[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::Semaphore;

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

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

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

$finished->down;

print "job finished\n";

Revision:	1.5
Committed:	Mon Jul 23 02:14:19 2001 UTC (22 years, 10 months ago) by root
Branch:	MAIN
CVS Tags:	rel-2_0, rel-2_1, rel-1_1, rel-1_0, rel-1_9, rel-1_2, rel-1_5, rel-1_4, rel-1_7, rel-1_6, rel-1_31
Changes since 1.4:	+1 -1 lines
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::Semaphore;
10
11	root	1.2	my $produced = new Coro::Semaphore 0;
12	root	1.1	my $finished = new Coro::Semaphore 0;
13
14			async {
15			for my $i (0..9) {
16			print "produced $i\n";
17			push @buffer, $i;
18			$produced->up;
19	root	1.5	cede if @buffer > 5; # simulate memory pressure ;)
20	root	1.1	}
21			print "work done\n";
22			$finished->up;
23			};
24
25			async {
26			while () {
27			$produced->down;
28			my $i = shift @buffer;
29			print "consumed $i\n";
30			}
31			};
32
33			$finished->down;
34
35			print "job finished\n";
36