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An ECONNRESET is a socket error which tells us that a TCP peer has sent
an RST. The RST indicates that they have aborted the connection and
that the payload we have received should not be considered complete. Up
until now, the implementation of TCP in inet_drv.c has hidden the
receipt of the RST from the user, treating it as though it was just
a FIN terminating the read side of the socket.
There are many cases where user code needs to be able to distinguish
between a socket that was closed normally and one that was aborted.
Setting the option {show_econnreset, true} enables the user to receive
ECONNRESET errors on both active and passive sockets.
A connected socket returned from gen_tcp:accept/1 will inherit the
show_econnreset setting of the listening socket.
By default this option is set to {show_econnreset, false}.
Note that this patch only enables the reporting of ECONNRESET when
the socket is being read from. It does not report ECONNRESET (or
EPIPE) when the user tries to write to a connection when an RST
has already been received. Currently the TCP implementation in
inet_drv.c hides all such send errors from the user in favour
of returning {error, close}. A separate patch will be needed to
enable the reporting of such errors.
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All flags was not always set when setting multiple aux work
flags at once. This scenario is fortunately quite uncommon
and only caused further delay in memory deallocations.
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* egil/fix-internal_hash-list-opt:
erts: Fix faulty list optimization in make_internal_hash
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Reported-by: Rory Byrne
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In the documentation for erl_nif, in the map iterator example,
the iterator argument was forgotten in the call to function
enif_map_iterator_create. This is now fixed.
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* henrik/typo-fix-branch:
Fixing typo
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To make it easier to parse stack trace information from tools
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Fix the sorting logic in add_multi_timer() and expand the test case
coverage around this area.
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* egil/cuddle-tests:
erts: Remove remaining ?line macros in trace_meta_SUITE
erts: Relax trace_meta_SUITE:on_and_off_test/1
erts: Remove ?line macro in trace_meta_SUITE:on_and_off_test/1
kernel: Remove remaining ?line macros in gen_tcp_misc_SUITE
kernel: Relax gen_tcp_misc_SUITE don't wait for timeout
kernel: Relax test gen_tcp_misc_SUITE:wrapping_oct/1
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Also, fixed some confusing indentations and whitespace errors.
This commit only has whitespace changes and removal of ?line macros.
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Thanks to Nathanael Bartley
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* jh/freebsdcpu/OTP-12796:
os_mon: Comply with C89 standard
os_mon: Update docs for FreeBSD
os_mon: Implement cpu_sup:util/0,1 for FreeBSD
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OTP-12797
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Caused bus error on 32-bit sparc from unaligned 64-bit word in
binary_to_term trap context.
Also add _UNALIGNED_ magic macros to avoid double alignment padding
in NIF resources.
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* vinoski/enif-raise-exception/OTP-12770:
Add enif_raise_exception
Enhance enif_has_pending_exception
Fix for enif_schedule_nif and exceptions
Conflicts:
erts/doc/src/erl_nif.xml
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* sverk/nif-map-docs:
erts: Cleanup fsummary lines in erl_nif docs
erts: Fix alphabetic order in erl_nif doc
erts: Add docs for map functions in nif API
erts: Rename ErlNifMapIteratorEntry enums
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* legoscia/dialyzer/cache-hipe-binaries/OTP-12779:
Dialyzer to cache results of HiPE compilation
Change hipe_bifs:system_crc/1 to hipe_bifs:system_crc/0
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by removing all full stop.
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enif_make_reverse_list was at the wrong place
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* richcarl/warnings-by-default/OTP-12781:
stdlib: Use warning channel in test qlc_SUITE:otp_6964/1
stdlib: Fix testcase for qlc_SUITE
kernel: Fix code_SUITE with respect to new logger default
Map error logger warnings to warning messages by default
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The macro HIPE_SYSTEM_CRC used to contain a hidden cookie from the VM
that generated hipe_literals.hrl. This means that BEAM files containing
that macro would be tied to a particular version of the VM.
Change hipe_bifs:system_crc such that it doesn't require a hidden cookie
to return the desired value.
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To differentiate between first/last map entry
and head/tail which is before/after first/last map entry.
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Add enif_raise_exception function to allow NIFs to raise error
exceptions holding any Erlang terms. This does not replace or
deprecate the enif_make_badarg function, though, because raising
badarg errors is so idiomatic in NIFs. Reimplement enif_make_badarg on
top of enif_raise_exception. Add new tests for enif_raise_exception
for both normal and dirty NIFs. Add documentation for
enif_raise_exception.
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Sverker Eriksson came up with the following idea: to handle a future
ability for NIFs to raise more than just badarg exceptions, modify the
recently-added enif_has_pending_exception function to take a second
argument: a pointer to ERL_NIF_TERM. If this argument is a null
pointer, ignore it. Otherwise, if the first argument, an ErlNifEnv*,
has an associated exception, set the pointed-to ERL_NIF_TERM of the
second argument to the value of the exception term. Add new tests and
documentation for this modification.
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Fix a place where part of the implementation of enif_schedule_nif was
not using the ErlNifEnv exception_thrown field when it should have
been.
Also make the result of enif_schedule_nif return false when passed to
enif_is_exception, and add an assertion for this to the nif_SUITE.c
tests.
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Authors: Wasif Malik and Johannes Huning
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* egil/cuddle-tests:
erts: Relax monitor_SUITE:mixer/1
erts: Refactor monitor_SUITE:mixer/1
stdlib: Minor change of unicode_SUITE
stdlib: Relax iterations in binary_module_SUITE:random_ref_sr_comp/1
Remove ?line macro in binary_module_SUITE:random_ref_sr_comp/1
stdlib: Relax iterations in binary_module_SUITE:random_ref_comp/1
stdlib: Remove ?line macro in binary_module_SUITE:random_ref_comp/1
stdlib: Relax filesize of io_proto_SUITE:unicode_options_gen/1
stdlib: Relax rand_SUITE timeout
debugger: Relax test map_SUITE:t_guard_receive_large/1
tools: Relax lcnt test time
stdlib: ets_SUITE cuddling
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* jlouis/cocci-noderef-fixes:
Correct usage of sizeof() for pointer types
OTP-12771
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Remove ?line macro.
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During code purging and check_process_code, the checking of the binary reference
embedded in the match binary state was omitted for the tracing tests. This would cause
the binary match state to reference deallocated memory.
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* vinoski/ds-timer-wheel-fix:
Avoid timer wheel work in dirty schedulers
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* rickard/timer-improvement/OTP-12650:
Fix bug causing timeout to overwrite exit instruction
Doc fixes
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* rickard/fix_alloc_stat_fix/OTP-12766:
Fix statistics reported about fix alloc types
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Also fix and document the broken +We option.
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* bk/configure-arch-ppc64le/OTP-12761:
Add architecture ppc64le architecture as a ppc64
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