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1 | ;;; GNU Guix --- Functional package management for GNU |
2 | ;;; Copyright © 2012 Ludovic Courtès <ludo@gnu.org> | |
d373e57e | 3 | ;;; |
233e7676 | 4 | ;;; This file is part of GNU Guix. |
d373e57e | 5 | ;;; |
233e7676 | 6 | ;;; GNU Guix is free software; you can redistribute it and/or modify it |
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7 | ;;; under the terms of the GNU General Public License as published by |
8 | ;;; the Free Software Foundation; either version 3 of the License, or (at | |
9 | ;;; your option) any later version. | |
10 | ;;; | |
233e7676 | 11 | ;;; GNU Guix is distributed in the hope that it will be useful, but |
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12 | ;;; WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | ;;; GNU General Public License for more details. | |
15 | ;;; | |
16 | ;;; You should have received a copy of the GNU General Public License | |
233e7676 | 17 | ;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>. |
d373e57e | 18 | |
1ffa7090 | 19 | (define-module (gnu packages pth) |
4a44e743 | 20 | #:use-module (guix licenses) |
d373e57e | 21 | #:use-module (guix packages) |
87f5d366 | 22 | #:use-module (guix download) |
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23 | #:use-module (guix build-system gnu)) |
24 | ||
25 | (define-public pth | |
26 | (package | |
27 | (name "pth") | |
28 | (version "2.0.7") | |
29 | (source | |
30 | (origin | |
87f5d366 | 31 | (method url-fetch) |
0db342a5 | 32 | (uri (string-append "mirror://gnu/pth/pth-" version |
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33 | ".tar.gz")) |
34 | (sha256 | |
35 | (base32 | |
36 | "0ckjqw5kz5m30srqi87idj7xhpw6bpki43mj07bazjm2qmh3cdbj")))) | |
37 | (build-system gnu-build-system) | |
38 | (arguments '(#:parallel-build? #f)) | |
39 | (home-page "http://www.gnu.org/software/pth") | |
40 | (synopsis "The GNU Portable Threads library") | |
41 | (description | |
42 | "Pth is a very portable POSIX/ANSI-C based library for Unix | |
43 | platforms which provides non-preemptive priority-based scheduling for | |
44 | multiple threads of execution (aka ``multithreading'') inside | |
45 | event-driven applications. All threads run in the same address space of | |
46 | the server application, but each thread has it's own individual | |
47 | program-counter, run-time stack, signal mask and errno variable. | |
48 | ||
49 | The thread scheduling itself is done in a cooperative way, i.e., the | |
50 | threads are managed by a priority- and event-based non-preemptive | |
51 | scheduler. The intention is that this way one can achieve better | |
52 | portability and run-time performance than with preemptive | |
53 | scheduling. The event facility allows threads to wait until various | |
54 | types of events occur, including pending I/O on file descriptors, | |
55 | asynchronous signals, elapsed timers, pending I/O on message ports, | |
56 | thread and process termination, and even customized callback functions. | |
57 | ||
58 | Additionally Pth provides an optional emulation API for POSIX.1c | |
59 | threads (\"Pthreads\") which can be used for backward compatibility to | |
60 | existing multithreaded applications.") | |
4a44e743 | 61 | (license lgpl2.1+))) |