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2017-08-23Merge branch 'rickard/unicode-display_string/OTP-14545' into maintRickard Green
* rickard/unicode-display_string/OTP-14545: Unicode support for erlang:display_string/1
2017-08-23Unicode support for erlang:display_string/1Rickard Green
2017-08-23Merge branch 'sverker/halt-unicode-slogan/OTP-14553' into maintSverker Eriksson
* sverker/halt-unicode-slogan/OTP-14553: erts: Allow any unicode string as crash dump slogan erts: Generate crash_dump slogan string as UTF8 erts: Refactor erts_unicode_list_to_buf
2017-08-23erts: Allow any unicode string as crash dump sloganSverker Eriksson
i.e the first argument to erlang:halt
2017-07-06erts: Generate crash_dump slogan string as UTF8Sverker Eriksson
the same as atoms.
2017-07-06Merge branch 'john/erts/runtime-lcnt' into maintJohn Högberg
* john/erts/runtime-lcnt: Document rt_mask and add warnings about copy_save Add an emulator test suite for lock counting Break erts_debug:lock_counters/1 into separate BIFs Allow toggling lock counting at runtime Move lock flags to a common header Enable register_SUITE for lcnt builds Enable lcnt smoke test on all builds that have lcnt enabled Make lock counter info independent of the locks being counted OTP-14412 OTP-13170 OTP-14413
2017-07-06Allow toggling lock counting at runtimeJohn Högberg
The implementation is still hidden behind ERTS_ENABLE_LOCK_COUNT, and all categories are still enabled by default, but the actual counting can be toggled at will. OTP-13170
2017-07-06erts: Refactor erts_unicode_list_to_bufSverker Eriksson
to get bytes written when truncated.
2017-05-21erts: Make bif's do_send() staticSalikhov Dinislam
2017-05-04Update copyright yearRaimo Niskanen
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
2017-04-24Handle chardata in string:to_float and string:to_listDan Gudmundsson
2017-04-11Fix multi-scheduling with only one normal schedulerRickard Green
2017-03-22list_to_ref/1Rickard Green
2017-02-20Merge branch 'master' into sverker/enif_selectSverker Eriksson
Conflicts: erts/emulator/beam/erl_binary.h erts/emulator/beam/erl_monitors.c erts/emulator/beam/erl_nif.c erts/emulator/beam/global.h erts/emulator/test/nif_SUITE_data/nif_SUITE.c
2017-02-14Fixed typos in ertsAndrew Dryga
2017-02-09erts: Add enif_monitor_process and enif_demonitor_processSverker Eriksson
2017-02-06Use magic refs for distributed send trap contextRickard Green
2017-02-06Implement magic referencesRickard Green
Magic references are *intentionally* indistinguishable from ordinary references for the Erlang software. Magic references do not change the language, and are intended as a pure runtime internal optimization. An ordinary reference is typically used as a key in some table. A magic reference has a direct pointer to a reference counted magic binary. This makes it possible to implement various things without having to do lookups in a table, but instead access the data directly. Besides very fast lookups this can also improve scalability by removing a potentially contended table. A couple of examples of planned future usage of magic references are ETS table identifiers, and BIF timer identifiers. Besides future optimizations using magic references it should also be possible to replace the exposed magic binary cludge with magic references. That is, magic binaries that are exposed as empty binaries to the Erlang software.
2017-02-03Merge branch 'egil/20/erts/signal-service/OTP-14186'Björn-Egil Dahlberg
* egil/20/erts/signal-service/OTP-14186: kernel: Document signal server erts: Use os module instead of erts_internal for set_signal/2 erts: Do not handle SIGILL erts: Fix thread suspend in crashdump erts: Do not enable SIGINT erts: Use generic signal handler erts: Add OS signal tests erts: Handle SIGUSR1 via signal service instead erts: Handle SIGTERM via signal service instead kernel: Add gen_event signal server and default handler erts: Add SIGHUP signal handler erts: Remove whitespace errors Conflicts: erts/emulator/beam/bif.tab
2017-02-02erts: Use os module instead of erts_internal for set_signal/2Björn-Egil Dahlberg
* Add specs * Change return signature to 'ok' instead of 'true'
2017-02-02erts: Use generic signal handlerBjörn-Egil Dahlberg
2017-02-01Merge branch 'josevalim/atu8-chunk/PR-1078/OTP-14178'Björn Gustavsson
* josevalim/atu8-chunk/PR-1078/OTP-14178: Add new AtU8 beam chunk
2017-01-30Add new AtU8 beam chunkJosé Valim
The new chunk stores atoms encoded in UTF-8. beam_lib has also been modified to handle the new 'utf8_atoms' attribute while the 'atoms' attribute may be a missing chunk from now on. The binary_to_atom/2 BIF can now encode any utf8 binary with up to 255 characters. The list_to_atom/1 BIF can now accept codepoints higher than 255 with up to 255 characters (thanks to Björn Gustavsson).
2017-01-25erts: Remove broken hash from ErlangBjörn-Egil Dahlberg
erlang:hash/2 has been deprecated for a while, time to remove it.
2017-01-17Scheduler wall time support for dirty schedulersRickard Green
2017-01-12Perform potentially long GC on dirty schedulers if availableRickard Green
2017-01-12Return and exception trace for nif-export scheduled BIFsRickard Green
The support is somewhat primitive, since it is determined at call time if trace on return or exception should be sent.
2017-01-12Optimize handling of BIF errorsRickard Green
2017-01-12Support for dirty BIFsRickard Green
2016-10-12erts: Refactor rename Export.code[] to Export.beam[]Sverker Eriksson
to avoid scary merge errors.
2016-10-12erts: Refactor out func_info into structLukas Larsson
This commit adds two new structs to be used to represent erlang code in erts. ErtsCodeInfo is used to describe the i_func_info header that is part of all Export entries and the prelude of each function. This replaces all the BeamInstr * that were previously used to point to these locations. After this change the code should never use BeamInstr * with offsets to figure out different parts of the func_info header. ErtsCodeMFA is a struct that is used to descripe a MFA in code. It is used within ErtsCodeInfo and also in Process->current. All function that previously took Eterm * or BeamInstr * to identify a MFA now use the ErtsCodeMFA or ErtsCodeInfo where appropriate. The code has been tested to work when adding a new field to the ErtsCodeInfo struct, but some updates are needed in ops.tab to make it work.
2016-08-12Option to erlang:garbage_collect to request minor (generational) GCDmytro Lytovchenko
Note: Minor GC option is a hint, and GC may still decide to run fullsweep. Test case for major and minor gc on self Test case for major and minor gs on some other process + async gc test check docs fix
2016-06-29Fix group_leader/2Rickard Green
2016-06-10erts: Add port monitorsDmytro Lytovchenko
* erlang:monitor/2 with port argument is added, erlang:demonitor, using port task API and avoiding locking; * port_info and process_info support for monitored ports (with named port monitors support); * Exit signals contain type 'process' or 'port'; * Propagation of port exit signals; * Self-cleaning when origin process dies with monitor on; * 8 test cases + testcase for port driver crashing; * Documentation for all of the above (monitor, demonitor, port_info and process_info) updated
2016-05-27Merge branch 'richcarl/erts/fix-init-stop/PR-911/OTP-13630/OTP-13631'Sverker Eriksson
2016-05-25Remove the 'message_queue_data' option 'mixed'Rickard Green
2016-05-25erts: Make erlang:halt/2 truncate string argSverker Eriksson
if too long.
2016-05-25erts: Implement halt/0 and halt/1 in ErlangSverker Eriksson
just to make things simpler.
2016-05-11Merge branch 'rickard/ds-proc-exit/OTP-13123'Rickard Green
* rickard/ds-proc-exit/OTP-13123: Add dirty_heap_access test case Add dirty_call_while_terminated test case Move dirty nif test cases into dirty_nif_SUITE Add better support for communication with a process executing dirty NIF Remove conditional dirty schedulers API
2016-05-11Add better support for communication with a process executing dirty NIFRickard Green
- Termination of a process... - Modify trace flags of process... - Process info on process... - Register/unregister of name on process... - Set group leader on process... ... while it is executing a dirty NIF.
2016-05-10erts: Implement max_heap_size process flagLukas Larsson
The max_heap_size process flag can be used to limit the growth of a process heap by killing it before it becomes too large to handle. It is possible to set the maximum using the `erl +hmax` option, `system_flag(max_heap_size, ...)`, `spawn_opt(Fun, [{max_heap_size, ...}])` and `process_flag(max_heap_size, ...)`. It is possible to configure the behaviour of the process when the maximum heap size is reached. The process may be sent an untrappable exit signal with reason kill and/or send an error_logger message with details on the process state. A new trace event called gc_max_heap_size is also triggered for the garbage_collection trace flag when the heap grows larger than the configured size. If kill and error_logger are disabled, it is still possible to see that the maximum has been reached by doing garbage collection tracing on the process. The heap size is defined as the sum of the heap memory that the process is currently using. This includes all generational heaps, the stack, any messages that are considered to be part of the heap and any extra memory the garbage collector may need during collection. In the current implementation this means that when a process is set using on_heap message queue data mode, the messages that are in the internal message queue are counted towards this value. For off_heap, only matched messages count towards the size of the heap. For mixed, it depends on race conditions within the VM whether a message is part of the heap or not. Below is an example run of the new behaviour: Eshell V8.0 (abort with ^G) 1> f(P),P = spawn_opt(fun() -> receive ok -> ok end end, [{max_heap_size, 512}]). <0.60.0> 2> erlang:trace(P, true, [garbage_collection, procs]). 1 3> [P ! lists:duplicate(M,M) || M <- lists:seq(1,15)],ok. ok 4> =ERROR REPORT==== 26-Apr-2016::16:25:10 === Process: <0.60.0> Context: maximum heap size reached Max heap size: 512 Total heap size: 723 Kill: true Error Logger: true GC Info: [{old_heap_block_size,0}, {heap_block_size,609}, {mbuf_size,145}, {recent_size,0}, {stack_size,9}, {old_heap_size,0}, {heap_size,211}, {bin_vheap_size,0}, {bin_vheap_block_size,46422}, {bin_old_vheap_size,0}, {bin_old_vheap_block_size,46422}] flush(). Shell got {trace,<0.60.0>,gc_start, [{old_heap_block_size,0}, {heap_block_size,233}, {mbuf_size,145}, {recent_size,0}, {stack_size,9}, {old_heap_size,0}, {heap_size,211}, {bin_vheap_size,0}, {bin_vheap_block_size,46422}, {bin_old_vheap_size,0}, {bin_old_vheap_block_size,46422}]} Shell got {trace,<0.60.0>,gc_max_heap_size, [{old_heap_block_size,0}, {heap_block_size,609}, {mbuf_size,145}, {recent_size,0}, {stack_size,9}, {old_heap_size,0}, {heap_size,211}, {bin_vheap_size,0}, {bin_vheap_block_size,46422}, {bin_old_vheap_size,0}, {bin_old_vheap_block_size,46422}]} Shell got {trace,<0.60.0>,exit,killed}
2016-05-09Merge branch 'sverker/trace-send-receive-matchspec/OTP-13507'Sverker Eriksson
2016-05-04erts: Add Sender in 'receive' trace matchspecSverker Eriksson
All 'EXIT' and monitor messages are sent from 'system' Timeouts are "sent" from 'clock_service'
2016-05-04Merge branch 'rickard/reds-fix/master/OTP-13512'Rickard Green
* rickard/reds-fix/master/OTP-13512: Ensure correct reduction counting
2016-05-04Ensure correct reduction countingRickard Green
2016-04-26Yield after setting sensitive for save_callsLukas Larsson
2016-04-15erts: Extend process and port tracingLukas Larsson
This commit completes the tracing for processes so that all messages sent by a process (via nifs or otherwise) will be traced. The commit also adds tracing of all types of events from ports. When enabling tracing using erlang:trace, the 'all' flag now also enables tracing on all ports. OTP-13496
2016-04-15erts: Implement tracer modulesLukas Larsson
Add the possibility to use modules as trace data receivers. The functions in the module have to be nifs as otherwise complex trace probes will be very hard to handle (complex means trace probes for ports for example). This commit changes the way that the ptab->tracer field works from always being an immediate, to now be NIL if no tracer is present or else be the tuple {TracerModule, TracerState} where TracerModule is an atom that is later used to lookup the appropriate tracer callbacks to call and TracerState is just passed to the tracer callback. The default process and port tracers have been rewritten to use the new API. This commit also changes the order which trace messages are delivered to the potential tracer process. Any enif_send done in a tracer module may be delayed indefinitely because of lock order issues. If a message is delayed any other trace message send from that process is also delayed so that order is preserved for each traced entity. This means that for some trace events (i.e. send/receive) the events may come in an unintuitive order (receive before send) to the trace receiver. Timestamps are taken when the trace message is generated so trace messages from differented processes may arrive with the timestamp out of order. Both the erlang:trace and seq_trace:set_system_tracer accept the new tracer module tracers and also the backwards compatible arguments. OTP-10267