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/* -*- c++ -*- */
/*
* Copyright 2004,2008 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_BLOCK_EXECUTOR_H
#define INCLUDED_GR_BLOCK_EXECUTOR_H
#include <gr_runtime_api.h>
#include <gr_runtime_types.h>
#include <fstream>
#include <gr_tags.h>
//class gr_block_executor;
//typedef boost::shared_ptr<gr_block_executor> gr_block_executor_sptr;
/*!
* \brief Manage the execution of a single block.
* \ingroup internal
*/
class GR_RUNTIME_API gr_block_executor {
protected:
gr_block_sptr d_block; // The block we're trying to run
std::ofstream *d_log;
// These are allocated here so we don't have to on each iteration
gr_vector_int d_ninput_items_required;
gr_vector_int d_ninput_items;
gr_vector_const_void_star d_input_items;
std::vector<bool> d_input_done;
gr_vector_void_star d_output_items;
std::vector<uint64_t> d_start_nitems_read; //stores where tag counts are before work
std::vector<gr_tag_t> d_returned_tags;
int d_max_noutput_items;
#ifdef GR_PERFORMANCE_COUNTERS
bool d_use_pc;
#endif /* GR_PERFORMANCE_COUNTERS */
public:
gr_block_executor(gr_block_sptr block, int max_noutput_items=100000);
~gr_block_executor ();
enum state {
READY, // We made progress; everything's cool.
READY_NO_OUTPUT, // We consumed some input, but produced no output.
BLKD_IN, // no progress; we're blocked waiting for input data.
BLKD_OUT, // no progress; we're blocked waiting for output buffer space.
DONE, // we're done; don't call me again.
};
/*
* \brief Run one iteration.
*/
state run_one_iteration();
};
#endif /* INCLUDED_GR_BLOCK_EXECUTOR_H */
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