commit | 696a6e906e055d3b3de7f2861ee0cc48c2f98e07 | [log] [tgz] |
---|---|---|
author | Ruslan Arutyunyan <ruslan.arutyunyan@intel.com> | Fri Jan 28 03:54:27 2022 +0300 |
committer | Copybara-Service <copybara-worker@google.com> | Thu Jan 27 17:16:12 2022 -0800 |
tree | 931625f7ec8c7d0881da311a397001a78eb484d5 | |
parent | e6017b8b7385df5dac9c384b0fbe714e09bcf339 [diff] |
[libc++][pstl] Implement tag dispatching mechanism for Parallel STL Implement the mechanism that simplifies the execution policy/iterator category dispatching and allows to implement customizations for the parallel algorithms with adding custom tags Reviewed By: rodgert, MikeDvorskiy Differential Revision: https://reviews.llvm.org/D104492 GitOrigin-RevId: 843c12d6a0cdfd64c5a92e24eb58ba9ee17ca1ee
Parallel STL is an implementation of the C++ standard library algorithms with support for execution policies, as specified in ISO/IEC 14882:2017 standard, commonly called C++17. The implementation also supports the unsequenced execution policy specified in Parallelism TS version 2 and proposed for the next version of the C++ standard in the C++ working group paper P1001. Parallel STL offers efficient support for both parallel and vectorized execution of algorithms. For sequential execution, it relies on an available implementation of the C++ standard library.
To use Parallel STL, you must have the following software installed:
unseq
and par_unseq
policies only have effect with compilers that support #pragma omp simd
or #pragma simd
.includes
, inplace_merge
, merge
, nth_element
, partial_sort
, partial_sort_copy
, set_difference
, set_intersection
, set_symmetric_difference
, set_union
, sort
, stable_partition
, stable_sort
, unique
.exclusive_scan
, inclusive_scan
, transform_exclusive_scan
, transform_inclusive_scan
shall be DefaultConstructible. A default constructed-instance of the initial value type shall be the identity element for the specified binary operation.max_element
, min_element
, minmax_element
, partial_sort
, partial_sort_copy
, sort
, stable_sort
the dereferenced value type of the provided iterators shall be DefaultConstructible.remove
, remove_if
, unique
the dereferenced value type of the provided iterators shall be MoveConstructible.copy_if
, inplace_merge
, partial_sort
, partial_sort_copy
, partition_copy
, remove
, remove_if
, rotate
, sort
, stable_sort
, unique
, unique_copy
.