Orocos Real-Time Toolkit  2.9.0
Public Types | Public Member Functions | Public Attributes | List of all members
RTT::internal::List< T > Class Template Reference

This object represents the default queue implementation used by Orocos objects. More...

#include <rtt/internal/List.hpp>

Inheritance diagram for RTT::internal::List< T >:
RTT::internal::ListLockFree< T >

Public Types

typedef T value_t
 

Public Member Functions

 List (int qsize, int t=ORONUM_OS_MAX_THREADS)
 Create a queue of fixed size. More...
 
size_t capacity () const
 Returns the maximum number of elements this list can hold. More...
 
size_t size () const
 Returns the current number of elements in this list. More...
 
bool empty () const
 Returns true if this list is empty. More...
 
void grow (size_t items=1)
 Grow the capacity to contain at least n additional items. More...
 
void shrink (size_t items=1)
 Shrink the capacity with at most n items. More...
 
void reserve (size_t lsize)
 Reserve a capacity for this list. More...
 
void clear ()
 Clears all elements in the list. More...
 
bool append (value_t item)
 Append a single value to the list. More...
 
size_t append (const std::vector< T > &items)
 Append a sequence of values to the list. More...
 
value_t front () const
 Returns the first element of the list. More...
 
value_t back () const
 Returns the last element of the list. More...
 
bool erase (value_t item)
 Erase a value from the list. More...
 
template<typename Pred >
bool delete_if (Pred pred)
 Erase a value from the list. More...
 
template<class Function >
void apply (Function func)
 Apply a function to the elements of the whole list. More...
 
template<class Function >
void apply_and_blank (Function func, value_t blank)
 Apply a function to the non-blanked elements of the list. More...
 
bool erase_and_blank (value_t item, value_t blank)
 Erase an element from the list and blank it if possible. More...
 
template<class Function >
value_t find_if (Function func, value_t blank=value_t())
 Find an item in the list such that func( item ) == true. More...
 

Public Attributes

const unsigned int MAX_THREADS
 The maximum number of threads. More...
 

Detailed Description

template<class T>
class RTT::internal::List< T >

This object represents the default queue implementation used by Orocos objects.

Definition at line 65 of file List.hpp.

Member Typedef Documentation

template<class T>
typedef T RTT::internal::ListLockFree< T >::value_t
inherited

Definition at line 95 of file ListLockFree.hpp.

Constructor & Destructor Documentation

template<class T>
RTT::internal::List< T >::List ( int  qsize,
int  t = ORONUM_OS_MAX_THREADS 
)
inline

Create a queue of fixed size.

Optionally, add the number of threads that may concurrently access this queue.

Definition at line 78 of file List.hpp.

Member Function Documentation

template<class T>
bool RTT::internal::ListLockFree< T >::append ( value_t  item)
inlineinherited

Append a single value to the list.

This function calls the copy-constructor of item and may call the destructor of item

Parameters
itemthe value to write
Returns
false if the list is full.
Note
This function is only real-time if the destructor or copy-constructor of of T is real-time.

Definition at line 344 of file ListLockFree.hpp.

Referenced by RTT::corba::CorbaDispatcher::dispatchChannel().

template<class T>
size_t RTT::internal::ListLockFree< T >::append ( const std::vector< T > &  items)
inlineinherited

Append a sequence of values to the list.

Parameters
itemsthe values to append.
Returns
the number of values written (may be less than d.size())
Note
This function is only real-time if the destructor and copy-constructor of of T is real-time.

Definition at line 401 of file ListLockFree.hpp.

template<class T>
template<class Function >
void RTT::internal::ListLockFree< T >::apply ( Function  func)
inlineinherited

Apply a function to the elements of the whole list.

Parameters
funcThe function to apply.
Note
Always real-time.

Definition at line 524 of file ListLockFree.hpp.

Referenced by RTT::internal::SignalBase::disconnect(), and RTT::corba::CorbaDispatcher::dispatchChannel().

template<class T>
template<class Function >
void RTT::internal::ListLockFree< T >::apply_and_blank ( Function  func,
value_t  blank 
)
inlineinherited

Apply a function to the non-blanked elements of the list.

If during an apply_and_blank, the erase_and_blank function is called, that element will not be subject to func if not yet processed. You must not call this function concurrently from multiple threads.

Parameters
funcThe function to apply.
blankThe 'blank' item. Each item of this list will be compared to this item using operator==(), if it matches, it is considered blank, and func is not applied.
See also
erase_and_blank
Deprecated:
This complicated function is nowhere used.
Note
This function is only real-time if the destructor and copy-constructor of of T is real-time.

Definition at line 552 of file ListLockFree.hpp.

template<class T>
value_t RTT::internal::ListLockFree< T >::back ( ) const
inlineinherited

Returns the last element of the list.

Definition at line 385 of file ListLockFree.hpp.

template<class T>
size_t RTT::internal::ListLockFree< T >::capacity ( ) const
inlineinherited

Returns the maximum number of elements this list can hold.

Note
Always real-time.

Definition at line 178 of file ListLockFree.hpp.

template<class T>
void RTT::internal::ListLockFree< T >::clear ( )
inlineinherited

Clears all elements in the list.

Postcondition
this->empty() == true
Note
This function is not real-time if the destructor of of T is not real-time.

Definition at line 316 of file ListLockFree.hpp.

template<class T>
template<typename Pred >
bool RTT::internal::ListLockFree< T >::delete_if ( Pred  pred)
inlineinherited

Erase a value from the list.

Parameters
functioneach elements for which pred returns true are removed
Returns
true if at least one element has been removed
Note
This function is only real-time if the destructor and copy-constructor of of T is real-time.

Definition at line 480 of file ListLockFree.hpp.

template<class T>
bool RTT::internal::ListLockFree< T >::empty ( ) const
inlineinherited

Returns true if this list is empty.

Note
Always real-time.

Definition at line 206 of file ListLockFree.hpp.

Referenced by RTT::internal::SignalBase::destroy(), and RTT::corba::CorbaDispatcher::loop().

template<class T>
bool RTT::internal::ListLockFree< T >::erase ( value_t  item)
inlineinherited

Erase a value from the list.

Parameters
itemis to be erased from the list.
Returns
true if found and erased.
Note
This function is only real-time if the destructor and copy-constructor of of T is real-time.

Definition at line 438 of file ListLockFree.hpp.

Referenced by RTT::corba::CorbaDispatcher::cancelChannel(), RTT::internal::SignalBase::destroy(), and RTT::corba::CorbaDispatcher::loop().

template<class T>
bool RTT::internal::ListLockFree< T >::erase_and_blank ( value_t  item,
value_t  blank 
)
inlineinherited

Erase an element from the list and blank it if possible.

If during an apply_and_blank, the erase_and_blank function is called, that element will not be subject to func if not yet processed. You may call this function concurrently from multiple threads.

Warning
It is possible that item is being processed within apply_and_blank. In that case the 'blank' operation has no effect.
Parameters
itemThe item to erase from the list.
blankThe 'blank' item to use to blank item from the list.
See also
apply_and_blank
Deprecated:
This complicated function is nowhere used.
Note
This function is only real-time if the destructor and copy-constructor of of T is real-time.

Definition at line 597 of file ListLockFree.hpp.

template<class T>
template<class Function >
value_t RTT::internal::ListLockFree< T >::find_if ( Function  func,
value_t  blank = value_t() 
)
inlineinherited

Find an item in the list such that func( item ) == true.

Parameters
blankThe value to return if not found.
Returns
The item that matches func(item) or blank if none matches.
Note
This function is only real-time if the copy-constructor of of T is real-time.

Definition at line 626 of file ListLockFree.hpp.

template<class T>
value_t RTT::internal::ListLockFree< T >::front ( ) const
inlineinherited

Returns the first element of the list.

Note
This function is only real-time if the copy-constructor of of T is real-time.

Definition at line 373 of file ListLockFree.hpp.

Referenced by RTT::internal::SignalBase::destroy(), and RTT::corba::CorbaDispatcher::loop().

template<class T>
void RTT::internal::ListLockFree< T >::grow ( size_t  items = 1)
inlineinherited

Grow the capacity to contain at least n additional items.

This method tries to avoid too much re-allocations, by growing a bit more than required every N invocations and growing nothing in between.

Parameters
itemsThe number of items to at least additionally reserve.
Note
Almost never real-time.

Definition at line 224 of file ListLockFree.hpp.

template<class T>
void RTT::internal::ListLockFree< T >::reserve ( size_t  lsize)
inlineinherited

Reserve a capacity for this list.

If you wish to invoke this method concurrently, guard it with a mutex. The other methods may be invoked concurrently with this method.

Parameters
lsizethe minimal number of items this list will be able to hold. Will not drop below the current capacity() and this method will do nothing if lsize < this->capacity(). @ Not real-time if lsize <= this->capacity().

Definition at line 252 of file ListLockFree.hpp.

Referenced by RTT::internal::SignalBase::reserve().

template<class T>
void RTT::internal::ListLockFree< T >::shrink ( size_t  items = 1)
inlineinherited

Shrink the capacity with at most n items.

This method does not actually free memory, it just prevents a (number of) subsequent grow() invocations to allocate more memory.

Parameters
itemsThe number of items to at most remove from the capacity.
Note
Always real-time.

Definition at line 238 of file ListLockFree.hpp.

template<class T>
size_t RTT::internal::ListLockFree< T >::size ( ) const
inlineinherited

Returns the current number of elements in this list.

Note
Always real-time.

Definition at line 192 of file ListLockFree.hpp.

Member Data Documentation

template<class T>
const unsigned int RTT::internal::ListLockFree< T >::MAX_THREADS
inherited

The maximum number of threads.

The number of threads which may concurrently access this buffer.

Definition at line 93 of file ListLockFree.hpp.


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