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Package "spawn"
| Title: | Easy concurrency |
|---|---|
| Rating: | Not rated. Create the first rating! |
| Latest version: | 0.0.1 |
| SHA1 sum: | ac15c286d83f0e6cf20a75e4443caa1127ec967c |
| Author: | Michael Hendricks <michael@ndrix.org> |
| Maintainer: | Michael Hendricks <michael@ndrix.org> |
| Packager: | Michael Hendricks <michael@ndrix.org> |
| Home page: | http://packs.ndrix.com/spawn/index.html |
| Download URL: | http://packs.ndrix.com/spawn/spawn-0.0.1.tgz |
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Details by download location
| Version | SHA1 | #Downloads | URL |
|---|---|---|---|
| 0.0.1 | ac15c286d83f0e6cf20a75e4443caa1127ec967c | 195 | http://packs.ndrix.com/spawn/spawn-0.0.1.tgz |
Synopsis
:- use_module(library(spawn)).
retirement(EmployeeId,Name,HireDate) :-
% start long-running computations in the background
spawn(query_company_ldap(EmployeeId,Employee)),
spawn(query_hr_database(EmployeeId,Job)),
do_something_productive_while_waiting,
% extract desired details from Employee and Job
% (blocks until background computations are done)
Employee = employee(Name,_,_),
Job = job(_,HireDate,_).
some_numbers(PiN,Rand) :-
% start long-running computations in the background
async(calculate_nth_digit_of_pi(21_734,PiN),PiToken),
async(ask_randomorg_for_a_number(Rand), RandToken),
% explicitly block until they're done
await(PiToken),
writeln(PiN), % now it has a value
await(RandToken),
writeln(Rand). % now it has a value too
Description
SWI Prolog has great concurrency primitives. For some common operations, those primitives are too low level. You end up reading through a lot of message queue and threading boilerplate code. This library provides high level concurrency predicates which handle all the messy details.
Our aim is to make this library as easy to use as call/1.
Changes in this Version
- First public release
Installation
Using SWI-Prolog 6.3 or later:
?- pack_install(spawn).
This module uses semantic versioning.
Source code available and pull requests accepted at http://github.com/mndrix/spawn
Contents of pack "spawn"
Pack contains 6 files holding a total of 12.5K bytes.