A Unified Semantics For Future Erlang Pdf
Highlightserts:. The Kernel application's User's Guide now contains a Logger Cookbook with common usage patterns.
Numerous improvements in the new socket and net modulesStandard libraries:. commontest: ctpropertytest logging is improved. ssl: Correct handling of unordered chains so that it works as expectedTools:. Emacs erlang-mode function that lets the user open the documentation for an Erlang/OTP function in an Emacs buffer has been improved.
Users will be asked if they want the man pages downloaded if they are not present in the system.For more details seePre-built versions for Windows can be fetched here:Online documentation can be browsed here:The source tarball can be fetched here:The documentation can be fetched here:The man pages can be fetched here:The Erlang/OTP source can also be found at GitHub on the official Erlang repository:Thank you for all your contributions! OTP 21.3Erlang/OTP 21.3 is the third service release for version 21 release with, improvements as well as a few features! HighlightsKernel:.
The standard logger handler, loggerstdh, now has a new internal feature for log rotation. For full information see the documentation.SSL:. The Reason part of the error return from the functions connect and handshake has a better and documented format. This is a potential incompatibility. OTP 21.1Erlang/OTP 21.1 is the first service release for the 21st major release with improvements as well as a few new features! Reporting a Security Issue in Erlang/OTPPlease follow this document in order to report the issues regarding security in Erlang/OTP. Please do not create a public issue for a security issue.
When should you report a security issue?The risk level is often determined by a product of the impact once exploited, and the probability of exploitation occurring. In other words, if a bug can cause great damage, but it takes highest privilege to exploit the bug, then the bug is not a high risk one.
Similarly, if the bug is easily exploitable, but its impact is limited, then it is not a high risk issue either.There is not any hard and fast rule to determine if a bug is worth reporting as a security issue to erlang-security at erlang dot org. A general rule is that an attack by someone that has no access to the Erlang application or its system can affect the confidentiality, integrity and availability.What happens after the report?All security bugs in the Erlang/OTP distribution should be reported to erlang-security at erlang dot org. Your report will be handled by a small security team at the OTP team. Your email will be acknowledged as soon as we start handling the issue.Please use a descriptive email title for your report. After the initial response to your report, the security team will keep you updated on the progress and decision being made towards a fix and release announcement.Flagging Existing Issues as Security-relatedIf you believe that an existing public issue on is security-related, we ask that you send an email to erlang-security at erlang dot org. The email title should contain the issue ID on (e.g. Flagging security issue ERL-001).
Please include a short description to motivate why it should be handled according to the security policy. Some highlights for 19.3. crypto, ssh: The implementation of the key exchange algorithms diffie-hellman-group-exchange-sha. Upc mediabox hd dvr cisco software update. are optimized, up to a factor of 11 for the slowest ( = biggest and safest) group size. dialyzer: The peak memory consumption is reduced.Analyzing modules with binary construction with huge strings is now much faster. erts: A received SIGTERM signal to beam will generate a 'stop' message to the init process and terminate the Erlang VM nicely. This is equivalent to calling init:stop/0.
kernel: The functions in the 'file' module that take a list of paths (e.g. File:pathconsult/2) will now continue to search in the path if the path contains something that is not a directory.Two OTP processes that are known to receive many messages are 'rex' (used by 'rpc') and 'errorlogger'. Those processes will now store unprocessed messages outside the process heap, this will improve their capability to handle large message queues.
publickey: New function pkixverifyhostname/2,3 Implements certificate hostname checking. See the manual and RFC 6125. publickey, ssh: The ssh host key fingerprint generation now also takes a list of algorithms and returns a list of corresponding fingerprints. See publickey:sshhostkeyfingerprint/2 and the option silentlyaccepthosts in ssh:connect. ssl: Move PEM cache to a dedicated process, to avoid making the SSL manager process a bottleneck.
This improves scalability of TLS connections. stdlib: filename:saferelativepath/1 to sanitize a relative path has been added. Thanks to more than 20 different contributorsYou can find the README and the full listing of changes for this service release atThe Erlang/OTP source can also be found at GitHub on the official Erlang repository,with tag OTP-19.3Please report any new issues via Erlang/OTPs public issue trackerWe want to thank all of those who sent us patches, suggestions and bug reports!Thank you!The Erlang/OTP Team at Ericsson. Some highlights of the release are:.
erts: Improved dirty scheduler support. A purge of a module will not have to wait for completion of all ongoing dirty NIF calls. erts: Improved accuracy of timeouts on MacOS X. kernel: Add netkernel:setopts/2 and netkernel:getopts/2 to control options for distribution sockets in runtime. asn1: Compiling multiple ASN.1 modules in the same directory with parallel make (make -j) should now be safe.
httpd: support for PUT and DELETE in modesi. 30 contributions since 19.0You can find the Release Notes with more detailed info at. Note: To unpack the TAR archive you need a GNU TAR compatible program. For installation instructions please read the README that is part of the distribution.You can also find the source code at in the official Erlang repository. Git tag OTP- 19.1The Windows binary distributions can be downloaded fromYou can also download the complete HTML documentation or the Unix manual filesYou can also read the documentation on-line here:(see the Release Notes mentioned above for release notes whichare not updated in the doc, but the new functionality is)We also want to thank those that sent us patches, suggestions and bug reports.If you find bugs in Erlang/OTP report them via the public issue tracker atThe Erlang/OTP Team at Ericsson. The following decisions regarding EEPs (Erlang Enhancement Proposals) has been taken during the spring: FunctionName and FunctionArity as macrosApprovedAlready implemented and available in OTP 19.0-rc1. Some highlights of the release are:.
New statistics info about runnable and active processes & ports.Call erlang:statistics with totalrunqueuelengths runqueuelengths totalactivetasks activetasks. Time warp improvements: dbg:p/2 and erlang:trace/3 with monotonictimestamp strictmonotonictimestamp. Introduced a validation callback for heart. The module overload in sasl has been deprecated. 90 contributions since 18.2You can find the Release Notes with more detailed info at. Note: To unpack the TAR archive you need a GNU TAR compatible program. For installation instructions please read the README that is part of the distribution.You can also find the source code at in the official Erlang repository.
Git tag OTP- 18.3The Windows binary distributions can be downloaded fromYou can also download the complete HTML documentation or the Unix manual filesYou can also read the documentation on-line here:(see the Release Notes mentioned above for release notes whichare not updated in the doc, but the new functionality is)We also want to thank those that sent us patches, suggestions and bug reports.The Erlang/OTP Team at Ericsson. Note: To unpack the TAR archive you need a GNU TAR compatible program. For installation instructions please read the README that is part of the distribution.You can also find the source code at in the official Erlang repository. Git tag OTP- 18.2The Windows binary distributions can be downloaded fromYou can also download the complete HTML documentation or the Unix manual filesYou can also read the documentation on-line here:(see the Release Notes mentioned above for release notes whichare not updated in the doc, but the new functionality is)We also want to thank those that sent us patches, suggestions and bug reports.The Erlang/OTP Team at Ericsson. Erlang/OTP 18.1 is a service release on the 18 track with mostly bug fixes, but is does contain a number of new features and characteristics improvements as well.Some highlights of the release are:.
ssl: Add possibility to downgrade an SSL/TLS connection to a tcp connection, and give back the socket control to a user process. ssh: The following new key exchange algorithms are implemented:'ecdh-sha2-nistp256', 'ecdh-sha2-nistp384', 'ecdh-sha2-nistp521','diffie-hellman-group14-sha1', 'diffie-hellman-group-exchange-sha1' and 'diffie-hellman-group-exchange-sha256'. This raises the security level considerably.
kernel,stdlib,sasl: A mechanism for limiting the amount of text that the built-in error logger events will produce has been introduced. It is useful for limiting both the size of log files and the CPU time used to produce them.This mechanism is experimental in the sense that it may be changed based on feedback. See config parameter errorloggerformatdepth in the Kernel application.You can find the Release Notes with more detailed info at. Note: To unpack the TAR archive you need a GNU TAR compatible program. For installation instructions please read the README that is part of the distribution.You can also find the source code at in the official Erlang repository. Git tag OTP- 18.1The Windows binary distributions can be downloaded fromYou can also download the complete HTML documentation or the Unix manual filesYou can also read the documentation on-line here:(see the Release Notes mentioned above for release notes whichare not updated in the doc, but the new functionality is)We also want to thank those that sent us patches, suggestions and bug reports.The Erlang/OTP Team at Ericsson. The Dublin Erlang Factory is a single day conference focused on Erlang and Elixir programming.
Erlang/OTP 18.0 is a new major release with new features, quite a few (characteristics) improvements, as well as some incompatibilities.A non functional but major change this release is the change of license to Apache License 2.0.Some highlights of the release are:. Starting from 18.0 Erlang/OTP is released under the Apache License 2.0. erts: The time functionality has been extended.
This includes a new API fortime, as well as 'time warp' modes which alters the behavior when system time changes. You are strongly encouraged to use the new API instead of the old API based on erlang:now/0. Erlang:now/0 has been deprecated since it is a scalability bottleneck.For more information see the Time and Time Correction chapter of the ERTS User's Guide. Here is a link. erts: Beside the API changes and time warp modes a lot of scalability and performance improvements regarding time management has been made.
Examples are:. scheduler specific timer wheels,. scheduler specific BIF timer management,. parallel retrieval of monotonic time and system time on OS:es that support it. erts: The previously introduced 'eager check I/O' feature is now enabled by default. erts/compiler: enhanced support for maps.
Big maps new uses a HAMT (Hash Array Mapped Trie) representation internally which makes them more efficient. There is now also support for variables as map keys. dialyzer: The -dialyzer attribute can be used for suppressing warningsin a module by specifying functions or warning options.It can also be used for requesting warnings in a module.
ssl: Remove default support for SSL-3.0 and added padding check for TLS-1.0 due to the Poodle vulnerability. ssl: Remove default support for RC4 cipher suites, as they are consider too weak. stdlib: Allow maps for supervisor flags and child specs.
stdlib: New functions in ets:. take/2. Join us in Stockholm on 11-12 June for great talks about Erlang/OTP and Elixir innovations, the latest Erlang projects from companies such as, and much more:Among the speakers are Erlang's co-inventor, functional expert, University of Kent professor, Neotoma creator, author of the Cowboy web server, - Ericsson cloud technology researcher, - Erlang lead at Machine Zone, - co-author of ‘RabbitMQ in action’, professor from University of St. Andrews, and - senior developer at Klarna.The Conference will be preceded by one day of tutorials at Ericsson on 10 June and 3 days of expert on 8-10 June. Erlang/OTP 18.0-rc1 is available for testing.This is an alpha release, which will be followed by a planned beta release in May and a final OTP 18.0 product release in June 2015.Between the alpha and beta and final release there will be new updates of the master branch with corrections and minor new features.
Hans Svensson
To encourage a welcoming, inclusive climate for communication within the erlang.org community, the Erlang/OTP team, together with members of the community, has released a new code of conduct, available at. This code of conduct lays out a guideline of how to communicate within the erlang.org community in a way we hope is easy to read, help mutual understanding and avoid flames. The erlang.org community is by definition all communication in or around erlang.org, including but not limited to the erlang.org mailing lists or Github discussions. Erlang User Conference 2015Stockholm 11-12 JuneCall For Talks ends on 17 MarchEUC 2015 will take place on 11-12 June, with one day of tutorials on 10 June and 3 days of expert training on 8-10 June:We are looking for passionate people who made an interesting innovation, open-source application or product with Erlang/OTP/Elixir. If you used Erlang or Elixir in a real-world project or you developed a cool tool, we want to hear about it! We are seeking talks aimed at beginners as much as for talks suited for more experienced users.
This is to help newer members to the Erlang community make the maximum out of the EUC as well.The deadline for talk proposals is 17 March, please submit your talk here. We are aware that parts of erlang.org need improvement. For example and are outdated. We would like to see a number of small code examples for beginners. The purpose of these examples is to provide an attractive and useful introduction for people who are interested in adopting the Erlang programming language.Please send your input to. We would like to call for help from the community since OTP team does not have too much time and it is not possible to submit pull requests for editorial of erlang.org as of now.Any other suggestions for erlang.org are always welcome.
Berlin EFL is back on 4 December, and we hope this year will be at least as fun as last year. The Call for Talks will be open until 10 October, but we tend to have more talks submitted than we have slots available, so the earlier you send yours the better your chances.Have you made an interesting innovation, open-source application or product with Erlang/OTP? Have you used Erlang in a real-world project and want to present a case study? Or maybe you developed a cool tool? Let the crowd know about it!IMPORTANT: Elixir talks also welcome this year:)Link to submission form:Link to website. The Erlang User Conference 2014 will feature over 50 talks on open-source applications, products and war stories from the Erlang world.
The keynotes will be delivered by Stuart Bailey, CTO of Infoblox and by Katie Miller, OpenShift Developer Advocate and co-founder of the Lambda Ladies. Speakers include: ‘Seven Languages in Seven Weeks’ author Bruce Tate, co-designer of Haskell and QuickCheck John Hughes, O’Reilly author Erik Stenman, m anager of the Ericsson Erlang/OTP dev team Kenneth Lundin, Rakuten lead technologist Yosuke Hara, Feuerlabs Co-founder and Developer Advocate Ulf Wiger and many more.The conference will be followed by 3-day training courses on 11-13 June: Erlang Express, OTP Express, Elixir, Cowboy Express and Test Driven Development.Early Bird rates end on 9 May. Below you can find the preliminary release dates, and code stop dates for 17.0.Note: We will not accept any NEW feature patches for inclusion in Erlang/OTP 17.0 after 2014-02-21.Preliminary dates for the upcoming release:Release: erts, emu,comp Code stop Documentation stop Release Date17.0-rc2 2014-02-2617.0 2014-03-26We will focus the time between 17.0-rc2 and 17.0 on bug fixes, improvements, and testing. Therefore you are most welcome to submit patches regarding such issues and we will try our best to include them before 17.0 is released.Especially bugs introduced in 17.0-rcX. Erlang Workshop 2014 will take place in Gothenburg, September 5.
The workshop will bring together the open source, academic, and industrial programming communities of Erlang. The workshop is open for technical (academic) papers as well as practice and applications papers describing 'real-world' uses of Erlang.The Erlang Workshop is co-located with the (International Conference on Functional Programming) ICFP and the (Commercial Users of Functional Programming) CUFP, so schedule a visit to Gothenburg and learn abouth the latest in functional programming in general and Erlang in particular! Erlang User Conference Stockholm 9-10 June: Call for Talks now openEUC2014 will take place on 9-10 June and will be followed by one day of tutorials on 11 June and 3 days of expert training on 11-13 June.The deadline for talk proposals is 10 March. If you are interested in giving a talk or tutorial, submit your talkPreliminary track titles:.Case Studies & Architecture.Meta-programming with Elixir.DevOps.Cool Tools & Gadgets.Next Generation Databases & Analytics.Scalability & Multi-core.Infrastructure & Distribution.Erlang VM. OTP R16B03-1 is a service release which corrects a few issues found in the R16B03 release. The corrections are:.The ODBC application was missing in the prebuilt Windows installers.3 corrections in the SSL application:.Add missing validation of the servernameindication option and test for its explicit use.Elliptic curve selection in server mode now properly selects a curve suggested by the client, if possible.The server did not indicate support for secure renegotiation during TLS extension handling.In the syntax tools application a bug was introduced which broke reverting of local funs. This is now corrected (thanks to Anthony Ramine).wx - Solved a problem which caused the debugger to crash when closing a window.
Fixed static linking on Mac.xmerl - Fixed a problem in the SAX-parser when the header of the next document was appearing in the buffer when using the xmerlsaxparser:stream/2 function. OTP R16B03 is a service release with mostly a number of small corrections and user contributions. But there are some new functions worth mentioning as well, here are some of them:.A new memory allocation feature called 'super carrier' has been introduced. It can for example be used for pre-allocation of all memory that the runtime system should be able to use.
It is enabled by passing the +MMscs (size in MB) command line argument. For more information see the documentation of the +MMsco, +MMscrfsd, +MMscrpm, +MMscs, +MMusac, and, +Mlpm command line arguments in the ertsalloc(3) documentation.The LDAP client (eldap application) now supports the starttls operation. This upgrades an existing tcp connection to encryption using TLS, see eldap:starttls/2 and /3.The FTP client (inets application) now supports FTP over TLS (ftps).50 open source contributions. Many thanks for that! Erlang/OTP R15B02 has been released on schedule September 5:th. It is the second R15 service release.See the release notes in theDownload the new release from theOr prebuilt packages fromHighlights:.Dialyzer: The type analysis tool Dialyzer is optimized to be generally faster.
It can now also run in parallel (default) on SMP systems and by this perform the analysis significantly faster (Thanks to Stavros Aronis and Kostis Sagonas).The SSL application now has experimental support for the TLS 1.1 and 1.2 standards as well (Thanks to Andreas Schultz).CommonTest: It is now possible to sort the generated html tables. A Netconf client (ctnetconf) which support basic netconf over ssh is added.Diameter: Statistics counters related to Diameter messages can now be retrieved by calling the diameter:serviceinfo/2 function.Various smaller optimizations in the Erlang VM.This release also contains 66 contributions from users outside the Ericsson team.
FlowForwarding.org has announced the availability of LINC, an Erlang based open source soft switch implementing the 1.2 version of the OpenFlow standard. The LINC switch has now been released as commercial friendly open source through the FlowForwarding.org community website, encouraging users and vendors to use LINC and contribute to its development. The initial LINC implementation focuses on correctness and feature compliance. Through an abstraction layer, specialized network hardware drivers can be easily interfaced to LINC. It has been implemented by using the power and flexibility of the Erlang programming language and software environment.
Erlang allows for rapid industrial strength implementations, a key requirement for developing and deploying an evolving technology such as OpenFlow. For more information, visit.
The description below is an excerpt from Erlang Solutions download page.Erlang Solutions has the facilities to port Erlang to your operating system and hardware platform of choice. We have ported Erlang to a wide range of configurations, from embedded to high specification servers. These have included HiPE enabled, 32 and 64 bit configurations, alongside the half-word emulator. We have worked with operating systems such as VxWorks, OSE Delta, QNX, Android and iOS as well as the most popular operating systems.
We are able to create and test customized binaries where your applications are packaged and tested alongside the OTP ones on the hardware / operating systems of your choice. Packages and ports that we are currently building and testing free of charge include popular Linux, Mac OS X and Windows versions.
They can be downloaded from their page. Highlights:.Line number and filename information are now included in exception backtraces. This information will be pretty-printed in the shell and used in crash reports etc.
A Unified Semantics For Future Erlang Pdf Online
In practice it will be much easier to find where something failed.The driver interface has been changed to enable 64-bit aware drivers. Most importantly the return types for ErlDrvEntry callbacks 'call' and 'control' has been changed which require drivers to be changed.New in this release is the support for 64 bit Windows. The self extracting installer can be found.CommonTest hooks are now in a final supported version.There is a new GUI tool in the observer application which integrates pman, etop, appmon and tv into one tool. The tool does also contain functions for activating tracing in an easy way.The Erlang distribution can now be run over the new SSL implementation. We have recently pushed a new master to tagged OTPR15A.This is a stabilized snapshot of the current R15 development (to be released as R15B on December 14:th) which, among other things, includes:OTP-9468 'Line numbers in exceptions'OTP-9451 'Parallel make'OTP-4779 A new GUI for Observer.
Integrating pman, etop and tv intoobserver with tracing facilities.OTP-7775 A number of memory allocation optimizations have beenimplemented. Most optimizations reduce contention caused bysynchronization between threads during allocation anddeallocation of memory. Most notably:Synchronization of memory management in scheduler specificallocator instances has been rewritten to use lock-freesynchronization.Synchronization of memory management in scheduler specificpre-allocators has been rewritten to use lock-freesynchronization.The 'msegalloc' memory segment allocator now use schedulerspecific instances instead of one instance. Apart fromreducing contention this also ensures that memory allocatorsalways create memory segments on the local NUMA node on aNUMA system.OTP-9632 An ERTS internal, generic, many to one, lock-free queue forcommunication between threads has been introduced. The manyto one scenario is very common in ERTS, so it can be used ina lot of places in the future. Currently it is used byscheduling of certain jobs, and the async thread pool, butmore uses are planned for the future.Drivers using the driverasync functionality are notautomatically locked to the system anymore, and can beunloaded as any dynamically linked in driver.Scheduling of ready async jobs is now also interleaved inbetween other jobs. Previously all ready async jobs wereperformed at once.OTP-9631 The ERTS internal system block functionality has beenreplaced by new functionality for blocking the system.
Theold system block functionality had contention issues andcomplexity issues. The new functionality piggy-backs onthread progress tracking functionality needed by newlyintroduced lock-free synchronization in the runtime system.When the functionality for blocking the system isn't used,there is more or less no overhead at all.
This since thefunctionality for tracking thread progress is there andneeded anyway. And much much more.This is not a full release of R15 but rather a pre-release. Feel free to try our R15A release and get back to us with your findings.Your feedback is important to us and highly welcomed.Regards,The OTP Team.It is with great pleasure that we announce the launch of the 2011 Erlang User Conference in Stockholm. The date for your diary is 3 November 2011.
Early Bird registration will open on 15 August so in the meantime if you wish to, we would love to hear from you.After the success of last year's Conference and it selling out, you will want to book your place early. The Erlang User Conference brings together the best minds and names in Erlang programming from language inventors, implementers and maintainers. Open source committers, community leaders and Erlang authors. Everyone who is anyone will be at the Erlang User Conference 2011!
Erlang/OTP R14B03 has been released as planned on May 25:th 2011. It is the third R14 service release.See the release notes in theDownload the new release from the.Highlights:.Diameter is a brand new application in this release.
The application support the diameter protocol specified in RFC 3588 and is intended to provide an Authentication, Authorization and Accounting (AAA) framework for applications.The documentation for stdlib and kernel now uses type specifications from the source modules which should guarantee that the documentation and code are consistent with regard to the type information. Erlang/OTP R13B04 has been released. R13B04 is a service release for R13B. There are mostly error corrections, but also some new functionality.This is the first release after the introduction of the official Git repository at and it is amazing to notice that the number of contributions from the community has increased significantly.
As many as 32 contributors have provided 1 or more patches each until now, resulting in 51 integrated patches from the open source community in this service release.In addition to the contributions provided by the community we have the following examples of highlights in the release:.The documentation can now be built from the source.The Native Implemented Functions (NIFs) are still in beta, but much enhanced.The garbage collection of binaries is further enhanced.Support for user defined prompt in the shell. A small but useful new function.Enhanced cross compilation supportDownload the new release from the. Erlang/OTP R13B03 has been released.
R13B03 is a service release for R13B. There are mostly error corrections, but also some new functionality. Some highlights in the R13B03 release are:.still experimental but very useful. Feedback is welcome.Beginning with this release we will maintain (and update on a daily basis) a GIT repository. The intention is that this will make it easier for users to contribute with bugfixes and new functionality and also easier for us to receive the contributions.The documentation is built in a new way using xsltproc and Apache FOP. The layout is changed both in HTML and PDF versions.
This is the first step, more changes and improvements will come in the following releases.A completely new erlang.org web site (this one) is also on its way but slightly delayed. Will be launched really soon now.Download the new release from the.
Contents.AvailabilityCloud Haskell is available from Hackage as. You will probably also want to install a backend:. The backend is designed to get you started and experiment with Cloud Haskell on your local machine or local network. The backend makes it possible to run Cloud Haskell applications on Microsoft Azure virtual machines.The cutting edge development version of Cloud Haskell is on and various resources are available via the.There is also the older prototype implementation (also available from ).Videos and Blog PostsCloud Haskell intros. blog:. video: (1hr): a general introduction and tutorial, focusing on what it does and how to use it.
It also covers some details about the current implementation. video: (1hr): an older but more detailed introduction by Simon Peyton Jones about the problem area and the design decisions and internals of Cloud Haskell. In particular it covers the details of how sending functions over the wire really works. video: ( 25min) A more technical overview of the new implementation (the are available too).
video: ( 1hr) An introductory talk from the NY Haskell Users Group. ( and ). video: ( 25min) Finlay Thompson's talk at Compose:: Conference in Melbourne, 2016.Well-Typed have a series of blog posts 'Communication Patterns in Cloud Haskell'.Alen Ribic has a series of blog posts about (Cloud) Haskell on the Raspberry Pi.Other blog posts.
by Mal C贸digoPapers., Jeff Epstein, Andrew Black, and and Simon Peyton Jones. Haskell Symposium, Tokyo, Sept 2011., Jeff Epstein.
Masters Thesis, University of Cambridge, 2011Documentation and SupportFor an overview of Cloud Haskell it's probably a good idea to read Towards Haskell in the Cloud (see just above).