| … | |
… | |
| 113 | reasons. If performance is not essential you are encouraged to use the |
113 | reasons. If performance is not essential you are encouraged to use the |
| 114 | C<Coro::current> function instead. |
114 | C<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; |
| … | |
… | |
| 166 | while @destroy; |
168 | while @destroy; |
| 167 | |
169 | |
| 168 | &schedule; |
170 | &schedule; |
| 169 | } |
171 | } |
| 170 | }; |
172 | }; |
| 171 | |
173 | $manager->desc ("[coro manager]"); |
| 172 | $manager->prio (PRIO_MAX); |
174 | $manager->prio (PRIO_MAX); |
| 173 | |
175 | |
| 174 | # static methods. not really. |
176 | # static methods. not really. |
| 175 | |
177 | |
| 176 | =back |
178 | =back |
| … | |
… | |
| 222 | The pool size is limited to 8 idle coroutines (this can be adjusted by |
224 | The pool size is limited to 8 idle coroutines (this can be adjusted by |
| 223 | changing $Coro::POOL_SIZE), and there can be as many non-idle coros as |
225 | changing $Coro::POOL_SIZE), and there can be as many non-idle coros as |
| 224 | required. |
226 | required. |
| 225 | |
227 | |
| 226 | If you are concerned about pooled coroutines growing a lot because a |
228 | If you are concerned about pooled coroutines growing a lot because a |
| 227 | single C<async_pool> used a lot of stackspace you can e.g. C<async_pool { |
229 | single C<async_pool> used a lot of stackspace you can e.g. C<async_pool |
| 228 | terminate }> once per second or so to slowly replenish the pool. |
230 | { terminate }> once per second or so to slowly replenish the pool. In |
|
|
231 | addition to that, when the stacks used by a handler grows larger than 16kb |
|
|
232 | (adjustable with $Coro::MAX_POOL_RSS) it will also exit. |
| 229 | |
233 | |
| 230 | =cut |
234 | =cut |
| 231 | |
235 | |
| 232 | our $POOL_SIZE = 8; |
236 | our $POOL_SIZE = 8; |
|
|
237 | our $MAX_POOL_RSS = 16 * 1024; |
| 233 | our @pool; |
238 | our @pool; |
| 234 | |
239 | |
| 235 | sub pool_handler { |
240 | sub pool_handler { |
| 236 | while () { |
241 | while () { |
|
|
242 | $current->{desc} = "[async_pool]"; |
|
|
243 | |
| 237 | eval { |
244 | eval { |
| 238 | my ($cb, @arg) = @{ delete $current->{_invoke} or return }; |
245 | my ($cb, @arg) = @{ delete $current->{_invoke} or return }; |
| 239 | $cb->(@arg); |
246 | $cb->(@arg); |
| 240 | }; |
247 | }; |
| 241 | warn $@ if $@; |
248 | warn $@ if $@; |
| 242 | |
249 | |
| 243 | last if @pool >= $POOL_SIZE; |
250 | last if @pool >= $POOL_SIZE || $current->rss >= $MAX_POOL_RSS; |
|
|
251 | |
| 244 | push @pool, $current; |
252 | push @pool, $current; |
| 245 | |
253 | $current->{desc} = "[async_pool idle]"; |
| 246 | $current->save (Coro::State::SAVE_DEF); |
254 | $current->save (Coro::State::SAVE_DEF); |
| 247 | $current->prio (0); |
255 | $current->prio (0); |
| 248 | schedule; |
256 | schedule; |
| 249 | } |
257 | } |
| 250 | } |
258 | } |
| 251 | |
259 | |
| 252 | sub async_pool(&@) { |
260 | sub async_pool(&@) { |
| 253 | # this is also inlined into the unlock_scheduler |
261 | # this is also inlined into the unlock_scheduler |
| 254 | my $coro = (pop @pool) || do { |
|
|
| 255 | my $coro = new Coro \&pool_handler; |
262 | my $coro = (pop @pool) || new Coro \&pool_handler;; |
| 256 | $coro->{desc} = "async_pool"; |
|
|
| 257 | $coro |
|
|
| 258 | }; |
|
|
| 259 | |
263 | |
| 260 | $coro->{_invoke} = [@_]; |
264 | $coro->{_invoke} = [@_]; |
| 261 | $coro->ready; |
265 | $coro->ready; |
| 262 | |
266 | |
| 263 | $coro |
267 | $coro |
| … | |
… | |
| 529 | |
533 | |
| 530 | # we create a special coro because we want to cede, |
534 | # we create a special coro because we want to cede, |
| 531 | # to reduce pressure on the coro pool (because most callbacks |
535 | # to reduce pressure on the coro pool (because most callbacks |
| 532 | # return immediately and can be reused) and because we cannot cede |
536 | # return immediately and can be reused) and because we cannot cede |
| 533 | # inside an event callback. |
537 | # inside an event callback. |
| 534 | our $unblock_scheduler = async { |
538 | our $unblock_scheduler = new Coro sub { |
| 535 | while () { |
539 | while () { |
| 536 | while (my $cb = pop @unblock_queue) { |
540 | while (my $cb = pop @unblock_queue) { |
| 537 | # this is an inlined copy of async_pool |
541 | # this is an inlined copy of async_pool |
| 538 | my $coro = (pop @pool or new Coro \&pool_handler); |
542 | my $coro = (pop @pool or new Coro \&pool_handler); |
| 539 | |
543 | |
| … | |
… | |
| 542 | cede; # for short-lived callbacks, this reduces pressure on the coro pool |
546 | cede; # for short-lived callbacks, this reduces pressure on the coro pool |
| 543 | } |
547 | } |
| 544 | schedule; # sleep well |
548 | schedule; # sleep well |
| 545 | } |
549 | } |
| 546 | }; |
550 | }; |
|
|
551 | $unblock_scheduler->desc ("[unblock_sub scheduler]"); |
| 547 | |
552 | |
| 548 | sub unblock_sub(&) { |
553 | sub unblock_sub(&) { |
| 549 | my $cb = shift; |
554 | my $cb = shift; |
| 550 | |
555 | |
| 551 | sub { |
556 | sub { |
