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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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* sverk/nlmills-pr653/efile-union-pwritev/OTP-12653:
erts: Cleanup code in invoke_pwritev
Use the correct union member inside efile_drv
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* sverk/crypto/rm-EVP_CIPHER_CTX_new:
crypto: Fix undefined symbol EVP_CIPHER_CTX_new
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* ia/ssh/channel-gracefull-shutdown/OTP-12648:
ssh: Shutdown sftp channel gracefully
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* egil/fix-maps-module-exceptions/OTP-12657:
stdlib: Correct maps module exceptions upon errors
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* egil/fix-maps-match_spec-return/OTP-12656:
erts: Fix building of Map result from match_specs
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* peppe/common_test/report_error_if_missing_suite:
Fix problem with suite compilation failures not being correctly reported
OTP-10816
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If ssh_connection:subsystem/4 fails we do not want to crash but rather
terminate gracefully.
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* ia/inets/remove-ssi/OTP-12156:
inets: Remove SSI (Server Side Includes)
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* hb/stdlib/fix_orddict_doc/OTP-12651:
stdlib: Correct orddict(3)
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fold() and map() handle elements in a well-defined order.
Thanks to Rabbe Fogelholm for pointing out the bug.
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* origin/peppe/common_test/longname_problem:
Fix error in ct_logs, not handling long names correctly
OTP-12643
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Also do some minor logging improvements
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Bad input to maps module function will now yield exceptions:
* {badmap,NotMap} or,
* badarg
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The `invoke_pwritev()` function was in some places using the union
member intended for the `invoke_writev()` function.
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* egil/maps-test-coverage:
erts: Remove code that was commented out
erts: Cover maps:values/1 for large maps
erts: Test maps:from_list/1 shrinking
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* egil/fix-maps-deep-colliding-merge:
erts: Fix deep colliding hash values in maps:from_list/1
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* egil/fix-hash-float-zero/OTP-12641:
erts: Ensure hashing of zero is consistent
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Erlang treats positive and negative zero as equal, meaning,
true = 0.0 =:= 0.0/-1
However, Erlangs hash functions: hash, phash and phash2 did not
reflect this behaviour. Meaning, the hash values produced by
the different hash functions would not be identical for positive
and negative zero.
This commit ensures that hash value of positive zero is always
produced regardless of the signedness of the zero float, i.e.
true = erlang:phash2(0.0) =:= erlang:phash2(0.0/-1)
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A faulty "box-value" entered into the heap which could cause
a segmentation fault in the garbage collector if it was written
on a heap fragment.
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Conflicts:
OTP_VERSION
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* ia/ssh/packet_size0/OTP-12645:
ssh: Reset upgrade instructions to default
ssh: Change version (vsn.mk)
ssh: Option minimal_remote_max_packet_size and test cases
ssh: fix loop bug for zero maximum_packet_size.
ssh: Add ssh_info:print/1 to write onto a file descriptor
ssh: Add {active, false} to ssh listen socket
ssh: Change send_buf implementation from list to queue
ssh: Remove error report
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* bjorn/stdlib/cuddle-with-tests:
Eliminate deprecated now/0 used as timestamp
Eliminate use of now/0 for creating a unique filename
Eliminate use of deprecated now/0 for measuring time
Eliminate use of deprecated now/0 for random number generation
Speed up timer_simple_SUITE:timer_perf/1
Speed up timer_SUITE
Optimize gen_server_SUITE:hibernate/1
Optimize gen_event_SUITE:hibernate/1
Optimize gen_fsm_SUITE:hibernate/1
Optimize unicode_SUITE:ex_binaries_errors* test cases
Optimize unicode_SUITE:binaries_errors/1
binary_module_SUITE: Remove unnecessary calls to the binref module
Optimize binary_module:random_ref_comp/1
Optimize io_proto_SUITE:unicode_options_gen/1
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Rewrite the code to measure and print elapsed time instead of just
printing timestamps for the start and stop of each operation.
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Use erlang:unique_integer/1 instead.
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Use erlang:monotonic_time/1 instead of now/0.
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Use erlang:timestamp/0 instead now/0 when seeding the random
number generator.
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In big_test/1, there is 9 seconds sleep before spawning any timers.
Why? Before the sleep nrev processes are started, but they are likely
to finish running before the 9 seconds have elapsed.
Since I see no reason at all for the sleep, I will remove it.
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The single test case in timer_SUITE is annoyingly slow. On average,
its running time is about 4 minutes (estimated by a
back-of-the-envelope calculation).
Scale down the delay times in the main loop and the length of timers
started. The running average time should now be around 80 seconds.
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The running time for gen_server_SUITE:hibernate/1 is about 12 seconds
because of 1000 ms sleeps in the test case. Introduce a helper
function to avoid sleeping more than necessary.
While we are it, also remove all ?line macros in the test case.
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The running time for gen_event_SUITE:hibernate/1 is about 20 seconds
because of 1000 ms sleeps in the test case. Introduce helper
functions to avoid sleeping more than necessary.
While we are it, also remove all ?line macros in the test case.
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The running time for gen_fsm_SUITE:hibernate/1 is almost 30 seconds
because of 1000 ms sleeps in the test case. Introduce helper
functions to avoid sleeping more than necessary.
While we are it, also remove all ?line macros in the test case.
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Refactor the code so that the error test cases for utf16 can
share the code for big and little endian. Do the same for utf32.
The major optimization is the observation that the following code:
byte_size(unicode:characters_to_binary(List, unicode, {utf16,big})
can be replaced with:
2*length(List)
which is much faster. (That optimization is not safe in general,
but for the lists used in the error tests cases, it is.)
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unicode_SUITE:binaries_errors/1 is the slowest test case in
unicode_SUITE. Its running time is about 50 seconds on my computer.
Break apart unicode_SUITE:binaries_errors/1 into several test cases
that can run in parallel.
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The compile_pattern/1 function in the binref module is a dummy
function. Therefore, calling binref:match/2 once with the plain
pattern and once with a "pre-compiled" pattern will take twice as
long, but will not help us find more errors.
I shaved off one fourth of the running time for random_ref_comp/1
by eliminating the unnecessary calls to the binref module.
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Use a stack allocated context and EVP_CIPHER_CTX_init/cleanup
instead of dynamic EVP_CIPHER_CTX_new/free that does not exist in older
0.9.8 versions.
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* sverk/maps-bin2term-eqhash-bug/12585:
erts: Fix bug in map_from_list when keys clash in both value and hash
erts: Fix bug in binary_to_term for big maps with 32 bit hash-clash
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Repeated keys will shrink map to a flatmap if the number of pairs drops below the limit.
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* ia/ssl/improve_docs:
ssl: Document enhancements
ssl: Align with alphabetical order
ssl: Align with editorial changes
ssl: Correct merge error
ssl: Add links
ssl: Correct typos
ssl: Correct XML-tag
ssl: Technically clarify description
ssl: Editorial updates
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