#include <MemorySegment.hpp>

Inheritance diagram for MemorySegmentSet:

Public Types
enum	SegmentSetID { SET_UNINITIALIZED , SET_NORMAL , SET_LARGEBLOCK , SET_OLDSPACE }

Public Member Functions
	MemorySegmentSet (RexxMemory memObject, SegmentSetID id, const char setName)

	MemorySegmentSet ()

virtual	~MemorySegmentSet ()

void *	operator new (size_t size, void *segment)

void	operator delete (void *size)

void	operator delete (void size, void segment)

void	removeSegment (MemorySegment *segment)

void	removeSegmentAndStorage (MemorySegment *segment)

void	add (MemorySegment *segment)

MemorySegment *	first ()

MemorySegment *	next (MemorySegment *segment)

bool	isInSegmentSet (RexxObject *object)

void	dumpSegments (FILE keyfile, FILE dumpfile)

void	addSegment (MemorySegment *segment, bool createDeadObject=1)

void	sweep ()

bool	is (SegmentSetID id)

void	gatherStats (MemoryStats memStats, SegmentStats stats)

virtual void	dumpMemoryProfile (FILE *outfile)

virtual DeadObject *	donateObject (size_t allocationLength)

virtual MemorySegment *	donateSegment (size_t allocationLength)

Protected Member Functions
virtual void	collectEmptySegments ()

virtual void	addDeadObject (DeadObject *object)

virtual void	addDeadObject (char *object, size_t length)

RexxObject *	splitDeadObject (DeadObject *object, size_t allocationLength, size_t splitMinimum)

void	insertSegment (MemorySegment *segment)

MemorySegment *	findEmptySegment (size_t allocationLength)

MemorySegment *	splitSegment (size_t allocationLength)

void	mergeSegments (size_t allocationLength)

void	combineEmptySegments (MemorySegment front, MemorySegment back)

virtual size_t	suggestMemoryExpansion ()

virtual size_t	suggestMemoryContraction ()

virtual void	prepareForSweep ()

virtual void	completeSweepOperation ()

MemorySegment *	largestActiveSegment ()

MemorySegment *	largestEmptySegment ()

void	adjustMemorySize ()

void	releaseEmptySegments (size_t releaseSize)

void	releaseSegment (MemorySegment *segment)

bool	newSegment (size_t requestLength, size_t minimumLength)

virtual MemorySegment *	allocateSegment (size_t requestLength, size_t minimumLength)

float	freeMemoryPercentage ()

size_t	totalFreeMemory ()

size_t	calculateSegmentAllocation (size_t n)

void	addSegments (size_t requiredSpace)

MemorySegment *	getSegment (size_t requestLength, size_t minimumLength)

void	activateEmptySegments ()

void	validateObject (size_t bytes)

Protected Attributes
MemorySegment	anchor

MemorySegment	emptySegments

size_t	count

size_t	liveObjectBytes

size_t	deadObjectBytes

SegmentSetID	owner

const char *	name

RexxMemory *	memory

Friends
class	RexxMemory

Detailed Description

Definition at line 227 of file MemorySegment.hpp.

Member Enumeration Documentation

◆ SegmentSetID

enum MemorySegmentSet::SegmentSetID

Enumerator
SET_UNINITIALIZED
SET_NORMAL
SET_LARGEBLOCK
SET_OLDSPACE

Definition at line 231 of file MemorySegment.hpp.

Constructor & Destructor Documentation

◆ MemorySegmentSet() [1/2]

MemorySegmentSet::MemorySegmentSet	(	RexxMemory *	memObject,
		SegmentSetID	id,
		const char *	setName
	)

inline

Definition at line 233 of file MemorySegment.hpp.

References count, memory, name, and owner.

◆ MemorySegmentSet() [2/2]

MemorySegmentSet::MemorySegmentSet ( )

inline

Definition at line 243 of file MemorySegment.hpp.

References count, memory, owner, and SET_UNINITIALIZED.

◆ ~MemorySegmentSet()

virtual MemorySegmentSet::~MemorySegmentSet ( )

inlinevirtual

Definition at line 251 of file MemorySegment.hpp.

Member Function Documentation

◆ activateEmptySegments()

void MemorySegmentSet::activateEmptySegments ( )

protected

Definition at line 310 of file MemorySegment.cpp.

References addSegment(), emptySegments, MemorySegment::isReal(), MemorySegmentHeader::next, and MemorySegment::remove().

Referenced by LargeSegmentSet::expandOrCollect().

◆ add()

void MemorySegmentSet::add ( MemorySegment * segment )

inline

Definition at line 273 of file MemorySegment.hpp.

References anchor, count, and MemorySegment::insertBefore().

◆ addDeadObject() [1/2]

void MemorySegmentSet::addDeadObject	(	char *	object,
		size_t	length
	)

protectedvirtual

Reimplemented in NormalSegmentSet, LargeSegmentSet, and OldSpaceSegmentSet.

Definition at line 408 of file MemorySegment.cpp.

◆ addDeadObject() [2/2]

void MemorySegmentSet::addDeadObject ( DeadObject * object )

protectedvirtual

Reimplemented in NormalSegmentSet, LargeSegmentSet, and OldSpaceSegmentSet.

Definition at line 350 of file MemorySegment.cpp.

Referenced by addSegment(), combineEmptySegments(), mergeSegments(), RexxMemory::scavengeSegmentSets(), splitDeadObject(), and sweep().

◆ addSegment()

void MemorySegmentSet::addSegment	(	MemorySegment *	segment,
		bool	createDeadObject = `1`
	)

◆ addSegments()

void MemorySegmentSet::addSegments ( size_t requiredSpace )

protected

Definition at line 956 of file MemorySegment.cpp.

References addSegment(), allocateSegment(), calculateSegmentAllocation(), LargeSegmentDeadSpace, SegmentDeadSpace, and MemorySegment::size().

Referenced by adjustMemorySize(), NormalSegmentSet::getInitialSet(), and NormalSegmentSet::handleAllocationFailure().

◆ adjustMemorySize()

void MemorySegmentSet::adjustMemorySize ( )

protected

Definition at line 872 of file MemorySegment.cpp.

References addSegments(), memory, suggestMemoryExpansion(), and RexxMemory::verboseMessage().

Referenced by NormalSegmentSet::handleAllocationFailure().

◆ allocateSegment()

MemorySegment * MemorySegmentSet::allocateSegment	(	size_t	requestLength,
		size_t	minimumLength
	)

protectedvirtual

Reimplemented in LargeSegmentSet.

Definition at line 249 of file MemorySegment.cpp.

References memory, and RexxMemory::newSegment().

Referenced by addSegments(), getSegment(), and newSegment().

◆ calculateSegmentAllocation()

size_t MemorySegmentSet::calculateSegmentAllocation ( size_t n )

inlineprotected

Definition at line 346 of file MemorySegment.hpp.

References MemorySegmentOverhead, roundSegmentBoundary(), and SegmentSize.

Referenced by addSegments().

◆ collectEmptySegments()

void MemorySegmentSet::collectEmptySegments ( )

protectedvirtual

Definition at line 1181 of file MemorySegment.cpp.

◆ combineEmptySegments()

void MemorySegmentSet::combineEmptySegments	(	MemorySegment *	front,
		MemorySegment *	back
	)

protected

Definition at line 1672 of file MemorySegment.cpp.

References addDeadObject(), MemorySegment::combine(), MemorySegment::createDeadObject(), MemorySegment::firstObject(), memory, DeadObject::remove(), removeSegment(), MemorySegment::size(), and RexxMemory::verboseMessage().

Referenced by mergeSegments().

◆ completeSweepOperation()

void MemorySegmentSet::completeSweepOperation ( )

protectedvirtual

Reimplemented in NormalSegmentSet, and LargeSegmentSet.

Definition at line 1046 of file MemorySegment.cpp.

Referenced by sweep().

◆ donateObject()

DeadObject * MemorySegmentSet::donateObject ( size_t allocationLength )

virtual

Reimplemented in NormalSegmentSet, and LargeSegmentSet.

Definition at line 518 of file MemorySegment.cpp.

Referenced by RexxMemory::scavengeSegmentSets().

◆ donateSegment()

MemorySegment * MemorySegmentSet::donateSegment ( size_t allocationLength )

virtual

Definition at line 558 of file MemorySegment.cpp.

References findEmptySegment(), and splitSegment().

Referenced by RexxMemory::scavengeSegmentSets().

◆ dumpMemoryProfile()

void MemorySegmentSet::dumpMemoryProfile ( FILE * outfile )

virtual

Reimplemented in NormalSegmentSet, and LargeSegmentSet.

Definition at line 134 of file MemorySegment.cpp.

◆ dumpSegments()

void MemorySegmentSet::dumpSegments	(	FILE *	keyfile,
		FILE *	dumpfile
	)

Definition at line 120 of file MemorySegment.cpp.

References MemorySegment::dump(), first(), name, and next().

Referenced by RexxMemory::dump().

◆ findEmptySegment()

MemorySegment * MemorySegmentSet::findEmptySegment ( size_t allocationLength )

protected

Definition at line 289 of file MemorySegment.cpp.

References emptySegments, MemorySegment::isReal(), MemorySegmentHeader::next, MemorySegment::remove(), and MemorySegment::size().

Referenced by donateSegment(), LargeSegmentSet::expandOrCollect(), and getSegment().

◆ first()

MemorySegment* MemorySegmentSet::first ( )

inline

Definition at line 278 of file MemorySegment.hpp.

References anchor, MemorySegment::isReal(), and MemorySegmentHeader::next.

Referenced by dumpSegments(), gatherStats(), isInSegmentSet(), OldSpaceSegmentSet::markOldSpaceObjects(), releaseEmptySegments(), splitSegment(), and sweep().

◆ freeMemoryPercentage()

float MemorySegmentSet::freeMemoryPercentage ( )

inlineprotected

Definition at line 342 of file MemorySegment.hpp.

References deadObjectBytes, and liveObjectBytes.

Referenced by NormalSegmentSet::suggestMemoryContraction(), and NormalSegmentSet::suggestMemoryExpansion().

◆ gatherStats()

void MemorySegmentSet::gatherStats	(	MemoryStats *	memStats,
		SegmentStats *	stats
	)

Definition at line 1756 of file MemorySegment.cpp.

References count, SegmentStats::count, first(), MemorySegment::gatherObjectStats(), SegmentStats::largestSegment, Numerics::maxVal(), next(), MemorySegment::size(), and SegmentStats::smallestSegment.

Referenced by RexxMemory::dumpImageStats().

◆ getSegment()

MemorySegment * MemorySegmentSet::getSegment	(	size_t	requestLength,
		size_t	minimumLength
	)

protected

Definition at line 267 of file MemorySegment.cpp.

References allocateSegment(), and findEmptySegment().

◆ insertSegment()

void MemorySegmentSet::insertSegment ( MemorySegment * segment )

protected

◆ is()

bool MemorySegmentSet::is ( SegmentSetID id )

inline

Definition at line 311 of file MemorySegment.hpp.

References owner.

Referenced by RexxMemory::scavengeSegmentSets().

◆ isInSegmentSet()

bool MemorySegmentSet::isInSegmentSet ( RexxObject * object )

inline

Definition at line 296 of file MemorySegment.hpp.

References first(), MemorySegment::isInSegment(), and next().

Referenced by RexxMemory::inSharedObjectStorage().

◆ largestActiveSegment()

MemorySegment * MemorySegmentSet::largestActiveSegment ( )

protected

Definition at line 1429 of file MemorySegment.cpp.

References anchor, MemorySegment::isReal(), MemorySegmentHeader::next, and MemorySegment::size().

Referenced by LargeSegmentSet::expandOrCollect(), and mergeSegments().

◆ largestEmptySegment()

MemorySegment * MemorySegmentSet::largestEmptySegment ( )

protected

Definition at line 1451 of file MemorySegment.cpp.

References emptySegments, MemorySegment::isReal(), MemorySegmentHeader::next, and MemorySegment::size().

Referenced by LargeSegmentSet::expandOrCollect().

◆ mergeSegments()

void MemorySegmentSet::mergeSegments ( size_t allocationLength )

protected

◆ newSegment()

bool MemorySegmentSet::newSegment	(	size_t	requestLength,
		size_t	minimumLength
	)

protected

Definition at line 332 of file MemorySegment.cpp.

References addSegment(), and allocateSegment().

Referenced by OldSpaceSegmentSet::allocateObject(), and LargeSegmentSet::expandSegmentSet().

◆ next()

MemorySegment* MemorySegmentSet::next ( MemorySegment * segment )

inline

Definition at line 287 of file MemorySegment.hpp.

References MemorySegment::isReal(), and MemorySegmentHeader::next.

Referenced by dumpSegments(), gatherStats(), isInSegmentSet(), OldSpaceSegmentSet::markOldSpaceObjects(), releaseEmptySegments(), splitSegment(), and sweep().

◆ operator delete() [1/2]

void MemorySegmentSet::operator delete ( void * size )

inline

Definition at line 253 of file MemorySegment.hpp.

◆ operator delete() [2/2]

void MemorySegmentSet::operator delete	(	void *	size,
		void *	segment
	)

inline

Definition at line 254 of file MemorySegment.hpp.

◆ operator new()

void* MemorySegmentSet::operator new	(	size_t	size,
		void *	segment
	)

inline

Definition at line 252 of file MemorySegment.hpp.

◆ prepareForSweep()

void MemorySegmentSet::prepareForSweep ( )

protectedvirtual

Reimplemented in NormalSegmentSet, and LargeSegmentSet.

Definition at line 1003 of file MemorySegment.cpp.

References deadObjectBytes, and liveObjectBytes.

Referenced by NormalSegmentSet::prepareForSweep(), LargeSegmentSet::prepareForSweep(), and sweep().

◆ releaseEmptySegments()

void MemorySegmentSet::releaseEmptySegments ( size_t releaseSize )

protected

Definition at line 915 of file MemorySegment.cpp.

References first(), MemorySegment::isEmpty(), next(), MemorySegmentHeader::previous, releaseSegment(), removeSegmentAndStorage(), roundSegmentBoundary(), and MemorySegment::size().

◆ releaseSegment()

void MemorySegmentSet::releaseSegment ( MemorySegment * segment )

protected

Definition at line 947 of file MemorySegment.cpp.

References count, emptySegments, and MemorySegment::insertBefore().

Referenced by releaseEmptySegments().

◆ removeSegment()

void MemorySegmentSet::removeSegment ( MemorySegment * segment )

inline

Definition at line 259 of file MemorySegment.hpp.

References count, and MemorySegment::remove().

Referenced by combineEmptySegments(), mergeSegments(), and splitSegment().

◆ removeSegmentAndStorage()

void MemorySegmentSet::removeSegmentAndStorage ( MemorySegment * segment )

inline

Definition at line 266 of file MemorySegment.hpp.

References count, and MemorySegment::removeAll().

Referenced by releaseEmptySegments().

◆ splitDeadObject()

RexxObject * MemorySegmentSet::splitDeadObject	(	DeadObject *	object,
		size_t	allocationLength,
		size_t	splitMinimum
	)

protected

Definition at line 1190 of file MemorySegment.cpp.

References addDeadObject(), and RexxInternalObject::getObjectSize().

Referenced by LargeSegmentSet::allocateObject(), NormalSegmentSet::findLargeDeadObject(), and OldSpaceSegmentSet::findObject().

◆ splitSegment()

MemorySegment * MemorySegmentSet::splitSegment ( size_t allocationLength )

protected

Definition at line 578 of file MemorySegment.cpp.

References addSegment(), MemorySegment::end(), first(), RexxInternalObject::getObjectSize(), MemorySegment::isFirstBlock(), MemorySegment::isLastBlock(), RexxMemory::markWord, MaximumObjectSize, memoryObject, MemorySegmentOverhead, MinimumSegmentSize, next(), MemorySegment::realSize(), DeadObject::remove(), removeSegment(), MemorySegment::shrink(), MemorySegment::size(), and MemorySegment::start().

Referenced by donateSegment().

◆ suggestMemoryContraction()

size_t MemorySegmentSet::suggestMemoryContraction ( )

protectedvirtual

Reimplemented in NormalSegmentSet.

Definition at line 831 of file MemorySegment.cpp.

◆ suggestMemoryExpansion()

size_t MemorySegmentSet::suggestMemoryExpansion ( )

protectedvirtual

Reimplemented in NormalSegmentSet.

Definition at line 817 of file MemorySegment.cpp.

Referenced by adjustMemorySize().

◆ sweep()

void MemorySegmentSet::sweep ( )

Definition at line 1106 of file MemorySegment.cpp.

References addDeadObject(), completeSweepOperation(), deadObjectBytes, MemorySegment::end(), first(), liveObjectBytes, MemorySegmentHeader::liveObjects, RexxMemory::markWord, memoryObject, next(), objectIsLive(), objectIsNotLive(), prepareForSweep(), MemorySegment::start(), and validateObject().

Referenced by RexxMemory::collect().

◆ totalFreeMemory()

size_t MemorySegmentSet::totalFreeMemory ( )

inlineprotected

Definition at line 343 of file MemorySegment.hpp.

References deadObjectBytes, and liveObjectBytes.

Referenced by NormalSegmentSet::suggestMemoryContraction().

◆ validateObject()

void MemorySegmentSet::validateObject ( size_t bytes )

inlineprotected

Definition at line 361 of file MemorySegment.hpp.

Referenced by sweep().

Friends And Related Function Documentation

◆ RexxMemory

friend class RexxMemory

friend

Definition at line 228 of file MemorySegment.hpp.

Member Data Documentation

◆ anchor

MemorySegment MemorySegmentSet::anchor

protected

Definition at line 368 of file MemorySegment.hpp.

Referenced by add(), addSegment(), first(), largestActiveSegment(), and mergeSegments().

◆ count

size_t MemorySegmentSet::count

protected

Definition at line 370 of file MemorySegment.hpp.

Referenced by add(), gatherStats(), MemorySegmentSet(), releaseSegment(), removeSegment(), and removeSegmentAndStorage().

◆ deadObjectBytes

size_t MemorySegmentSet::deadObjectBytes

protected

Definition at line 372 of file MemorySegment.hpp.

Referenced by freeMemoryPercentage(), prepareForSweep(), NormalSegmentSet::suggestMemoryExpansion(), sweep(), and totalFreeMemory().

◆ emptySegments

MemorySegment MemorySegmentSet::emptySegments

protected

Definition at line 369 of file MemorySegment.hpp.

Referenced by activateEmptySegments(), findEmptySegment(), largestEmptySegment(), and releaseSegment().

◆ liveObjectBytes

size_t MemorySegmentSet::liveObjectBytes

protected

Definition at line 371 of file MemorySegment.hpp.

Referenced by freeMemoryPercentage(), prepareForSweep(), NormalSegmentSet::recommendedMaximumMemorySize(), NormalSegmentSet::recommendedMemorySize(), NormalSegmentSet::suggestMemoryExpansion(), sweep(), and totalFreeMemory().

◆ memory

RexxMemory* MemorySegmentSet::memory

protected

Definition at line 375 of file MemorySegment.hpp.

Referenced by addSegment(), adjustMemorySize(), allocateSegment(), LargeSegmentSet::allocateSegment(), combineEmptySegments(), LargeSegmentSet::completeSweepOperation(), LargeSegmentSet::expandOrCollect(), LargeSegmentSet::expandSegmentSet(), NormalSegmentSet::handleAllocationFailure(), LargeSegmentSet::handleAllocationFailure(), MemorySegmentSet(), mergeSegments(), NormalSegmentSet::NormalSegmentSet(), and NormalSegmentSet::suggestMemoryExpansion().

◆ name

const char* MemorySegmentSet::name

protected

Definition at line 374 of file MemorySegment.hpp.

Referenced by dumpSegments(), and MemorySegmentSet().

◆ owner

SegmentSetID MemorySegmentSet::owner

protected

Definition at line 373 of file MemorySegment.hpp.

Referenced by is(), and MemorySegmentSet().

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

Public Types

Public Member Functions

Protected Member Functions

Protected Attributes

Friends

Detailed Description

Member Enumeration Documentation

◆ SegmentSetID

Constructor & Destructor Documentation

◆ MemorySegmentSet() [1/2]

◆ MemorySegmentSet() [2/2]

◆ ~MemorySegmentSet()

Member Function Documentation

◆ activateEmptySegments()

◆ add()

◆ addDeadObject() [1/2]

◆ addDeadObject() [2/2]

◆ addSegment()

◆ addSegments()

◆ adjustMemorySize()

◆ allocateSegment()

◆ calculateSegmentAllocation()

◆ collectEmptySegments()

◆ combineEmptySegments()

◆ completeSweepOperation()

◆ donateObject()

◆ donateSegment()

◆ dumpMemoryProfile()

◆ dumpSegments()

◆ findEmptySegment()

◆ first()

◆ freeMemoryPercentage()

◆ gatherStats()

◆ getSegment()

◆ insertSegment()

◆ is()

◆ isInSegmentSet()

◆ largestActiveSegment()

◆ largestEmptySegment()

◆ mergeSegments()

◆ newSegment()

◆ next()

◆ operator delete() [1/2]

◆ operator delete() [2/2]

◆ operator new()

◆ prepareForSweep()

◆ releaseEmptySegments()

◆ releaseSegment()

◆ removeSegment()

◆ removeSegmentAndStorage()

◆ splitDeadObject()

◆ splitSegment()

◆ suggestMemoryContraction()

◆ suggestMemoryExpansion()

◆ sweep()

◆ totalFreeMemory()

◆ validateObject()

Friends And Related Function Documentation

◆ RexxMemory

Member Data Documentation

◆ anchor

◆ count

◆ deadObjectBytes

◆ emptySegments

◆ liveObjectBytes

◆ memory

◆ name

◆ owner