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2017-06-09Merge pull request #1400 from tburghart/trb/erts/enif_whereisRickard Green
Add enif_whereis_pid() and enif_whereis_port() functions OTP-14453
2017-06-08Merge branch 'maint'Rickard Green
* maint: Updated OTP version Update release notes Update version numbers erts: Fix so that 81b628 (sigterm=kill) works Updated OTP version Prepare release Unconditionally clear IO buffers on send/shutdown errors Conflicts: OTP_VERSION erts/emulator/sys/unix/sys.c erts/vsn.mk
2017-06-08Merge branch 'maint-19' into maintRickard Green
* maint-19: Updated OTP version Update release notes Update version numbers erts: Fix so that 81b628 (sigterm=kill) works Updated OTP version Prepare release Update testcase to check that purge handle hibernated process correct Do not GC hibernated process from other processes Fix check_process_code() on hibernated process Unconditionally clear IO buffers on send/shutdown errors
2017-06-08Merge tag 'OTP-19.1.6.1' into maint-19Rickard Green
=== OTP-19.1.6.1 === Changed Applications: - erts-8.1.1.1 Unchanged Applications: - asn1-4.0.4 - common_test-1.12.3 - compiler-7.0.2 - cosEvent-2.2.1 - cosEventDomain-1.2.1 - cosFileTransfer-1.2.1 - cosNotification-1.2.2 - cosProperty-1.2.1 - cosTime-1.2.2 - cosTransactions-1.3.2 - crypto-3.7.1 - debugger-4.2.1 - dialyzer-3.0.2 - diameter-1.12.1 - edoc-0.8 - eldap-1.2.2 - erl_docgen-0.6 - erl_interface-3.9.1 - et-1.6 - eunit-2.3.1 - gs-1.6.2 - hipe-3.15.2 - ic-4.4.2 - inets-6.3.3 - jinterface-1.7.1 - kernel-5.1 - megaco-3.18.1 - mnesia-4.14.1 - observer-2.2.2 - odbc-2.11.3 - orber-3.8.2 - os_mon-2.4.1 - otp_mibs-1.1.1 - parsetools-2.1.3 - percept-0.9 - public_key-1.2 - reltool-0.7.2 - runtime_tools-1.10.1 - sasl-3.0.1 - snmp-5.2.4 - ssh-4.3.6 - ssl-8.0.3 - stdlib-3.1 - syntax_tools-2.1 - tools-2.8.6 - typer-0.9.11 - wx-1.7.1 - xmerl-1.3.12 * tag 'OTP-19.1.6.1': Updated OTP version Prepare release Conflicts: OTP_VERSION erts/vsn.mk otp_versions.table
2017-06-07Update release notesErlang/OTP
2017-06-05Merge branch 'maint'Lars Thorsen
Conflicts: OTP_VERSION erts/vsn.mk
2017-06-05Merge branch 'maint-19' into maintLars Thorsen
2017-06-02Merge pull request #1471 from gomoripeti/fix_erl_tracer_exampleLukas Larsson
Update erl_msg_tracer example
2017-06-02Prepare releaseRickard Green
2017-06-02Update release notesErlang/OTP
2017-05-31Revert "Prepare release"Hans Nilsson
This reverts commit eaf8ca41dfa4850437ad270d3897399c9358ced0.
2017-05-30Prepare releaseErlang/OTP
2017-05-24erts: Clarify ERL_CRASH_DUMP_SECONDS docsSverker Eriksson
especially default behavior without -heart, which is wait indefinitely for crash dump.
2017-05-23Merge branch 'lukas/doc/extend-secure-distr-warn/OTP-14425'Lukas Larsson
* lukas/doc/extend-secure-distr-warn/OTP-14425: otp: Extend secure distribution docs warnings
2017-05-23otp: Extend secure distribution docs warningsLukas Larsson
Warnings have been added to the relevant documentation about not using un-secure distributed nodes in exposed environments.
2017-05-22Add enif_whereis_...() functionsTed Burghart
#### Why do we need this new feature? There are cases when a NIF needs to send a message, using `enif_send()`, to a long-lived process with a registered name. A common use-case is logging, where asynchronous fire-and-forget messages are the norm. There can also be cases where a yielding or dirty NIF or background thread may request a callback from a service with additional information it needs to complete its operation, yielding or waiting (with suitable timeouts, etc) until its state has been updated through the NIF module's API. NIFs can only send messages to pids, and the lack of name resolution leaves a complicated dance between separate monitoring processes and the NIF as the only way to keep a NIF informed of the whereabouts of such long-lived processes. Providing a reliable, built-in facility for NIFs to resolve process (or port) names simplifies these use cases considerably. #### Risks or uncertain artifacts? Testing has not exposed any significant risk. The implementation behaves as expected on regular and dirty scheduler threads as well as non-scheduler threads. By constraining the `enif_whereis_...()` functions to their minimal scopes and using patterns consistent with related functions, the implementation, testing, and maintenance burden is low. The API and behavior of existing functions is unchanged. #### How did you solve it? While extending `enif_send()` to operate on a pid or an atom (as `erlang:send/2` does) was attractive, it would have entailed changing the type of its `to_pid` parameter and thereby breaking backward compatibility. The same consideration applies to `enif_port_command()`. That leaves a choice between 1, 2, or 3 new functions: 1. `enif_whereis()` 2. `enif_whereis_pid()` and `enif_whereis_port()` 3. All of the above. While option (1), directly mimicking the behavior of `erlang:whereis/1`, is appealing, it poses potential problems if `pid()` or `port()` are subsequently implemented as non-integral types that must be bound to an owning `ErlNifEnv` instance. Therefore, option (2) has been chosen to use `ErlNifPid`/`ErlNifPort` structures in the API to maintain proper term ownership semantics.
2017-05-21Update erl_msg_tracer examplePéter Gömöri
After "Move tracer SecondTraceTerm to Opts map" in commit 115f0ba7 getting the receipient has to be done on a bit different way.
2017-05-19Merge branch 'sverker/nif-docs'Sverker Eriksson
* sverker/nif-docs: erts: Improve erl_nif docs
2017-05-19Merge branch 'rickard/ds-runqs'Rickard Green
OTP-14152 * rickard/ds-runqs: Make statistics/1 aware of dirty run-queues and tasks
2017-05-19Make statistics/1 aware of dirty run-queues and tasksRickard Green
2017-05-17Merge pull request #1463 from bjorng/bjorn/simplify-building-lcnt/OTP-14407Björn Gustavsson
Simplify building a lock-counting emulator
2017-05-16Let --enable-lock-counter build an additional emulatorBjörn Gustavsson
"./configure --enable-lock-counter" would modify the behavior of the default emulator (usually SMP). To make lock counting more accessible, change --enable-lock-counter to build an additional emulator in the same way as: (cd erts/emulator && make lcnt) (The next commit will make it easier to start the built lock-counter emulator.)
2017-05-12Warn for potentially unsafe use of get_stacktrace/0Björn Gustavsson
erlang:get_stacktrace/0 returns the stacktrace for the latest exception. The problem is that the stacktrace is kept until the next exception occurs. If the last exception was a 'function_clause' or a 'badarg', the arguments for the call are also kept forever. The arguments can be terms of any size (potentially huge). In a future release, we would like to only allow erlang:get_stacktrace/0 from within a 'try' expression. That would make it possible to clear the stacktrace when the 'try' expression is exited. The 'catch' expression has no natural end where the stacktrace could be cleared. The stacktrace could be cleared at the end of the function that the 'catch' occurs in, but that would cause problems in the following scenario (from real life, but simplified): try ... catch _:_ -> io:format(...), io:format("~p\n", [erlang:get_stacktrace()]) end. %% In io.erl. format(Fmt, Args) -> Res = case ... of SomePattern -> catch... ...; SomeOtherPattern -> %% Output the formatted string here ... end, clear_stacktrace(), %% Inserted by compiler. Res. The call to io:format() would always clear the stacktrace before it could be retrieved. That problem could be solved by tightning the scope in which the stacktrace is kept, but the rules for how long erlang:get_stacktrace/0 would work would become complicated. Therefore, the solution we suggest for a future major release of OTP is that erlang:get_stacktrace/0 will return [] if it is called outside the 'catch' part of a 'try' expression. To help users prepare, introduce a warning when it is likely that erlang:get_stacktrace/0 will always return an empty list, for example in this code: catch error(foo), Stk = erlang:get_stacktrace() or in this code: try Expr catch _:_ -> ok end, Stk = erlang:get_stacktrace()
2017-05-10Merge branch 'maint'Rickard Green
* maint: Updated OTP version Prepare release
2017-05-10Merge branch 'maint-18' into maintRickard Green
* maint-18: Updated OTP version Prepare release Conflicts: erts/doc/src/notes.xml
2017-05-10Merge tag 'OTP-18.2.4.0.1' into maint-18Rickard Green
=== OTP-18.2.4.0.1 === Changed Applications: - erts-7.2.1.1 Unchanged Applications: - asn1-4.0.1 - common_test-1.11.2 - compiler-6.0.2 - cosEvent-2.2 - cosEventDomain-1.2 - cosFileTransfer-1.2 - cosNotification-1.2 - cosProperty-1.2 - cosTime-1.2 - cosTransactions-1.3 - crypto-3.6.2 - debugger-4.1.1 - dialyzer-2.8.2 - diameter-1.11.1 - edoc-0.7.17 - eldap-1.2 - erl_docgen-0.4.1 - erl_interface-3.8.1 - et-1.5.1 - eunit-2.2.12 - gs-1.6 - hipe-3.14 - ic-4.4 - inets-6.1.1 - jinterface-1.6.1 - kernel-4.1.1 - megaco-3.18 - mnesia-4.13.2 - observer-2.1.1 - odbc-2.11.1 - orber-3.8 - os_mon-2.4 - ose-1.1 - otp_mibs-1.1 - parsetools-2.1.1 - percept-0.8.11 - public_key-1.1 - reltool-0.7 - runtime_tools-1.9.2 - sasl-2.6.1 - snmp-5.2.1 - ssh-4.2.1 - ssl-7.2 - stdlib-2.7 - syntax_tools-1.7 - test_server-3.9.1 - tools-2.8.2 - typer-0.9.10 - webtool-0.9 - wx-1.6 - xmerl-1.3.9 * tag 'OTP-18.2.4.0.1': Updated OTP version Prepare release Conflicts: OTP_VERSION erts/vsn.mk otp_versions.table
2017-05-10Prepare releaseRickard Green
2017-05-10Merge branch 'rickard/rq-len/OTP-13201'Rickard Green
* rickard/rq-len/OTP-13201: Fix testcase Light weight statistics of run queue lengths
2017-05-10erts: Improve erl_nif docsSverker Eriksson
2017-05-05Revert "Prepare release"Raimo Niskanen
This reverts commit dc57404252c47520f352834ad9be45ad684f96c9.
2017-05-04Prepare releaseErlang/OTP
2017-05-04Update copyright yearRaimo Niskanen
2017-05-02Merge branch 'hm/escript-doc'Rickard Green
* hm/escript-doc: Improvements of escript documentation
2017-05-02Merge branch 'maint'Hans Bolinder
* maint: Updated OTP version Prepare release inets: Add missing release note dialyzer: Fix a bug regarding unknown types erl_mseg.c: don't use invalid indices in - > cache_powered_node[] Fix release note for OTP-14290 Conflicts: OTP_VERSION erts/emulator/sys/common/erl_mseg.c erts/vsn.mk lib/dialyzer/src/dialyzer_analysis_callgraph.erl
2017-04-28Prepare releaseErlang/OTP
2017-04-28Merge PR1413 from g-andrade/feature/phash2_nifSverker Eriksson
Support hashing terms from NIF code
2017-04-28Improvements of escript documentationHåkan Mattsson
2017-04-27Merge branch 'rickard/ds-stack-size'Rickard Green
OTP-14380 * rickard/ds-stack-size: Suggested stack size options for dirty schedulers
2017-04-25Fix release note for OTP-14290Rickard Green
2017-04-25Merge branch 'lukas/erts/list_to_port/OTP-14348'Lukas Larsson
* lukas/erts/list_to_port/OTP-14348: erts: Add erlang:list_to_port/1 debug bif erts: Auto-import port_to_list for consistency erts: Polish off erlang:list_to_ref/1
2017-04-25erts: Add erlang:list_to_port/1 debug bifLukas Larsson
2017-04-25Merge branch 'lukas/erts/deprecate-non-smp/OTP-14272'Lukas Larsson
* lukas/erts/deprecate-non-smp/OTP-14272: erts: Fix testcases for smp +S 1:1 erts: Deprecate the non-smp emulators
2017-04-24erts: Discontinue salted use of enif_hash/phash2Guilherme Andrade
2017-04-24Merge branch 'maint'Rickard Green
* maint: Updated OTP version Prepare release Do not ignore SIGTERM when VM has been started with +Bi Conflicts: OTP_VERSION erts/emulator/sys/unix/sys.c erts/vsn.mk
2017-04-22erts: Allow for easier future enif_hash expansionGuilherme Andrade
Allow for expanding support to 64-bit hashes without breaking the interface.
2017-04-22erts: Improve enif_hash documentationGuilherme Andrade
2017-04-22erts: Support custom salt in enif_hashGuilherme Andrade
2017-04-21Prepare releaseErlang/OTP
2017-04-21erts: Polish off erlang:list_to_ref/1Lukas Larsson
2017-04-21erts: Deprecate the non-smp emulatorsLukas Larsson