- Main Page
- Related Pages
- Modules
- Namespaces
- Classes
- Files

- Class List
- Class Hierarchy
- Class Members

Classes | Public Types | Public Member Functions | List of all members
tbb::interface5::concurrent_priority_queue< T, Compare, A > Class Template Reference

Concurrent priority queue. More...

`#include <concurrent_priority_queue.h>`

## Public Types
typedef T | value_type
| Element type in the queue.
typedef T & | reference
| Reference type.
typedef const T & | const_reference
| Const reference type.
typedef size_t | size_type
| Integral type for representing size of the queue.
typedef ptrdiff_t | difference_type
| Difference type for iterator.
typedef A | allocator_type
| Allocator type.

## Public Member Functions
| concurrent_priority_queue (const allocator_type &a=allocator_type())
| Constructs a new concurrent_priority_queue with default capacity.
| concurrent_priority_queue (size_type init_capacity, const allocator_type &a=allocator_type())
| Constructs a new concurrent_priority_queue with init_sz capacity.
template<typename InputIterator >
| concurrent_priority_queue (InputIterator begin, InputIterator end, const allocator_type &a=allocator_type())
| [begin,end) constructor
| concurrent_priority_queue (std::initializer_list< T > init_list, const allocator_type &a=allocator_type())
| Constructor from std::initializer_list.
| concurrent_priority_queue (const concurrent_priority_queue &src)
| Copy constructor. More...
| concurrent_priority_queue (const concurrent_priority_queue &src, const allocator_type &a)
| Copy constructor with specific allocator. More...
concurrent_priority_queue & | operator= (const concurrent_priority_queue &src)
| Assignment operator. More...
| concurrent_priority_queue (concurrent_priority_queue &&src)
| Move constructor. More...
| concurrent_priority_queue (concurrent_priority_queue &&src, const allocator_type &a)
| Move constructor with specific allocator. More...
concurrent_priority_queue & | operator= (concurrent_priority_queue &&src)
| Move assignment operator. More...
template<typename InputIterator >
void | assign (InputIterator begin, InputIterator end)
| Assign the queue from [begin,end) range, not thread-safe.
void | assign (std::initializer_list< T > il)
| Assign the queue from std::initializer_list, not thread-safe.
concurrent_priority_queue & | operator= (std::initializer_list< T > il)
| Assign from std::initializer_list, not thread-safe.
bool | empty () const
| Returns true if empty, false otherwise. More...
size_type | size () const
| Returns the current number of elements contained in the queue. More...
void | push (const_reference elem)
| Pushes elem onto the queue, increasing capacity of queue if necessary. More...
void | push (value_type &&elem)
| Pushes elem onto the queue, increasing capacity of queue if necessary. More...
template<typename... Args>
void | emplace (Args &&...args)
| Constructs a new element using args as the arguments for its construction and pushes it onto the queue */. More...
bool | try_pop (reference elem)
| Gets a reference to and removes highest priority element. More...
void | clear ()
| Clear the queue; not thread-safe. More...
void | swap (concurrent_priority_queue &q)
| Swap this queue with another; not thread-safe. More...
allocator_type | get_allocator () const
| Return allocator object.

## Detailed Description

### template<typename T, typename Compare = std::less<T>, typename A = cache_aligned_allocator<T>>
class tbb::interface5::concurrent_priority_queue< T, Compare, A >

Concurrent priority queue.

## Constructor & Destructor Documentation

template<typename T , typename Compare = std::less<T>, typename A = cache_aligned_allocator<T>>

tbb::interface5::concurrent_priority_queue< T, Compare, A >::concurrent_priority_queue | ( | const concurrent_priority_queue< T, Compare, A > & | src) |  |
| inlineexplicit

Copy constructor.

This operation is unsafe if there are pending concurrent operations on the src queue.

template<typename T , typename Compare = std::less<T>, typename A = cache_aligned_allocator<T>>

tbb::interface5::concurrent_priority_queue< T, Compare, A >::concurrent_priority_queue | ( | const concurrent_priority_queue< T, Compare, A > & | src,
|  | const allocator_type & | a
| ) |  |
| inline

Copy constructor with specific allocator.

This operation is unsafe if there are pending concurrent operations on the src queue.

template<typename T , typename Compare = std::less<T>, typename A = cache_aligned_allocator<T>>

tbb::interface5::concurrent_priority_queue< T, Compare, A >::concurrent_priority_queue | ( | concurrent_priority_queue< T, Compare, A > && | src) |  |
| inline

Move constructor.

This operation is unsafe if there are pending concurrent operations on the src queue.

template<typename T , typename Compare = std::less<T>, typename A = cache_aligned_allocator<T>>

tbb::interface5::concurrent_priority_queue< T, Compare, A >::concurrent_priority_queue | ( | concurrent_priority_queue< T, Compare, A > && | src,
|  | const allocator_type & | a
| ) |  |
| inline

Move constructor with specific allocator.

This operation is unsafe if there are pending concurrent operations on the src queue.

## Member Function Documentation

template<typename T , typename Compare = std::less<T>, typename A = cache_aligned_allocator<T>>

void tbb::interface5::concurrent_priority_queue< T, Compare, A >::clear | ( | ) |  |
| inline

Clear the queue; not thread-safe.

This operation is unsafe if there are pending concurrent operations on the queue. Resets size, effectively emptying queue; does not free space. May not clear elements added in pending operations.

template<typename T , typename Compare = std::less<T>, typename A = cache_aligned_allocator<T>>
template<typename... Args>

void tbb::interface5::concurrent_priority_queue< T, Compare, A >::emplace | ( | Args &&... | args) |  |
| inline

Constructs a new element using args as the arguments for its construction and pushes it onto the queue */.

This operation can be safely used concurrently with other push, try_pop or emplace operations.

template<typename T , typename Compare = std::less<T>, typename A = cache_aligned_allocator<T>>

bool tbb::interface5::concurrent_priority_queue< T, Compare, A >::empty | ( | ) |  | const
| inline

Returns true if empty, false otherwise.

Returned value may not reflect results of pending operations. This operation reads shared data and will trigger a race condition.

template<typename T , typename Compare = std::less<T>, typename A = cache_aligned_allocator<T>>

concurrent_priority_queue& tbb::interface5::concurrent_priority_queue< T, Compare, A >::operator= | ( | const concurrent_priority_queue< T, Compare, A > & | src) |  |
| inline

Assignment operator.

This operation is unsafe if there are pending concurrent operations on the src queue.

template<typename T , typename Compare = std::less<T>, typename A = cache_aligned_allocator<T>>

concurrent_priority_queue& tbb::interface5::concurrent_priority_queue< T, Compare, A >::operator= | ( | concurrent_priority_queue< T, Compare, A > && | src) |  |
| inline

Move assignment operator.

This operation is unsafe if there are pending concurrent operations on the src queue.

template<typename T , typename Compare = std::less<T>, typename A = cache_aligned_allocator<T>>

void tbb::interface5::concurrent_priority_queue< T, Compare, A >::push | ( | const_reference | elem) |  |
| inline

Pushes elem onto the queue, increasing capacity of queue if necessary.

This operation can be safely used concurrently with other push, try_pop or emplace operations.

template<typename T , typename Compare = std::less<T>, typename A = cache_aligned_allocator<T>>

void tbb::interface5::concurrent_priority_queue< T, Compare, A >::push | ( | value_type && | elem) |  |
| inline

Pushes elem onto the queue, increasing capacity of queue if necessary.

This operation can be safely used concurrently with other push, try_pop or emplace operations.

template<typename T , typename Compare = std::less<T>, typename A = cache_aligned_allocator<T>>

size_type tbb::interface5::concurrent_priority_queue< T, Compare, A >::size | ( | ) |  | const
| inline

Returns the current number of elements contained in the queue.

Returned value may not reflect results of pending operations. This operation reads shared data and will trigger a race condition.

template<typename T , typename Compare = std::less<T>, typename A = cache_aligned_allocator<T>>

void tbb::interface5::concurrent_priority_queue< T, Compare, A >::swap | ( | concurrent_priority_queue< T, Compare, A > & | q) |  |
| inline

Swap this queue with another; not thread-safe.

This operation is unsafe if there are pending concurrent operations on the queue.

template<typename T , typename Compare = std::less<T>, typename A = cache_aligned_allocator<T>>

bool tbb::interface5::concurrent_priority_queue< T, Compare, A >::try_pop | ( | reference | elem) |  |
| inline

Gets a reference to and removes highest priority element.

If a highest priority element was found, sets elem and returns true, otherwise returns false. This operation can be safely used concurrently with other push, try_pop or emplace operations.

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

- concurrent_priority_queue.h

Copyright © 2005-2017 Intel Corporation. All Rights Reserved.

Intel, Pentium, Intel Xeon, Itanium, Intel XScale and VTune are registered trademarks or trademarks of Intel Corporation or its subsidiaries in the United States and other countries.

* Other names and brands may be claimed as the property of others.