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* utilize the power of two
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* Not used except in valgrind but there mseg is disabled completely
via Meamin.
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Conflicts:
lib/diameter/autoconf/vxworks/sed.general
xcomp/README.md
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* rickard/erts-poll/OTP-10019:
Fix wakeup functionality in no thread support case
OTP-10036 is completely unrelated to this commit. Only here to trigger
info about the OTP-10036 ticket in the release notes script...
OTP-10036
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Add probes to the virtual machine, except (mostly) the efile_drv.c
driver and other file I/O-related source files.
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I/O events could potentially be delayed for ever when enabling
kernel-poll on a non-SMP runtime system executing on Solaris. When
also combined with async-threads the runtime system hung before
completing the boot phase. This bug was introduced in
erts-5.9/OTP-R15B.
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Almost all uses of the 'long' datatype is removed from VM and tests
Emulator test now runs w/o drivers crashing
Nasty abs bug fixed in VM as well as type errors in allocator debug functions
Still one allocator test that fails, domain knowledge is needed to fix that.
Fix type inconsistency in beam_load causing crashes
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The ERTS internal system block functionality has been replaced by
new functionality for blocking the system. The old system block
functionality had contention issues and complexity issues. The
new functionality piggy-backs on thread progress tracking functionality
needed by newly introduced lock-free synchronization in the runtime
system. When the functionality for blocking the system isn't used
there is more or less no overhead at all. This since the functionality
for tracking thread progress is there and needed anyway.
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A number of memory allocation optimizations have been implemented. Most
optimizations reduce contention caused by synchronization between
threads during allocation and deallocation of memory. Most notably:
* Synchronization of memory management in scheduler specific allocator
instances has been rewritten to use lock-free synchronization.
* Synchronization of memory management in scheduler specific
pre-allocators has been rewritten to use lock-free synchronization.
* The 'mseg_alloc' memory segment allocator now use scheduler specific
instances instead of one instance. Apart from reducing contention
this also ensures that memory allocators always create memory
segments on the local NUMA node on a NUMA system.
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Conflicts:
erts/aclocal.m4
erts/emulator/beam/erl_db.c
erts/emulator/sys/win32/sys.c
erts/include/internal/ethread_header_config.h.in
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All uses of the old deprecated atomic API in the runtime system
have been replaced with the use of the new atomic API. In a lot of
places this change imply a relaxation of memory barriers used.
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* rickard/barriers/OTP-9281:
Silence warnings
Fix build with hipe on amd64
Reduce number of atomic ops
Use 32-bit atomic for port snapshot
Remove pointless erts_ports_alive variable
Ensure quick break
Ensure that all rehashing information are seen when done
Ensure that stack updates are seen when stack is released
Add needed barriers for write_concurrency tables
Homogenize memory barriers on atomics
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Make sure that we don't have to wait in poll before break
handling is done.
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Also add 'low' field in system_info(allocator)
SHORT_LIVED is still in low memory
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Existing %bp to print pointer size integers does not work in halfword
emulator to print Eterm size integers.
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* sverker/valgrind-new-suppressions:
Make halfword emulator with valgrind target allocate low memory
Add erts_alloc_permanent_cache_aligned to supress valgrind
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Limit ERTS_MSEG_FAKE_SEGMENTS (that is otherwise set for valgrind
target) to not apply to low memory needed by halfword emulator. This
will reduce the fault detection capability of valgrind for low memory.
Also correct a bug in the initial mmap and make sure the returned
memory region does not reach into high memory.
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* rickard/poll-wake/OTP-9019:
Simplify erts_poll_wait() wakeup logic
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In halfword emulator, make ETS use a variant of the internal term
format that uses relative offsets instead of absolute pointers. This
will allow storage in high memory (>4G). Preprocessor macros (like
list_val_rel(TERM,BASE)) are used to make normal (fullword) emulator
almost completely unchanged while still reusing most of the code.
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* mk/net-dragonfly-bsd-patches:
Remove unused variables
Use proper install method
Add support for DragonFly BSD
Add support for NetBSD
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A race condition in erts_poll() could cause
delay of poll for I/O.
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These are the current NetBSD pkgsrc patches.
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Missing memory barriers in erts_poll() could cause the runtime system to
hang indefinitely.
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