… | |
… | |
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 |