[ViewVC] Diff of: cvs/perlmulticore/perlmulticore.pod

Comparing perlmulticore/perlmulticore.pod (file contents):
Revision 1.9 by root, Sun Mar 3 10:59:48 2019 UTC vs.
Revision 1.10 by root, Mon Mar 4 06:34:59 2019 UTC

    $existing_hash{perl_multicore_api} = "123456781234567812345678";
 And that's it, which is, as I think, indeed very little.
-As for code size, on my amd64 system, every call to C<perlinterp_release>
+As for code size and speed, on my amd64 system, every call to
-or C<perlinterp_acquire> results in a variation of the following 9-10
+C<perlinterp_release> or C<perlinterp_acquire> results in a variation of
-octet sequence:
+the following 9-10 octet sequence which is easy to predict for modern
+CPUs, as the function pointer is constant after initialisation:
    150>   mov    0x200f23(%rip),%rax  # <perl_multicore_api>
    157>   callq  *0x8(%rax)
+The actual function being called when no backend is installed or enabled
+looks like this:
+   1310>  retq
 The biggest part is the initialisation code, which consists of 11 lines of
 typical XS code. On my system, all the code in F<perlmulticore.h> compiles
 to less than 160 octets of read-only data.

-–
+Removed lines
-+
+Added lines
-<
+Changed lines
->
+Changed lines