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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.
*/
#ifndef __MEM_RUBY_SYSTEM_TIMERTABLE_HH__
#define __MEM_RUBY_SYSTEM_TIMERTABLE_HH__
#include <cassert>
#include <iostream>
#include <map>
#include <string>
#include "mem/ruby/common/Address.hh"
#include "mem/ruby/common/Consumer.hh"
class TimerTable
{
public:
TimerTable();
void
setConsumer(Consumer* consumer_ptr)
{
assert(m_consumer_ptr == NULL);
m_consumer_ptr = consumer_ptr;
}
void setClockObj(ClockedObject* obj)
{
assert(m_clockobj_ptr == NULL);
m_clockobj_ptr = obj;
}
void
setDescription(const std::string& name)
{
m_name = name;
}
bool isReady() const;
const Address& readyAddress() const;
bool isSet(const Address& address) const { return !!m_map.count(address); }
void set(const Address& address, Cycles relative_latency);
void set(const Address& address, uint64_t relative_latency)
{ set(address, Cycles(relative_latency)); }
void unset(const Address& address);
void print(std::ostream& out) const;
private:
void updateNext() const;
// Private copy constructor and assignment operator
TimerTable(const TimerTable& obj);
TimerTable& operator=(const TimerTable& obj);
// Data Members (m_prefix)
// use a std::map for the address map as this container is sorted
// and ensures a well-defined iteration order
typedef std::map<Address, Cycles> AddressMap;
AddressMap m_map;
mutable bool m_next_valid;
mutable Cycles m_next_time; // Only valid if m_next_valid is true
mutable Address m_next_address; // Only valid if m_next_valid is true
//! Object used for querying time.
ClockedObject* m_clockobj_ptr;
//! Consumer to signal a wakeup()
Consumer* m_consumer_ptr;
std::string m_name;
};
inline std::ostream&
operator<<(std::ostream& out, const TimerTable& obj)
{
obj.print(out);
out << std::flush;
return out;
}
#endif // __MEM_RUBY_SYSTEM_TIMERTABLE_HH__
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