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The old time API is based on erlang:now/0. The major issue with
erlang:now/0 is that it was intended to be used for so many
unrelated things. This tied these unrelated operations together
and unnecessarily caused performance, scalability as well as
accuracy, and precision issues for operations that do not need
to have such issues. The new API spreads different functionality
over multiple functions in order to improve on this.
The new API consists of a number of new BIFs:
- erlang:convert_time_unit/3
- erlang:monotonic_time/0
- erlang:monotonic_time/1
- erlang:system_time/0
- erlang:system_time/1
- erlang:time_offset/0
- erlang:time_offset/1
- erlang:timestamp/0
- erlang:unique_integer/0
- erlang:unique_integer/1
- os:system_time/0
- os:system_time/1
and a number of extensions of existing BIFs:
- erlang:monitor(time_offset, clock_service)
- erlang:system_flag(time_offset, finalize)
- erlang:system_info(os_monotonic_time_source)
- erlang:system_info(time_offset)
- erlang:system_info(time_warp_mode)
- erlang:system_info(time_correction)
- erlang:system_info(start_time)
See the "Time and Time Correction in Erlang" chapter of the
ERTS User's Guide for more information.
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* tuncer/doc-fixes:
dict(3): fix typo reported by Rabbe Fogelholm
Fix minor eprof and fprof doc issues
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* siri/gen_server/try-catch/OTP-12263:
Add spec for gen_server:terminate/6,7
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* dgud/testcasecuddling:
stdlib: Fix timing issue in testcase
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Correct a bug introduced in commit 8498a3.
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* derek121/doc-spelling-grammar-fixes:
Fix spelling and grammar
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* legoscia/io-message-queue-optimisation:
Optimise io requests for long message queues
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The reason for this is a requirement on enabling ssh_sftp to write a tar file on the server.
This new api function is used by ssh_sftp:open_tar/3,4.
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This is to prevent dialyzer warning "no local return".
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* siri/no-unicode-atoms/OTP-12172:
Remove comments about unicode atoms in OTP 18
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maint
* nox/stdlib/ms_transform-locate-shadow-warning/OTP-12264:
Fix locations of shadowing warnings in ms_transform
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There was once a plan to implement support for unicode atoms in OTP
18. This plan has been stopped until further notice, and the
information about this is now removed from the documentation.
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If a callback function was terminated with exit/1, there would be no
stack trace in the ERROR REPORT produced by gen_server. This has been
corrected. The actual exit reason for the process is not changed.
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The correction is due to the the evil testcase
dets_SUITE:simultaneous_open(). If the process repairing a Dets file
is killed (should normally never happen), and another process tries to
repair the file, a temporary file from the first process could live on
for a while, even after a successful call to file:delete(). This has
only been seen on W-nd-ows, where it is a known problem.
There are other ways to deal with the problem (rename the file; use
some other filename), but we continue using one certain filename in
order to be as backwards compatible as possible.
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OTP-12224
* vinoski/edlin-ctrl-u:
Make shell ctrl-u save killed text correctly
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* siri/appups-17.4:
Fix stdlib.appup for OTP-17.4
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Fix edlin to correctly save text killed with ctrl-u. Prior to this fix,
entering text into the Erlang shell and then killing it with ctrl-u
followed by yanking it back with ctrl-y would result in the yanked text
being the reverse of the original killed text.
Add a test for the fix to interactive_shell_SUITE.
(This is the same fix as in PR#416, but that PR was never completed.)
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* ap/attribute_fun_arity_in_map/OTP-12213:
stdlib: Test Map attributes via erl_pp
stdlib: erl_parse abstract Maps
stdlib: Refactor ?line in erl_pp_SUITE:misc_attrs
stdlib: Refactor Maps farity attributes
Allow Name/Arity syntax in maps inside attributes
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* egil/fix-erl_pp/OTP-12190:
stdlib: Handle key type expressions
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* siri/new-dialyzer-gen_event/OTP-12206:
Fix dialyzer warnings for unmatched return in gen_event
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* capflam/filelib_wildcard_fix:
Fix filelib:wildcard/2 when 'Cwd' ends with a dot
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This was introduced by PR 445, commit
2e78c5f3e7f9991484ceb5d56e5b0086331101be.
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Conflicts:
OTP_VERSION
lib/ssh/test/ssh_connection_SUITE.erl
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* josevalim/jv-genevent:
Do not rely on macros with implicit vars
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This is to allow upgrade from stdlib-2.2 (OTP-17.3).
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The appup tests for kernel, stdlib and sasl tests that the appup file
allows upgrade from the previous and current major release to the
current release. If, in the current release, the application version
was not changed compared to the previous release, then we would still
test that the appup supported the upgrade (i.e. from current release
to current release). This is now changed, in order to avoid test
failures on patch releases where kernel, stdlib and sasl are not
changed.
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Another error message is generated when the process exits, ignore it.
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* egil/fix-maps-type-pretty-print/OTP-12190:
edoc, erl_docgen: Enhance internal map type format
stdlib: Fix maps type pretty printing
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* sstrollo/seb/obsolete_checking_fix/OTP-12187:
Fix broken deprecation warnings in ssh application
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Ensure that the monitor reference is present in all receive clauses, so
that the compiler optimisation kicks in and the run time won't depend on
the length of the message queue of the calling process.
Remove the 'EXIT' clause, as its presence breaks the optimisation, and
that case is handled by the 'DOWN' clause anyway.
The test io_SUITE:io_with_huge_message_queue is an adaptation of
gen_server_SUITE:call_with_huge_message_queue.
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Adjacent separator characters are treated as one in
string:tokens/2. This was shown in the example in the reference manual
but it was not written in words. A note about this is now added.
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Properly align union typed assoc values.
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This commit also provides the benefit that the Label argument
in gen:call/3 is no longer used, as we can access the sender
in the From argument. Therefore, we should be able to change
the Label to something more relevant in the future.
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* egil/maps-with-doc-tests/OTP-12137:
stdlib: Test maps:with/2
stdlib: Document maps:with/2
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* nox/erl_scan-fix-column-tracking:
Properly track column numbers in erl_scan
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* dgud/stdlib/format_status_terminate/OTP-11967:
stdlib: Call format_status even if terminate callback crashes
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