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Diffstat (limited to 'ev.pod')
| -rw-r--r-- | ev.pod | 20 |
1 files changed, 20 insertions, 0 deletions
@@ -268,6 +268,26 @@ override the flags completely if it is found in the environment. This is useful to try out specific backends to test their performance, or to work around bugs. +=item C<EVFLAG_FORKCHECK> + +Instead of calling C<ev_default_fork> or C<ev_loop_fork> manually after +a fork, you can also make libev check for a fork in each iteration by +enabling this flag. + +This works by calling C<getpid ()> on every iteration of the loop, +and thus this might slow down your event loop if you do a lot of loop +iterations and little real work, but is usually not noticable (on my +Linux system for example, C<getpid> is actually a simple 5-insn sequence +without a syscall and thus I<very> fast, but my Linux system also has +C<pthread_atfork> which is even faster). + +The big advantage of this flag is that you can forget about fork (and +forget about forgetting to tell libev about forking) when you use this +flag. + +This flag setting cannot be overriden or specified in the C<LIBEV_FLAGS> +environment variable. + =item C<EVBACKEND_SELECT> (value 1, portable select backend) This is your standard select(2) backend. Not I<completely> standard, as |