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Comparing Coro/Coro.pm (file contents):
Revision 1.129 by root, Wed Sep 19 22:33:08 2007 UTC vs.
Revision 1.140 by root, Thu Sep 27 16:25:10 2007 UTC

… …
50 50
51our $idle; # idle handler 51our $idle; # idle handler
52our $main; # main coroutine 52our $main; # main coroutine
53our $current; # current coroutine 53our $current; # current coroutine
54 54
55our $VERSION = '3.7'; 55our $VERSION = '3.8';
56 56
57our @EXPORT = qw(async async_pool cede schedule terminate current unblock_sub); 57our @EXPORT = qw(async async_pool cede schedule terminate current unblock_sub);
58our %EXPORT_TAGS = ( 58our %EXPORT_TAGS = (
59 prio => [qw(PRIO_MAX PRIO_HIGH PRIO_NORMAL PRIO_LOW PRIO_IDLE PRIO_MIN)], 59 prio => [qw(PRIO_MAX PRIO_HIGH PRIO_NORMAL PRIO_LOW PRIO_IDLE PRIO_MIN)],
60); 60);
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113reasons. If performance is not essential you are encouraged to use the 113reasons. If performance is not essential you are encouraged to use the
114C<Coro::current> function instead. 114C<Coro::current> function instead.
115 115
116=cut 116=cut
117 117
118$main->{desc} = "[main::]";
119
118# maybe some other module used Coro::Specific before... 120# maybe some other module used Coro::Specific before...
119$main->{specific} = $current->{specific} 121$main->{specific} = $current->{specific}
120 if $current; 122 if $current;
121 123
122_set_current $main; 124_set_current $main;
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159# cannot destroy itself. 161# cannot destroy itself.
160my @destroy; 162my @destroy;
161my $manager; 163my $manager;
162 164
163$manager = new Coro sub { 165$manager = new Coro sub {
164 $current->desc ("[coro manager]");
165
166 while () { 166 while () {
167 (shift @destroy)->_cancel 167 (shift @destroy)->_cancel
168 while @destroy; 168 while @destroy;
169 169
170 &schedule; 170 &schedule;
171 } 171 }
172}; 172};
173 173$manager->desc ("[coro manager]");
174$manager->prio (PRIO_MAX); 174$manager->prio (PRIO_MAX);
175 175
176# static methods. not really. 176# static methods. not really.
177 177
178=back 178=back
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224The pool size is limited to 8 idle coroutines (this can be adjusted by 224The pool size is limited to 8 idle coroutines (this can be adjusted by
225changing $Coro::POOL_SIZE), and there can be as many non-idle coros as 225changing $Coro::POOL_SIZE), and there can be as many non-idle coros as
226required. 226required.
227 227
228If you are concerned about pooled coroutines growing a lot because a 228If you are concerned about pooled coroutines growing a lot because a
229single C<async_pool> used a lot of stackspace you can e.g. C<async_pool { 229single C<async_pool> used a lot of stackspace you can e.g. C<async_pool
230terminate }> once per second or so to slowly replenish the pool. 230{ terminate }> once per second or so to slowly replenish the pool. In
231addition to that, when the stacks used by a handler grows larger than 16kb
232(adjustable with $Coro::POOL_RSS) it will also exit.
231 233
232=cut 234=cut
233 235
234our $POOL_SIZE = 8; 236our $POOL_SIZE = 8;
237our $POOL_RSS = 16 * 1024;
235our @pool; 238our @async_pool;
236 239
237sub pool_handler { 240sub pool_handler {
241 my $cb;
242
238 while () { 243 while () {
239 $current->{desc} = "[async_pool]";
240
241 eval { 244 eval {
242 my ($cb, @arg) = @{ delete $current->{_invoke} or return }; 245 while () {
243 $cb->(@arg); 246 _pool_1 $cb;
247 &$cb;
248 _pool_2 $cb;
249 &schedule;
250 }
244 }; 251 };
252
253 last if $@ eq "\3terminate\2\n";
245 warn $@ if $@; 254 warn $@ if $@;
246
247 last if @pool >= $POOL_SIZE;
248
249 push @pool, $current;
250 $current->{desc} = "[async_pool idle]";
251 $current->save (Coro::State::SAVE_DEF);
252 $current->prio (0);
253 schedule;
254 } 255 }
255} 256}
256 257
257sub async_pool(&@) { 258sub async_pool(&@) {
258 # this is also inlined into the unlock_scheduler 259 # this is also inlined into the unlock_scheduler
259 my $coro = (pop @pool) || new Coro \&pool_handler;; 260 my $coro = (pop @async_pool) || new Coro \&pool_handler;
260 261
261 $coro->{_invoke} = [@_]; 262 $coro->{_invoke} = [@_];
262 $coro->ready; 263 $coro->ready;
263 264
264 $coro 265 $coro
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530 531
531# we create a special coro because we want to cede, 532# we create a special coro because we want to cede,
532# to reduce pressure on the coro pool (because most callbacks 533# to reduce pressure on the coro pool (because most callbacks
533# return immediately and can be reused) and because we cannot cede 534# return immediately and can be reused) and because we cannot cede
534# inside an event callback. 535# inside an event callback.
535our $unblock_scheduler = async { 536our $unblock_scheduler = new Coro sub {
536 $current->desc ("[unblock_sub scheduler]");
537 while () { 537 while () {
538 while (my $cb = pop @unblock_queue) { 538 while (my $cb = pop @unblock_queue) {
539 # this is an inlined copy of async_pool 539 # this is an inlined copy of async_pool
540 my $coro = (pop @pool or new Coro \&pool_handler); 540 my $coro = (pop @async_pool) || new Coro \&pool_handler;
541 541
542 $coro->{_invoke} = $cb; 542 $coro->{_invoke} = $cb;
543 $coro->ready; 543 $coro->ready;
544 cede; # for short-lived callbacks, this reduces pressure on the coro pool 544 cede; # for short-lived callbacks, this reduces pressure on the coro pool
545 } 545 }
546 schedule; # sleep well 546 schedule; # sleep well
547 } 547 }
548}; 548};
549$unblock_scheduler->desc ("[unblock_sub scheduler]");
549 550
550sub unblock_sub(&) { 551sub unblock_sub(&) {
551 my $cb = shift; 552 my $cb = shift;
552 553
553 sub { 554 sub {

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