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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 this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef INCLUDED_MB_WORKER_H
#define INCLUDED_MB_WORKER_H
#include <omnithread.h>
#include <mblock/common.h>
#include <mblock/class_registry.h>
class mb_worker;
//typedef boost::shared_ptr<mb_worker> mb_worker_sptr;
class mb_runtime_thread_per_block;
/*!
* \brief Worker thread for thread_per_block runtime
* \implementation
*/
class mb_worker : public omni_thread
{
public:
//! worker thread states
enum worker_state_t {
TS_UNINITIALIZED, // new, uninitialized
TS_RUNNING, // normal steady-state condition.
TS_DEAD // thread is dead
};
//! why we're dead
enum cause_of_death_t {
RIP_NOT_DEAD_YET, // not dead
RIP_EXIT, // normal exit
RIP_TERMINATE, // caught terminate exception
RIP_CTOR_EXCEPTION, // constructor raised an exception
RIP_INIT_EXCEPTION, // initial_transition rasised an exception
RIP_UNHANDLED_EXCEPTION // somebody (most likely handle_message) raised an exception
};
/*
* Args used by new thread to create mb_mblock
*/
mb_runtime_thread_per_block *d_runtime;
mb_mblock_maker_t d_maker;
std::string d_instance_name;
pmt_t d_user_arg;
mb_mblock_sptr d_mblock; //< holds pointer to created mblock
/*!
* \brief General mutex for all these fields.
*
* They are accessed by both the main runtime thread and the newly
* created thread that runs the mblock's main loop.
*/
omni_mutex d_mutex;
omni_condition d_state_cond; //< state change notifications
worker_state_t d_state;
cause_of_death_t d_why_dead;
mb_worker(mb_runtime_thread_per_block *runtime,
mb_mblock_maker_t maker,
const std::string &instance_name,
pmt_t user_arg);
// ~mb_worker();
/*!
* \brief This code runs as the top-level of the new thread
*/
void worker_thread_top_level();
/*!
* \brief Invokes the top-level of the new thread (name kind of sucks)
*/
void *run_undetached(void *arg);
private:
// Neither d_mutex nor runtime->d_mutex may be held while calling this.
// It locks and unlocks them itself.
void set_state(worker_state_t state);
};
#endif /* INCLUDED_MB_WORKER_H */
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