[ViewVC] Annotation of: cvs/Coro/eg/prodcons2

#!/usr/bin/perl

# the classical producer/consumer example, using semaphores
# one process produces items, send s a signal.
# another process waits for that signal and
# consumed the item.

use Coro;
use Coro::Process;
use Coro::Semaphore;

my $produced = new Coro::Semaphore;
my $finished = new Coro::Semaphore 0;

async {
   for my $i (0..9) {
      print "produced $i\n";
      push @buffer, $i;
      $produced->up;
      yield if @buffer > 5; # simulate memory pressure ;)
   }
   print "work done\n";
   $finished->up;
   $idle;
};

async {
   while () {
      $produced->down;
      my $i = shift @buffer;
      print "consumed $i\n";
   }
};

$finished->down;

print "job finished\n";

Revision:	1.1
Committed:	Tue Jul 3 03:52:48 2001 UTC (23 years ago) by root
Branch:	MAIN
Log Message:	* empty log message *
#	User	Rev	Content
1	root	1.1	#!/usr/bin/perl
2
3			# the classical producer/consumer example, using semaphores
4			# one process produces items, send s a signal.
5			# another process waits for that signal and
6			# consumed the item.
7
8			use Coro;
9			use Coro::Process;
10			use Coro::Semaphore;
11
12			my $produced = new Coro::Semaphore;
13			my $finished = new Coro::Semaphore 0;
14
15			async {
16			for my $i (0..9) {
17			print "produced $i\n";
18			push @buffer, $i;
19			$produced->up;
20			yield if @buffer > 5; # simulate memory pressure ;)
21			}
22			print "work done\n";
23			$finished->up;
24			$idle;
25			};
26
27			async {
28			while () {
29			$produced->down;
30			my $i = shift @buffer;
31			print "consumed $i\n";
32			}
33			};
34
35			$finished->down;
36
37			print "job finished\n";
38