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Common library for all Osmocom projects (libosmocore, libosmogsm, libosmovty, libosmogb, libosmosim, libosmousb, ...) https://osmocom.org/projects/libosmocore
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Harald Welte b72867f0e6 logging: Change stderr + file target to use non-blocking write 
So far, we used blocking, buffered fwrite() to write to stderr
and file targets.  This causes problems if there are [slow] consumers
causing delays, such as gnome-terminal (when the program is started
interactively) or systemd/journald (where we observe 64..128ms blocks on
stderr).

This patch introduces stderr/file based logging via write_queue
and osmo_select_main(), i.e. switch from glibc-buffered, blocking
to internally buffered, non-blocking writes.

* when osmo_stderr_target is created via application.c, we create it
  in blocking stream mode for backwards compatibility, particularly
  for [smaller] programs that don't use osmo_select_main()

* when the VTY code encounters 'log stderr' or 'log file FILENAME',
  we switch that respective target to non-blocking write-queue mode,
  as this means the application is in fact using osmo_select_main()

* The config file can now state 'log stderr blocking-io' or
  'log file FILENAME blocking-io' to explicitly enforce using blocking
  stream based I/O

* The application can at any time use API functions to switch either way

Closes: OS#4311
Change-Id: Ia58fd78535c41b3da3aeb7733aadc785ace610da
 		2021-10-26 17:16:47 +02:00
contrib attempt to fix RPM spec file after recent soversion bump 2021-02-24 08:28:30 +00:00
debian utils: osmo-aka-verify to verify UMTS AKA (SIM side) 2021-03-20 11:00:27 +00:00
doc merge_doc.xsl: move to osmo-gsm-manuals.git 2018-11-12 14:07:05 +01:00
include logging: Change stderr + file target to use non-blocking write 2021-10-26 17:16:47 +02:00
m4 Add code coverage support 2019-11-30 02:17:23 +00:00
src logging: Change stderr + file target to use non-blocking write 2021-10-26 17:16:47 +02:00
tapset support for stats static userspace probes via systemtap 2021-02-22 09:58:00 +01:00
tests logging: Change stderr + file target to use non-blocking write 2021-10-26 17:16:47 +02:00
utils revisit some calls of strtol(), stroul(), strtoull() 2021-10-04 11:24:59 +00:00
.gitignore gitignore: Ignore *~ 2021-01-05 18:39:37 +01:00
.gitreview add .gitreview 2016-05-19 06:39:13 +00:00
.mailmap Add .mailmap file for mapping mail addresses in shortlog 2016-08-08 13:12:17 +02:00
COPYING add GPL to project source 2010-02-21 09:21:30 +01:00
Doxyfile.codec.in Set HTML_TIMESTAMP to NO to make build reproducible 2019-07-17 11:03:44 +00:00
Doxyfile.coding.in doxygen: enable cross referencing everywhere 2019-02-04 16:43:57 +00:00
Doxyfile.core.in Set HTML_TIMESTAMP to NO to make build reproducible 2019-07-17 11:03:44 +00:00
Doxyfile.ctrl.in doxygen: enable cross referencing everywhere 2019-02-04 16:43:57 +00:00
Doxyfile.gb.in doxygen: enable cross referencing everywhere 2019-02-04 16:43:57 +00:00
Doxyfile.gsm.in Set HTML_TIMESTAMP to NO to make build reproducible 2019-07-17 11:03:44 +00:00
Doxyfile.vty.in Set HTML_TIMESTAMP to NO to make build reproducible 2019-07-17 11:03:44 +00:00
Makefile.am initial support for static userspace probes via systemtap 2021-02-03 13:55:40 +00:00
README.md README.md: Use https everywhere 2021-02-11 11:57:13 +01:00
TODO-RELEASE refactor stat_item: report only changed values 2021-09-30 18:33:43 +00:00
configure.ac Introduce osmo_gettid() API 2021-02-17 18:24:17 +01:00
git-version-gen add git-version-gen magic to automatically generate package version 2010-03-23 00:30:19 +08:00
libosmocodec.pc.in pkgconfig/osmocodec/osmocoding: link to talloc 2020-07-20 23:52:31 +02:00
libosmocoding.pc.in pkgconfig/osmocodec/osmocoding: link to talloc 2020-07-20 23:52:31 +02:00
libosmocore.pc.in libosmocore.pc.in: Append -lsctp to Libs.private 2019-10-22 16:09:05 +02:00
libosmoctrl.pc.in remove our internal copy of talloc, use system libtalloc 2015-12-05 23:38:18 +01:00
libosmogb.pc.in Revert "pkgconfig: link to mnl if available" 2021-01-08 10:14:02 +00:00
libosmogsm.pc.in remove our internal copy of talloc, use system libtalloc 2015-12-05 23:38:18 +01:00
libosmosim.pc.in remove our internal copy of talloc, use system libtalloc 2015-12-05 23:38:18 +01:00
libosmousb.pc.in libosmocore libusb integration 2019-12-16 00:17:27 +01:00
libosmovty.pc.in remove our internal copy of talloc, use system libtalloc 2015-12-05 23:38:18 +01:00
osmo-release.mk Fixup severe build performance issues 2017-10-04 16:26:37 +02:00
osmo-release.sh Skip RPM checks if no *.spec.in available 2021-03-26 13:50:45 +01:00

README.md

libosmocore - set of Osmocom core libraries

This repository contains a set of C-language libraries that form the core infrastructure of many Osmocom Open Source Mobile Communications projects.

Historically, a lot of this code was developed as part of the OpenBSC project, but which are of a more generic nature and thus useful to (at least) other programs that we develop in the sphere of Free Software / Open Source mobile communications.

There is no clear scope of it. We simply move all shared code between the various Osmocom projects in this library to avoid code duplication.

The libosmocore.git repository build multiple libraries:

  • libosmocore contains some general-purpose functions like select-loop abstraction, message buffers, timers, linked lists
  • libosmovty contains routines related to the interactive command-line interface called VTY
  • libosmogsm contains definitions and helper code related to GSM protocols
  • libosmoctrl contains a shared implementation of the Osmocom control interface
  • libosmogb contains an implementation of the Gb interface with its NS/BSSGP protocols
  • libosmocodec contains an implementation of GSM voice codecs
  • libosmocoding contains an implementation of GSM channel coding
  • libosmosim contains infrastructure to interface SIM/UICC/USIM cards

Homepage

The official homepage of the project is https://osmocom.org/projects/libosmocore/wiki/Libosmocore

GIT Repository

You can clone from the official libosmocore.git repository using

git clone git://git.osmocom.org/libosmocore.git

There is a cgit interface at https://git.osmocom.org/libosmocore/

Documentation

Doxygen-generated API documentation is generated during the build process, but also available online for each of the sub-libraries at https://ftp.osmocom.org/api/latest/libosmocore/

Mailing List

Discussions related to libosmocore are happening on the openbsc@lists.osmocom.org mailing list, please see https://lists.osmocom.org/mailman/listinfo/openbsc for subscription options and the list archive.

Please observe the Osmocom Mailing List Rules when posting.

Contributing

Our coding standards are described at https://osmocom.org/projects/cellular-infrastructure/wiki/Coding_standards

We us a gerrit based patch submission/review process for managing contributions. Please see https://osmocom.org/projects/cellular-infrastructure/wiki/Gerrit for more details

The current patch queue for libosmocore can be seen at https://gerrit.osmocom.org/#/q/project:libosmocore+status:open