62 lines
2.5 KiB
Scheme
62 lines
2.5 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
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;;; Copyright © 2012 Ludovic Courtès <ludo@gnu.org>
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;;;
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;;; This file is part of GNU Guix.
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;;;
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;;; GNU Guix is free software; you can redistribute it and/or modify it
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;;; under the terms of the GNU General Public License as published by
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;;; the Free Software Foundation; either version 3 of the License, or (at
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;;; your option) any later version.
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;;;
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;;; GNU Guix is distributed in the hope that it will be useful, but
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;;; WITHOUT ANY WARRANTY; without even the implied warranty of
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;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;;; GNU General Public License for more details.
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;;;
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;;; You should have received a copy of the GNU General Public License
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;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
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(define-module (distro packages pth)
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#:use-module (guix licenses)
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#:use-module (guix packages)
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#:use-module (guix download)
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#:use-module (guix build-system gnu))
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(define-public pth
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(package
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(name "pth")
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(version "2.0.7")
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(source
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(origin
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(method url-fetch)
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(uri (string-append "mirror://gnu/pth/pth-" version
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".tar.gz"))
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(sha256
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(base32
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"0ckjqw5kz5m30srqi87idj7xhpw6bpki43mj07bazjm2qmh3cdbj"))))
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(build-system gnu-build-system)
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(arguments '(#:parallel-build? #f))
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(home-page "http://www.gnu.org/software/pth")
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(synopsis "The GNU Portable Threads library")
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(description
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"Pth is a very portable POSIX/ANSI-C based library for Unix
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platforms which provides non-preemptive priority-based scheduling for
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multiple threads of execution (aka ``multithreading'') inside
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event-driven applications. All threads run in the same address space of
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the server application, but each thread has it's own individual
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program-counter, run-time stack, signal mask and errno variable.
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The thread scheduling itself is done in a cooperative way, i.e., the
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threads are managed by a priority- and event-based non-preemptive
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scheduler. The intention is that this way one can achieve better
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portability and run-time performance than with preemptive
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scheduling. The event facility allows threads to wait until various
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types of events occur, including pending I/O on file descriptors,
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asynchronous signals, elapsed timers, pending I/O on message ports,
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thread and process termination, and even customized callback functions.
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Additionally Pth provides an optional emulation API for POSIX.1c
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threads (\"Pthreads\") which can be used for backward compatibility to
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existing multithreaded applications.")
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(license lgpl2.1+)))
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