Parallel Reduction for rvalues

Description

Intel® oneAPI Threading Building Blocks (oneTBB) implementation extends the ParallelReduceFunc and ParallelReduceReduction to optimize operating with rvalues using functional form of tbb::parallel_reduce and tbb::parallel_deterministic_reduce algorithms.

API

ParallelReduceFunc Requirements: Pseudo-Signature, Semantics

Value Func::operator()(const Range &range, Value &&x) const

or

Value Func::operator()(const Range &range, const Value &x) const

Accumulates the result for a subrange, starting with initial value x. The Range type must meet the Range requirements <https://spec.oneapi.io/versions/latest/elements/oneTBB/source/named_requirements/algorithms/range.html>_. The Value type must be the same as a corresponding template parameter for the parallel_reduce algorithm.

If both rvalue and lvalue forms are provided, the rvalue is preferred.

ParallelReduceReduction Requirements: Pseudo-Signature, Semantics

Value Reduction::operator()(Value &&x, Value &&y) const

or

Value Reduction::operator()(const Value &x, const Value &y) const

Combines the x and y results. The Value type must be the same as a corresponding template parameter for the parallel_reduce algorithm.

If both rvalue and lvalue forms are provided, the rvalue is preferred.

Example

See also