GNU Radio C++ API
gr_tpb_detail.h
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/* -*- c++ -*- */
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/*
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* Copyright 2008,2009 Free Software Foundation, Inc.
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*
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* This file is part of GNU Radio
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*
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* GNU Radio 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, or (at your option)
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* any later version.
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*
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* GNU Radio 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 along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef INCLUDED_GR_TPB_DETAIL_H
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#define INCLUDED_GR_TPB_DETAIL_H
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#include <
gr_core_api.h
>
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#include <
gruel/thread.h
>
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#include <deque>
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#include <
gruel/pmt.h
>
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class
gr_block_detail
;
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/*!
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* \brief used by thread-per-block scheduler
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*/
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struct
GR_CORE_API
gr_tpb_detail
{
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gruel::mutex
mutex
;
//< protects all vars
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bool
input_changed
;
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gruel::condition_variable
input_cond
;
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bool
output_changed
;
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gruel::condition_variable
output_cond
;
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private
:
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std::deque<pmt::pmt_t> msg_queue;
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public
:
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gr_tpb_detail
()
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: input_changed(false), output_changed(false) { }
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//! Called by us to tell all our upstream blocks that their output may have changed.
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void
notify_upstream(
gr_block_detail
*d);
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//! Called by us to tell all our downstream blocks that their input may have changed.
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void
notify_downstream(
gr_block_detail
*d);
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//! Called by us to notify both upstream and downstream
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void
notify_neighbors(
gr_block_detail
*d);
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//! Called by us
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void
clear_changed
()
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{
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gruel::scoped_lock
guard(
mutex
);
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input_changed =
false
;
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output_changed =
false
;
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}
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//! is the queue empty?
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bool
empty_p
()
const
{
return
msg_queue.empty(); }
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//| Acquires and release the mutex
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void
insert_tail(
pmt::pmt_t
msg);
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/*!
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* \returns returns pmt at head of queue or pmt_t() if empty.
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*/
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pmt::pmt_t
delete_head_nowait();
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/*!
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* \returns returns pmt at head of queue or pmt_t() if empty.
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* Caller must already be holding the mutex
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*/
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pmt::pmt_t
delete_head_nowait_already_holding_mutex();
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private
:
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//! Used by notify_downstream
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void
set_input_changed()
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{
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gruel::scoped_lock
guard(
mutex
);
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input_changed =
true
;
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input_cond.notify_one();
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}
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//! Used by notify_upstream
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void
set_output_changed()
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{
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gruel::scoped_lock
guard(
mutex
);
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output_changed =
true
;
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output_cond.notify_one();
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}
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};
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#endif
/* INCLUDED_GR_TPB_DETAIL_H */
gnuradio-core
src
lib
runtime
gr_tpb_detail.h
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