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Diffstat (limited to 'var/spack/repos/builtin/packages/perl-sys-sigaction/package.py')
| -rw-r--r-- | var/spack/repos/builtin/packages/perl-sys-sigaction/package.py | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/var/spack/repos/builtin/packages/perl-sys-sigaction/package.py b/var/spack/repos/builtin/packages/perl-sys-sigaction/package.py new file mode 100644 index 0000000000..50118db548 --- /dev/null +++ b/var/spack/repos/builtin/packages/perl-sys-sigaction/package.py @@ -0,0 +1,28 @@ +# Copyright 2013-2019 Lawrence Livermore National Security, LLC and other +# Spack Project Developers. See the top-level COPYRIGHT file for details. +# +# SPDX-License-Identifier: (Apache-2.0 OR MIT) + +from spack import * + + +class PerlSysSigaction(PerlPackage): + """Prior to version 5.8.0 perl implemented 'unsafe' signal handling. The + reason it is consider unsafe, is that there is a risk that a signal will + arrive, and be handled while perl is changing internal data structures. + This can result in all kinds of subtle and not so subtle problems. For this + reason it has always been recommended that one do as little as possible in + a signal handler, and only variables that already exist be manipulated. + + Perl 5.8.0 and later versions implements 'safe' signal handling on + platforms which support the POSIX sigaction() function. This is + accomplished by having perl note that a signal has arrived, but deferring + the execution of the signal handler until such time as it is safe to do so. + Unfortunately these changes can break some existing scripts, if they + depended on a system routine being interrupted by the signal's arrival. The + perl 5.8.0 implementation was modified further in version 5.8.2""" + + homepage = "https://metacpan.org/pod/Sys::SigAction" + url = "https://cpan.metacpan.org/authors/id/L/LB/LBAXTER/Sys-SigAction-0.23.tar.gz" + + version('0.23', sha256='c4ef6c9345534031fcbbe2adc347fc7194d47afc945e7a44fac7e9563095d353') |