MemoryManager Class Reference

This class defines a few utility functions common to DDD. More...

#include <MemoryManager.h>

Collaboration diagram for MemoryManager:

Static Public Member Functions
static unsigned int	nbDDD ()
	Returns the size of the unicity table for DDD.
static unsigned int	nbDED ()
	Returns the size of the cache unicity table for DDD.
static unsigned int	nbHom ()
	Returns the size of the unicity table for DDD Homomorphisms.
static unsigned int	nbSDD ()
	Returns the size of the unicity table for SDD.
static unsigned int	nbSDED ()
	Returns the size of the cache unicity table for SDD.
static unsigned int	nbShom ()
	Returns the size of the unicity table for SDD Homomorphisms.
static void	mark (const GDDD &g)
	Convenience function to mark a node as non collectible.
static void	mark (const GHom &h)
	Convenience function to mark a Hom as non collectible.
static bool	should_garbage ()
	tester for memory management routine triggering in a top level fixpoint
static void	garbage ()
	Garbage collection function.
static void	pstats (bool reinit=true)
	Prints some statistics about use of unicity tables, also reinitializes peak sizes.
static void	setGCThreshold (size_t nbKbyte)
static size_t	getPeakMemory ()
static void	addHook (GCHook *hook)

Private Types
typedef std::vector< GCHook * >	hooks_t
typedef hooks_t::iterator	hooks_it

Static Private Attributes
static hooks_t	hooks_ = MemoryManager::hooks_t()
static size_t	last_mem = 1300000

Detailed Description

This class defines a few utility functions common to DDD.

Note that all functions are declared static, so this is more of a namespace than a class. One important function is garbage(), only this MemoryManager::garbage() should be caled : avoid GHom::garbage(), DED::garbage(), GDDD::garbage() (and SDD versions of the same, they should not be called directly.

Member Typedef Documentation

hooks_it

typedef hooks_t::iterator MemoryManager::hooks_it

private

hooks_t

typedef std::vector<GCHook*> MemoryManager::hooks_t

private

Member Function Documentation

addHook()

static void MemoryManager::addHook ( GCHook *  hook )

inlinestatic

References hooks_.

garbage()

static void MemoryManager::garbage ( )

inlinestatic

Garbage collection function.

Call this to reclaim intermediate nodes, unused operations and related cache. Note that this function is quite costly, and it totally destroys the cache

References GDDD::garbage(), DED::garbage(), GHom::garbage(), IntDataSet::garbage(), MLHom::garbage(), GSDD::garbage(), SDED::garbage(), GShom::garbage(), and hooks_.

Referenced by Fixpoint::eval(), and sns::Fixpoint::eval().

getPeakMemory()

static size_t MemoryManager::getPeakMemory ( )

inlinestatic

References last_mem, and should_garbage().

mark() [1/2]

static void MemoryManager::mark ( const GDDD &  g )

inlinestatic

Convenience function to mark a node as non collectible.

Todo:

: track usage and check whether this is useful, SDD version undefined.

References GDDD::mark().

mark() [2/2]

static void MemoryManager::mark ( const GHom &  h )

inlinestatic

Convenience function to mark a Hom as non collectible.

Todo:

: track usage and check whether this is useful, SDD version undefined.

References GHom::mark().

nbDDD()

static unsigned int MemoryManager::nbDDD ( )

inlinestatic

Returns the size of the unicity table for DDD.

References GDDD::statistics().

nbDED()

static unsigned int MemoryManager::nbDED ( )

inlinestatic

Returns the size of the cache unicity table for DDD.

References DED::statistics().

nbHom()

static unsigned int MemoryManager::nbHom ( )

inlinestatic

Returns the size of the unicity table for DDD Homomorphisms.

References GHom::statistics().

nbSDD()

static unsigned int MemoryManager::nbSDD ( )

inlinestatic

Returns the size of the unicity table for SDD.

References GSDD::statistics().

nbSDED()

static unsigned int MemoryManager::nbSDED ( )

inlinestatic

Returns the size of the cache unicity table for SDD.

References SDED::statistics().

nbShom()

static unsigned int MemoryManager::nbShom ( )

inlinestatic

Returns the size of the unicity table for SDD Homomorphisms.

References GShom::statistics().

pstats()

static void MemoryManager::pstats ( bool  reinit = true )

inlinestatic

Prints some statistics about use of unicity tables, also reinitializes peak sizes.

References GDDD::pstats(), DED::pstats(), GHom::pstats(), GSDD::pstats(), SDED::pstats(), and GShom::pstats().

setGCThreshold()

static void MemoryManager::setGCThreshold ( size_t  nbKbyte )

inlinestatic

References last_mem.

should_garbage()

static bool MemoryManager::should_garbage ( )

inlinestatic

tester for memory management routine triggering in a top level fixpoint

References process::getResidentMemory(), and last_mem.

Referenced by Fixpoint::eval(), sns::Fixpoint::eval(), and getPeakMemory().

Member Data Documentation

hooks_

MemoryManager::hooks_t MemoryManager::hooks_ = MemoryManager::hooks_t()

staticprivate

Referenced by addHook(), and garbage().

last_mem

size_t MemoryManager::last_mem = 1300000

staticprivate

Referenced by getPeakMemory(), setGCThreshold(), and should_garbage().

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

• MemoryManager.h
• DDD.cpp