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The presence of this symbol is libc-specific. In particular, it is
absent from musl. The correct solution is to use uint32_t.
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And remove old case of using only page alignment (12 bits).
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The OSE port is no longer supported and this commit removed it
and any changes related to it. The things that were general
improvements have been left in the code.
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* egil/remove-halfword/OTP-12883: (21 commits)
erts: Remove halfword etp-commands
erts: Remove halfword MemKind mseg
erts: Remove halfword bases in ETS
erts: Remove halfword CHECK_POINTER_MASK
erts: Remove halfword relative printf
erts: Remove halfword valgrind suppress file
erts: Remove halfword specific tests
erts: Remove halfword specific allocator types
erts: Remove halfword BINARY RELs
erts: Remove halfword is_same bases macro
erts: Reinstate copy_object over-allocation optimization
erts: Remove halfword copy_object_rel
erts: Remove halfword object manipulation
erts: Remove halfword heap relative comparisions
erts: Remove halfword pointer compression
erts: Remove halfword basic relative heap operations
erts: Remove halfword from configure
erts: Remove halfword in lib_src
erts: Remove halfword in erl_nif.h
erts: Remove halfword in erl_driver.h
...
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Conflicts:
OTP_VERSION
erts/doc/src/notes.xml
erts/vsn.mk
otp_versions.table
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* sverk/poll-lost-wakeup/OTP-12859:
erts: Fix race in poller thread wake up
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OTP-12845
* bruce/change-license:
fix errors caused by changed line numbers
Change license text to APLv2
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to have one common implementation for both _kp and _nkp.
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* egil/erts/high_accuracy_sleep/OTP-12236:
erts: Add high accuracy poll timeouts
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Different poll/select implementations have different ways
to handle timeouts of < ms accuracy. Most have extended
API like pselect or such, while others rely on using
timerfds (epoll_wait). If no high accuracy timeout is
available, we simply round up to nearest ms. If we do not
roundup we will spin the last ms when waiting for a timeout
which is not desirable.
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The old time API is based on erlang:now/0. The major issue with
erlang:now/0 is that it was intended to be used for so many
unrelated things. This tied these unrelated operations together
and unnecessarily caused performance, scalability as well as
accuracy, and precision issues for operations that do not need
to have such issues. The new API spreads different functionality
over multiple functions in order to improve on this.
The new API consists of a number of new BIFs:
- erlang:convert_time_unit/3
- erlang:monotonic_time/0
- erlang:monotonic_time/1
- erlang:system_time/0
- erlang:system_time/1
- erlang:time_offset/0
- erlang:time_offset/1
- erlang:timestamp/0
- erlang:unique_integer/0
- erlang:unique_integer/1
- os:system_time/0
- os:system_time/1
and a number of extensions of existing BIFs:
- erlang:monitor(time_offset, clock_service)
- erlang:system_flag(time_offset, finalize)
- erlang:system_info(os_monotonic_time_source)
- erlang:system_info(time_offset)
- erlang:system_info(time_warp_mode)
- erlang:system_info(time_correction)
- erlang:system_info(start_time)
See the "Time and Time Correction in Erlang" chapter of the
ERTS User's Guide for more information.
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rickard/maint-17/eager-check-io/OTP-12117
* rickard/eager-check-io/OTP-12117:
Introduce support for eager check I/O scheduling
Conflicts:
erts/emulator/beam/erl_bif_info.c
erts/emulator/beam/erl_init.c
erts/emulator/beam/erl_process.c
erts/preloaded/ebin/erlang.beam
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* paulgray/dtrace_snprintf_fix/OTP-11816:
Fix DTrace/SystemTap-related formatting
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Thanks to Michał Ptaszek for bringing this embarrassing formatting error to
my attention. Many DTrace/SystemTap trace strings are incorrectly
truncated at 4/8 bytes, depending on the CPU word size. This patch expands
the work from commit d032e097 by zheng siyao.
Michał's report to the erlang-bugs list can be found at:
http://erlang.org/pipermail/erlang-bugs/2014-March/004250.html
Conflicts:
erts/emulator/beam/beam_emu.c
erts/emulator/beam/copy.c
erts/emulator/beam/dist.c
erts/emulator/beam/erl_async.c
erts/emulator/beam/erl_bif_port.c
erts/emulator/beam/erl_port_task.c
erts/emulator/beam/erl_process.c
erts/emulator/beam/io.c
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This new API has less impact on the check_io code and
also removes the callback from ErlDrvEntry. The downside
is that you have to give the resolve function when creating
each event.
Also the mode if the resolve was removed as this mimics the
win32 code and decreases complexity.
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This port has support for both non-smp and smp.
It contains a new way to do io checking in which erts_poll_wait
receives the payload of the polled entity. This has implications
for all linked-in drivers.
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The warning is:
sys/common/erl_poll.c:2513:72: warning: for loop has empty body [-Wempty-body]
for (prev_ps = pollsets; ps != prev_ps->next; prev_ps = prev_ps->next);
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Replaced the +MMscmgc switch with the +MMscrfsd switch. The old switch
didn't reflect what it controlled.
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by not holding the mseg lock while reading version and option info
which is unnecessary anyway.
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As part of erlang:system_info({allocator,mseg_alloc})
and erl_crash.dump
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and change from Uint to UWord values
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that could return segments that are too small after being super aligned.
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Must keep mutex to serialize (un)reserve ops.
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