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* richcarl/add-uptime-function:
Add uptime() shell command
OTP-12752
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Compilation on Erlang 18.0-rc2 is about 10% slower than in Erlang 17.
After some debugging, we have noticed that linting is on average 30%
to 50% slower being the main responsible for the performance reduction.
Later profiling revealed is_filename/1 to be the biggest culprit. The change
in this commit brings compilation times to about the same times as Erlang 17.
Note this commit doesn't change the compiler behaviour compared to Erlang
17 because we didn't sanity check the value given to the file annotation in the
past. I would say checking the filename is not worth it if it means compilation
becomes 10% slower on average. After all, there are many places in the
compiler where it will fail if we give it a malformed tree, I wouldn't then special
case file annotation.
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When compiling parser files, because they rely heavily
on inline annotations, retrieving the nowarn_bif_clash
information from the compiler options is expensive.
This patch stores nowarn_bif_clash in the lint record.
By using erlc +'{eprof,lint_module}' when compiling the
erlang parser, we noticed the time spent on
nowarn_function/2 reduced from 30% to 0.01%.
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to improve the chance of some real disk persistence
before tab2file returns.
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This reverts commit e09dd66dc4d89c62ddfd8c19791f9678d5d787c6.
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This commit adds a new function, ssl:connection_information/[1,2]
to retrive the connection information from a SSLSocket.
And also, this deprecates a function ssl:connection_info/1, and
reimplements connection_info/1 with the new function.
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* kejv/export-digraph-label:
digraph: export label type
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* egil/fix-maps-copy-shallow:
erts: Make hashmap_get halfword safe
erts: Fix ETS db_has_variable check for large Maps
stdlib: Strengthen ETS Maps tests
erts: Fix copy shallow for large Maps
stdlib: Strengthen ETS Maps tests
erts: ETS ordered_set cannot use it's optimization with Maps
stdlib: Strengthen ETS Maps tests
stdlib: Refactor away ?line macro
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Together with vertex and edge, label is a core type of digraph module
according to documentation and therefore should be exported as well.
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The code explaining the behaviour of `filtermap/2` had a syntax error and wouldn't compile
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* bjorn/stdlib/fix-filename-split/OTP-12716:
Correct filename:split(<<"">>)
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* dgud/stdlib/rand/OTP-12586:
stdlib: Document and add normal distributed random value function
stdlib: Add new random functionality/module
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Ensure db_has_variable is tested for large Maps as well.
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Strengthen tests of large Maps in ETS.
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The additional tests in match_object focus on ordered sets.
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filename:split("") returns [], while filename:split(<<"">>) returns
[<<"/">>].
Since the support in the filename module for binary arguments is
much more recent than support for strings, change
filename:split(<<"">>) so that it returns [].
Noticed-by: KOUCHANG
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* peppe/jcl_mode_improvements:
Fix problem with unitialized edlin text buffer
Fix shell crash when in switch command mode
OTP-12673
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It is needed in various tests. It uses the Ziggurat algorithm, which
is the fastest that I know.
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As the erl_anno module is used by the compiler, it must be included
in the set of modules that are used when building the primary
bootstrap.
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As long as the Erlang Compiler and qlc do not agree on the location of
LC warnings, qlc's own warnings about patterns and filters that always
fail have been silenced.
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Introduce erl_anno, an abstraction of the second element of tokens and
tuples in the abstract format. The convention that negative line
numbers can be used for silencing compiler warnings will no longer
work in OTP 19; instead the annotation 'generated' is to be used.
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The old random module contains an old algorithm which have flaws
and the api requires the user to invoke seed and or checking if seed have
been invoked, if a non constant seed is to be used.
The api contains the following features:
- The user can invoke rand:unform/[0|1] directly and get a non constant seeding.
- The api is split in functional and non functional functions,
i.e. usage of _s functions will not affect the process dictionary.
- The api contains several algorithms with different characteristics and
can be extended with new algorithms in the future.
- Contains state of the art random number generators.
- Default algorithm is taylor made for erlang to be fast on 64bits machines.
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* derek121/gen_server_doc_grammar:
Fix grammar in docs for multi_call/*
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* bjorn/use-monotonic-time:
supervisor: Correct restart handling
test_server: Use erlang:monotonic_time/0
compile: Teach 'time' option to show three significant decimals
timer: Use monotonic_time/0 in tc/1,2,3
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fbaa0bec replaced the use of now/0 with erlang:monotonic_time/1 but at
the same time introduced a bug in inPeriod/3 so that it would always
return 'true' (the subtraction Time - Now would always result in
a non-positive number that would always be less than Period).
The symptoms of the bug is that when a child has been restarted the
maximum number of times allowed, the supervisor will terminate,
regardless of how much time that elapses between the restarts.
There was no test case that detected this problem. Add the missing
test case to ensure that this bug stays killed.
Reported-by: Rafał Studnicki
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Also make it possible to copy text buffer from current group
process to the JCL mode
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* bjorn/compiler/eprof:
v3_life: Optimize updating of the variable data base
beam_jump: Replace use of lists:dropwhile/2 with a custom function
beam_asm: Eliminate unnecessary use of iolist_to_binary/1
beam_bsm: Optimize btb_index()
beam_type: Eliminate redundant calls to checkerror_1/2
erl_expand_records: Simplify handling of call_ext instructions
beam_utils: Optimize index_labels_1/2
beam_block: Optimize matching of binary literals
Move rewriting of bs_match from beam_clean to beam_z
v3_codegen: Reduce cost for fixing up bs_match_string instructions
v3_codegen: Optimize "turning" of y registers
v3_kernel: Optimize subst_vsub/3
orddict: Eliminate unnecessary consing in store/3 and others
compile: Add the {eprof,Pass} option for easy eprof running
compile: Eliminate unnecessary wrappers for compiler passes
Add z_SUITE to validate loaded code
test suite: Always place .core files in data directories
test suites: Unload modules compiled from .core or .S
compilation_SUITE: Unload tested modules using the code server
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The erl_expand_records module have inherited code from sys_pre_expand.
We can simplify the code for handling the call_ext instruction to
make the code clearer and a smidge faster.
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As a minor optimization, eliminate unnecessary cons operations
in store/3, append/3, append_list/3, update/4, and update_counter/3.
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* zandra/fix-ssl-obsolete-arity:
add arity to obsolete_1(ssl, negotiated_next_protocol, 1)
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* wmalik/slave-specs:
Remove unused comments
Fix Host and Name type in slave.erl
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A warning for an unmatched return was introduced in aaa7c917.
The caller of openzip_close/1 ignores the return value, which
could be an error tuple. In this situation, handling a fatal
error, it is OK to ignore the return value; thus, we only need
to make it explicit that we are ignoring the return value.
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* bjorn/maps:
Document the new {badmap,Term} and {badkey,Key} exceptions
Raise more descriptive error messages for failed map operations
erl_term.h: Add is_not_map() macro
Tigthen code for the i_get_map_elements/3 instruction
Pre-compute hash values for the general get_map_elements instruction
Teach the loader to pre-compute the hash value for single-key lookups
Optimize use of i_get_map_element/4
beam_emu: Slightly optimize update_map_{assoc,exact}
v3_codegen: Don't sort map keys in map creation/update
beam_validator: No longer require strict literal term order
Sort maps keys in the loader
De-optimize the has_map_fields instructions
erts/map_SUITE.erl: Add a test case that tests has_map_fields
Fully evaluate is_map/1 for literals at load-time
map_SUITE: Add tests of is_map/1 with literal maps
Run a clone of map_SUITE without optimizations
Remove the fail label operand of the new_map instruction
Correct transformation of put_map_assoc to new_map
Remove support for put_map_exact without a source map
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According to EEP-43 for maps, a 'badmap' exception should be
generated when an attempt is made to update non-map term such as:
<<>>#{a=>42}
That was not implemented in the OTP 17.
José Valim suggested that we should take the opportunity to
improve the errors coming from map operations:
http://erlang.org/pipermail/erlang-questions/2015-February/083588.html
This commit implement better errors from map operations similar
to his suggestion.
When a map update operation (Map#{...}) or a BIF that expects a map
is given a non-map term, the exception will be:
{badmap,Term}
This kind of exception is similar to the {badfun,Term} exception
from operations that expect a fun.
When a map operation requires a key that is not present in a map,
the following exception will be raised:
{badkey,Key}
José Valim suggested that the exception should be
{badkey,Key,Map}. We decided not to do that because the map
could potentially be huge and cause problems if the error
propagated through links to other processes.
For BIFs, it could be argued that the exceptions could be simply
'badmap' and 'badkey', because the bad map and bad key can be found in
the argument list for the BIF in the stack backtrace. However, for the
map update operation (Map#{...}), the bad map or bad key will not be
included in the stack backtrace, so that information must be included
in the exception reason itself. For consistency, the BIFs should raise
the same exceptions as update operation.
If more than one key is missing, it is undefined which of
keys that will be reported in the {badkey,Key} exception.
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* egil/fix-maps-module-exceptions/OTP-12657:
stdlib: Correct maps module exceptions upon errors
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