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# tbb::deprecated::concurrent_queue< T, A > Class Template Reference
[Containers]

A high-performance thread-safe blocking concurrent bounded queue. More...

`#include <concurrent_queue.h>`

Inheritance diagram for tbb::deprecated::concurrent_queue< T, A >:

List of all members.

## Public Types
typedef concurrent_bounded_queue< T, A >::iterator | iterator
typedef concurrent_bounded_queue< T, A >::const_iterator | const_iterator
## Public Member Functions
| concurrent_queue (const A &a=A())
| Construct empty queue.
| concurrent_queue (const concurrent_queue &src, const A &a=A())
| Copy constructor.
template<typename InputIterator>
| concurrent_queue (InputIterator b, InputIterator e, const A &a=A())
| [begin,end) constructor
bool | push_if_not_full (const T &source)
| Enqueue an item at tail of queue if queue is not already full.
bool | pop_if_present (T &destination)
| Attempt to dequeue an item from head of queue.
iterator | begin ()
iterator | end ()
const_iterator | begin () const
const_iterator | end () const
## Friends
class | internal::concurrent_queue_iterator

## Detailed Description

### template<typename T, class A = cache_aligned_allocator<T>>
class tbb::deprecated::concurrent_queue< T, A >

A high-performance thread-safe blocking concurrent bounded queue.

This is the pre-PPL TBB concurrent queue which support boundedness and blocking semantics. Note that method names agree with the PPL-style concurrent queue. Multiple threads may each push and pop concurrently. Assignment construction is not allowed.

## Member Function Documentation

template<typename T, class A = cache_aligned_allocator<T>>

bool tbb::deprecated::concurrent_queue< T, A >::pop_if_present | ( | T & | destination | ) | `[inline]`

Attempt to dequeue an item from head of queue.

Does not wait for item to become available. Returns true if successful; false otherwise.

Deprecated:
  Use try_pop()

template<typename T, class A = cache_aligned_allocator<T>>

bool tbb::deprecated::concurrent_queue< T, A >::push_if_not_full | ( | const T & | source | ) | `[inline]`

Enqueue an item at tail of queue if queue is not already full.

Does not wait for queue to become not full. Returns true if item is pushed; false if queue was already full.

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

- concurrent_queue.h

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