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/* -*- C++ -*- */
//=============================================================================
/**
* @file BPR_Drivers_T.h
*
* This code factors out common class templates for use in
* the different possible implementations of the Timer_Queue
* based bounded packet relay example.
*
* @author Chris Gill <cdgill@cs.wustl.edu> and Douglas C. Schmidt <d.schmidt@vanderbilt.edu> Based on the Timer Queue Test example written by Carlos O'Ryan <coryan@cs.wustl.edu> and Douglas C. Schmidt <d.schmidt@vanderbilt.edu> and Sergio Flores-Gaitan <sergio@cs.wustl.edu>
*/
//=============================================================================
#ifndef _BPR_DRIVERS_T_H_
#define _BPR_DRIVERS_T_H_
#include "ace/Functor.h"
#if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */
// Forward declarations.
class Input_Device_Wrapper_Base;
class Output_Device_Wrapper_Base;
/**
* @class Bounded_Packet_Relay_Driver
*
* @brief This abstract base class provides a simple abstraction for a
* test driver for the bounded packet relay example.
*
* This is the place where the common code to test the different
* implementations of the timer queue resides. This class has
* the logic for the parse_commands () method, the run (),
* read_input () and get_next_request () methods. Subclasses can
* override these methods if there is some logic that is specific
* to that implementation.
*/
template <class TQ>
class Bounded_Packet_Relay_Driver
{
public:
/// Constructor.
Bounded_Packet_Relay_Driver ();
/// Destructor.
virtual ~Bounded_Packet_Relay_Driver ();
/// Breaks up the input string buffer into pieces and executes the
/// appropriate method to handle that operation.
virtual int parse_commands (const char *buf);
/**
* This is the main entry point for the driver. The user of the
* class should normally invoke this method. Returns 0 when
* successful, or 0 otherwise.
*/
virtual int run ();
/// This internal method gets the next request from the user.
/// Returns -1 when user wants to exit. Returns 0 otherwise.
virtual int get_next_request ();
/**
* Reads input from the user into the buffer <buf> with a maximum of
* <bufsiz> bytes. Returns the amount of bytes actually read
* Otherwise, a -1 is returned and errno is set to indicate the
* error.
*/
virtual ssize_t read_input (char *buf, size_t bufsiz);
/// Prints the user interface for the driver to STDERR.
virtual int display_menu () = 0;
/// Initializes values and operations for the driver.
virtual int init () = 0;
/// Get count of packets to send in a transmission.
u_long packet_count ();
/// Set count of packets to send in a transmission.
void packet_count (u_long pc);
/// Get rate at which input packets are to arrive.
u_long arrival_period ();
/// Set rate at which input packets are to arrive.
void arrival_period (u_long ap);
/// Get rate at which packets are to be relayed (usec).
u_long send_period ();
/// Set rate at which packets are to be relayed (usec).
void send_period (u_long sp);
/// Get limit on the duration of the transmission (usec).
u_long duration_limit ();
/// Set limit on the duration of the transmission (usec).
void duration_limit (u_long dl);
/// Get logging level.
int logging_level ();
/// Set logging level.
void logging_level (int ll);
protected:
// = Major Driver Mechanisms
/// Timer queue for transmission timeouts.
TQ timer_queue_;
// = Set of commands to be executed.
/// Set packet count command.
ACE_Command_Base *packet_count_cmd_;
/// Set arrival period command.
ACE_Command_Base *arrival_period_cmd_;
/// Set transmit period command.
ACE_Command_Base *transmit_period_cmd_;
/// Set duration limit command.
ACE_Command_Base *duration_limit_cmd_;
/// Set logging level command.
ACE_Command_Base *logging_level_cmd_;
/// Run transmission command.
ACE_Command_Base *run_transmission_cmd_;
/// Cancel transmission command.
ACE_Command_Base *cancel_transmission_cmd_;
/// Report statistics command.
ACE_Command_Base *report_stats_cmd_;
/// Shut down the driver.
ACE_Command_Base *shutdown_cmd_;
private:
/// Count of packets to send in a transmission.
u_long packet_count_;
/// Rate at which input packets are to arrive.
u_long arrival_period_;
/// Rate at which packets are to be relayed (usec).
u_long send_period_;
/// Limit on the duration of the transmission (usec).
u_long duration_limit_;
/// Logging level.
int logging_level_;
};
#if defined (ACE_TEMPLATES_REQUIRE_SOURCE)
#include "BPR_Drivers_T.cpp"
#endif /* ACE_TEMPLATES_REQUIRE_SOURCE */
#if defined (ACE_TEMPLATES_REQUIRE_PRAGMA)
#pragma implementation ("BPR_Drivers_T.cpp")
#endif /* ACE_TEMPLATES_REQUIRE_PRAGMA */
#endif /* _BPR_DRIVERS_T_H_ */
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