If you want to print something sequential it makes no sense using threads for that particular problem. You are very vague and abstract about your problem. Why do you need the threads? How big can n and m get?

If you need threads for some other reason then you might store the output from each thread in a different variable (if it fits in memory) and combine them later, or store the output in a different file per thread.

Or use only one file with the number of the thread prepended on each line. Then simply sort the file and print. But for this you need file locking or some other signaling mechanism so that two threads don't write to the file at the same time. If you have a database engine, the same can be done without locking problems by using the thread number as key

---

---

Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!

Titles consisting of a single word are discouraged, and in most cases are disallowed outright.

Read Where should I post X? if you're not absolutely sure you're posting in the right place.

Please read these before you post! —

• How do I compose an effective node title?
• How do I post a question effectively?
• Markup in the Monastery

Posts may use any of the Perl Monks Approved HTML tags:

a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr

You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)

	For:		Use:
	&		&
	<		&lt;
	>		&gt;
	[		&#91;
	]		&#93;

Link using PerlMonks shortcuts! What shortcuts can I use for linking?

See Writeup Formatting Tips and other pages linked from there for more info.