gem5::MemPool Class Reference

Class for handling allocation of physical pages in SE mode. More...

#include <mem_pool.hh>

Inheritance diagram for gem5::MemPool:

Public Member Functions
	MemPool (Addr page_shift, Addr ptr, Addr limit)
Counter	startPage () const
Counter	totalPages () const
Counter	allocatedPages () const
Counter	freePages () const
Addr	startAddr () const
Addr	allocatedBytes () const
Addr	freeBytes () const
Addr	totalBytes () const
Addr	allocate (Addr npages)
void	deallocate (Addr start, Addr npages)
void	serialize (CheckpointOut &cp) const override
	Serialize an object.
void	unserialize (CheckpointIn &cp) override
	Unserialize an object.
Public Member Functions inherited from gem5::Serializable
	Serializable ()
virtual	~Serializable ()
void	serializeSection (CheckpointOut &cp, const char *name) const
	Serialize an object into a new section.
void	serializeSection (CheckpointOut &cp, const std::string &name) const
void	unserializeSection (CheckpointIn &cp, const char *name)
	Unserialize an a child object.
void	unserializeSection (CheckpointIn &cp, const std::string &name)

Private Member Functions
	MemPool ()=default

Private Attributes
Addr	pageShift = 0
Counter	startPageNum = 0
	Start page of pool.
Counter	_totalPages = 0
	The size of the pool, in number of pages.
FreeList< Addr >	freePhysPages

Friends
class	MemPools

Additional Inherited Members
Static Public Member Functions inherited from gem5::Serializable
static const std::string &	currentSection ()
	Gets the fully-qualified name of the active section.
static void	generateCheckpointOut (const std::string &cpt_dir, std::ofstream &outstream)
	Generate a checkpoint file so that the serialization can be routed to it.

Detailed Description

Class for handling allocation of physical pages in SE mode.

Definition at line 46 of file mem_pool.hh.

Constructor & Destructor Documentation

MemPool() [1/2]

gem5::MemPool::MemPool ( )

privatedefault

MemPool() [2/2]

gem5::MemPool::MemPool	(	Addr	page_shift,
		Addr	ptr,
		Addr	limit )

Definition at line 40 of file mem_pool.cc.

References _totalPages, freePhysPages, gem5::X86ISA::limit, pageShift, and startPageNum.

Member Function Documentation

allocate()

Addr gem5::MemPool::allocate

(

Addr

npages

)

Definition at line 96 of file mem_pool.cc.

References fatal, freePhysPages, and pageShift.

allocatedBytes()

Addr gem5::MemPool::allocatedBytes

(

)

const

Definition at line 78 of file mem_pool.cc.

References allocatedPages(), and pageShift.

allocatedPages()

Counter gem5::MemPool::allocatedPages

(

)

const

Definition at line 60 of file mem_pool.cc.

References freePages(), and totalPages().

Referenced by allocatedBytes().

deallocate()

void gem5::MemPool::deallocate	(	Addr	start,
		Addr	npages )

Definition at line 105 of file mem_pool.cc.

References freePhysPages, and pageShift.

freeBytes()

Addr gem5::MemPool::freeBytes

(

)

const

Definition at line 84 of file mem_pool.cc.

References freePages(), and pageShift.

freePages()

Counter gem5::MemPool::freePages

(

)

const

Definition at line 66 of file mem_pool.cc.

References freePhysPages.

Referenced by allocatedPages(), and freeBytes().

serialize()

void gem5::MemPool::serialize ( CheckpointOut & cp ) const

overridevirtual

Serialize an object.

Output an object's state into the current checkpoint section.

Parameters

cp	Checkpoint state

Implements gem5::Serializable.

Definition at line 111 of file mem_pool.cc.

References _totalPages, gem5::csprintf(), freePhysPages, gem5::ArmISA::i, pageShift, gem5::paramOut(), and startPageNum.

startAddr()

Addr gem5::MemPool::startAddr

(

)

const

Definition at line 72 of file mem_pool.cc.

References pageShift, and startPage().

startPage()

Counter gem5::MemPool::startPage

(

)

const

Definition at line 48 of file mem_pool.cc.

References startPageNum.

Referenced by startAddr().

totalBytes()

Addr gem5::MemPool::totalBytes

(

)

const

Definition at line 90 of file mem_pool.cc.

References pageShift, and totalPages().

totalPages()

Counter gem5::MemPool::totalPages

(

)

const

Definition at line 54 of file mem_pool.cc.

References _totalPages.

Referenced by allocatedPages(), and totalBytes().

unserialize()

void gem5::MemPool::unserialize ( CheckpointIn & cp )

overridevirtual

Unserialize an object.

Read an object's state from the current checkpoint section.

Parameters

cp	Checkpoint state

Implements gem5::Serializable.

Definition at line 128 of file mem_pool.cc.

References _totalPages, gem5::RiscvISA::base, gem5::csprintf(), freePhysPages, gem5::ArmISA::i, gem5::ArmISA::n, gem5::optParamIn(), pageShift, gem5::paramIn(), startPageNum, and warn.

Friends And Related Symbol Documentation

MemPools

friend class MemPools

friend

Definition at line 61 of file mem_pool.hh.

References gem5::X86ISA::limit, and MemPools.

Referenced by MemPools.

Member Data Documentation

_totalPages

Counter gem5::MemPool::_totalPages = 0

private

The size of the pool, in number of pages.

Definition at line 55 of file mem_pool.hh.

Referenced by MemPool(), serialize(), totalPages(), and unserialize().

freePhysPages

FreeList<Addr> gem5::MemPool::freePhysPages

private

Definition at line 57 of file mem_pool.hh.

Referenced by allocate(), deallocate(), freePages(), MemPool(), serialize(), and unserialize().

pageShift

Addr gem5::MemPool::pageShift = 0

private

Definition at line 49 of file mem_pool.hh.

Referenced by allocate(), allocatedBytes(), deallocate(), freeBytes(), MemPool(), serialize(), startAddr(), totalBytes(), and unserialize().

startPageNum

Counter gem5::MemPool::startPageNum = 0

private

Start page of pool.

Definition at line 52 of file mem_pool.hh.

Referenced by MemPool(), serialize(), startPage(), and unserialize().

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

• sim/mem_pool.hh
• sim/mem_pool.cc