From ab8c5404d8e6468204cea83c9d20205f0ab122ed Mon Sep 17 00:00:00 2001 From: Mattias Andrée Date: Thu, 19 Oct 2017 20:37:55 +0200 Subject: Remove crap, simplify makefile, and relicense MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Mattias Andrée --- .gitignore | 17 +- COPYING | 16 - DEPENDENCIES | 19 - LICENSE | 683 +----------------------------------- Makefile | 236 ++----------- README | 1 - config.mk | 6 + dist/archlinux/stable/.gitignore | 6 - dist/archlinux/stable/PKGBUILD | 27 -- dist/archlinux/stable/slack.install | 20 -- doc/info/fdl.texinfo | 505 -------------------------- doc/info/slack.texinfo | 143 -------- doc/man/slack.1 | 82 ----- slack.1 | 70 ++++ slack.c | 119 +++++++ src/completion | 11 - src/slack.c | 136 ------- 17 files changed, 231 insertions(+), 1866 deletions(-) delete mode 100644 COPYING delete mode 100644 DEPENDENCIES create mode 100644 config.mk delete mode 100644 dist/archlinux/stable/.gitignore delete mode 100644 dist/archlinux/stable/PKGBUILD delete mode 100644 dist/archlinux/stable/slack.install delete mode 100644 doc/info/fdl.texinfo delete mode 100644 doc/info/slack.texinfo delete mode 100644 doc/man/slack.1 create mode 100644 slack.1 create mode 100644 slack.c delete mode 100644 src/completion delete mode 100644 src/slack.c diff --git a/.gitignore b/.gitignore index ea50549..69136c0 100644 --- a/.gitignore +++ b/.gitignore @@ -1,19 +1,6 @@ -_/ -/bin/ -/obj/ -.* -!.git* *~ -\#*\# -*.swo -*.swp -*.bak +*\#* *.o *.out -*.gch *.su -*.pdf -*.ps -*.dvi -*.info - +/slack diff --git a/COPYING b/COPYING deleted file mode 100644 index 6a5da49..0000000 --- a/COPYING +++ /dev/null @@ -1,16 +0,0 @@ -slack — Spawn processes with customised timer slack -Copyright © 2014, 2015 Mattias Andrée (maandree@member.fsf.org) - -This program 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. - -This program 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 this program. If not, see . - diff --git a/DEPENDENCIES b/DEPENDENCIES deleted file mode 100644 index bcd52df..0000000 --- a/DEPENDENCIES +++ /dev/null @@ -1,19 +0,0 @@ -RUNTIME DEPENDENCIES: - - linux>=2.6.28 - libc - -BUILD DEPENDENCIES: - - libc - cc - make - texinfo (opt-out, for manuals) - texlive-core (opt-in, for pdf, ps and dvi manuals) - auto-auto-complete (opt-out, for shell tab-completion) - -INSTALL DEPENDENCIES: - - make - coreutils - diff --git a/LICENSE b/LICENSE index 94a9ed0..06f2efb 100644 --- a/LICENSE +++ b/LICENSE @@ -1,674 +1,15 @@ - GNU GENERAL PUBLIC LICENSE - Version 3, 29 June 2007 +ISC License - Copyright (C) 2007 Free Software Foundation, Inc. - Everyone is permitted to copy and distribute verbatim copies - of this license document, but changing it is not allowed. +© 2014, 2015, 2017 Mattias Andrée - Preamble +Permission to use, copy, modify, and/or distribute this software for any +purpose with or without fee is hereby granted, provided that the above +copyright notice and this permission notice appear in all copies. - The GNU General Public License is a free, copyleft license for -software and other kinds of works. - - The licenses for most software and other practical works are designed -to take away your freedom to share and change the works. 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It is safest -to attach them to the start of each source file to most effectively -state the exclusion of warranty; and each file should have at least -the "copyright" line and a pointer to where the full notice is found. - - - Copyright (C) - - This program 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. - - This program 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 this program. If not, see . - -Also add information on how to contact you by electronic and paper mail. - - If the program does terminal interaction, make it output a short -notice like this when it starts in an interactive mode: - - Copyright (C) - This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. - This is free software, and you are welcome to redistribute it - under certain conditions; type `show c' for details. - -The hypothetical commands `show w' and `show c' should show the appropriate -parts of the General Public License. Of course, your program's commands -might be different; for a GUI interface, you would use an "about box". - - You should also get your employer (if you work as a programmer) or school, -if any, to sign a "copyright disclaimer" for the program, if necessary. -For more information on this, and how to apply and follow the GNU GPL, see -. - - The GNU General Public License does not permit incorporating your program -into proprietary programs. If your program is a subroutine library, you -may consider it more useful to permit linking proprietary applications with -the library. If this is what you want to do, use the GNU Lesser General -Public License instead of this License. But first, please read -. +THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES +WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF +MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR +ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES +WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN +ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF +OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. diff --git a/Makefile b/Makefile index b60ee82..42036ba 100644 --- a/Makefile +++ b/Makefile @@ -1,224 +1,32 @@ -# Copying and distribution of this file, with or without modification, -# are permitted in any medium without royalty provided the copyright -# notice and this notice are preserved. This file is offered as-is, -# without any warranty. +.POSIX: +CONFIGFILE = config.mk +include $(CONFIGFILE) -# The package path prefix, if you want to install to another root, set DESTDIR to that root. -PREFIX = /usr -# The binary path excluding prefix. -BIN = /bin -# The resource path excluding prefix. -DATA = /share -# The binary path including prefix. -BINDIR = $(PREFIX)$(BIN) -# The resource path including prefix. -DATADIR = $(PREFIX)$(DATA) -# The generic documentation path including prefix -DOCDIR = $(DATADIR)/doc -# The info manual documentation path including prefix -INFODIR = $(DATADIR)/info -# The man page documentation path including prefix -MANDIR = $(DATADIR)/man -# The man page section 1 path including prefix -MAN1DIR = $(MANDIR)/man1 -# The license base path including prefix. -LICENSEDIR = $(DATADIR)/licenses +all: slack +slack: slack.o + $(CC) -o $@ $^ $(LDFLAGS) -# The name of the package as it should be installed. -PKGNAME = slack -# The name of the command as it should be installed. -COMMAND = slack +slack.o: slack.c + $(CC) -c -o $@ $< $(CFLAGS) $(CPPFLAGS) +install: slack + mkdir -p -- "$(DESTDIR)$(PREFIX)/bin" + mkdir -p -- "$(DESTDIR)$(MANPREFIX)/man1" + mkdir -p -- "$(DESTDIR)$(PREFIX)/share/licenses/slack" + cp -- slack "$(DESTDIR)$(PREFIX)/bin/" + cp -- slack.1 "$(DESTDIR)$(MANPREFIX)/man1/" + cp -- LICENSE "$(DESTDIR)$(PREFIX)/share/licenses/slack" - -# Build rules. - -.PHONY: default -default: base info shell - -.PHONY: all -all: base doc shell - -.PHONY: base -base: command - -# Build rules for the command. - -.PHONY: command -command: bin/slack - -bin/slack: src/slack.c - mkdir -p bin - $(CC) -O3 -Wall -Wextra -pedantic -o $@ $< $(CFLAGS) $(LDFLAGS) $(CPPFLAGS) - -# Build rules for documentation. - -.PHONY: doc -doc: info pdf dvi ps - -.PHONY: info -info: bin/slack.info -bin/%.info: doc/info/%.texinfo doc/info/fdl.texinfo - @mkdir -p bin - makeinfo $< - mv $*.info $@ - -.PHONY: pdf -pdf: bin/slack.pdf -bin/%.pdf: doc/info/%.texinfo doc/info/fdl.texinfo - @mkdir -p obj/pdf bin - cd obj/pdf && texi2pdf ../../$< < /dev/null - mv obj/pdf/$*.pdf $@ - -.PHONY: dvi -dvi: bin/slack.dvi -bin/%.dvi: doc/info/%.texinfo doc/info/fdl.texinfo - @mkdir -p obj/dvi bin - cd obj/dvi && $(TEXI2DVI) ../../$< < /dev/null - mv obj/dvi/$*.dvi $@ - -.PHONY: ps -ps: bin/slack.ps -bin/%.ps: doc/info/%.texinfo doc/info/fdl.texinfo - @mkdir -p obj/ps bin - cd obj/ps && texi2pdf --ps ../../$< < /dev/null - mv obj/ps/$*.ps $@ - -# Build rules for shell auto-completion. - -.PHONY: shell -shell: bash zsh fish - -.PHONY: bash -bash: bin/slack.bash -bin/slack.bash: src/completion - @mkdir -p bin - auto-auto-complete bash --output $@ --source $< - -.PHONY: zsh -zsh: bin/slack.zsh -bin/slack.zsh: src/completion - @mkdir -p bin - auto-auto-complete zsh --output $@ --source $< - -.PHONY: fish -fish: bin/slack.fish -bin/slack.fish: src/completion - @mkdir -p bin - auto-auto-complete fish --output $@ --source $< - - -# Install rules. - -.PHONY: install -install: install-base install-info install-man install-shell - -.PHONY: install -install-all: install-base install-doc install-shell - -# Install base rules. - -.PHONY: install-base -install-base: install-command install-copyright - -.PHONY: install-command -install-command: bin/slack - install -dm755 -- "$(DESTDIR)$(BINDIR)" - install -m755 $< -- "$(DESTDIR)$(BINDIR)/$(COMMAND)" - -.PHONY: install-copyright -install-copyright: install-copying install-license - -.PHONY: install-copying -install-copying: - install -dm755 -- "$(DESTDIR)$(LICENSEDIR)/$(PKGNAME)" - install -m644 COPYING -- "$(DESTDIR)$(LICENSEDIR)/$(PKGNAME)/COPYING" - -.PHONY: install-license -install-license: - install -dm755 -- "$(DESTDIR)$(LICENSEDIR)/$(PKGNAME)" - install -m644 LICENSE -- "$(DESTDIR)$(LICENSEDIR)/$(PKGNAME)/LICENSE" - -# Install documentation. - -.PHONY: install-doc -install-doc: install-info install-pdf install-ps install-dvi install-man - -.PHONY: install-info -install-info: bin/slack.info - install -dm755 -- "$(DESTDIR)$(INFODIR)" - install -m644 $< -- "$(DESTDIR)$(INFODIR)/$(PKGNAME).info" - -.PHONY: install-pdf -install-pdf: bin/slack.pdf - install -dm755 -- "$(DESTDIR)$(DOCDIR)" - install -m644 $< -- "$(DESTDIR)$(DOCDIR)/$(PKGNAME).pdf" - -.PHONY: install-ps -install-ps: bin/slack.ps - install -dm755 -- "$(DESTDIR)$(DOCDIR)" - install -m644 $< -- "$(DESTDIR)$(DOCDIR)/$(PKGNAME).ps" - -.PHONY: install-dvi -install-dvi: bin/slack.dvi - install -dm755 -- "$(DESTDIR)$(DOCDIR)" - install -m644 $< -- "$(DESTDIR)$(DOCDIR)/$(PKGNAME).dvi" - -.PHONY: install-man -install-man: doc/man/slack.1 - install -dm755 -- "$(DESTDIR)$(MAN1DIR)" - install -m644 $< -- "$(DESTDIR)$(MAN1DIR)/$(COMMAND).1" - -# Install shell auto-completion. - -.PHONY: install-shell -install-shell: install-bash install-zsh install-fish - -.PHONY: install-bash -install-bash: bin/slack.bash - install -dm755 -- "$(DESTDIR)$(DATADIR)/bash-completion/completions" - install -m644 $< -- "$(DESTDIR)$(DATADIR)/bash-completion/completions/$(COMMAND)" - -.PHONY: install-zsh -install-zsh: bin/slack.zsh - install -dm755 -- "$(DESTDIR)$(DATADIR)/zsh/site-functions" - install -m644 $< -- "$(DESTDIR)$(DATADIR)/zsh/site-functions/_$(COMMAND)" - -.PHONY: install-fish -install-fish: bin/slack.fish - install -dm755 -- "$(DESTDIR)$(DATADIR)/fish/completions" - install -m644 $< -- "$(DESTDIR)$(DATADIR)/fish/completions/$(COMMAND).fish" - - -# Uninstall rules. - -.PHONY: uninstall uninstall: - -rm -- "$(DESTDIR)$(BINDIR)/$(COMMAND)" - -rm -- "$(DESTDIR)$(LICENSEDIR)/$(PKGNAME)/COPYING" - -rm -- "$(DESTDIR)$(LICENSEDIR)/$(PKGNAME)/LICENSE" - -rmdir -- "$(DESTDIR)$(LICENSEDIR)/$(PKGNAME)" - -rm -- "$(DESTDIR)$(INFODIR)/$(PKGNAME).info" - -rm -- "$(DESTDIR)$(DOCDIR)/$(PKGNAME).pdf" - -rm -- "$(DESTDIR)$(DOCDIR)/$(PKGNAME).ps" - -rm -- "$(DESTDIR)$(DOCDIR)/$(PKGNAME).dvi" - -rm -- "$(DESTDIR)$(MAN1DIR)/$(COMMAND).1" - -rm -- "$(DESTDIR)$(DATADIR)/fish/completions/$(COMMAND).fish" - -rmdir -- "$(DESTDIR)$(DATADIR)/fish/completions" - -rmdir -- "$(DESTDIR)$(DATADIR)/fish" - -rm -- "$(DESTDIR)$(DATADIR)/zsh/site-functions/_$(COMMAND)" - -rmdir -- "$(DESTDIR)$(DATADIR)/zsh/site-functions" - -rmdir -- "$(DESTDIR)$(DATADIR)/zsh" - -rm -- "$(DESTDIR)$(DATADIR)/bash-completion/completions/$(COMMAND)" - -rmdir -- "$(DESTDIR)$(DATADIR)/bash-completion/completions" - -rmdir -- "$(DESTDIR)$(DATADIR)/bash-completion" - + -rm -f -- "$(DESTDIR)$(PREFIX)/bin/slack" + -rm -f -- "$(DESTDIR)$(MANPREFIX)/man1/slack.1" + -rm -rf -- "$(DESTDIR)$(PREFIX)/share/licenses/slack" -# Clean rules. - -.PHONY: clean clean: - -rm -r obj bin + -rm -f -- slack *.o + +.SUFFIXES: +.PHONY: all install uninstall clean diff --git a/README b/README index f37b858..da60144 100644 --- a/README +++ b/README @@ -46,4 +46,3 @@ RATIONALE SEE ALSO nice(1) ionice(1), prctl(2) - diff --git a/config.mk b/config.mk new file mode 100644 index 0000000..9e148ca --- /dev/null +++ b/config.mk @@ -0,0 +1,6 @@ +PREFIX = /usr/local +MANPREFIX = $(PREFIX)/share/man + +CFLAGS = -std=c99 -Wall -Wextra -O2 +CPPFLAGS = -D_DEFAULT_SOURCE -D_BSD_SOURCE -D_XOPEN_SOURCE=700 +LDFLAGS = -s diff --git a/dist/archlinux/stable/.gitignore b/dist/archlinux/stable/.gitignore deleted file mode 100644 index 089a628..0000000 --- a/dist/archlinux/stable/.gitignore +++ /dev/null @@ -1,6 +0,0 @@ -* -!/.git* -*~ -!/PKGBUILD -!/slack.install - diff --git a/dist/archlinux/stable/PKGBUILD b/dist/archlinux/stable/PKGBUILD deleted file mode 100644 index 3fb3bca..0000000 --- a/dist/archlinux/stable/PKGBUILD +++ /dev/null @@ -1,27 +0,0 @@ -# Maintainer: Mattias Andrée <`base64 -d`(bWFhbmRyZWUK)@member.fsf.org> - -pkgname=slack -pkgver=2.2 -pkgrel=1 -pkgdesc="Control your timer slack" -arch=(i686 x86_64) -url="https://github.com/maandree/slack" -license=('GPL3') -depends=(glibc 'linux>=2.6.28') -makedepends=(glibc gcc make coreutils texinfo auto-auto-complete) -install=slack.install -source=($url/archive/$pkgver.tar.gz) -sha256sums=(7459a54d2a360b25da60d99fb025cf6e04e5148d937ce8e6c2b7bd69eaf5931d) - - -build() { - cd "$srcdir/$pkgname-$pkgver" - make PREFIX=/usr -} - - -package() { - cd "$srcdir/$pkgname-$pkgver" - make PREFIX=/usr install DESTDIR="$pkgdir" -} - diff --git a/dist/archlinux/stable/slack.install b/dist/archlinux/stable/slack.install deleted file mode 100644 index 5c6c500..0000000 --- a/dist/archlinux/stable/slack.install +++ /dev/null @@ -1,20 +0,0 @@ -_file="slack" - -infodir="usr/share/info" -file="${_file}.info" - - -post_install() { - [[ -x "usr/bin/install-info" ]] || return 0 - install-info -- "${infodir}/${file}" "${infodir}/dir" 2> /dev/null -} - -post_upgrade() { - post_install "$1" -} - -pre_remove() { - [[ -x "usr/bin/install-info" ]] || return 0 - install-info --delete -- "${infodir}/${file}" "${infodir}/dir" 2> /dev/null -} - diff --git a/doc/info/fdl.texinfo b/doc/info/fdl.texinfo deleted file mode 100644 index cb71f05..0000000 --- a/doc/info/fdl.texinfo +++ /dev/null @@ -1,505 +0,0 @@ -@c The GNU Free Documentation License. -@center Version 1.3, 3 November 2008 - -@c This file is intended to be included within another document, -@c hence no sectioning command or @node. - -@display -Copyright @copyright{} 2000, 2001, 2002, 2007, 2008 Free Software Foundation, Inc. -@uref{http://fsf.org/} - -Everyone is permitted to copy and distribute verbatim copies -of this license document, but changing it is not allowed. -@end display - -@enumerate 0 -@item -PREAMBLE - -The purpose of this License is to make a manual, textbook, or other -functional and useful document @dfn{free} in the sense of freedom: to -assure everyone the effective freedom to copy and redistribute it, -with or without modifying it, either commercially or noncommercially. -Secondarily, this License preserves for the author and publisher a way -to get credit for their work, while not being considered responsible -for modifications made by others. - 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Control your timer slack -@end direntry - - -@copying -Copyright @copyright{} 2014 Mattias Andrée - -@quotation -Permission is granted to copy, distribute and/or modify this document -under the terms of the GNU Free Documentation License, Version 1.3 or -any later version published by the Free Software Foundation; with no -Invariant Sections, with no Front-Cover Texts, and with no Back-Cover -Texts. A copy of the license is included in the section entitled -``GNU Free Documentation License''. -@end quotation -@end copying - -@ifnottex -@node Top -@top slack -- Control your timer slack -@insertcopying -@end ifnottex - -@titlepage -@title slack -@subtitle Control your timer slack -@author by Mattias Andrée (maandree) - -@page -@c @center `' -@vskip 0pt plus 1filll -@insertcopying -@end titlepage - -@contents - - - -@menu -* Overview:: Brief overview of @command{slack}. -* Invoking:: Invocation of @command{slack}. -* GNU Free Documentation License:: Copying and sharing this manual. -@end menu - - - -@node Overview -@chapter Overview - -Get the current timer slack value or spawn a new -process with a new timer slack value. Timer slack -is inherited to child processes. - -Timer slack allows the kernel to coalesce events so -that the kernel does not need to which context as -often. For example, if you have a lot timers -@footnote{Timer slack affects more than timers.} -but you only want 100 milliseconds accuracy (instead -of 50 microsoconds accuracy which is the default) on -your timers you can set your tiemr slack to 100 -milliseconds. If this is done the kernel can let a -timer expire up to 100 milliseconds lot so it can -expire at the same time as other timers that expire -in the near future, this way the kernel will only -have to which between kernel mode and user mode -once. This can also have nice effects in user mode, -if you have an @code{epoll} with @code{timerfd}:s, -the epoll can return once and list multiple timers -than expire within 100 milliseconds of each other. - -Note: real-time threads do not slack off. - - - -@node Invoking -@chapter Invoking - -There are four ways to run @command{slack}: - -@table @command -@item slack get -Print the current process's timer slack in -human-readable format. - -@item slack GET -Print the current process's timer slack in -machine-readable format, namely the timer -slack in nanoseconds with digits only. - -@item slack reset [--fatal] [--] -Start the specified command with default -timer slack, which is determined by the -timer slack of the proceess with PID 1. -By default this is 50 microseconds. - -If @option{--fatal} is used, the specified -command will not be executed if its timer -slack cannot be set. If @option{--fatal} -is not used, the specified command will be -executed even if its timer slack cannot be -set. - -@item slack [--fatal] [--] -Start the specified command with a selected -timer slack. The timer slack must be expressed -as a integer optionally suffixed (without -any blank space) by `n', `u' (or the micro -character), `m', optionally in turn suffixed -by `s', for nanoseconds, microseconds and -milliseconds, respectively, `s' can be used -for whole seconds. If no suffix is used, -nanoseconds are assumed. - -If @option{--fatal} is used, the specified -command will not be executed if its timer -slack cannot be set. If @option{--fatal} -is not used, the specified command will be -executed even if its timer slack cannot be -set. -@end table - - - -@node GNU Free Documentation License -@appendix GNU Free Documentation License -@include fdl.texinfo - -@bye - diff --git a/doc/man/slack.1 b/doc/man/slack.1 deleted file mode 100644 index fffe191..0000000 --- a/doc/man/slack.1 +++ /dev/null @@ -1,82 +0,0 @@ -.TH SLACK 1 SLACK -.SH NAME -slack - Spawn processes with customised timer slack -.SH SYNOPSIS -.B slack -(get | GET) -.br -.B slack -.RI ((reset\ |\ INTERVAL ) -[\-\-fatal] [--] -.IR COMMAND ...) -.SH DESCRIPTION -If the verb -.B get -or -.B GET -is used, the current timer slack value and exit. If get is used, the -program shall use as high prefix as possible. If -.V GET -is used the value shall be printed in nanoseconds but not unit shall -be printed. -.PP -If the verb reset is used, the process shall set the timer slack value -for the process to the default timer slack value, and -.BR exec (3) -to -.IR COMMAND . -.PP -If an -.I INTERVAL -is given, the process shall set the timer slack value for the process -to -.IR INTERVAL , -and -.BR exec (3) -to -.IR COMMAND . -.PP -.I INTERVAL -must be a positive number, optionally with a prefix. Recognised -prefixes (and units) are: -.TP -.BR ns ,\ n -nanoseconds (default) -.TP -.BR µs ,\ µ ,\ us \,\ u -microseconds -.TP -.BR ms ,\ m -milliseconds -.TP -.BR s -seconds -.PP -The default timer slack value is the timer slack value on PID 1. -.SH OPTIONS -.TP -.B \-\-fatal -Fail if the timer slack value cannot be set. -.SH NOTES -Real-time threads do not slack around. -.SH RATIONALE -Could be useful increase the performance of your computer. -.SH "SEE ALSO" -.BR nice (1), -.BR ionice (1), -.BR prctl (2) -.SH AUTHORS -Principal author, Mattias Andrée. See the COPYING file for the full -list of authors. -.SH LICENSE -Copyright \(co 2014, 2015 Mattias Andrée -.br -License GPLv3+: GNU GPL version 3 or later . -.br -This is free software: you are free to change and redistribute it. -.br -There is NO WARRANTY, to the extent permitted by law. -.SH BUGS -Please report bugs to https://github.com/maandree/slack/issues or to -maandree@member.fsf.org - diff --git a/slack.1 b/slack.1 new file mode 100644 index 0000000..f8a0c37 --- /dev/null +++ b/slack.1 @@ -0,0 +1,70 @@ +.TH SLACK 1 SLACK +.SH NAME +slack - Spawn processes with customised timer slack +.SH SYNOPSIS +.B slack +(get | GET) +.br +.B slack +.RI ((reset\ |\ INTERVAL ) +[\-\-fatal] [--] +.IR COMMAND ...) +.SH DESCRIPTION +If the verb +.B get +or +.B GET +is used, the current timer slack value and exit. If get is used, the +program shall use as high prefix as possible. If +.V GET +is used the value shall be printed in nanoseconds but not unit shall +be printed. +.PP +If the verb reset is used, the process shall set the timer slack value +for the process to the default timer slack value, and +.BR exec (3) +to +.IR COMMAND . +.PP +If an +.I INTERVAL +is given, the process shall set the timer slack value for the process +to +.IR INTERVAL , +and +.BR exec (3) +to +.IR COMMAND . +.PP +.I INTERVAL +must be a positive number, optionally with a prefix. Recognised +prefixes (and units) are: +.TP +.BR ns ,\ n +nanoseconds (default) +.TP +.BR µs ,\ µ ,\ us \,\ u +microseconds +.TP +.BR ms ,\ m +milliseconds +.TP +.BR s +seconds +.PP +The default timer slack value is the timer slack value on PID 1. +.SH OPTIONS +.TP +.B \-\-fatal +Fail if the timer slack value cannot be set. +.SH NOTES +Real-time threads do not slack around. +.SH RATIONALE +Could be useful increase the performance of your computer. +.SH "SEE ALSO" +.BR nice (1), +.BR ionice (1), +.BR prctl (2) +.SH AUTHORS +Mattias Andrée +.RI < maandree@kth.se > diff --git a/slack.c b/slack.c new file mode 100644 index 0000000..28b5171 --- /dev/null +++ b/slack.c @@ -0,0 +1,119 @@ +#include +#include +#include +#include +#include + + + +#define NS (1L) +#define US (1000L) +#define MS (1000L * 1000L) +#define S (1000L * 1000L * 1000L) + + +static void usage(void) +{ + printf("USAGE: slack (get | GET | ((reset | ) [--fatal] [--] ))\n"); + printf("\n"); + printf("The must be a positive number optionally with a suffix:\n"); + printf(" ns n nanoseconds (default)\n"); + printf(" µs µ us u microseconds\n"); + printf(" ms m milliseconds\n"); + printf(" s seconds\n"); + printf("\n"); + printf("If `GET' is used rather than `get', the timer slack value will be printed in\n"); + printf("nanoseconds without suffix. `GET' and `get' prints the current timer slack\n"); + printf("value and exits.\n"); + printf("\n"); + printf("`reset` reset the timer slack value to the default (the time slack value for\n"); + printf("the init process (PID 1) has.)\n"); + printf("\n"); + printf("Unless `--fatal` is used, the program will run even if the timer\n"); + printf("slack could not be set.\n"); + printf("\n"); +} + + +int main(int argc, char** argv) +{ + long slackvalue, r; + int i, j, fatal = 0; + char** exec_argv; + + if ((argc < 2) || !strcmp(argv[1], "--help") || !strcmp(argv[1], "help")) + return usage(), argc < 2 ? 1 : 0; + + if (!strcmp(argv[1], "get") || !strcmp(argv[1], "GET")) + { + const char* suffix; + if (r = prctl(PR_GET_TIMERSLACK), r < 0) + perror(*argv); + else + { + if (!strcmp(argv[1], "GET")) + suffix = ""; + else if (r % S == 0) suffix = "s", r /= S; + else if (r % MS == 0) suffix = "ms", r /= MS; + else if (r % US == 0) suffix = "µs", r /= US; + else suffix = "ns"; + printf("%li%s\n", r, suffix); + } + return r > 0 ? 0 : 1; + } + + for (i = 2; i < argc; i++) + if (!strcmp(argv[i], "--fatal")) + fatal = 1; + else if (!strcmp(argv[i], "--")) + { + i++; + break; + } + else if (strstr(argv[i], "-") == argv[i]) + return usage(), 1; + else + break; + + if (i == argc) + return usage(), 1; + + exec_argv = malloc((argc - i + 1) * sizeof(char*)); + if (exec_argv == NULL) + return perror(*argv), 2; + exec_argv[argc - i] = NULL; + for (j = 0; i < argc; j++, i++) + exec_argv[j] = argv[i]; + + if (!strcmp(argv[1], "reset")) + slackvalue = 0; + else + { + char* end; + + slackvalue = strtol(argv[1], &end, 10); + if (end == argv[1]) + return fprintf(stderr, "No slack value specified."), free(exec_argv), 1; + + if (!strcmp(end, "n") || !strcmp(end, "ns") || !strcmp(end, "")) slackvalue *= NS; + else if (!strcmp(end, "µ") || !strcmp(end, "µs")) slackvalue *= US; + else if (!strcmp(end, "u") || !strcmp(end, "us")) slackvalue *= US; + else if (!strcmp(end, "m") || !strcmp(end, "ms")) slackvalue *= MS; + else if (!strcmp(end, "s")) slackvalue *= S; + else + return fprintf(stderr, "Unrecognised suffix for slack value."), free(exec_argv), 1; + + if (slackvalue <= 0) + return fprintf(stderr, "Invalid slack value: %lins", slackvalue), free(exec_argv), 1; + } + + if (r = prctl(PR_SET_TIMERSLACK, slackvalue), r < 0) + if (perror(*argv), fatal) + return free(exec_argv), 2; + + execvp(*exec_argv, exec_argv); + perror(*argv); + free(exec_argv); + return 2; +} + diff --git a/src/completion b/src/completion deleted file mode 100644 index 45637e5..0000000 --- a/src/completion +++ /dev/null @@ -1,11 +0,0 @@ -(slack - (default (arg VERB_INTERVAL_OR_COMMAND) (files -r) (suggest cmd) - (desc 'Specify which command to run')) - - (unargumented (options --fatal) - (complete --fatal) - (desc 'Fail if the timer slack cannot be set')) - - (suggestion cmd (verbatim get GET reset INTERVAL COMMAND)) -) - diff --git a/src/slack.c b/src/slack.c deleted file mode 100644 index 1895e50..0000000 --- a/src/slack.c +++ /dev/null @@ -1,136 +0,0 @@ -/** - * slack — Spawn processes with customised timer slack - * Copyright © 2014 Mattias Andrée (maandree@member.fsf.org) - * - * This program 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. - * - * This program 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 this program. If not, see . - */ -#include -#include -#include -#include -#include - - - -#define NS (1L) -#define US (1000L) -#define MS (1000L * 1000L) -#define S (1000L * 1000L * 1000L) - - -static void usage(void) -{ - printf("USAGE: slack (get | GET | ((reset | ) [--fatal] [--] ))\n"); - printf("\n"); - printf("The must be a positive number optionally with a suffix:\n"); - printf(" ns n nanoseconds (default)\n"); - printf(" µs µ us u microseconds\n"); - printf(" ms m milliseconds\n"); - printf(" s seconds\n"); - printf("\n"); - printf("If `GET' is used rather than `get', the timer slack value will be printed in\n"); - printf("nanoseconds without suffix. `GET' and `get' prints the current timer slack\n"); - printf("value and exits.\n"); - printf("\n"); - printf("`reset` reset the timer slack value to the default (the time slack value for\n"); - printf("the init process (PID 1) has.)\n"); - printf("\n"); - printf("Unless `--fatal` is used, the program will run even if the timer\n"); - printf("slack could not be set.\n"); - printf("\n"); -} - - -int main(int argc, char** argv) -{ - long slackvalue, r; - int i, j, fatal = 0; - char** exec_argv; - - if ((argc < 2) || !strcmp(argv[1], "--help") || !strcmp(argv[1], "help")) - return usage(), argc < 2 ? 1 : 0; - - if (!strcmp(argv[1], "get") || !strcmp(argv[1], "GET")) - { - const char* suffix; - if (r = prctl(PR_GET_TIMERSLACK), r < 0) - perror(*argv); - else - { - if (!strcmp(argv[1], "GET")) - suffix = ""; - else if (r % S == 0) suffix = "s", r /= S; - else if (r % MS == 0) suffix = "ms", r /= MS; - else if (r % US == 0) suffix = "µs", r /= US; - else suffix = "ns"; - printf("%li%s\n", r, suffix); - } - return r > 0 ? 0 : 1; - } - - for (i = 2; i < argc; i++) - if (!strcmp(argv[i], "--fatal")) - fatal = 1; - else if (!strcmp(argv[i], "--")) - { - i++; - break; - } - else if (strstr(argv[i], "-") == argv[i]) - return usage(), 1; - else - break; - - if (i == argc) - return usage(), 1; - - exec_argv = malloc((argc - i + 1) * sizeof(char*)); - if (exec_argv == NULL) - return perror(*argv), 2; - exec_argv[argc - i] = NULL; - for (j = 0; i < argc; j++, i++) - exec_argv[j] = argv[i]; - - if (!strcmp(argv[1], "reset")) - slackvalue = 0; - else - { - char* end; - - slackvalue = strtol(argv[1], &end, 10); - if (end == argv[1]) - return fprintf(stderr, "No slack value specified."), free(exec_argv), 1; - - if (!strcmp(end, "n") || !strcmp(end, "ns") || !strcmp(end, "")) slackvalue *= NS; - else if (!strcmp(end, "µ") || !strcmp(end, "µs")) slackvalue *= US; - else if (!strcmp(end, "u") || !strcmp(end, "us")) slackvalue *= US; - else if (!strcmp(end, "m") || !strcmp(end, "ms")) slackvalue *= MS; - else if (!strcmp(end, "s")) slackvalue *= S; - else - return fprintf(stderr, "Unrecognised suffix for slack value."), free(exec_argv), 1; - - if (slackvalue <= 0) - return fprintf(stderr, "Invalid slack value: %lins", slackvalue), free(exec_argv), 1; - } - - if (r = prctl(PR_SET_TIMERSLACK, slackvalue), r < 0) - if (perror(*argv), fatal) - return free(exec_argv), 2; - - execvp(*exec_argv, exec_argv); - perror(*argv); - free(exec_argv); - return 2; -} - -- cgit v1.2.3-70-g09d2