… | |
… | |
374 | |
374 | |
375 | This can be used to localise about any resource (locale, uid, current |
375 | This can be used to localise about any resource (locale, uid, current |
376 | working directory etc.) to a block, despite the existance of other |
376 | working directory etc.) to a block, despite the existance of other |
377 | coros. |
377 | coros. |
378 | |
378 | |
|
|
379 | Another interesting example implements time-sliced multitasking using |
|
|
380 | interval timers (this could obviously be optimised, but does the job): |
|
|
381 | |
|
|
382 | # "timeslice" the given block |
|
|
383 | sub timeslice(&) { |
|
|
384 | use Time::HiRes (); |
|
|
385 | |
|
|
386 | Coro::on_enter { |
|
|
387 | # on entering the thread, we set an VTALRM handler to cede |
|
|
388 | $SIG{VTALRM} = sub { cede }; |
|
|
389 | # and then start the interval timer |
|
|
390 | Time::HiRes::setitimer &Time::HiRes::ITIMER_VIRTUAL, 0.01, 0.01; |
|
|
391 | }; |
|
|
392 | Coro::on_leave { |
|
|
393 | # on leaving the thread, we stop the interval timer again |
|
|
394 | Time::HiRes::setitimer &Time::HiRes::ITIMER_VIRTUAL, 0, 0; |
|
|
395 | }; |
|
|
396 | |
|
|
397 | &{+shift}; |
|
|
398 | } |
|
|
399 | |
|
|
400 | # use like this: |
|
|
401 | timeslice { |
|
|
402 | # The following is an endless loop that would normally |
|
|
403 | # monopolise the process. Since it runs in a timesliced |
|
|
404 | # environment, it will regularly cede to other threads. |
|
|
405 | while () { } |
|
|
406 | }; |
|
|
407 | |
|
|
408 | |
379 | =item killall |
409 | =item killall |
380 | |
410 | |
381 | Kills/terminates/cancels all coros except the currently running one. |
411 | Kills/terminates/cancels all coros except the currently running one. |
382 | |
412 | |
383 | Note that while this will try to free some of the main interpreter |
413 | Note that while this will try to free some of the main interpreter |