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[ Source: libb-cow-perl  ]

Package: libb-cow-perl (0.004-1 and others)

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additional B helpers to check COW status

B::COW provides some naive additional B helpers to check the COW status of one SvPV.

A COWed SvPV is sharing its string (the PV) with other SvPVs. It's a (kind of) Read Only C string, that would be Copied On Write (COW).

More than one SV can share the same PV, but when one PV need to alter it, it would perform a copy of it, decrease 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 "\0".

That value is limited to 255, after that a new PV would be created,

Tags: Software Development: Perl Development, Libraries, Implemented in: implemented-in::c, implemented-in::perl, Role: Development Library

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Download for all available architectures
Architecture Version Package Size Installed Size Files
alpha (unofficial port) 0.004-1+b2 8.9 kB40.0 kB [list of files]
amd64 0.004-1+b2 8.9 kB48.0 kB [list of files]
arm64 0.004-1+b2 8.8 kB40.0 kB [list of files]
armel 0.004-1+b2 8.5 kB36.0 kB [list of files]
armhf 0.004-1+b2 8.5 kB36.0 kB [list of files]
hppa (unofficial port) 0.004-1+b2 9.4 kB40.0 kB [list of files]
i386 0.004-1+b2 9.1 kB48.0 kB [list of files]
ia64 (unofficial port) 0.004-1+b2 9.3 kB40.0 kB [list of files]
m68k (unofficial port) 0.004-1+b2 8.6 kB48.0 kB [list of files]
mips64el 0.004-1+b2 8.7 kB41.0 kB [list of files]
mipsel 0.004-1+b2 8.6 kB36.0 kB [list of files]
ppc64 (unofficial port) 0.004-1+b2 9.0 kB160.0 kB [list of files]
ppc64el 0.004-1+b2 9.0 kB160.0 kB [list of files]
riscv64 (unofficial port) 0.004-1+b2 8.6 kB36.0 kB [list of files]
s390x 0.004-1+b2 8.8 kB44.0 kB [list of files]
sh4 (unofficial port) 0.004-1+b2 8.7 kB36.0 kB [list of files]
sparc64 (unofficial port) 0.004-1+b2 8.8 kB41.0 kB [list of files]
x32 (unofficial port) 0.004-1+b2 8.8 kB48.0 kB [list of files]