Concept Spawning Process Group

Description
Refinement of
Associated types
Notation
Valid Expressions
Models

Description

A spawning process group

Associated types

Concept tag PG::communication_category Must be convertible to spawning_process_group_tag.

Notation

PG: A type that models the Spawning Process Group concept.
pg: An object of type PG.
n: An object of type PG::process_size_type.
f: A function object accepting no parameters, whose return value will be ignored.

Valid Expressions

Name	Expression	Type	Semantics
Number of processing units.	`processing_units(pg)`	Convertible to `process_size_type`	Returns the number of processing units that can be available. If zero, then the number of processing units is "unlimited".
Spawn processes	`spawn(pg, n, f)`		Creates `n` processes. Each process receives a copy of `f`, which it executes. The process group `pg` will provide unique process IDs to each process and `(bool)pg` will be `true` within those processes.
Join processes	`join(pg)`		Wait until all processes that have been spawned have completed. Only valid in the process that executed `spawn.`

Models

parallel::thread::mutex_process_group

Copyright (C) 2005 The Trustees of Indiana University.

Authors: Douglas Gregor and Andrew Lumsdaine