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210 | Similar to C<async>, but uses a coroutine pool, so you should not call |
210 | Similar to C<async>, but uses a coroutine pool, so you should not call |
211 | terminate or join (although you are allowed to), and you get a coroutine |
211 | terminate or join (although you are allowed to), and you get a coroutine |
212 | that might have executed other code already (which can be good or bad :). |
212 | that might have executed other code already (which can be good or bad :). |
213 | |
213 | |
214 | Also, the block is executed in an C<eval> context and a warning will be |
214 | Also, the block is executed in an C<eval> context and a warning will be |
215 | issued in case of an exception instead of terminating the program, as C<async> does. |
215 | issued in case of an exception instead of terminating the program, as |
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216 | C<async> does. As the coroutine is being reused, stuff like C<on_destroy> |
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217 | will not work in the expected way, unless you call terminate or cancel, |
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218 | which somehow defeats the purpose of pooling. |
216 | |
219 | |
217 | The priority will be reset to C<0> after each job, otherwise the coroutine |
220 | The priority will be reset to C<0> after each job, otherwise the coroutine |
218 | will be re-used "as-is". |
221 | will be re-used "as-is". |
219 | |
222 | |
220 | The pool size is limited to 8 idle coroutines (this can be adjusted by |
223 | The pool size is limited to 8 idle coroutines (this can be adjusted by |
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230 | our $POOL_SIZE = 8; |
233 | our $POOL_SIZE = 8; |
231 | our @pool; |
234 | our @pool; |
232 | |
235 | |
233 | sub pool_handler { |
236 | sub pool_handler { |
234 | while () { |
237 | while () { |
235 | my ($cb, @arg) = @{ delete $current->{_invoke} }; |
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236 | |
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237 | eval { |
238 | eval { |
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239 | my ($cb, @arg) = @{ delete $current->{_invoke} or return }; |
238 | $cb->(@arg); |
240 | $cb->(@arg); |
239 | }; |
241 | }; |
240 | warn $@ if $@; |
242 | warn $@ if $@; |
241 | |
243 | |
242 | last if @pool >= $POOL_SIZE; |
244 | last if @pool >= $POOL_SIZE; |