R Observatory: Metrics for semaphore version 1.2.0

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

semaphore

1.2.0

Shared Memory Atomic Operations

0packages depend

2Kdownloads / year

100.0%test coverage

13/13checks pass

Overview

About

Maintained by Daniel P. SmithFirst published 2024-11-114 releasesCRAN page ↗GitHub ↗

Implements named semaphores from the 'boost' 'C++' library https://www.boost.org/ for interprocess communication. Multiple 'R' sessions on the same host can block (with optional timeout) on a semaphore until it becomes positive, then atomically decrement it and unblock. Any session can increment the semaphore.

Install

R (CRAN)pak (dev)Ubuntu (r2u)Fedora (COPR)openSUSE (OBS)

install.packages("semaphore", repos = "https://cloud.r-project.org/")

Installs the current CRAN release. Prebuilt binaries on Windows and macOS.

if (!requireNamespace("pak", quietly = TRUE))
  install.packages("pak", repos = "https://cloud.r-project.org/")
pak::pak("cmmr/semaphore")

Development version from cmmr/semaphore. Installs pak first if it is not already available.

Release

# enable cranapt (r2u) if it is not already set up, then install
grep -rqs r2u.stat.illinois.edu /etc/apt/sources.list /etc/apt/sources.list.d/ \
  || curl -fsSL https://raw.githubusercontent.com/eddelbuettel/r2u/master/inst/scripts/add_cranapt_noble.sh | sudo bash
sudo apt install -y r-cran-semaphore

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled.

bspm (used by r2u) also needs make: sudo apt install make

# enable the iucar/cran COPR if it is not already present, then install
ls /etc/yum.repos.d/*iucar*cran*.repo >/dev/null 2>&1 \
  || sudo dnf copr enable -y iucar/cran
sudo dnf install -y R-CRAN-semaphore

RPMs from the iucar/cran COPR, rebuilt from CRAN.

For install.packages() integration in R, also: sudo dnf install R-CoprManager

# add the autoCRAN OBS repo (Tumbleweed) if it is missing, then install
zypper -q lr | grep -qi autoCRAN \
  || sudo zypper addrepo https://download.opensuse.org/repositories/devel:/languages:/R:/autoCRAN/openSUSE_Tumbleweed/devel:languages:R:autoCRAN.repo
sudo zypper install -y R-semaphore

RPMs auto-built from CRAN on openSUSE OBS (Tumbleweed).

Health

CRAN checks

13OK

Slowest check: 1.5 min · r-oldrel-windows-x86_64

Code health

Yes

Tests · ratio 0.31

100.0%

Coverage · measured lines

0%

Documentation · exports

1

Dependencies · direct

Check history

OK2026-08-04
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
NOTE2026-08-01
12 OK · 1 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
OK2026-04-22
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-04-18
13 OK · 0 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
OK2026-03-10
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMEYes · 120 wordsVignettesNopkgdown siteNoNEWSYes · 100% structuredCode of conductNoContributing guideNo

Examples that run: 100%
Documented parameters: not tracked
Return-value docs: not tracked
References docs: 0%

Downloads

2K

CRAN downloads in the past year

Rank #21,199 · ~6/day · ~171/mo

Releases R versions

Daily download trend is not available in this view yet.

13830 days

52390 days

2K1 year

Compare downloads with other packages →

Also on402 r2u9 autocran2.2K conda_forge

Repository

GitHub ↗ cmmr/semaphore

2Stars

0Forks

0Open issues

0Open PRs

3Releases

26Commits

1Contributors

26 commits · Last activity 2025-05-23

Stars over time

2025-02-04 · 22026-07-07 · 2

Repository practices

Upstream repositoryBeta

4 development-tooling and community-health practices detected across 4 families in the upstream repository

Checks run against github.com/cmmr/semaphore on 2026-08-09.

Continuous integration (1)

GitHub Actions

CRAN release process (1)

cran-comments.md

Lint, format, editor (1)

RStudio project

Coverage (1)

Codecov

How this is detected·Detection ruleset v1 (2026-07-18)

Dependencies

Declared dependencies

4 external dependencies (excludes base and recommended)

Depends (0)

none

Imports (1)

Rcpp

LinkingTo (2)

Rcpp BH

Suggests (1)

testthat

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

Code & Tests

People & History

People (2)

Maintainer (1)

Daniel P. Smith

Author, Maintainer

Authors (1)

Daniel P. Smith

Author, Maintainer

Copyright holders (1)

Alkek Center for Metagenomics and Microbiome Research

Copyright holder, Funder

Funders (1)

Alkek Center for Metagenomics and Microbiome Research

Copyright holder, Funder

Package Timeline

4 releases. Pick two to compare their code metrics. R releases are shown for context.

R
R 4.6.0 released · 2026-04-24
R
R 4.5.0 released · 2025-04-11
1.2.0Latest
2025-03-29 · current release · diff ↗
1.1.0
2025-03-18 · diff ↗
1.0.2
2024-11-13 · diff ↗
1.0.1
2024-11-11
R
R 4.4.0 released · 2024-04-24

Package metadata

First published: 2024-11-11
Total releases: 4 / 2 yrs
License: MIT + file LICENSE OSI
Download size: 6.4 KB
Installed size: not tracked yet
With dependencies: not tracked yet

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("semaphore")

Format

Smith, D. P., & Alkek Center for Metagenomics and Microbiome Research. (2025). semaphore: Shared Memory Atomic Operations (Version 1.2.0) [Computer software]. https://doi.org/10.32614/CRAN.package.semaphore

This is what citation() produces when a package has no citation file of its own. If it prints something else, use that.

Cite the R Observatory

For a number measured here: a download total, a coverage figure, an archival date.

Format

APA

Balamuta, J. J. (2026). R Observatory: Metrics for semaphore version 1.2.0 [Data set]. HJJB, LLC. Data release v2026-08-11. https://doi.org/10.5281/zenodo.21843040

From data release v2026-08-11, which the citation names so these numbers can be found later. More on citing and the projects behind them.

Report a problem with this page →