diff options
| -rw-r--r-- | pod/perlmod.pod | 3 | ||||
| -rw-r--r-- | sv.c | 3 |
2 files changed, 4 insertions, 2 deletions
diff --git a/pod/perlmod.pod b/pod/perlmod.pod index 53f3d21c65..63f0be9d2c 100644 --- a/pod/perlmod.pod +++ b/pod/perlmod.pod @@ -581,6 +581,9 @@ Like C<CLONE>, C<CLONE_SKIP> is called once per package; however, it is called just before cloning starts, and in the context of the parent thread. If it returns a true value, then no objects of that class will be cloned; or rather, they will be copied as unblessed, undef values. +For example: if in the parent there are two references to a single blessed +hash, then in the child there will be two references to a single undefined +scalar value instead. This provides a simple mechanism for making a module threadsafe; just add C<sub CLONE_SKIP { 1 }> at the top of the class, and C<DESTROY()> will be now only be called once per object. Of course, if the child thread needs @@ -10048,8 +10048,7 @@ Perl_sv_dup(pTHX_ const SV *sstr, CLONE_PARAMS* param) /* don't clone objects whose class has asked us not to */ if (SvOBJECT(sstr) && ! (SvFLAGS(SvSTASH(sstr)) & SVphv_CLONEABLE)) { - SvFLAGS(dstr) &= ~SVTYPEMASK; - SvOBJECT_off(dstr); + SvFLAGS(dstr) = 0; return dstr; } |