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233 | use common::sense; |
233 | use common::sense; |
234 | |
234 | |
235 | BEGIN { |
235 | BEGIN { |
236 | # the next line forces initialisation of internal |
236 | # the next line forces initialisation of internal |
237 | # signal handling variables, otherwise, PL_sig_pending |
237 | # signal handling variables, otherwise, PL_sig_pending |
238 | # etc. will be null pointers. |
238 | # etc. might be null pointers. |
239 | $SIG{KILL} = sub { }; |
239 | $SIG{KILL} = sub { }; |
240 | |
240 | |
241 | our $VERSION = '1.03'; |
241 | our $VERSION = '1.05'; |
242 | |
242 | |
243 | require XSLoader; |
243 | require XSLoader; |
244 | XSLoader::load ("Async::Interrupt", $VERSION); |
244 | XSLoader::load ("Async::Interrupt", $VERSION); |
245 | } |
245 | } |
246 | |
246 | |
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432 | When you expect a lot of signals (e.g. when using SIGIO), then enabling |
432 | When you expect a lot of signals (e.g. when using SIGIO), then enabling |
433 | signal hysteresis can reduce the number of handler invocations |
433 | signal hysteresis can reduce the number of handler invocations |
434 | considerably, at the cost of two extra syscalls. |
434 | considerably, at the cost of two extra syscalls. |
435 | |
435 | |
436 | Note that setting the signal to C<SIG_IGN> can have unintended side |
436 | Note that setting the signal to C<SIG_IGN> can have unintended side |
437 | effects when you fork and exec other programs, as often they do nto expect |
437 | effects when you fork and exec other programs, as often they do not expect |
438 | signals to be ignored by default. |
438 | signals to be ignored by default. |
439 | |
439 | |
440 | =item $async->block |
440 | =item $async->block |
441 | |
441 | |
442 | =item $async->unblock |
442 | =item $async->unblock |
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576 | |
576 | |
577 | =item $epipe->drain |
577 | =item $epipe->drain |
578 | |
578 | |
579 | Drain (empty) the pipe. |
579 | Drain (empty) the pipe. |
580 | |
580 | |
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581 | =item ($c_func, $c_arg) = $epipe->signal_func |
|
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582 | |
581 | =item ($c_func, $c_arg) = $epipe->drain_func |
583 | =item ($c_func, $c_arg) = $epipe->drain_func |
582 | |
584 | |
583 | Returns a function pointer and C<void *> argument that can be called to |
585 | These two methods returns a function pointer and C<void *> argument |
584 | have the effect of C<< $epipe->drain >> on the XS level. |
586 | that can be called to have the effect of C<< $epipe->signal >> or C<< |
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587 | $epipe->drain >>, respectively, on the XS level. |
585 | |
588 | |
586 | It has the following prototype and needs to be passed the specified |
589 | They both have the following prototype and need to be passed their |
587 | C<$c_arg>, which is a C<void *> cast to C<IV>: |
590 | C<$c_arg>, which is a C<void *> cast to an C<IV>: |
588 | |
591 | |
589 | void (*c_func) (void *c_arg) |
592 | void (*c_func) (void *c_arg) |
590 | |
593 | |
591 | An example call would look like: |
594 | An example call would look like: |
592 | |
595 | |