otawa::sim::CacheDriver Class Reference

This class provides a simple interface to drive the cache management unit of a simulator. More...

#include <otawa/sim/CacheDriver.h>

Inheritance diagram for otawa::sim::CacheDriver:

Public Types
enum	result_t { MISS = 0, HIT = 1 }
	This enumeration allows to know the result of a cache access. More...
enum	action_t { READ, WRITE }
	This enumeration identifies the kind of cache access. More...

Public Member Functions
virtual	~CacheDriver (void)
virtual result_t	access (address_t address, size_t size, action_t action)=0
	This function is called each time the cache is accessed. More...

Static Public Attributes
static CacheDriver &	ALWAYS_HIT = HIT_DRIVER
	This cache driver specialization generates a hit each time it is accessed. More...
static CacheDriver &	ALWAYS_MISS = MISS_DRIVER
	This cache driver specialization generates a miss each time it is accessed. More...

Detailed Description

This class provides a simple interface to drive the cache management unit of a simulator.

To implement a specialized driver, you have just to inherit from this class and override at least the access() function.

Many specialized driver are already provided in OTAWA. First, the stateless always-hit / always-miss driver accessible by the static fields CacheDriver::ALWAYS_HIT and CacheDriver::ALWAYS_MISS. There is also an abstract driver with specialization for replacement and write policies, AbstractCacheDriver.

Member Enumeration Documentation

enum otawa::sim::CacheDriver::action_t

This enumeration identifies the kind of cache access.

Enumerator
READ	A read is performed on the cache.
WRITE	A write is performed on the cache.

enum otawa::sim::CacheDriver::result_t

This enumeration allows to know the result of a cache access.

Enumerator
MISS	The result of a cache access produces a miss.
HIT	The result of a cache access produces a hit.

Constructor & Destructor Documentation

otawa::sim::CacheDriver::~CacheDriver ( void  )

virtual

Member Function Documentation

result_t otawa::sim::CacheDriver::access ( address_t  address, size_t  size, action_t  action  )

pure virtual

This function is called each time the cache is accessed.

It must be overload to specialize the cache behavior.

Parameters

address	Address of the accessed data.
size	Size of the accessed data.
action	Action performed.

Returns

HIT or MISS according presence of the block of data in the cache.

Implemented in otawa::sim::AbstractCacheDriver.

Member Data Documentation

CacheDriver & otawa::sim::CacheDriver::ALWAYS_HIT = HIT_DRIVER

static

This cache driver specialization generates a hit each time it is accessed.

CacheDriver & otawa::sim::CacheDriver::ALWAYS_MISS = MISS_DRIVER

static

This cache driver specialization generates a miss each time it is accessed.

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

• include/otawa/sim/CacheDriver.h
• src/prog/sim_CacheDriver.cpp