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[ Source: libb-cow-perl  ]

Package: libb-cow-perl (0.007-1 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) 0.007-1 b3 8.9 kB95.0 kB [list of files]
amd64 0.007-1 b3 8.9 kB43.0 kB [list of files]
arm64 0.007-1 b3 8.9 kB95.0 kB [list of files]
armel 0.007-1 b3 8.6 kB35.0 kB [list of files]
armhf 0.007-1 b3 8.5 kB35.0 kB [list of files]
hppa (unofficial port) 0.007-1 b3 9.2 kB39.0 kB [list of files]
i386 0.007-1 b3 8.9 kB43.0 kB [list of files]
ia64 (unofficial port) 0.007-1 b2 9.5 kB38.0 kB [list of files]
m68k (unofficial port) 0.007-1 b3 8.5 kB39.0 kB [list of files]
mips64el 0.007-1 b3 8.8 kB96.0 kB [list of files]
ppc64 (unofficial port) 0.007-1 b3 9.3 kB96.0 kB [list of files]
ppc64el 0.007-1 b3 9.1 kB95.0 kB [list of files]
riscv64 0.007-1 b3 8.7 kB35.0 kB [list of files]
s390x 0.007-1 b3 8.9 kB39.0 kB [list of files]
sh4 (unofficial port) 0.007-1 b3 8.8 kB95.0 kB [list of files]
sparc64 (unofficial port) 0.007-1 b3 8.9 kB1,056.0 kB [list of files]
x32 (unofficial port) 0.007-1 b3 8.8 kB43.0 kB [list of files]