runtime_api.h>
#include <gr_scheduler.h>
#include <gruel/thread.h>
/*!
*\brief Abstract implementation details of gr_top_block
* \ingroup internal
*
* The actual implementation of gr_top_block. Separate class allows
* decoupling of changes from dependent classes.
*
*/
class GR_RUNTIME_API gr_top_block_impl
{
public:
gr_top_block_impl(gr_top_block *owner);
~gr_top_block_impl();
// Create and start scheduler threads
void start(int max_noutput_items=100000000);
// Signal scheduler threads to stop
void stop();
// Wait for scheduler threads to exit
void wait();
// Lock the top block to allow reconfiguration
void lock();
// Unlock the top block at end of reconfiguration
void unlock();
// Return a string list of edges
std::string edge_list();
// Dump the flowgraph to stdout
void dump();
// Get the number of max noutput_items in the flowgraph
int max_noutput_items();
// Set the maximum number of noutput_items in the flowgraph
void set_max_noutput_items(int nmax);
protected:
enum tb_state { IDLE, RUNNING };
gr_top_block *d_owner;
gr_flat_flowgraph_sptr d_ffg;
gr_scheduler_sptr d_scheduler;
gruel::mutex d_mutex; // protects d_state and d_lock_count
tb_state d_state;
int d_lock_count;
int d_max_noutput_items;
private:
void restart();
};
#endif /* INCLUDED_GR_TOP_BLOCK_IMPL_H */
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