MemorySystem Class Reference

The MemorySystem class connecting multiple caches and main memory. More...

#include <memory_system.h>

Inheritance diagram for MemorySystem:

Collaboration diagram for MemorySystem:

Public Member Functions
	MemorySystem (cache_config &config)
	Construct a new memory system. More...
void	issuePrRd (addr_t addr, uint32_t cache_id, size_t read_timestamp)
	Issue a PrWr message to a cache. More...
void	issuePrWr (addr_t addr, uint32_t cache_id, size_t write_timestamp)
	Issue a PrRd message to a cache. More...
virtual void	issueBusMsg (bus_msg_e bus_msg, addr_t addr, uint32_t cache_id)=0
	Issue a bus message from a cache to all other caches. More...
void	printStats ()
	Print simulation run statistics in CSV format (headerless)

Data Fields
size_t	access_timestamp
	The access number of the current memory access.
size_t	most_recent_sibling
	The most recent timestamp of a cache block across all caches.
bool	copies_exist
	Flag to indicate if copies of a cache block exist in other caches.
bool	flushed
	Flag to indicate if a cache flushed one of its lines.

Protected Attributes
Cache *	caches [MAX_N_CACHES]
	Array of this memory system's caches.

Private Member Functions
void	verifyTimestamp (addr_t addr, bool write, size_t current_timestamp)
	Check if all valid copies of a cache block have the same timestamp. More...

Private Attributes
cache_config	config
	Config for this memory system.

Detailed Description

The MemorySystem class connecting multiple caches and main memory.

Constructor & Destructor Documentation

MemorySystem()

MemorySystem::MemorySystem

(

cache_config &

config

)

Construct a new memory system.

Parameters

config

The configuration of this memory system

Member Function Documentation

issueBusMsg()

virtual void MemorySystem::issueBusMsg ( bus_msg_e  bus_msg, addr_t  addr, uint32_t  cache_id  )

pure virtual

Issue a bus message from a cache to all other caches.

Parameters

bus_msg	The specific bus message
addr	The address accessed
cache_id	The cache ID of the requestor

Implemented in Broadcast.

issuePrRd()

void MemorySystem::issuePrRd	(	addr_t	addr,
		uint32_t	cache_id,
		size_t	read_timestamp
	)

Issue a PrWr message to a cache.

Parameters

addr	The address accessed
cache_id	The cache ID of the recipient
read_timestamp	The access number of the current read access

issuePrWr()

void MemorySystem::issuePrWr	(	addr_t	addr,
		uint32_t	cache_id,
		size_t	write_timestamp
	)

Issue a PrRd message to a cache.

Parameters

addr	The address accessed
cache_id	The cache ID of the recipient
write_timestamp	The access number of the current write access

verifyTimestamp()

void MemorySystem::verifyTimestamp ( addr_t  addr, bool  write, size_t  current_timestamp  )

private

Check if all valid copies of a cache block have the same timestamp.

Parameters

addr	The memory address in the cache block
write	Whether the current operation is a processor write
current_timestamp	The current access number

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The documentation for this class was generated from the following files:

• src/memory_system.h
• src/memory_system.cc