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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_TIMER_QUEUE_H
#define INCLUDED_MB_TIMER_QUEUE_H
#include <mblock/time.h>
#include <vector>
#include <queue>
#include <pmt.h>
#include <mblock/msg_accepter.h>
class mb_timeout {
public:
mb_time d_when; // absolute time to fire timeout
mb_time d_delta; // if periodic, delta_t to next timeout
bool d_is_periodic; // true iff this is a periodic timeout
pmt_t d_user_data; // data from %timeout msg
pmt_t d_handle; // handle for cancellation
mb_msg_accepter_sptr d_accepter; // where to send the message
// one-shot constructor
mb_timeout(const mb_time &abs_time,
pmt_t user_data, mb_msg_accepter_sptr accepter);
// periodic constructor
mb_timeout(const mb_time &first_abs_time, const mb_time &delta_time,
pmt_t user_data, mb_msg_accepter_sptr accepter);
pmt_t handle() const { return d_handle; }
};
typedef boost::shared_ptr<mb_timeout> mb_timeout_sptr;
//! Sort criterion for priority_queue
class timeout_later
{
public:
bool operator() (const mb_timeout_sptr t1, const mb_timeout_sptr t2)
{
return t1->d_when > t2->d_when;
}
};
class mb_timer_queue : public std::priority_queue<mb_timeout_sptr,
std::vector<mb_timeout_sptr>,
timeout_later>
{
public:
void cancel(pmt_t handle);
};
#endif /* INCLUDED_MB_TIMER_QUEUE_H */
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