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Comparing libev/ev.pod (file contents):
Revision 1.378 by sf-exg, Thu Jul 7 16:30:49 2011 UTC vs.
Revision 1.379 by root, Tue Jul 12 23:32:10 2011 UTC

… …
4376provide your own type that you know is safe for your purposes. It is used 4376provide your own type that you know is safe for your purposes. It is used
4377both for signal handler "locking" as well as for signal and thread safety 4377both for signal handler "locking" as well as for signal and thread safety
4378in C<ev_async> watchers. 4378in C<ev_async> watchers.
4379 4379
4380In the absence of this define, libev will use C<sig_atomic_t volatile> 4380In the absence of this define, libev will use C<sig_atomic_t volatile>
4381(from F<signal.h>), which is usually good enough on most platforms. 4381(from F<signal.h>), which is usually good enough on most platforms,
4382although strictly speaking using a type that also implies a memory fence
4383is required.
4382 4384
4383=item EV_H (h) 4385=item EV_H (h)
4384 4386
4385The name of the F<ev.h> header file used to include it. The default if 4387The name of the F<ev.h> header file used to include it. The default if
4386undefined is C<"ev.h"> in F<event.h>, F<ev.c> and F<ev++.h>. This can be 4388undefined is C<"ev.h"> in F<event.h>, F<ev.c> and F<ev++.h>. This can be

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