Extensions for parallelism
| Technical Specification | ||||
| Filesystem library(filesystem TS) | ||||
| Library fundamentals(library fundamentals TS) | ||||
| Library fundamentals 2(library fundamentals TS v2) | ||||
| Library fundamentals 3(library fundamentals TS v3) | ||||
| Extensions for parallelism(parallelism TS) | ||||
| Extensions for parallelism 2(parallelism TS v2) | ||||
| Extensions for concurrency(concurrency TS) | ||||
| Extensions for concurrency 2(concurrency TS v2) | ||||
| Concepts(concepts TS) | ||||
| Ranges(ranges TS) | ||||
| Reflection(reflection TS) | ||||
| Mathematical special functions(special functions TR) | ||||
| Experimental Non-TS | ||||
| Pattern Matching | ||||
| Linear Algebra | ||||
| std::execution | ||||
| Contracts | ||||
| 2D Graphics |
| Execution policies | ||||
| Parallel algorithms | ||||
| Parallel exceptions | ||||
| Parallelized version of existing algorithms | ||||
| New algorithms | ||||
 | Merged into ISO C++ The functionality described on this page was merged into the mainline ISO C++ standard (except for dynamic execution policy andexception_list) as of 3/2016; seethe algorithm library(since C++17) |
The C++ Extensions for Parallelism, ISO/IEC TS 19570:2015 defines the following new components for the C++ standard library:
Contents |
[edit]Execution policies
The parallelism TS describes three execution policies:sequential,parallel, andparallel+vector, and provides corresponding execution policy types and objects. Users may select an execution policy statically by invoking a parallel algorithm with the an execution policy object of the corresponding type, or dynamically by using the type-erasingexecution_policy class.
Implementations may define additional execution policies as an extension. The semantics of parallel algorithms invoked with an execution policy object of implementation-defined type is implementation-defined.
Defined in header <experimental/execution_policy> | |
| execution policy types (class) | |
| global execution policy objects (constant) | |
| dynamic execution policy (class) | |
| test whether a class represents an execution policy (class template) | |
[edit]Exception lists
Defined in header <experimental/exception_list> | |
| exceptions raised during parallel executions (class) | |
[edit]Parallelized versions of existing algorithms
The TS providesparallelized versions of the following 69 algorithms from <algorithm>, <numeric> and <memory>:
[edit]New algorithms
Defined in header <experimental/algorithm> | |
| similar tostd::for_each except returns void (function template) | |
| applies a function object to the first n elements of a sequence (function template) | |
Defined in header <experimental/numeric> | |
(parallelism TS) | similar tostd::accumulate, except out of order (function template)[edit] |
| similar tostd::partial_sum, excludes the ith input element from the ith sum (function template) | |
| similar tostd::partial_sum, includes the ith input element in the ith sum (function template) | |
(parallelism TS) | applies a functor, then reduces out of order (function template)[edit] |
| applies a functor, then calculates exclusive scan (function template) | |
| applies a functor, then calculates inclusive scan (function template) | |
