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2017-05-18stdlib: Limit the size of proc_lib's crash reportsHans Bolinder
The size of the message queue and the dictionary is limited in crash reports. To avoid creating the potentially huge list of messages of the message queue, messages are received (if the Kernel variable error_logger_format_depth is set). The tag 'message_queue_len' has been added to the crash report.
2017-05-18stdlib: Limit the size of gen_server's error eventsHans Bolinder
The state of the gen_server is limited in error events before exiting (if the Kernel variable error_logger_format_depth is set). An alternative is to let the error_logger limit all messages (error_msg, format, warning_msg, info_msg), which would not limit reports and also add a smallish overhead to event logging. It is not decided if the alternative is to be implemented.
2017-05-18kernel: Add error_logger:limit_term/1Hans Bolinder
Calling error_logger:limit_term/1 before sending terms as events to the error_logger can be used for limiting the size of the messages. Doing so will not change the output, but potentially save memory. The Kernel variable error_logger_format_depth is used when limiting the size of terms.
2017-05-18stdlib: Add io_lib:limit_term/2Hans Bolinder
The term returned by io_lib:limit_term(Term, Depth) should return the same string if substituted for Term in io_lib:format("~P", [Term, Depth]) or io_lib:format("~W", [Term, Depth]).
2017-05-18Merge pull request #1464 from bjorng/bjorn/bit-syntax-doc/ERL-387Björn Gustavsson
Improve bit syntax example page
2017-05-18Merge pull request #1466 from bjorng/bjorn/stdlib/safer-get_stacktraceBjörn Gustavsson
Call get_stacktrace/0 in a safer way
2017-05-18Merge pull request #1446 from hairyhum/crypto-duplicate-aes_gcmHans Nilsson
Remove duplicate aes_gcm from a list of ciphers
2017-05-17Merge branch 'ferd/kernel/shell-history-storage/OTP-14409'Dan Gudmundsson
* ferd/kernel/shell-history-storage/OTP-14409: Add persistence to history of the non-legacy shell add option 'quiet' to disk_log Fix type declaration for disk_log.hrl
2017-05-17Merge branch 'hans/ssh/cuddle_tests'Hans Nilsson
2017-05-17Merge branch 'hans/ssh/ext-info_bug_fixes'Hans Nilsson
2017-05-17Merge branch 'hans/ssh/test_rsa_sha2_/OTP-14362'Hans Nilsson
2017-05-17ssh: update testcase in ssh_to_opensshHans Nilsson
2017-05-17ssh: test case didn't set preferred_algorithmsHans Nilsson
2017-05-17ssh: update property test for sign-algorithmHans Nilsson
2017-05-17ssh: fix end_per_suite in property testcaseHans Nilsson
2017-05-17ssh: disable rsa-sha2-* for clientsHans Nilsson
because there is a bug in the client verification code for those algorithms
2017-05-17ssh: select server-sig-algs from configured algos (preferred_algorithms)Hans Nilsson
2017-05-17ssh: Use 'server-sig-algs' for client's selection of algsHans Nilsson
2017-05-17ssh: fix broken preferred_algorithms and pref_public_key_algs optionsHans Nilsson
2017-05-17ssh: make ssh_algorithms_SUITE test public user and host keysHans Nilsson
Conflicts: lib/ssh/src/ssh_transport.erl
2017-05-17ssh: Enable rsa-sha2-*Hans Nilsson
Conflicts: lib/ssh/src/ssh_transport.erl
2017-05-17Merge branch 'dgud/observer/chunk-proc-info'Dan Gudmundsson
* dgud/observer/chunk-proc-info: observer: Fix alpabetic ordering when sorting on Name observer: Handle crash when node goes down observer: listen on correct notebook change observer: chunk process list info
2017-05-17Merge branch 'dgud/wx/fix-msvc-2015'Dan Gudmundsson
* dgud/wx/fix-msvc-2015: wx: Fix builds on VS-2017
2017-05-17Add persistence to history of the non-legacy shellFred Hebert
This patch adds a mechanism by which shell history gets stored persistently on disk and gets loaded whenever a new shell session begins. The log files are added to the user's cache directory, with multiple files in it, although the location is configurable. All Erlang instances on a given host will share the same log file. There are two hook points in group.erl that are used: when instantiating the buffer, where we fetch from disk, and when adding a line to the buffer (gets stored). This allows all shell instances to use the same base set of lines when loaded, but to keep their history separate after the fact. As lines are added as you go, a new shell session (with ^G -> s -> c) will have access to previous sessions' lines. The implementation makes use of the disk_log library with a rotating log in order to store data, and allow automated repairs. By default, the feature is disabled and must be turned on through OTP environment variable part of the kernel application. The options include: | Option | Accepted values | Default | Description | | ------------------------ | ----------------- |---------- | -------------------- | | shell_history | enabled, disabled | disabled | turn feature on/off | | shell_history_path | any string | user cache| where to put files | | shell_history_file_bytes | 51200..N bytes | 512kb | max data size (>50kb)| | shell_history_drop | ["q().", ...] | [] | blacklisted lines | A version header is added to the disk_log configuration, allowing changes in the storage format to be enacted in the future (i.e. adding segmentation by node name in the same file, or encoding) without conflict. Log rotation is used with multiple log files to ensure proper enforcement of resizing without too much data loss. Because disk_log does not allow to just flush bits of content on rewrite (it truncates any full file), we instead use a wrap log and try to divide the configured size into up to 10 log files so that every time we rotate a log, we lose only 10% of the data. This remains true for corrupted files that cannot fully be repaired. This many-logs-based approach in turn forces the use of a minimal log size for the `shell_history_file_bytes` configuration, since it has to be divided by 10. The shell history is not loaded for the `user` process which, despite running the group.erl module, does not actually require history as it mostly just forwards IO protocol information.
2017-05-17add option 'quiet' to disk_logFred Hebert
This option allows to suppress output of info_msgs to error_logger when recoverable errors are encountered in disk_log by setting the value to 'true'. Defaults to 'false', the backwards compatible behaviour.
2017-05-17Fix type declaration for disk_log.hrlFred Hebert
A specific type was given as an atom rather than an actual type defintion.
2017-05-17proc_lib: Don't call erlang:get_stacktrace/0 twiceBjörn Gustavsson
proc_lib calls erlang:get_stacktrace/0 twice, which is unnecessary, and potentially unsafe since there are calls to many functions in between. Any of the calls could potentially cause and catch an exception, invalidating the stacktrace. Only call erlang:get_stacktrace/0 once, and pass the result to the second place where it is needed.
2017-05-17escript: Pick up stacktrace a soon as possibleBjörn Gustavsson
It happens to work today, but it is potentially unsafe to call io:format/2 before calling erlang:get_stacktrace/0. Make the code safe by calling erlang:get_stacktrace/0 directly after catching the exception.
2017-05-17Merge pull request #1465 from bjorng/bjorn/tools/fix-lcnt-docBjörn Gustavsson
Fix a few minor issues in the lcnt documentation
2017-05-17Merge pull request #1463 from bjorng/bjorn/simplify-building-lcnt/OTP-14407Björn Gustavsson
Simplify building a lock-counting emulator
2017-05-17Fix a few minor issues in the lcnt documentationBjörn Gustavsson
We generally avoid abbreviations such as "e.g." and "i.e." in the documentation. We write "Erlang", not "erlang" (except when referring to the erlang module).
2017-05-17Don't mention R12BBjörn Gustavsson
2017-05-17Add a link to the Reference Manual from the example pageBjörn Gustavsson
When doing a Google search for "bit syntax", you could end up on the programming examples page about bit syntax. The example page has some reference material, but is far from complete. Therefore, add a link to the page about bit syntax in the Reference Manual. https://bugs.erlang.org/browse/ERL-387
2017-05-16Merge branch 'ingela/dtls/opts'Ingela Anderton Andin
* ingela/dtls/opts: ssl: Adopt setopts and getopts for DTLS
2017-05-16ssl: Adopt setopts and getopts for DTLSIngela Anderton Andin
2017-05-16Merge branch 'lukas/erts/trace_recv_esdp_bug/OTP-14411'Lukas Larsson
* lukas/erts/trace_recv_esdp_bug/OTP-14411: erts: the esdp is not always available in matchspec
2017-05-16Merge pull request #1452 from niku/patch-1Ingela Andin
Revise minor notation in httpc:request/[4,5]
2017-05-16Merge branch 'ingela/remove-debug'Ingela Anderton Andin
* ingela/remove-debug: ssl: Remove debug printout
2017-05-16ssl: Remove debug printoutIngela Anderton Andin
2017-05-16Merge PR-1457 from goertzenator/enif_monitor_typesSverker Eriksson
enif_monitor_process() typo
2017-05-16Merge branch 'hans/ssh/ssh_file_user_key_checks_ec_size/OTP-14410'Hans Nilsson
2017-05-16Merge branch 'hans/ssh/test_ext_info_extension/OTP-14361'Hans Nilsson
2017-05-16Merge branch 'hans/ssh/enable_auth_methods_for_clients/OTP-14399'Hans Nilsson
2017-05-16Merge pull request #1436 from garazdawi/lukas/erts/remove_unused_functionsLukas Larsson
erts: Remove old unused functions
2017-05-16erts: Remove old unused functionsLukas Larsson
The functions have been found using: https://github.com/caolanm/callcatcher
2017-05-16Merge pull request #1435 from SalikhovDinislam/static_funcLukas Larsson
erts: Make erts_schedule_proc2port_signal static
2017-05-16lcnt_SUITE: Add a smoke test for running lock-countingBjörn Gustavsson
2017-05-16Update instructions for how to start the lock-counting VMBjörn Gustavsson
2017-05-16Teach erlexec the -emu_type optionBjörn Gustavsson
Add the option -emu_type to start an emulator of a certain type. For exampe, "-emu_type lcnt" will start beam.lcnt.smp. Any string will be accepted after -emu_type. If there is no corresponding emulator, there will be an error similar to: erlexec: The emulator '.../bin/x86_64-unknown-linux-gnu/beam.foo.smp' does not exist. On Windows, there is an undocumented option "-debug". Remove that option, because -emu_type can be used instead.
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.)