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/*
* Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* This is the virtual base class of all classes that can be the
* targets of wakeup events. There is only two methods, wakeup() and
* print() and no data members.
*/
#ifndef __MEM_RUBY_COMMON_CONSUMER_HH__
#define __MEM_RUBY_COMMON_CONSUMER_HH__
#include <iostream>
#include <set>
#include "mem/ruby/common/Global.hh"
#include "mem/ruby/eventqueue/RubyEventQueue.hh"
class MessageBuffer;
class Consumer
{
public:
Consumer()
: m_last_scheduled_wakeup(0), m_last_wakeup(0)
{
}
virtual
~Consumer()
{ }
void
triggerWakeup(RubyEventQueue *eventQueue)
{
Time time = eventQueue->getTime();
if (m_last_wakeup != time) {
wakeup();
m_last_wakeup = time;
}
}
virtual void wakeup() = 0;
virtual void print(std::ostream& out) const = 0;
const Time&
getLastScheduledWakeup() const
{
return m_last_scheduled_wakeup;
}
void
setLastScheduledWakeup(const Time& time)
{
m_last_scheduled_wakeup = time;
}
bool
alreadyScheduled(Time time)
{
return m_scheduled_wakeups.find(time) != m_scheduled_wakeups.end();
}
void
insertScheduledWakeupTime(Time time)
{
m_scheduled_wakeups.insert(time);
}
void
removeScheduledWakeupTime(Time time)
{
assert(alreadyScheduled(time));
m_scheduled_wakeups.erase(time);
}
private:
Time m_last_scheduled_wakeup;
std::set<Time> m_scheduled_wakeups;
Time m_last_wakeup;
};
inline std::ostream&
operator<<(std::ostream& out, const Consumer& obj)
{
obj.print(out);
out << std::flush;
return out;
}
#endif // __MEM_RUBY_COMMON_CONSUMER_HH__
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