A generic internal stack. More...

#include <tpie/internal_stack.h>

Inherits tpie::internal_stack_vector_base< T, internal_stack< T > >.

Public Types
typedef internal_stack_vector_base< T, internal_stack< T > >	parent_t

typedef T	value_type

Public Member Functions
	internal_stack (size_t size=0)
	Construct structure with given capacity. More...

T &	top ()
	Return the topmost element on the stack. More...

void	push (const T &val)
	Add an element to the top of the stack. More...

void	pop ()
	Remove the topmost element from the stack. More...

void	resize (size_t size=0)
	Change the capacity of the structure and clear all elements. More...

bool	empty () const
	Check if no elements are currently pushed to the structure. More...

size_t	size () const
	Return the number of elements in the data structure. More...

void	clear ()
	Clear the data structure of all elements. More...

Static Public Member Functions
static double	memory_coefficient ()
	Return the memory coefficient of the structure. More...

static double	memory_overhead ()
	Return the memory overhead of the structure. More...

static memory_size_type	memory_usage (memory_size_type size)
	Return the number of bytes required to create a data structure supporting a given number of elements. More...

static memory_size_type	memory_fits (memory_size_type memory)
	Return the maximum number of elements that can be contained in in the structure when it is allowed to fill a given number of bytes. More...

Protected Attributes
array< T >	m_elements
	Element storage. More...

size_t	m_size
	Number of elements pushed to the structure. More...

Detailed Description

template<typename T>
class tpie::internal_stack< T >

A generic internal stack.

Template Parameters

T	The type of items stored in the structure.

Definition at line 37 of file internal_stack.h.

Constructor & Destructor Documentation

template<typename T >

tpie::internal_stack< T >::internal_stack ( size_t size = 0 )

inline

Construct structure with given capacity.

If a zero capacity is given (the default), no elements may be pushed to the structure until the structure is resized to a different capacity.

Parameters

size	Capacity of the structure.

Definition at line 45 of file internal_stack.h.

45 : parent_t(size){}

tpie::internal_stack_vector_base< T, internal_stack< T > >::size

size_t size() const

Return the number of elements in the data structure.

Definition: internal_stack_vector_base.h:87

Member Function Documentation

void tpie::internal_stack_vector_base< T, internal_stack< T > >::clear ( )

inlineinherited

Clear the data structure of all elements.

Definition at line 92 of file internal_stack_vector_base.h.

References tpie::internal_stack_vector_base< T, child_t >::m_size.

92 {m_size=0;}

tpie::internal_stack_vector_base< T, internal_stack< T > >::m_size

size_t m_size

Number of elements pushed to the structure.

Definition: internal_stack_vector_base.h:44

bool tpie::internal_stack_vector_base< T, internal_stack< T > >::empty ( ) const

inlineinherited

Check if no elements are currently pushed to the structure.

Definition at line 82 of file internal_stack_vector_base.h.

References tpie::internal_stack_vector_base< T, child_t >::m_size.

82 {return m_size==0;}

tpie::internal_stack_vector_base< T, internal_stack< T > >::m_size

size_t m_size

Number of elements pushed to the structure.

Definition: internal_stack_vector_base.h:44

static double tpie::internal_stack_vector_base< T, internal_stack< T > >::memory_coefficient ( )

inlinestaticinherited

Return the memory coefficient of the structure.

Allocating a structure with n elements will use at most $\lfloor \mathrm{memory\_coefficient} \cdot n + \mathrm{memory\_overhead} \rfloor$ bytes. This does not include memory overhead incurred if the structure is allocated using new.

Returns: The memory coefficient of the structure.

Definition at line 51 of file internal_stack_vector_base.h.

References tpie::array< T, Allocator >::memory_coefficient().

51 {return array<T>::memory_coefficient();}

tpie::array< T >::memory_coefficient

static double memory_coefficient()

Return the memory coefficient of the structure.

Definition: array.h:393

static memory_size_type tpie::linear_memory_base< internal_stack< T > >::memory_fits ( memory_size_type memory )

inlinestaticinherited

Return the maximum number of elements that can be contained in in the structure when it is allowed to fill a given number of bytes.

Parameters

memory The number of bytes the structure is allowed to occupy

Returns: The number of elements that will fit in the structure

Definition at line 93 of file util.h.

                                                                         {
         return static_cast<memory_size_type>(
             floor((memory - child_t::memory_overhead()) / child_t::memory_coefficient()));
     }

static double tpie::internal_stack_vector_base< T, internal_stack< T > >::memory_overhead ( )

inlinestaticinherited

Return the memory overhead of the structure.

See also: memory_coefficient()

Returns: The memory overhead.

Definition at line 56 of file internal_stack_vector_base.h.

References tpie::array< T, Allocator >::memory_overhead().

                                     {
         return array<T>::memory_overhead() - sizeof(array<T>) + sizeof(child_t);
     }

static memory_size_type tpie::linear_memory_base< internal_stack< T > >::memory_usage ( memory_size_type size )

inlinestaticinherited

Return the number of bytes required to create a data structure supporting a given number of elements.

Parameters

size	The number of elements to support

Returns: The amount of memory required in bytes

Definition at line 81 of file util.h.

                                                                 {
         return static_cast<memory_size_type>(
             floor(static_cast<double>(size) * child_t::memory_coefficient() + child_t::memory_overhead()));
     }