Fedora Packages


Additional B helpers to check Copy On Write status

B::COW provides some naïve additional B helpers to check the Copy On Write (COW) status of one SvPV (a Perl string variable). A COWed SvPV is sharing its string (the PV) with other SvPVs. It's a (kind of) Read Only C string, which would be Copied On Write (COW). More than one SV can share the same PV, but when one PV needs to alter it, it would perform a copy of it, decreasing the COWREFCNT counter. One SV can then drop the COW flag when it's the only one holding a pointer to the PV. The COWREFCNT is stored at the end of the PV, after the null byte terminating the string. That value is limited to 255: when we reach 255, a new PV would be created.

Releases Overview

Release Stable Testing
Fedora Rawhide 0.007-4.fc39 -
Fedora 39 0.007-4.fc39 -
Fedora 38 0.007-2.fc38 -
Fedora 37 0.004-10.fc37 -
EPEL 8 0.004-2.el8 -
EPEL 7 0.004-1.el7 -
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Package Info

You can contact the maintainers of this package via email at perl-B-COW dash maintainers at fedoraproject dot org.

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