[ViewVC] Diff of: cvs/Coro-Multicore/perlmulticore.h

Comparing Coro-Multicore/perlmulticore.h (file contents):
Revision 1.6 by root, Sun Jun 28 18:30:48 2015 UTC vs.
Revision 1.8 by root, Sun Jun 28 18:37:52 2015 UTC

 efficient when not needed, low code and data size overhead and broad
 applicability.
 =back
+=head1 DISABLING PERL MULTICORE AT COMPILE TIME
+You can disable the complete perl multicore API by defining the
+symbol C<PERL_MULTICORE_DISABLE> to C<1> (e.g. by specifying
+F<-DPERL_MULTICORE_DISABLE> as compiler argument).
+This will leave no traces of the API in the compiled code, suitable
+"empty" C<perl_release> and C<perl_acquire> definitions will be provided.
+This could be added to perl's C<CPPFLAGS> when configuring perl on
+platforms that do not support threading at all for example.
 =head1 AUTHOR
    Marc A. Lehmann <perlmulticore@schmorp.de>
    http://perlmulticore.schmorp.de/
 license: L<https://creativecommons.org/publicdomain/zero/1.0/>.
 =cut
 */
+#if PERL_MULTICORE_DISABLE
+#define perlinterp_release() do { } while (0)
+#define perlinterp_acquire() do { } while (0)
+#else
 /* this struct is shared between all modules, and currently */
 /* contain only the two function pointers for release/acquire */
 struct perl_multicore_api
 {
   /* call the real (or dummy) implementation now */
   perlinterp_release ();
 }
 #endif
+#endif

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