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by putting red/black color bit in 'parent' pointer
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* Coalescing and trimming of free segments in supercarrier
* Management of super aligned and super unaligned areas in
supercarrier
* Management of reservation of physical memory
* erts_mseg usage of erts_mmap
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rickard/aligned-sys_alloc-carriers_maint/OTP-11318
Conflicts:
erts/emulator/beam/erl_alloc.c
erts/emulator/beam/erl_alloc_util.c
erts/emulator/beam/erl_alloc_util.h
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erts_sys_aligned_alloc() is currently implemented using posix_memalign if
it exist, or using _aligned_malloc on Windows.
If erts_sys_aligned_alloc() exist allocators will create sys_alloc
carriers similar to how this was done pre-R16.
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* sverk/darwin-unlimited-select:
erts: Fix dynamic select for darwin
erts: Refactor unlimited select patch
erts: Fix bug in unlimited fd_set patch
Use _DARWIN_UNLIMITED_SELECT in erl_poll
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* rickard/stale-driver-select/OTP-11084:
Fix crash when reporting stale driver select
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Make sure the fd-sets (read and write) are of equal size.
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An attempt to beautify the code by reducing the amount of #ifdef's
in the hot code path.
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This allows erl_poll to select() on file descriptors greater than
FD_SETSIZE (1024) on Darwin. The fd sets are manually (re)allocated and
freed.
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spells __NetBSD__ correctly.
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* egil/fix-mseg_dealloc-arguments/OTP-10912:
erts: Fix refactor error in mseg
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Faulty number of arguments to mseg_dealloc.
Problem arises if we try to compile halfword on operating system
which do not have mremap. Not a supported case.
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This is the base for implementing configurable
~tp printouts, so that the user can define which
characters to view as actually printable in the shell and
by io_lib:format.
The functionality is neither documented nor used in this commit
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* rickard/r16b/port-optimizations-fixes/OTP-10809:
Add erl_drv_busy_msgq_limits() to driver API on Windows
Fix driver port accesses
Fix port exit
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* egil/enhance-mseg-cache/OTP-10840:
erts: Utilize even more cached sbc segments
erts: Prefer sbc segment caching over mbc segments
erts: Segment allocator CircleQ API
erts: Increase default #cached segments to 10
erts: Evict old cached segments for newer ones
erts: Refactor mseg cache
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* saleyn/float_to_list_2/OTP-10837:
Fix memory leak in error case
Use macros instead of constants
float_to_list/2 changed rounding and cosmetic cleanup
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This is needed as C90 (and therefore the win32 compiler) does
not allow constants to be calculations based on other constants.
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Previous default was 5.
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The fix affects list_dir and read_link. Raw filenames are now
never produced, just consumed even if +fnu or +fna is used on
Linux etc.
This also adds the options to get error return or error handler
warning messages with +fn{u|a}{i|w|e} as an option to erl.
This is still not documented and there needs to be other versions
of read_dir and read_link to facilitate reading of all types
of filenames and links.
A check that we will not change to an invalid directory is also needed.
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Use double ended cache queues to evict oldest cache first
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Changed rouding to round half-way up instead of down.
Cosmetic cleanup and error handling of additional edge cases.
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This BIF solves a problem of float_to_list/1 that doesn't allow
specifying the number of digits after the decimal point when
formatting floats.
float_to_list(Float, Options) -> string()
Float = float()
Options = [Option]
Option = {decimals, Decimals::0..249} |
{scientific, Decimals::0..249} |
compact
Returns a string which corresponds to the text representation of
a `Float` formatted using given options.
When decimals option is specified the returned value will contain
at most `Decimals` number of digits past the decimal point.
When `compact` option is provided the trailing zeros at the end
of the list are truncated (this option is only meaningful together
with the `decimals` option). When `scientific` option is provided,
the float will be formatted using scientific notation with
`Decimals` digits of precision. If `Options` is `[]` the function
behaves like `float_to_list/1`. When using `decimals` option and
the number doesn't fit in the static internal buffer of 256 bytes
the function throws `badarg`.
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OTP-10415
* sverk/egil/r16/new-alloc-header-scheme/OTP-10273: (42 commits)
erts: Make ll main mbc fit into 2pow size
erts: Clear entire mseg cache upon request
erts: Reduce max heap sizes
tests: Refactor away ?line macro in beam_SUITE
tests: Fix heap_sizes check
tests: Refactor away ?line macro in process_SUITE
tests: Use new correct min_bin_vheap_size in test
erts: Set super alignment (256kb) and limits for sbct (8Mb) and lmbcs (128Mb)
erts: Do not cache segments that are misaligned
erts: Add mseg cache for large sbc segments
erts: Reintroduce mseg options amcbf and rmcbf
erts: Optimize erl_alloc_util.c by substitute MBC_BLK_SZ
erts: Fix bug when allocating size near sbc_threshold
erts: Make gc sizes fit into MB Carrier blocks
erts: Force sbmbc to be disabled in a crude way
erts: Fix new header scheme for win64
erts: Fix mseg cache. Malplaced NULL pointer
erts: Remove unused mseg options amcbf and rmcbf
erts: Use aligned bits as constant in mseg_alloc
erts: Don't let zero be considered a power of two
...
Conflicts:
erts/emulator/test/process_SUITE.erl
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* SBC may realloc carriers to misaligned addresses which
is perfectly fine. However, those segments may not be cached
because MBC allocations might find them and MBC's *needs*
correct alignment.
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* Not a power of two (unpowered) segements
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Used with new sbc cache
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