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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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* maint:
Fix testcase
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* rickard/rq-len/OTP-13201:
Fix testcase
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* palas/maint:
inets: Add PATCH method to client and server
OTP-13286
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LONG_LIVED is not thread safe on non-smp and
can only be used by scheduler.
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perf counter is now part of the function pointer interface
and also the function returns the value instead of writing
to a memory buffer.
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Microstate accounting is a way to track which state the
different threads within ERTS are in. The main usage area
is to pin point performance bottlenecks by checking which
states the threads are in and then from there figuring out
why and where to optimize.
Since checking whether microstate accounting is on or off is
relatively expensive if done in a short loop only a few of the
states are enabled by default and more states can be enabled
through configure.
I've done some benchmarking and the overhead with it turned off
is not noticible and with it on it is a fraction of a percent.
If you enable the extra states, depending on the benchmark,
the ovehead when turned off is about 1% and when turned on
somewhere inbetween 5-15%.
OTP-12345
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The perf_counter is a very very cheap and high resolution timer
that can be used to timestamp system events. It does not have
monoticity guarantees, but should on most OS's expose a monotonous
time.
A special instruction has been created for this counter to further
speed up fetching it.
OTP-12908
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ERTS_WRITE_UNLIKELY can be used to place global variables in
a specific section where only data that is very rarely modified
sits. This is used to improve cache locality.
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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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* maint:
Fix inet driver multi timers using new time API
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* rickard/tcp-accept-tmo-bug/OTP-13254:
Fix inet driver multi timers using new time API
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* maint:
Introduce time management in native APIs
Introduce time warp safe replacement for safe_fixed option
Introduce time warp safe trace timestamp formats
Conflicts:
erts/emulator/beam/erl_bif_trace.c
erts/emulator/beam/erl_driver.h
erts/emulator/beam/erl_nif.h
erts/emulator/beam/erl_trace.c
erts/preloaded/ebin/erlang.beam
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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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* bjorn/stdlib/remove-tuple-fun-vestiges:
Eliminate redundant double is_function test
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* maint:
Check for already started beam_lib crypto server
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* lrascao/stdlib/beam_lib-race-condition/OTP-13278:
Check for already started beam_lib crypto server
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* hb/dialyzer/restrict_module_type/OTP-13244:
dialyzer: Remove t_parameterized_module/0 from erl_types
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Parameterized modules are no longer supported, so module() can only be
an atom().
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Conflicts:
OTP_VERSION
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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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When tuple funs were still supported, the idiom for allowing
real funs with a certain arity but not tuple funs was:
is_function(Fun) andalso is_function(Fun, Arity)
The reason that both tests were needed is because:
is_function({M,F}) would return 'false'
is_function({M,F}, Arity) would return 'true'
In 53ec991d19, is_function/2 was updated to only return 'false'
for tuples, so the call to is_function/1 can be removed.
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* aronisstav/compiler/extend-cerl_trees_mapfold/OTP-13280:
Extend cerl_trees:mapfold with a 'pre-order' operation
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* maint:
Use file read buffering in dbg:trace_client
Do not consider "." part of names in edlin
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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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Line table was left uninitialized for hipe (stub) modules
causing process_info(OtherPid, current_location) to crash.
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Before the first matching alias was returned, but we want the longest one to
be returned.
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When manipulating Core Erlang trees it may be useful to perform some
operation when a node is visited, before inspecting children nodes. The
definition of cerl_tree:mapfold/3 does not allow that, as it applies the
given function only after all the recursive calls on the children nodes
have been completed.
This patch adds a new argument to mapfold: a function that is applied when
a node is first entered.
As an example of its use, consider the case where one wants to move a
'call' node earlier, by adding 'let' node and replacing the 'call' node
with the defined variable. The name of that variable must be specified
before one traverses the inner tree (especially if such replacements can be
nested).
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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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