[Cross post: prog+asm+c]thread problem: one write, many read

From	"io_x" <a@b.c.invalid>
Newsgroups	comp.programming, alt.lang.asm, comp.lang.c
Subject	[Cross post: prog+asm+c]thread problem: one write, many read
Date	2012-04-10 08:24 +0200
Message-ID	<4f83d0ff$0$1377$4fafbaef@reader2.news.tin.it> (permalink)
Organization	TIN.IT (http://www.tin.it)

Cross-posted to 3 groups.

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there is one buffer, only one thread write,
many threads read that buffer

what is the best solution for this problem for the x86 cpu?
How do you useful express that using the C language? :) i'm not ot

i think it is this: [because i believe it is possible many
threads can read one peace of memory in the same time...]

thread write:
unsigned32bits   v=0, mem=0;

mem=7;
/* wait until v is 0 */
Wait(&v, 0);
change(buffer, len)
mem=0;

--------------

threads read:
/* wait until mem is 0 */
Wait(&mem, 0);
atomic++(&v); /* if v==-1 seg fault :) */
leggi(buffer, len)
atomic--(&v);

you see dead lock on all this? i not...

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[Cross post: prog+asm+c]thread problem: one write, many read "io_x" <a@b.c.invalid> - 2012-04-10 08:24 +0200
  Re: [Cross post: prog+asm+c]thread problem: one write, many read "io_x" <a@b.c.invalid> - 2012-04-10 08:42 +0200
    Re: [Cross post: prog+asm+c]thread problem: one write, many read "io_x" <a@b.c.invalid> - 2012-04-10 10:34 +0200
      Re: [Cross post: prog+asm+c]thread problem: one write, many read "io_x" <a@b.c.invalid> - 2012-04-10 11:26 +0200
        Re: [Cross post: prog+asm+c]thread problem: one write, many read "io_x" <a@b.c.invalid> - 2012-04-10 12:56 +0200
          Re: [Cross post: prog+asm+c]thread problem: one write, many read "io_x" <a@b.c.invalid> - 2012-04-14 07:20 +0200
            Re: [Cross post: prog+asm+c]thread problem: one write, many read "io_x" <a@b.c.invalid> - 2012-04-15 08:04 +0200
  Re: [Cross post: prog+asm+c]thread problem: one write, many read "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> - 2012-04-10 10:01 +0200
  Re: thread problem: one write, many read "christian.bau" <christian.bau@cbau.wanadoo.co.uk> - 2012-04-13 17:13 -0700
    Re: thread problem: one write, many read "io_x" <a@b.c.invalid> - 2012-04-14 10:56 +0200

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