std::experimental::flex_barrier::flex_barrier

 

C++

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Technical Specifications

 

Technical specifications

Filesystem library (filesystem TS)

Library fundamentals (library fundamentals TS)

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experimental::flex_barrier

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std::experimental::flex_barrier

flex_barrier::flex_barrier

flex_barrier::~flex_barrier

flex_barrier::arrive_and_wait

flex_barrier::arrive_and_drop

 

explicit flex_barrier( std::ptrdiff_t num_threads );	(1)	(concurrency TS)
template < class F > flex_barrier( std::ptrdiff_t num_threads, F completion );	(2)	(concurrency TS)
flex_barrier( const flex_barrier & ) = delete;	(3)	(concurrency TS)

1) Has the same effect as flex_barrier(num_threads, c), where c is a Callable object whose invocation returns -1 and has no side effects.

2) Constructs a flex_barrier for num_threads participating threads, using completion for the completion phase. The set of participating threads is the first num_threads threads to arrive at the synchronization point.

3) Copy constructor is deleted; flex_barrier is not copyable.

Parameters

num_threads	-	the number of participating threads for the flex_barrier; must be non-negative
completion	-	A function object controlling the completion phase; must be Callable with no arguments and return type std::ptrdiff_t, and when invoked, must return a value no less than -1 and must not throw an exception.
Type requirements
- F must meet the requirements of CopyConstructible.

Notes

If num_threads is zero, the set of participating threads is empty, and flex_barrier can only be destroyed.