--- Coro/Coro.pm	2007/04/27 19:35:58	1.125
+++ Coro/Coro.pm	2007/09/20 22:53:23	1.132
@@ -52,7 +52,7 @@
 our $main;    # main coroutine
 our $current; # current coroutine
 
-our $VERSION = '3.62';
+our $VERSION = '3.7';
 
 our @EXPORT = qw(async async_pool cede schedule terminate current unblock_sub);
 our %EXPORT_TAGS = (
@@ -115,6 +115,8 @@
 
 =cut
 
+$main->{desc} = "[main::]";
+
 # maybe some other module used Coro::Specific before...
 $main->{specific} = $current->{specific}
    if $current;
@@ -168,7 +170,7 @@
       &schedule;
    }
 };
-
+$manager->desc ("[coro manager]");
 $manager->prio (PRIO_MAX);
 
 # static methods. not really.
@@ -230,19 +232,23 @@
 =cut
 
 our $POOL_SIZE = 8;
+our $MAX_POOL_RSS = 64 * 1024;
 our @pool;
 
 sub pool_handler {
    while () {
+      $current->{desc} = "[async_pool]";
+
       eval {
          my ($cb, @arg) = @{ delete $current->{_invoke} or return };
          $cb->(@arg);
       };
       warn $@ if $@;
 
-      last if @pool >= $POOL_SIZE;
-      push @pool, $current;
+      last if @pool >= $POOL_SIZE || $current->rss >= $MAX_POOL_RSS;
 
+      push @pool, $current;
+      $current->{desc} = "[async_pool idle]";
       $current->save (Coro::State::SAVE_DEF);
       $current->prio (0);
       schedule;
@@ -251,7 +257,7 @@
 
 sub async_pool(&@) {
    # this is also inlined into the unlock_scheduler
-   my $coro = (pop @pool or new Coro \&pool_handler);
+   my $coro = (pop @pool) || new Coro \&pool_handler;;
 
    $coro->{_invoke} = [@_];
    $coro->ready;
@@ -527,7 +533,7 @@
 # to reduce pressure on the coro pool (because most callbacks
 # return immediately and can be reused) and because we cannot cede
 # inside an event callback.
-our $unblock_scheduler = async {
+our $unblock_scheduler = new Coro sub {
    while () {
       while (my $cb = pop @unblock_queue) {
          # this is an inlined copy of async_pool
@@ -540,6 +546,7 @@
       schedule; # sleep well
    }
 };
+$unblock_scheduler->desc ("[unblock_sub scheduler]");
 
 sub unblock_sub(&) {
    my $cb = shift;