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PsnMomeWeakMemoryManager Class Reference

isn't used anymore More...

#include <PsnMomeWeakMemoryManager.h>

Inheritance diagram for PsnMomeWeakMemoryManager:

[legend]Collaboration diagram for PsnMomeWeakMemoryManager:

[legend]List of all members.

Public Methods
	PsnMomeWeakMemoryManager (void *startDsm, size_t sizeDsm, size_t pageSize, PsnUniqueCreator *creator)
	A n'appeler qu'en exclusion mutuelle sur la zone mémoire gérée par PsnMemoryElementDescriptor::myMemoryManager.
virtual	~PsnMomeWeakMemoryManager ()
	destructeur
virtual void *	mmalloc (size_t size)
	allocation d'une zone de mémoire dans la zone de mémoire à cohérance relachée.
virtual int	mfree (void *addr, size_t size)
	free the memory at addr.
virtual PsnMemoryElementDescriptor *	getFreeMem ()
	redefine getFreeMem so as to get the address of the list of the free elements of this memory manager
virtual void	setFreeMem (PsnMemoryElementDescriptor *ptr)
	redefine setFreeMem to change the fisrt element of the list of free elements for this memory manager
virtual void	sync ()
	Synchronize the memory managed by the memory manager, in a relaxed fashion : any memory page marked as relaxed is synchronized only to an older version (the one available at the last barrier).
virtual void	strongSync ()
	Strong synchronisation of all memory pages where memory has been allocated.
virtual void *	get_from_free (size_t size)
	la zone de mémoire dans lesquels sont stockés les PsnMemoryElementDescriptor doit être vérouillée avant l'appel à cette fonction.
virtual void	add_in_free (void *addr, size_t size)
	la zone de mémoire dans lesquels sont stockés les PsnMemoryElementDescriptor doit être vérouillée avant l'appel à cette fonction
virtual void	showMemory (void)
	pour cause de Debug, montrer l'état de la mémoire
Protected Types
enum	coheranceType { None, Strong, Relaxed }
	le type enuméré gérant la cohérance de la page More...
Protected Methods
virtual void	divideBlockFor (size_t size)
	divide a free block between a part starting on a free page and the rest
bool	hasCorrectAccessRights (unsigned int addr)
	Make sure a memory zone spawns pages with correct access rights.
Protected Attributes
coheranceType *	tabCoherance
	La table, a allouer dans la mémoire partagée, de la cohérance à avoir pour chaque page.
const PsName **	tabOwner
	le tableau des propriétaires de pages (on ne connait sa taille qu'à la création
CurrentAllocator::accessRights *	tabDroits
	le tableau de l'état de la page vu par le processus local
size_t	numberOfPages
	le nombre de pages gérée
list< unsigned int >	toBeRelaxed [2]
	double buffer of the list of pages whose coherance needs to be relaxed after the next sync
list< unsigned int >	toBeFreed [2]
	double buffer of the list of pages who have to be freed after the next sync
int	currentRelaxedToken
	index of the list to be used at the next sync to know the page numbers to be relaxed after the next sync
int	currentFreableToken
	index of the list to be used at the next sync to know the page numbers to be freed
unsigned int	maxAllocatedPage
	max of page numbers where memory is allocated (unused because unshared)
Friends
class	PsnUniqueCreator
	pour que le createur {PsnUniqueCreator} connaisse le type enumeré

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Detailed Description

isn't used anymore

Author:

basé sur un code fournit par Renaud Lottiaux.

Version:

0.1

Definition at line 33 of file PsnMomeWeakMemoryManager.h.

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Member Enumeration Documentation

enum PsnMomeWeakMemoryManager::coheranceType [protected]

le type enuméré gérant la cohérance de la page Enumeration values: None  Strong  Relaxed  Definition at line 69 of file PsnMomeWeakMemoryManager.h. { None , Strong , Relaxed } ;

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Constructor & Destructor Documentation

PsnMomeWeakMemoryManager::PsnMomeWeakMemoryManager (  void *    startDsm, size_t    sizeDsm, size_t    pageSize, PsnUniqueCreator *    creator )

A n'appeler qu'en exclusion mutuelle sur la zone mémoire gérée par PsnMemoryElementDescriptor::myMemoryManager.

virtual PsnMomeWeakMemoryManager::~PsnMomeWeakMemoryManager (    )  [virtual]

destructeur

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Member Function Documentation

virtual void PsnMomeWeakMemoryManager::add_in_free (  void *    addr, size_t    size )  [virtual]

la zone de mémoire dans lesquels sont stockés les PsnMemoryElementDescriptor doit être vérouillée avant l'appel à cette fonction Reimplemented from PsnMomeMemoryManager.

virtual void PsnMomeWeakMemoryManager::divideBlockFor (  size_t    size )  [protected, virtual]

divide a free block between a part starting on a free page and the rest Reimplemented from PsnMomeMemoryManager.

virtual void* PsnMomeWeakMemoryManager::get_from_free (  size_t    size )  [virtual]

la zone de mémoire dans lesquels sont stockés les PsnMemoryElementDescriptor doit être vérouillée avant l'appel à cette fonction. Reimplemented from PsnMomeMemoryManager.

virtual PsnMemoryElementDescriptor* PsnMomeWeakMemoryManager::getFreeMem (    )  [virtual]

redefine getFreeMem so as to get the address of the list of the free elements of this memory manager Returns: the address of the first element of the list. Reimplemented from PsnMomeMemoryManager.

bool PsnMomeWeakMemoryManager::hasCorrectAccessRights (  unsigned int    addr )  [inline, protected]

Make sure a memory zone spawns pages with correct access rights. You can only allocated memory if the page is marked non allocated or strong allocated but with access rights not to be relaxed after the next sync. If memory in the page has allready been partially allocated (it isn't free in tabDroits), the current allocator must be the same one as the previous one.

virtual int PsnMomeWeakMemoryManager::mfree (  void *    addr, size_t    size )  [virtual]

free the memory at addr. Does all the bookkeeping so as to free any page which becomes totally free. Parameters: addr  adress of the memory to be freed size  size of the memory to be freed. Reimplemented from PsnMomeMemoryManager.

virtual void* PsnMomeWeakMemoryManager::mmalloc (  size_t    size )  [virtual]

allocation d'une zone de mémoire dans la zone de mémoire à cohérance relachée. En plus de l'appel à mmalloc de l'ancêtre, this method marks the pages allocated in the different page tables. In particular, any pages allocated for the first time by this method, is marked so as at the next sync on any process, the last version of the page is asked for. Reimplemented from PsnMomeMemoryManager.

virtual void PsnMomeWeakMemoryManager::setFreeMem (  PsnMemoryElementDescriptor *    ptr )  [virtual]

redefine setFreeMem to change the fisrt element of the list of free elements for this memory manager Parameters: ptr  address of the new first element of this list Reimplemented from PsnMomeMemoryManager.

virtual void PsnMomeWeakMemoryManager::showMemory (  void    )  [virtual]

pour cause de Debug, montrer l'état de la mémoire Reimplemented from PsnMomeMemoryManager.

virtual void PsnMomeWeakMemoryManager::strongSync (    )  [virtual]

Strong synchronisation of all memory pages where memory has been allocated. This calls a synchronization barrier, ans then asks for the last version of the pages available at the time of the barrier.

virtual void PsnMomeWeakMemoryManager::sync (    )  [virtual]

Synchronize the memory managed by the memory manager, in a relaxed fashion : any memory page marked as relaxed is synchronized only to an older version (the one available at the last barrier). A synchronisation barrier is then made between all processes and all the memory pages mark as strong are synchronized to the version available at the time of the synchronization barrier, and prefetched.

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Friends And Related Function Documentation

friend class PsnUniqueCreator [friend]

pour que le createur {PsnUniqueCreator} connaisse le type enumeré Definition at line 67 of file PsnMomeWeakMemoryManager.h.

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Member Data Documentation

int PsnMomeWeakMemoryManager::currentFreableToken [protected]

index of the list to be used at the next sync to know the page numbers to be freed Definition at line 89 of file PsnMomeWeakMemoryManager.h.

int PsnMomeWeakMemoryManager::currentRelaxedToken [protected]

index of the list to be used at the next sync to know the page numbers to be relaxed after the next sync Definition at line 87 of file PsnMomeWeakMemoryManager.h.

unsigned int PsnMomeWeakMemoryManager::maxAllocatedPage [protected]

max of page numbers where memory is allocated (unused because unshared) Definition at line 91 of file PsnMomeWeakMemoryManager.h.

size_t PsnMomeWeakMemoryManager::numberOfPages [protected]

le nombre de pages gérée Definition at line 79 of file PsnMomeWeakMemoryManager.h.

coheranceType* PsnMomeWeakMemoryManager::tabCoherance [protected]

La table, a allouer dans la mémoire partagée, de la cohérance à avoir pour chaque page. Definition at line 71 of file PsnMomeWeakMemoryManager.h.

CurrentAllocator::accessRights* PsnMomeWeakMemoryManager::tabDroits [protected]

le tableau de l'état de la page vu par le processus local Definition at line 77 of file PsnMomeWeakMemoryManager.h.

const PsName* * PsnMomeWeakMemoryManager::tabOwner [protected]

le tableau des propriétaires de pages (on ne connait sa taille qu'à la création Definition at line 75 of file PsnMomeWeakMemoryManager.h.

list<unsigned int> PsnMomeWeakMemoryManager::toBeFreed[ 2 ] [protected]

double buffer of the list of pages who have to be freed after the next sync Definition at line 85 of file PsnMomeWeakMemoryManager.h.

list<unsigned int> PsnMomeWeakMemoryManager::toBeRelaxed[ 2 ] [protected]

double buffer of the list of pages whose coherance needs to be relaxed after the next sync Definition at line 83 of file PsnMomeWeakMemoryManager.h.

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

• PsnMomeWeakMemoryManager.h

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