spot  0.8.3
Public Member Functions | Protected Types | Protected Member Functions | Protected Attributes
spot::free_list Class Reference

Manage list of free integers. More...

#include <misc/freelist.hh>

Inheritance diagram for spot::free_list:
Inheritance graph
[legend]

List of all members.

Public Member Functions

virtual ~free_list ()
int register_n (int n)
 Find n consecutive integers.
void release_n (int base, int n)
 Release n consecutive integers starting at base.
std::ostream & dump_free_list (std::ostream &os) const
 Dump the list to os for debugging.
void insert (int base, int n)
 Extend the list by inserting a new pos-lenght pair.
void remove (int base, int n=0)
 Remove n consecutive entries from the list, starting at base.
int free_count () const
 Return the number of free integers on the list.

Protected Types

typedef std::pair< int, int > pos_lenght_pair
 Such pairs describe second free integer starting at first.
typedef std::list
< pos_lenght_pair
free_list_type

Protected Member Functions

virtual int extend (int n)=0
void remove (free_list_type::iterator i, int base, int n)
 Remove n consecutive entries from the list, starting at base.

Protected Attributes

free_list_type fl
 Tracks unused BDD variables.

Detailed Description

Manage list of free integers.


Member Typedef Documentation

typedef std::list<pos_lenght_pair> spot::free_list::free_list_type [protected]
typedef std::pair<int, int> spot::free_list::pos_lenght_pair [protected]

Such pairs describe second free integer starting at first.


Constructor & Destructor Documentation

virtual spot::free_list::~free_list ( ) [virtual]

Member Function Documentation

std::ostream& spot::free_list::dump_free_list ( std::ostream &  os) const

Dump the list to os for debugging.

virtual int spot::free_list::extend ( int  n) [protected, pure virtual]

Allocate n integer.

This function is called by register_n() when the free list is empty or if n consecutive integers could not be found. It should allocate more integers, possibly changing the list, and return the first integer on a range of n consecutive integer requested by the user.

Implemented in spot::bdd_dict::anon_free_list, and spot::bdd_allocator.

Return the number of free integers on the list.

void spot::free_list::insert ( int  base,
int  n 
)

Extend the list by inserting a new pos-lenght pair.

Find n consecutive integers.

Browse the list of free integers until n consecutive integers are found. Extend the list (using extend()) otherwise.

Returns:
the first integer of the range
void spot::free_list::release_n ( int  base,
int  n 
)

Release n consecutive integers starting at base.

void spot::free_list::remove ( int  base,
int  n = 0 
)

Remove n consecutive entries from the list, starting at base.

void spot::free_list::remove ( free_list_type::iterator  i,
int  base,
int  n 
) [protected]

Remove n consecutive entries from the list, starting at base.


Member Data Documentation

Tracks unused BDD variables.


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

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Generated on Fri Mar 9 2012 13:52:10 for spot by doxygen 1.7.6.1