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* dgud/mnesia/del_schema_hangs/OTP-13284:
mnesia: let loader check if tablelock is needed
mnesia: Avoid deadlock possibility in mnesia:del_table_copy schema
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* bjorn/compiler/beam_bsm/OTP-13309:
Eliminate crash because of unsafe delaying of sub-binary creation
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* nybek/speed_up_supervisor_count_children:
Speed up supervisor:count_children/1; simple_one_for_one
Add supervisor:get_callback_module/1
OTP-13290
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move_table_copy needs the lock that was set previously in del_table_copy.
This doesn't work on old nodes, so bump protocol version and check it.
Remove old protocol conversion code, which have been around since OTP-R15.
Checking if lock is needed requires rpc communication via mnesia_gvar
ets table to be backwards compatible.
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The argument of byte_size() is a bitstring().
The code in erl_bif_types that finds cases where comparisons always
return true or false is corrected when it comes to maps and bit
strings.
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OTP-13311
* sverk/ecc-fixes:
Ensure testing ssl with supported ciphers only
Only use supported EC curves in crypto tests
Check the result of EC_GROUP_new_curve_* calls
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* ia/ssl/handshake-fragmentation/OTP-13306:
ssl: Big handshake messages needs to be fragmented on TLS record level
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[James Fish:]
Dialyzer always asserts that files and directories passed in its
options exist. Therefore it is not possible to remove a beam/module
from a PLT when the beam file no longer exists. Dialyzer should not to
check files exist on disk when removing from the PLT.
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* anders/diameter/appup/OTP-13283:
Add missing appup after 17.5.6.8 merge
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The following code would fail to compile:
decode(<<Code/integer, Bin/binary>>) ->
<<C1/integer, B1/binary>> = Bin,
case C1 of
X when X =:= 1 orelse X =:= 2 ->
Bin2 = <<>>;
_ ->
Bin2 = B1
end,
case Code of
1 -> decode(Bin2);
_ -> Bin2
end.
The error message would be:
t: function decode/1+28:
Internal consistency check failed - please report this bug.
Instruction: return
Error: {match_context,{x,0}}:
The beam_bsm pass would delay the creation of a sub-binary when it was
unsafe to do so. The culprit was the btb_follow_branch/3 function that
for performance reasons cached labels that had already been checked.
The problem was the safety of a label also depends on the contents
of the registers. Therefore, the key for caching needs to be both
the label and the register contents.
Reported-by: José Valim
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del_table_copy grabs a write lock in a new process in prepare_op/3 to
change 'where_to_read' when a table copy is updated.
When del_table_copy(schema, Node) is called all copies located on Node
are deleted, and thus many locks are taken. Since this was done outside
of the schema-transaction, mnesia's deadlock prevention algorithms
was sidestepped and a deadlock could occur.
Fix by always grabbing write-locks for all changed tabs early and in the same
transaction, this might slow done the operation some but it must be done
and it also cleans up the code.
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* ia/ssl/validator:
ssl: Only start a new session validator if the old one has finished its work
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* tnt-dev/fix-function-index-sort:
Don't sort function index when it's not necessary
OTP-13302
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* legoscia/tls-dist-listen-ip:
TLS distribution: bind erts socket to localhost
OTP-13300
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* legoscia/patch-3:
Fix documentation of net_kernel:allow/1
OTP-13299
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* rj/release-handler-noproc-fix:
Fix noproc crash during release installation
OTP-13291
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Speed up supervisor:count_children/1 for simple_one_for_one
supervisors. This is achieved by avoiding looping through all the
child process and verifying that each one is alive.
For a supervisor with 100,000 'temporary' children the count-time will
drop from approx 25ms to about 0.005ms.
For a supervisor with 100,000 'permanent' or 'transient' children the
count-time will drop from approx 30ms to about 0.005ms.
This avoids having the supervisor block for an extended period while
the count takes place. Under normal circumstances the accuracy of the
result should also improve since the duration is too short for many
processes to die during the count.
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This function is used by release_handler during upgrade. This was
earlier implemented in the release_handler, but it required a copy og
the definition of the supervisor's internal state, which caused
problems when this state was updated.
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When cover instruments binary comprehensions it's generating a
{block, ...} abstract code term inside a {bc, ...} term that is causing
the evaluation to fail at runtime. Removing the block statement
eliminates the error.
The template of a bit string comprehension cannot have a counter since
it is not allowed to be a block.
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* rickard/monotonic-time-improvements/OTP-13222:
Use nano second time unit in tracing
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* margnus1/bs_unit_fix:
hipe: Fix signed compares of unsigned sizes
beam: Fix overflow bug in i_bs_add_jId
hipe: Add tests for bad bit syntax float sizes
Add a case testing the handling of guards involving binaries
Add some more binary syntax construction tests
hipe: Guard against enormous numbers in ranges
hipe: Fix constructing huge binaries
hipe: Fix binary constructions failing with badarith
Add missing corner-case to bs_construct_SUITE
hipe: Allow unsigned args in hipe_rtl_arith
hipe: test unit size match in bs_put_binary_all
hipe: test unit size match in bs_append
Fix hipe_rtl_binary_construct:floorlog2/1
OTP-13272
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* aronisstav/dialyzer-missing-callback-info:
Fix inadvertent deletion of callback info
Eliminate ugly case statements
Remove dead code related to missing behaviour info
OTP-13287
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* palas/maint:
inets: Add PATCH method to client and server
OTP-13286
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* legoscia/tls-dist-connect-options:
ssl_dist_SUITE: don't use deprecated functions
TLS distribution: support inet_dist_connect_options
OTP-13285
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* rickard/monotonic-time-improvements/OTP-13222:
Introduce time management in native APIs
Introduce time warp safe replacement for safe_fixed option
Introduce time warp safe trace timestamp formats
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* lrascao/stdlib/beam_lib-race-condition/OTP-13278:
Check for already started beam_lib crypto server
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When release_handler_1:get_supervised_procs/0 does a recursive walk of
the supervision tree, it calls sys:get_status/1 on supervisors, to check
if they are suspended or running.
This fixes a race condition where a list of supervisor pids is gathered,
one of them (legitimately) exits before release_handler can examine it,
then sys:get_status/1 is called with a dead pid, causing an exit(noproc)
See: http://erlang.org/pipermail/erlang-questions/2015-August/085712.html
(To recreate this problem for testing, I added a timer:sleep into the
release_handler_1 code, and killed a supervisor during
get_supervised_procs being called).
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* ia/maint/inets/mod_alias/OTP-13248:
inets: Prepare for release
inets: Traverse all aliases looking for the longest match
inets: Use re instead of inets_regexp
# Conflicts:
# lib/inets/vsn.mk
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In commit b8c6a119.
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* gomoripeti/dbg/read_ahead/OTP-13279:
Use file read buffering in dbg:trace_client
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* josevalim/stdlib/edlin/OTP-13281:
Do not consider "." part of names in edlin
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When starting the beam_lib crypto server, don't crash
when it is already running. Some other process might
have already called it.
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There are two problematic areas: EC curve selection and
interoperability tests with OpenSSL.
The tests shouldn't assume any particular EC curve is available, but
should always check the list of curves reported by
tls_v1:ecc_curves/1.
And during interoperability tests the tests shouldn't assume that any
cipher suite supported by Erlang is also supported by OpenSSL. There
are OpenSSL packages where the command line openssl tool only supports
a subset of the ciphers available in libcrypto. The actual list of
supported cipher suites thus shall be queried from OpenSSL.
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Avoid hardcoding EC curve names in tests where it basically doesn't
matter which curve is used. Take one of the supported curbes instead.
Also, when testing ECDH key generation, skip unsupported curves.
These changes are to simplify dealing with exotic libcrypto builds
that don't support certain curves (for example RHEL disallows < 256
bit curves). The crypto application is only able to detect the
supported curves on a very coarse level (ECC support in general and
GF2m curves), so it may be necessary to edit the list of curves in the
crypto_ec_curves modules. But that should be the only necessary
modification to make the crypto tests pass.
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Before the first matching alias was returned, but we want the longest one to
be returned.
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Trace files are typically large but contain small terms so we can expect
a performance gain from read buffering. dbg:trace_client with a dummy
handler ran more then 3x faster on a sample 200MB trace file.
fprof:profile can also gain a bit.
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* bjorn/kernel/code/OTP-9375:
Update documentation for code-loading functions
code: Correct the types for error returns
Eliminate run-time system crash in code:load_abs/1
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Some of the error reasons were not explained.
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The specifications for functions that load code in the 'code'
module (e.g. code:load_file/1) have some problems:
* The specs claim that the functions can return {error,on_load}, but
they never do. However, they can return {error,on_load_failure} if
the -on_load function in a module fails.
* The specs claim that the functions can return {error,native_code},
but they never do.
While we are it, also extend the on_load_errors/1 test case to test
that the load functions return {error,on_load_failure} when an
-on_load function fails.
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