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Now tries to use whole width of signed long (Sint) and this halves amount of
multiplications needed to parse long integers. New code is 2-3 times faster
than the old code for large inputs (tens and hundreds of digits), behavior
should not change for small inputs.
Test ran 10k times with GC forced between attempts.
Was (R17):
720 el base 10: 0.14682 sec; base 16: 0.192722 sec; base 36: 0.337118 sec.
2800 el base 10: 1.794133 sec; base 16: 2.735106 sec; base 36: 4.761108 sec.
6500 el base 10: 9.316434 sec; base 16: 14.109469 sec; base 36: 25.319263 sec.
Now (R19 Dev)
720 el base 10: 0.10265 sec; base 16: 0.10851 sec; base 36: 0.160478 sec.
2800 el base 10: 1.002793 sec; base 16: 1.360649 sec; base 36: 2.174309 sec.
6500 el base 10: 4.722197 sec; base 16: 6.60522 sec; base 36: 10.552795 sec.
Added test for corner cases and sign bit corruption. Replaced macros with
inline and hid it inside C file to not pollute global namespace
Old bug in #define LG2_LOOKUP: Replaced with inline function and table
recalculated for all bases 2 to 36 (was 2 to 64)
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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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Conflicts:
lib/dialyzer/src/dialyzer_analysis_callgraph.erl
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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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- replace system-specific #ifndef around sigaction() override with a test
for OVERRIDE_SIGACTION, #define or #undef that as appropriate in each
system-specific block
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- move extern declarations of LIBC_SIGACTION() from system-specific
blocks to the common LIBC_SIGACTION block
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- rename __next_sigaction to next_sigaction, to avoid defining _-prefixed symbols
- factor out common code for declaring and initializing next_sigaction,
system-specific code now only needs to #define NEXT_SIGACTION
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- rename __SIGACTION to LIBC_SIGACTION, to avoid defining _-prefixed symbols
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- add block for NetBSD, define dummy INIT() macro
- eliminate ifndef NetBSD around INIT() invocation
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- remove glibc < 2.3 code
- move glibc-2.2 comment to glibc >= 2.3 block
- remove obsolete "only supports" comment
- remove support for broken sigaltstack() in pre-2.4 Linux kernels
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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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