Basic multithreaded program Post: 302325248

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Top Forums Programming Basic multithreaded program Post 302325248 by CRGreathouse on Sunday 14th of June 2009 01:28:22 AM

06-14-2009

Registered User

Basic multithreaded program

I'd like to write a program (I'm flexible on language; C/C++ was my original idea but a scripting language would probably be better) that runs hundreds of programs, but only N = 4 (say) at a time. The idea is to keep all the cores on a multicore machine busy.

How can I do this? In particular, I'd like a library call I can make in some appropriate language that can

Start a new thread
Start a command-line process in the thread with arbitrary arguments
Recognize when the process is complete, return information to the main thread and terminate the helper/slave thread
Ideally, send and receive information on standard in/out

This seems like a very basic thing to ask; I'm just looking for something that would make this simple. I'm probably going to write many programs like this for various tasks, and I thought it would be good to ask around before diving into something that's not quite appropriate. I started reading about the (new) Python threading earlier before I thought to ask for advice/help.

CRGreathouse

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drop_language

DROP 
LANGUAGE(7)						   SQL Commands 						  DROP LANGUAGE(7)

NAME

       DROP LANGUAGE - remove a procedural language

SYNOPSIS

       DROP [ PROCEDURAL ] LANGUAGE [ IF EXISTS ] name [ CASCADE | RESTRICT ]

DESCRIPTION

       DROP  LANGUAGE  removes the definition of a previously registered procedural language. You must be a superuser or the owner of the language
       to use DROP LANGUAGE.

PARAMETERS

       IF EXISTS
	      Do not throw an error if the language does not exist. A notice is issued in this case.

       name   The name of an existing procedural language. For backward compatibility, the name can be enclosed by single quotes.

       CASCADE
	      Automatically drop objects that depend on the language (such as functions in the language).

       RESTRICT
	      Refuse to drop the language if any objects depend on it. This is the default.

EXAMPLES

       This command removes the procedural language plsample:

       DROP LANGUAGE plsample;

COMPATIBILITY

       There is no DROP LANGUAGE statement in the SQL standard.

SEE ALSO

       ALTER LANGUAGE [alter_language(7)], CREATE LANGUAGE [create_language(7)], droplang(1)

SQL - Language Statements					    2010-05-14							  DROP LANGUAGE(7)