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

#!/usr/bin/perl

# the classical producer/consumer example, using semaphores
# one process produces items, sends 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:	1.6
Committed:	Mon Nov 6 19:40:02 2006 UTC (17 years, 7 months ago) by root
Branch:	MAIN
CVS Tags:	rel-2_5, rel-4_91, rel-4_22, rel-4_21, rel-4_0, rel-4_3, rel-3_41, rel-5_151, rel-4_13, rel-4_11, rel-5_1, rel-5_0, rel-6_0, rel-6_5, rel-4_748, rel-3_55, rel-4_8, rel-4_9, rel-3_51, rel-4_741, rel-4_743, rel-4_742, rel-6_10, rel-4_744, rel-4_747, rel-6_13, rel-4_01, rel-4_03, rel-4_02, rel-3_6, rel-3_62, rel-3_63, rel-3_61, rel-3_4, rel-6_09, rel-6_08, rel-6_07, rel-6_06, rel-6_05, rel-6_04, rel-6_03, rel-6_02, rel-6_01, rel-5_161, rel-3_1, rel-4_74, rel-4_71, rel-4_72, rel-4_73, rel-5_371, rel-5_372, rel-6_512, rel-6_513, rel-6_511, rel-6_514, rel-5_22, rel-5_23, rel-5_24, rel-5_25, rel-6_32, rel-6_33, rel-6_31, rel-6_36, rel-6_37, rel-5_162, rel-5_2, rel-6_38, rel-6_39, rel-4_802, rel-4_803, rel-3_5, rel-4_801, rel-3_3, rel-3_2, rel-4_804, rel-3_0, rel-5_37, rel-5_36, rel-4_479, rel-6_23, rel-3_01, rel-6_29, rel-6_28, rel-6_46, rel-4_50, rel-4_51, rel-6_45, rel-4_4, rel-3_11, rel-4_45, rel-6_51, rel-6_52, rel-6_53, rel-6_54, rel-6_55, rel-6_56, rel-6_57, rel-4_745, rel-4_901, rel-4_49, rel-4_48, rel-4_1, rel-4_2, rel-4_746, rel-5_11, rel-5_12, rel-5_15, rel-5_14, rel-5_17, rel-5_16, stack_sharing, rel-4_47, rel-4_46, rel-4_7, rel-3_501, rel-6_43, rel-6_42, rel-6_41, rel-6_47, rel-5_132, rel-5_131, rel-6_44, rel-6_49, rel-6_48, rel-4_911, rel-4_912, rel-4_31, rel-4_32, rel-4_33, rel-4_34, rel-4_35, rel-4_36, rel-4_37, HEAD
Changes since 1.5:	+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	root	1.6	# one process produces items, sends a signal.
5	root	1.1	# 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