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Comparing libev/ev.3 (file contents):
Revision 1.103 by root, Fri May 1 17:23:34 2015 UTC vs.
Revision 1.104 by root, Sun Dec 20 01:35:55 2015 UTC

1.\" Automatically generated by Pod::Man 2.28 (Pod::Simple 3.28) 1.\" Automatically generated by Pod::Man 2.28 (Pod::Simple 3.30)
2.\" 2.\"
3.\" Standard preamble: 3.\" Standard preamble:
4.\" ======================================================================== 4.\" ========================================================================
5.de Sp \" Vertical space (when we can't use .PP) 5.de Sp \" Vertical space (when we can't use .PP)
6.if t .sp .5v 6.if t .sp .5v
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131.\} 131.\}
132.rm #[ #] #H #V #F C 132.rm #[ #] #H #V #F C
133.\" ======================================================================== 133.\" ========================================================================
134.\" 134.\"
135.IX Title "LIBEV 3" 135.IX Title "LIBEV 3"
136.TH LIBEV 3 "2015-05-01" "libev-4.19" "libev - high performance full featured event loop" 136.TH LIBEV 3 "2015-12-20" "libev-4.20" "libev - high performance full featured event loop"
137.\" For nroff, turn off justification. Always turn off hyphenation; it makes 137.\" For nroff, turn off justification. Always turn off hyphenation; it makes
138.\" way too many mistakes in technical documents. 138.\" way too many mistakes in technical documents.
139.if n .ad l 139.if n .ad l
140.nh 140.nh
141.SH "NAME" 141.SH "NAME"
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541GNU/Linux system for example, \f(CW\*(C`getpid\*(C'\fR is actually a simple 5\-insn sequence 541GNU/Linux system for example, \f(CW\*(C`getpid\*(C'\fR is actually a simple 5\-insn sequence
542without a system call and thus \fIvery\fR fast, but my GNU/Linux system also has 542without a system call and thus \fIvery\fR fast, but my GNU/Linux system also has
543\&\f(CW\*(C`pthread_atfork\*(C'\fR which is even faster). 543\&\f(CW\*(C`pthread_atfork\*(C'\fR which is even faster).
544.Sp 544.Sp
545The big advantage of this flag is that you can forget about fork (and 545The big advantage of this flag is that you can forget about fork (and
546forget about forgetting to tell libev about forking) when you use this 546forget about forgetting to tell libev about forking, although you still
547flag. 547have to ignore \f(CW\*(C`SIGPIPE\*(C'\fR) when you use this flag.
548.Sp 548.Sp
549This flag setting cannot be overridden or specified in the \f(CW\*(C`LIBEV_FLAGS\*(C'\fR 549This flag setting cannot be overridden or specified in the \f(CW\*(C`LIBEV_FLAGS\*(C'\fR
550environment variable. 550environment variable.
551.ie n .IP """EVFLAG_NOINOTIFY""" 4 551.ie n .IP """EVFLAG_NOINOTIFY""" 4
552.el .IP "\f(CWEVFLAG_NOINOTIFY\fR" 4 552.el .IP "\f(CWEVFLAG_NOINOTIFY\fR" 4
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816to reinitialise the kernel state for backends that have one. Despite 816to reinitialise the kernel state for backends that have one. Despite
817the name, you can call it anytime you are allowed to start or stop 817the name, you can call it anytime you are allowed to start or stop
818watchers (except inside an \f(CW\*(C`ev_prepare\*(C'\fR callback), but it makes most 818watchers (except inside an \f(CW\*(C`ev_prepare\*(C'\fR callback), but it makes most
819sense after forking, in the child process. You \fImust\fR call it (or use 819sense after forking, in the child process. You \fImust\fR call it (or use
820\&\f(CW\*(C`EVFLAG_FORKCHECK\*(C'\fR) in the child before resuming or calling \f(CW\*(C`ev_run\*(C'\fR. 820\&\f(CW\*(C`EVFLAG_FORKCHECK\*(C'\fR) in the child before resuming or calling \f(CW\*(C`ev_run\*(C'\fR.
821.Sp
822In addition, if you want to reuse a loop (via this function or
823\&\f(CW\*(C`EVFLAG_FORKCHECK\*(C'\fR), you \fIalso\fR have to ignore \f(CW\*(C`SIGPIPE\*(C'\fR.
821.Sp 824.Sp
822Again, you \fIhave\fR to call it on \fIany\fR loop that you want to re-use after 825Again, you \fIhave\fR to call it on \fIany\fR loop that you want to re-use after
823a fork, \fIeven if you do not plan to use the loop in the parent\fR. This is 826a fork, \fIeven if you do not plan to use the loop in the parent\fR. This is
824because some kernel interfaces *cough* \fIkqueue\fR *cough* do funny things 827because some kernel interfaces *cough* \fIkqueue\fR *cough* do funny things
825during fork. 828during fork.

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