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Make use of the new select functions; enif_select_[read|write],
for read and write select. These functions allows us to construct
the select message ourseves:
{'$socket', Socket, select, Ref}
This is in preparations for when we introduce the 'nowait'
(or something similar) value for the timeout argument (in accept,
read and write funcions).
It also solves (we hope) the term leakage problems (it was difficult
to free the environment when there was only one/socket).
OTP-15496
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Firstly, make sure socket (and own) options manipulations
are safe by adding a mutex that we take in the setopt and
getopt functions.
Secondly, change type prefix of various types from
'Socket' to 'ESock' (for instance; SocketDescriptor ->
ESockDescriptor).
OTP-15496
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To increase readability the close function has been slightly
restructured.
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To increase readability the recvmsg result check has been slightly
restructured. In this case we made use of the error case function
(fail) of the recv result check.
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To increase readability the recvfrom result check has been slightly
restructured. In this case we made use pf the error case function
(fail) of the recv result check.
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To increase readability the recv result check has been slightly
restructured.
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To increase readability the send result check has been slightly
restructured.
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The messages sent from the nif code to an erlang process
has been changed to:
{'$socket', Socket :: socket(), Tag :: atom(), Info :: term()}
This is in preparation for (using) the new enif select API.
OTP-15496
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Used ref from wrong environment when building reply.
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* maint:
Updated OTP version
Prepare release
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* maint-20:
Updated OTP version
Prepare release
# Conflicts:
# OTP_VERSION
# erts/doc/src/notes.xml
# erts/vsn.mk
# lib/common_test/doc/src/notes.xml
# lib/common_test/vsn.mk
# lib/erl_interface/doc/src/notes.xml
# lib/erl_interface/vsn.mk
# lib/snmp/doc/src/notes.xml
# lib/snmp/vsn.mk
# lib/ssh/doc/src/notes.xml
# lib/ssh/vsn.mk
# lib/tools/doc/src/notes.xml
# lib/tools/vsn.mk
# make/otp_version_tickets
# otp_versions.table
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* rickard/make-fixes-20/OTP-15657:
Remove own configured RM make variable
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* rickard/make-fixes-20/OTP-15551:
Fix install phase in build system
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* sverker/doc-big-creation-tags/OTP-15766:
erts: Document NEW_PID, NEW_PORT, NEWER_REFERENCE
erts: Add missing docs for DFLAG_MAP_TAG and DFLAG_BIG_CREATION
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'max-au/erts/maint-20/dirty_scheduler_shutdown/PR-2172/OTP-15690' into maint-20
* max-au/erts/maint-20/dirty_scheduler_shutdown/PR-2172/OTP-15690:
erts: Use smp prefix on runq
erts: release dirty runqueue lock before entering endless loop when BEAM is shutting down
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* sverker/ets-no-mbuf-trapping/OTP-15660:
erts: Remove ets traversal yielding if heap fragment
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* bjorn/cuddle-with-tests:
crash dump: Fix printing of "OldBinVHeap unused"
crash dump: Include correct IP for a garbing process
fun_SUITE: Make refc/1 test more reliable
Remove redundant rule from Emakefile
Turn off more optimizations for no_opt modules
test_server_node: Bump compiler compatibility version to OTP 20
erts_test_utils: Bump compiler compatibility version to OTP 20
distribution_SUITE: Remove irrelevant test atom_roundtrip_r16b
bs_construct_SUITE: Rename bs_add_overflow/1 to bs_append_overflow/1
bs_construct_SUITE: Remove troublesome test huge_binary/1
bs_construct_SUITE: Remove incorrect purpose line
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* maint:
Updated OTP version
Prepare release
# Conflicts:
# OTP_VERSION
# make/otp_version_tickets_in_merge
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* sverker/maint-21/doc-big-creation-tags/OTP-15766:
erts: Document NEW_PID, NEW_PORT, NEWER_REFERENCE
erts: Add missing docs for DFLAG_MAP_TAG and DFLAG_BIG_CREATION
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into sverker/maint-21/doc-big-creation-tags/OTP-15766
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During a garbage collection, there could have been an overflow
in the old virtual heap.
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Make sure that the instruction pointer is correct for a garbing
process in a crash dump.
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Wait a little after to make sure that fun holding process to
complete its termination.
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According to the comment, this rule was only needed when communication
with R7B nodes was supported.
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With the new compiler in OTP 22, we have to use more options to
turn off optimizations.
This commit also skips the match_huge_int/1 test case in the
unoptimized clone of the bs_match_int module because it could
crash on memory-constrained computers.
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* maint:
Updated OTP version
Prepare release
# Conflicts:
# OTP_VERSION
# make/otp_version_tickets_in_merge
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* bjorn/erts/measure-process_main/OTP-15620:
Add benchmark
Add erts_debug:interpreter_size/0
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* sverker/node-table-cmp-0-creation-fix:
erts: Revert creation 0 as wildcard in node_table_cmp
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* sverker/revert-big-creation:
Revert "erts: Make DFLAG_BIG_CREATION mandatory"
Revert "erts: Remove old encoding of pids, ports and refs"
Revert "erl_interface: Remove old encoding of pid,port,refs"
Revert "epmd: Support 32-bit creation values in local node"
Revert "jinterface: Remove old encoding of pid,port,refs"
Revert "erl_interface: Support 32-bit creation local cnode"
Revert "erts: Document new EPMD response ALIVE2_X_RESP"
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Communication with OTP R16b has not been supported for a while.
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The test case tests that the bs_append instruction tests for overflow.
Make that clear by renaming the test case.
While at it, also add a few explicit garbage_collection/0 calls to
make it more likeley to run successfully in tight memory situations.
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This test case can fail for the wrong reason (swapping
followed by a timetrap timeout). It is unlikely to fail because
of a real bug.
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This is a partial revert of
bf7c722bd3b30e04a56c2d369fd9f5501a8316d0.
It does not make sense to treat 0 as a wild card in cmp function
for the hash table as creation is part of the hash calculation.
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Previously, all ETS tables used centralized counter variables to keep
track of the number of items stored and the amount of memory
consumed. These counters can cause scalability problems (especially on
big NUMA systems). This commit adds an implementation of a
decentralized counter and modifies the implementation of ETS so that
ETS tables of type ordered_set with write_concurrency enabled use the
decentralized counter. [Experiments][1] indicate that this change
substantially improves the scalability of ETS ordered_set tables with
write_concurrency enabled in scenarios with frequent `ets:insert/2`
and `ets:delete/2` calls.
The new counter is implemented in the module erts_flxctr
(`erts_flxctr.h` and `erts_flxctr.c`). The module has the suffix
flxctr as it contains the implementation of a flexible counter (i.e.,
counter instances can be configured to be either centralized or
decentralized). Counters that are configured to be centralized are
implemented with a single counter variable which is modified with
atomic operations. Decentralized counters are spread over several
cache lines (how many can be configured with the parameter
`+dcg`). The scheduler threads are mapped to cache lines so that there
is no single point of contention when decentralized counters are
updated. The thread progress functionality of the Erlang VM is
utilized to implement support for linearizable snapshots of
decentralized counters. The snapshot functionality is used by the
`ets:info/1` and `ets:info/2` functions.
[1]: http://winsh.me/ets_catree_benchmark/flxctr_res.html
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If it cannot be found in the daily build dir, we try ERL_TOP
incase it is there.
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erts: Optimize arithmetic ops using overflow intrinsics
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