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Comparing libev/ev.pod (file contents):
Revision 1.425 by root, Tue Jan 22 03:53:01 2013 UTC vs.
Revision 1.427 by root, Sun Apr 28 14:57:12 2013 UTC

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396 396
397If this flag bit is or'ed into the flag value (or the program runs setuid 397If this flag bit is or'ed into the flag value (or the program runs setuid
398or setgid) then libev will I<not> look at the environment variable 398or setgid) then libev will I<not> look at the environment variable
399C<LIBEV_FLAGS>. Otherwise (the default), this environment variable will 399C<LIBEV_FLAGS>. Otherwise (the default), this environment variable will
400override the flags completely if it is found in the environment. This is 400override the flags completely if it is found in the environment. This is
401useful to try out specific backends to test their performance, or to work 401useful to try out specific backends to test their performance, to work
402around bugs. 402around bugs, or to make libev threadsafe (accessing environment variables
403cannot be done in a threadsafe way, but usually it works if no other
404thread modifies them).
403 405
404=item C<EVFLAG_FORKCHECK> 406=item C<EVFLAG_FORKCHECK>
405 407
406Instead of calling C<ev_loop_fork> manually after a fork, you can also 408Instead of calling C<ev_loop_fork> manually after a fork, you can also
407make libev check for a fork in each iteration by enabling this flag. 409make libev check for a fork in each iteration by enabling this flag.
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4618different cpus (or different cpu cores). This reduces dependencies 4620different cpus (or different cpu cores). This reduces dependencies
4619and makes libev faster. 4621and makes libev faster.
4620 4622
4621=item EV_NO_THREADS 4623=item EV_NO_THREADS
4622 4624
4623If defined to be C<1>, libev will assume that it will never be called 4625If defined to be C<1>, libev will assume that it will never be called from
4624from different threads, which is a stronger assumption than C<EV_NO_SMP>, 4626different threads (that includes signal handlers), which is a stronger
4625above. This reduces dependencies and makes libev faster. 4627assumption than C<EV_NO_SMP>, above. This reduces dependencies and makes
4628libev faster.
4626 4629
4627=item EV_ATOMIC_T 4630=item EV_ATOMIC_T
4628 4631
4629Libev requires an integer type (suitable for storing C<0> or C<1>) whose 4632Libev requires an integer type (suitable for storing C<0> or C<1>) whose
4630access is atomic with respect to other threads or signal contexts. No 4633access is atomic with respect to other threads or signal contexts. No

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