diff options
Diffstat (limited to 'distro')
| -rw-r--r-- | distro/packages/pth.scm | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/distro/packages/pth.scm b/distro/packages/pth.scm new file mode 100644 index 0000000000..94e0dbbaee --- /dev/null +++ b/distro/packages/pth.scm @@ -0,0 +1,60 @@ +;;; Guix --- Nix package management from Guile. -*- coding: utf-8 -*- +;;; Copyright (C) 2012 Ludovic Courtès <ludo@gnu.org> +;;; +;;; This file is part of Guix. +;;; +;;; Guix is free software; you can redistribute it and/or modify it +;;; under the terms of the GNU General Public License as published by +;;; the Free Software Foundation; either version 3 of the License, or (at +;;; your option) any later version. +;;; +;;; Guix is distributed in the hope that it will be useful, but +;;; WITHOUT ANY WARRANTY; without even the implied warranty of +;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +;;; GNU General Public License for more details. +;;; +;;; You should have received a copy of the GNU General Public License +;;; along with Guix. If not, see <http://www.gnu.org/licenses/>. + +(define-module (distro packages pth) + #:use-module (guix packages) + #:use-module (guix ftp) + #:use-module (guix build-system gnu)) + +(define-public pth + (package + (name "pth") + (version "2.0.7") + (source + (origin + (method ftp-fetch) + (uri (string-append "ftp://ftp.gnu.org/gnu/pth/pth-" version + ".tar.gz")) + (sha256 + (base32 + "0ckjqw5kz5m30srqi87idj7xhpw6bpki43mj07bazjm2qmh3cdbj")))) + (build-system gnu-build-system) + (arguments '(#:parallel-build? #f)) + (home-page "http://www.gnu.org/software/pth") + (synopsis "The GNU Portable Threads library") + (description + "Pth is a very portable POSIX/ANSI-C based library for Unix +platforms which provides non-preemptive priority-based scheduling for +multiple threads of execution (aka ``multithreading'') inside +event-driven applications. All threads run in the same address space of +the server application, but each thread has it's own individual +program-counter, run-time stack, signal mask and errno variable. + +The thread scheduling itself is done in a cooperative way, i.e., the +threads are managed by a priority- and event-based non-preemptive +scheduler. The intention is that this way one can achieve better +portability and run-time performance than with preemptive +scheduling. The event facility allows threads to wait until various +types of events occur, including pending I/O on file descriptors, +asynchronous signals, elapsed timers, pending I/O on message ports, +thread and process termination, and even customized callback functions. + +Additionally Pth provides an optional emulation API for POSIX.1c +threads (\"Pthreads\") which can be used for backward compatibility to +existing multithreaded applications.") + (license #f))) |