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Name conforms to EEP.
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* map:remove/2
* map:keys/1
* map:values/1
* map:is_key/2
* map:update/3
- Equivalent to ':=' operator in #{ K := V } maps.
* map:from_list/1
- map:from_list/1 takes any unsorted key/value list, [{K,V}], and
produces a map. Duplicate keys are removed. The latest key is kept.
* map:find/2
- Searches for a pair that *equals* input key.
* map:merge/2
- Merge two maps to one map.
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To add a type-testing guard BIF, the following steps are needed:
* The BIF itself is added to bif.tab (note that it should be declared
using "ubif", not "bif"), and its implementation to erl_bif_op.c.
* erl_internal must be modified in 3 places: The type test must be
recognized as guard BIF, as a type test, and it must be auto-imported.
* There must be an instruction that implements the same type test as
the BIF (it will be used in guards). beam_utils:bif_to_test/3 must
be updated to recognize the new guard BIF.
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Yielding binary_to_term.
OTP-11535
* tag 'OTP_R16B03_yielding_binary_to_term':
Increase versions for OTP_R16B03_yielding_binary_to_term
erts: Adjust term_to_binary reduction factors
erts: Yield after trapping term_to_binary if gc has been ordered
erts: Let term_to_binary disable gc while trapping
erts: Improve stress of binary_to_term in binary_SUITE
erts: Fix bug in binary_to_term for compressed on halfword
erts: Fix crash when binary_to_term throws badarg
erts: Trapping memcpy in binary_to_term
erts: Cleanup code for trapping binary_to_term
erts: Add erlang wrappers to binary_to_term
trapping uncompress
trapping size calculation
trapping binary_to_term/2
trapping STRING_EXT
trapping lists and tuples
trapping binary_to_term passing binary_SUITE
Conflicts:
erts/preloaded/ebin/erlang.beam
erts/preloaded/ebin/erts_internal.beam
erts/vsn.mk
lib/kernel/vsn.mk
lib/stdlib/vsn.mk
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* sverk/trapping-bin2term:
erts: Adjust term_to_binary reduction factors
erts: Yield after trapping term_to_binary if gc has been ordered
erts: Let term_to_binary disable gc while trapping
erts: Improve stress of binary_to_term in binary_SUITE
erts: Fix bug in binary_to_term for compressed on halfword
erts: Fix crash when binary_to_term throws badarg
erts: Trapping memcpy in binary_to_term
erts: Cleanup code for trapping binary_to_term
erts: Add erlang wrappers to binary_to_term
trapping uncompress
trapping size calculation
trapping binary_to_term/2
trapping STRING_EXT
trapping lists and tuples
trapping binary_to_term passing binary_SUITE
Parallel check_process_code when code_server purge a module
Functionality for disabling garbage collection
Use asynchronous check_process_code in code_parallel_SUITE
Execution of system tasks in context of another process
Conflicts:
erts/emulator/beam/external.c
erts/emulator/beam/sys.h
erts/emulator/test/binary_SUITE.erl
erts/preloaded/ebin/erlang.beam
erts/preloaded/ebin/erts_internal.beam
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* rickard/garbage_collect/OTP-11388:
Parallel check_process_code when code_server purge a module
Functionality for disabling garbage collection
Use asynchronous check_process_code in code_parallel_SUITE
Execution of system tasks in context of another process
Conflicts:
bootstrap/lib/kernel/ebin/hipe_unified_loader.beam
erts/preloaded/ebin/erlang.beam
erts/preloaded/ebin/erts_internal.beam
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to not expose the trapping BIF in the stacktrace
when it throws badarg.
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A process requesting a system task to be executed in the context of
another process will be notified by a message when the task has
executed. This message will be on the form:
{RequestType, RequestId, Pid, Result}.
A process requesting a system task to be executed can set priority
on the system task. The requester typically set the same priority
on the task as its own process priority, and by this avoiding
priority inversion. A request for execution of a system task is
made by calling the statically linked in NIF
erts_internal:request_system_task(Pid, Prio, Request). This is an
undocumented ERTS internal function that should remain so. It
should *only* be called from BIF implementations.
Currently defined system tasks are:
* garbage_collect
* check_process_code
Further system tasks can and will be implemented in the future.
The erlang:garbage_collect/[1,2] and erlang:check_process_code/[2,3]
BIFs are now implemented using system tasks. Both the
'garbage_collect' and the 'check_process_code' operations perform
or may perform garbage_collections. By doing these via the
system task functionality all garbage collect operations in the
system will be performed solely in the context of the process
being garbage collected. This makes it possible to later implement
functionality for disabling garbage collection of a process over
context switches.
Newly introduced BIFs:
* erlang:garbage_collect/2 - The new second argument is an option
list. Introduced option:
* {async, RequestId} - making it possible for users to issue
asynchronous garbage collect requests.
* erlang:check_process_code/3 - The new third argument is an
option list. Introduced options:
* {async, RequestId} - making it possible for users to issue
asynchronous check process code requests.
* {allow_gc, boolean()} - making it possible to issue requests
that aren't allowed to garbage collect (operation will abort
if gc should be needed).
These options have been introduced as a preparation for
parallelization of check_process_code operations when the
code_server is about to purge a module.
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Conflicts:
bootstrap/lib/kernel/ebin/os.beam
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New BIF os:unsetenv/1 which deletes an environment variable and
returns 'true'.
Does not change any old functionality.
Calls the libc function unsetenv(3) on UNIX and
SetEnvironmentVariableW(key, NULL) on Windows. The unicode support
is the same as for os:getenv and os:putenv.
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Add notempty_atstart, no_start_optimize, ucp and
never_utf options from new PCRE version.
Use the new notempty_atstart in global matching.
Add inspect/2 function
Correctly handle dupnames when capturing a name, as
in Perl, get the leftmost matching occurence.
Also added all_names, to get all the names in the pattern
in alphabetical (name) order.
To be able to use this in global matching, an inspect
function that can dig out a namelist was added.
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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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Added: binary_to_integer/1,2, integer_to_binary/1,2
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We have decided that we don't want to deal with the compilations
of prim_file:get_cwd() returning a binary when the current
directory name cannot be translated losslessly to a list (i.e.
when the run-time system was started with +fnu and the current directory
name contains bytes that are not part of a valid UTF-8 sequence).
Therefore, if prim_file:set_cwd() is given a binary as the pathname,
we will need to check the binary to make sure it can be translated
to a list. We will introduce a new BIF, called prim_file:is_translatable/1,
which will check both filename encoding mode, and if it is one of
Unicode modes, the binary as well.
We don't need to do anything special if prim_file:set_cwd() is passed
a list.
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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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* erlang:insert_element/3 - extend a tuple at an index
* erlang:delete_element/2 - remove an element at an index
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rickard/r16/port-optimizations/OTP-10336
* rickard/port-optimizations/OTP-10336:
Change annotate level for emacs-22 in cerl
Update etp-commands
Add documentation on communication in Erlang
Add support for busy port message queue
Add driver callback epilogue
Implement true asynchronous signaling between processes and ports
Add erl_drv_[send|output]_term
Move busy port flag
Use rwlock for driver list
Optimize management of port tasks
Improve configuration of process and port tables
Remove R9 compatibility features
Use ptab functionality also for ports
Prepare for use of ptab functionality also for ports
Atomic port state
Generalize process table implementation
Implement functionality for delaying thread progress from unmanaged threads
Conflicts:
erts/doc/src/erl_driver.xml
erts/doc/src/erlang.xml
erts/emulator/beam/beam_bif_load.c
erts/emulator/beam/beam_bp.c
erts/emulator/beam/beam_emu.c
erts/emulator/beam/bif.c
erts/emulator/beam/copy.c
erts/emulator/beam/erl_alloc.c
erts/emulator/beam/erl_alloc.types
erts/emulator/beam/erl_bif_info.c
erts/emulator/beam/erl_bif_port.c
erts/emulator/beam/erl_bif_trace.c
erts/emulator/beam/erl_init.c
erts/emulator/beam/erl_message.c
erts/emulator/beam/erl_port_task.c
erts/emulator/beam/erl_process.c
erts/emulator/beam/erl_process.h
erts/emulator/beam/erl_process_lock.c
erts/emulator/beam/erl_trace.c
erts/emulator/beam/export.h
erts/emulator/beam/global.h
erts/emulator/beam/io.c
erts/emulator/sys/unix/sys.c
erts/emulator/sys/vxworks/sys.c
erts/emulator/test/port_SUITE.erl
erts/etc/unix/cerl.src
erts/preloaded/ebin/erlang.beam
erts/preloaded/ebin/prim_inet.beam
erts/preloaded/src/prim_inet.erl
lib/hipe/cerl/erl_bif_types.erl
lib/kernel/doc/src/inet.xml
lib/kernel/src/inet.erl
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* maint:
Remove stale code for hybrid heap and incremental GC
Remove the hipe_bifs:show_message_area/0 BIF
Remove support for erlang:system_info(global_heaps_size)
Remove the erlang:garbage_collect_message_area/0 BIF
Remove workarounds for hybrid and shared heaps in test suites
Conflicts:
erts/doc/src/erlang.xml
erts/emulator/beam/erl_message.c
erts/emulator/beam/erl_process.c
erts/emulator/beam/erl_process.h
erts/emulator/hipe/hipe_bif2.tab
lib/hipe/cerl/erl_bif_types.erl
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Conflicts:
erts/emulator/beam/beam_emu.c
erts/emulator/beam/bif.tab
erts/preloaded/ebin/prim_file.beam
lib/hipe/cerl/erl_bif_types.erl
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User tags in a dynamic trace enabled VM are spread throughout the system
in the same way as seq_trace tokens. This is used by the file module
and various other modules to get hold of the tag from the user process
without changing the protocol.
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Conflicts:
erts/doc/src/erlang.xml
erts/emulator/beam/erl_process.c
erts/emulator/beam/erl_process.h
erts/emulator/test/bif_SUITE.erl
erts/preloaded/ebin/erlang.beam
erts/preloaded/src/erlang.erl
lib/hipe/cerl/erl_bif_types.erl
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Introduce two new BIFs, erlang:prepare_loading/2 and
erlang:finish_loading/1, and re-implement erlang:load_module/2 in
Erlang code.
We have two reasons for doing this:
* To facilitate suspending a process if another process
is already doing code loading.
* In the future, we can implement parallel and atomic loading
of several modules. Atomic loading works except for modules with
on_load handlers. Because of that issue, erlang:finish_loading/2
will currently only accept a list with a single magic binary.
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* erlang:universaltime_to_seconds/1 changed to
erlang:universaltime_to_posixtime/1
* erlang:seconds_to_universaltime/1 changed to
erlang:posixtime_to_universaltime/1
Let prim_file.erl reflect these changes.
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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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This BIF's second parameter is a list of options.
Currently the only allowed option is {minor_version, Version}
where version is either 0 (default) or 1.
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Add erlang:check_old_code/1 to quickly check whether a module
has old code. If there is no old code, there is no need to call
erlang:check_process_code/2 for all processes, which will save
some time if there are many processes.
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erts_debug:instructions/0 is useful for finding which specific
instructions that are not used at all.
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* commit 'bg/nif_error':
crypto: Add type specs for all documented functions
crypto: Use erlang:nif_error/1 to squelch false Dialyzer warnings
Add erlang:nif_error/1,2
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This BIF was only used by the now broken SAE support.
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A stub function that is supposed to be replaced by a NIF usually
calls erlang:error/1 to cause an exception if the NIF library
is not loaded. For example:
foo() ->
erlang:error(nif_not_loaded).
The problem is that although erlang:error/1 will normally never be
called, Dialyzer will think that any call to the function will fail
and thus generate false warnings. Adding a spec for the function
will not help because Dialyzer will not believe the spec.
Add erlang:nif_error/1,2 that work exactly like erlang:error/1,2.
Define the return types for both BIFs to be t_any().
erlang:nif_error is used like this:
-spec foo() -> binary().
foo() ->
erlang:nif_error(nif_not_loaded).
(The -spec is optional but highly recommended, since Dialyzer
otherwise has no chance to figure out the types.)
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Add the gc_bif's to the VM.
Add infrastructure for gc_bif's (guard bifs that can gc) with two and.
three arguments in VM (loader and VM).
Add compiler support for gc_bif with three arguments.
Add compiler (and interpreter) support for new guard BIFs.
Add testcases for new guard BIFs in compiler and emulator.
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Add testcases for encode/decode_unsigned/1,2.
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Add testcases for referenced_byte_size/1.
Add failure tests for referenced_byte_size.
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Add testcases for binary:list_to_bin/1 and binary:copy/1,2.
Add reference implementation of list_to_bin/1.
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