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As a preparation for supporting maps in a future commit, refactor
the functions for encoding optional values.
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Most options to the code generation pass are passed through the
process dictionary. At the same time, an Erule or Erules argument
is passed to most code generation functions. The Erule argument
is only an atom indicating the encoding rules ('ber', 'per', or
'uper').
Introduce a new record #gen{} to contain code generation options
and parameters. Pass it as the Erule argument (renaming it to Gen
in functions that we will have to touch anyway). In this commit,
eliminate the use of the variable 'encoding_options' in the process
dictionary.
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asn1ct_check numbers all components in SEQUENCEs and SETs, except
for the associated sequence for INSTANCE OF. Remove this exception
so that the code generation pass can depend on SEQUENCEs being
numbered.
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Introduce helper functions to simplify and reduce the size of
gen_encode_constructed_imm/3.
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The to_encoding_order/1 function can be eliminated if we
incorporate its functionality into textual_order/2.
textual_order/2 has a workaround for TermList being longer
than OrderList. Remove the workaround, because the code
being generated would certainly be wrong (better let the compiler
crash and receive a bug report if it happens). The workaround
was not necessary to successfully compile the entire Erlang/OTP
and to run the asn1 test suite.
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As a preparation for future changes, simplify
gen_dec_constructed_imm_2/6 by breaking it apart to two
functions.
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Performance for processes that receive huge amounts of
messages can be increased by storing the incoming messages
outside the heap (that avoids copying the message in a
garbage collection).
Two OTP processes that are known to receive many messages
are 'rex' (used by 'rpc') and 'error_logger'.
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* maint:
dialyzer: Fix a Dialyzer warning
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* hasse/dialyzer/fix_a_warning:
dialyzer: Fix a Dialyzer warning
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This fixes commit f0867aa2ccbbf5677e0577bba08f8b7bc53ec0ed
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Conflicts:
OTP_VERSION
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Conflicts:
OTP_VERSION
erts/doc/src/notes.xml
erts/emulator/sys/unix/erl_unix_sys.h
erts/emulator/sys/unix/sys.c
erts/vsn.mk
lib/crypto/c_src/crypto.c
lib/crypto/doc/src/notes.xml
lib/crypto/vsn.mk
lib/inets/doc/src/notes.xml
lib/inets/vsn.mk
lib/ssh/doc/src/notes.xml
lib/ssh/src/ssh.app.src
lib/ssh/src/ssh_connection_handler.erl
lib/ssh/vsn.mk
otp_versions.table
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* egil/erts/dont-check-autoconf-version/OTP-14187:
erts: Don't check autoconf version
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Fix a few gen_statem behaviour documentation typos
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The 'deps' field is reset when no longer used, which could possibly
save some memory.
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Spawning all worker processes at once has the potential to increase
peak memory consumption. Therefore the implementation is now slightly
modified: `20 * dialyzer_utils:parallelism()' processes are running in
parallel. 20 i quite a big factor, but seems necessary to keep all
schedulers busy according to the Observer application's Load Charts,
with a 100 ms update interval.
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At common case, which will otherwise leave a big heap.
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Since SCCs and modules are now topologically sorted (relative the
active graph), we can safely assume that workers have been started.
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Although some variable names indicate that lists of SCCs and modules
are sorted, that was not always the case. The effect on the execution
time of sorting them doesn't seem to be significant.
dialyzer_coordinator:sccs_to_pids() should now always return an empty
second list (not yet started workers).
Since the condensation of graphs often needs a lot of heap memory, it
is run in a separate process.
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Compressing the signatures or the contract records would cost time.
The contract records are still held in two places (code server and
PLT) in many cases.
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The two tables for (record) types and exported types are no longer
kept in memory (by the PLT) when analyzing, which reduces memory
consumption.
A first step towards removing (or replacing) the #plt{} record.
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The -T option has not been working for a long time.
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The table used during translation of forms to types used to be a
dictionary of the type info (-type(), -opaque(), and -record()) for
all modules. Now it is reduced to the modules that are needed to
handle references to types in other modules.
The PLT:s type info is still kept on the heap.
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* maint:
dialyzer: Increase time limit for tests
dialyzer: Optimize typesig
dialyzer: Optimize evaluation of complex code
dialyzer: Optimize collection of variables
Conflicts:
lib/dialyzer/src/dialyzer_typesig.erl
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* hasse/dialyzer/memory_opt/OTP-14126:
dialyzer: Increase time limit for tests
dialyzer: Optimize typesig
dialyzer: Optimize evaluation of complex code
dialyzer: Optimize collection of variables
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* ingela/inets/maint/httpd-gracefull-shutdown/OTP-14174:
inets: httpd - shutdown gracefully on connection or TLS handshake errors
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