Major release : otp_src_17.0-rc1
Build date : 2014-01-30
17.0-rc1 is a major new release of Erlang/OTP.
You can download the full source distribution from
http://www.erlang.org/download/otp_src_17.0-rc1.tar.gz
http://www.erlang.org/download/otp_src_17.0-rc1.readme (this file)
Note: To unpack the TAR archive you need a GNU TAR compatible program.
For installation instructions please read the README that is part of
the distribution.
The Windows binary distribution can be downloaded from
http://www.erlang.org/download/otp_win32_17.0-rc1.exe
http://www.erlang.org/download/otp_win64_17.0-rc1.exe
On-line documentation can be found at http://www.erlang.org/doc/.
You can also download the complete HTML documentation or the Unix manual files
http://www.erlang.org/download/otp_doc_html_17.0-rc1.tar.gz
http://www.erlang.org/download/otp_doc_man_17.0-rc1.tar.gz
We also want to thank those that sent us patches, suggestions and bug reports,
The OTP Team
--- HIGHLIGHTS ----------------------------------------------------------
OTP-11368 == erts kernel ==
Add the {active,N} socket option for TCP, UDP, and SCTP,
where N is an integer in the range -32768..32767, to allow a
caller to specify the number of data messages to be delivered
to the controlling process. Once the socket's delivered
message count either reaches 0 or is explicitly set to 0 with
inet:setopts/2 or by including {active,0} as an option when
the socket is created, the socket transitions to passive
({active, false}) mode and the socket's controlling process
receives a message to inform it of the transition. TCP
sockets receive {tcp_passive,Socket}, UDP sockets receive
{udp_passive,Socket} and SCTP sockets receive
{sctp_passive,Socket}.
The socket's delivered message counter defaults to 0, but it
can be set using {active,N} via any gen_tcp, gen_udp, or
gen_sctp function that takes socket options as arguments, or
via inet:setopts/2. New N values are added to the socket's
current counter value, and negative numbers can be used to
reduce the counter value. Specifying a number that would
cause the socket's counter value to go above 32767 causes an
einval error. If a negative number is specified such that the
counter value would become negative, the socket's counter
value is set to 0 and the socket transitions to passive mode.
If the counter value is already 0 and inet:setopts(Socket,
[{active,0}]) is specified, the counter value remains at 0
but the appropriate passive mode transition message is
generated for the socket.
Thanks to Steve Vinoski
OTP-11594 == asn1 ==
The OCTET STRING and BIT STRING types now have a more natural
mapping to Erlang types (binary and bitstring, respectively),
which is more efficient and will avoid useless conversions
between lists and binaries/bitstrings.
This is an incompatible change. To revert to the old mapping
to support existing applications, use the legacy_erlang_types
option.
OTP-11615 == otp ==
A new version scheme for OTP as well as all applications in
OTP has been introduced. Versions will be handled similar to
semantic versioning. The version number MAJOR.MINOR.PATCH
will be changed as follows:
-- MAJOR -- Increased when major changes, including
incompatibilities, have been made.
-- MINOR -- Increased when new functionality has been added.
-- PATCH -- Increased when pure bug fixes have been made.
Versions with even more parts may in exceptional cases exist.
OTP-11616 == erts stdlib hipe dialyzer compiler typer ==
New data type - Maps, according to EEP 43, without variable
keys.
M0 = #{ a => 1, b => 2}, %% to create
M1 = M0#{ a := 10 }, %% to update
M2 = M1#{ "hi" => "hello"}, %% to add new associations
#{ "hi" := V1, a := V2, b := V3} = M2. %% to match keys with
values
See EEP43 for details.
--- appmon --------------------------------------------------------------
OTP-10915 Removed gs based applications and gs based backends. The
observer application replaces the removed applications.
--- documentation -------------------------------------------------------
OTP-10907 The default encoding of Erlang files has been changed from
ISO-8859-1 to UTF-8.
The encoding of XML files has also been changed to UTF-8.
--- otp -----------------------------------------------------------------
OTP-11537 Funs can now be a given a name. Thanks to to Richard O'Keefe
for the idea (EEP37) and to Anthony Ramine for the
implementation.
OTP-11606 Documentation correction in special processes chapter (Thanks
to Alexander Zhuravlev)
OTP-11615 A new version scheme for OTP as well as all applications in
OTP has been introduced. Versions will be handled similar to
semantic versioning. The version number MAJOR.MINOR.PATCH
will be changed as follows:
-- MAJOR -- Increased when major changes, including
incompatibilities, have been made.
-- MINOR -- Increased when new functionality has been added.
-- PATCH -- Increased when pure bug fixes have been made.
Versions with even more parts may in exceptional cases exist.
OTP-11637 Fixed bug in example code in the Distributed Erlang chapter.
(Thanks to Loïc Hoguin.)
--- pman ----------------------------------------------------------------
OTP-10915 Removed gs based applications and gs based backends. The
observer application replaces the removed applications.
--- toolbar -------------------------------------------------------------
OTP-10915 Removed gs based applications and gs based backends. The
observer application replaces the removed applications.
--- tv ------------------------------------------------------------------
OTP-10915 Removed gs based applications and gs based backends. The
observer application replaces the removed applications.
--- asn1-3.0 ------------------------------------------------------------
OTP-10907 The default encoding of Erlang files has been changed from
ISO-8859-1 to UTF-8.
The encoding of XML files has also been changed to UTF-8.
OTP-11258 By giving --enable-static-{nifs,drivers} to configure it is
now possible to statically linking of nifs and drivers to the
main Erlang VM binary. At the moment only the asn1 and crypto
nifs of the Erlang/OTP nifs and drivers have been prepared to
be statically linked. For more details see the Installation
Guide in the System documentation.
OTP-11573 Code generation for the per and uper backends has been
somewhat improved.
OTP-11594 The OCTET STRING and BIT STRING types now have a more natural
mapping to Erlang types (binary and bitstring, respectively),
which is more efficient and will avoid useless conversions
between lists and binaries/bitstrings.
This is an incompatible change. To revert to the old mapping
to support existing applications, use the legacy_erlang_types
option.
--- common_test-1.8 -----------------------------------------------------
OTP-10907 The default encoding of Erlang files has been changed from
ISO-8859-1 to UTF-8.
The encoding of XML files has also been changed to UTF-8.
OTP-11440 Telnet traffic can now be logged by means of a logging
mechanism based on a generic Common Test hook (cth_conn_log)
and an event handler installed in Error Logger
(ct_conn_log_h). This mechanism (which has been used by
ct_netconfc in previous versions of Common Test) makes it
possible to, for example, write data for individual
connections in separate log files. ct_telnet still features
logging on the form used in previous Common Test versions,
and this is also the default logging behaviour if the
cth_conn_log hook is not configured. Please see the ct_telnet
reference manual for details.
--- compiler-5.0 --------------------------------------------------------
OTP-10652 Compilation times for modules with a huge number for record
accesses using the dot operator has been improved.
OTP-10907 The default encoding of Erlang files has been changed from
ISO-8859-1 to UTF-8.
The encoding of XML files has also been changed to UTF-8.
OTP-11056 The compiler can generate somewhat better code by moving let
expressions into sequences. (Thanks to Anthony Ramine.)
OTP-11186 Forbid unsized fields in patterns of binary generators and
simplified v3_core's translation of bit string generators.
(Thanks to Anthony Ramine.)
OTP-11537 Funs can now be a given a name. Thanks to to Richard O'Keefe
for the idea (EEP37) and to Anthony Ramine for the
implementation.
OTP-11544 Using the from_asm option to produce a BEAM file starting
from BEAM assembly code would often fail because early
optimization passes would not understand instructions that
later optimization passes would introduce. (Thanks to Anthony
Ramine.)
OTP-11547 The .core and .S extensions are now documented in the erlc
documentation, and the 'from_core' and 'from_asm' options are
now documented in the compiler documentation. (Thanks to
Tuncer Ayaz.)
OTP-11572 Line numbers would not be correct when a binary construction
such as '<<Bin/binary,...>>' fails. (Thanks to Stanislav
Seletskiy for reporting this bug.)
OTP-11580 The compiler now properly annotates the code in value in the
'after' clause for a 'try' so that Dialyzer no longer
generates a false warning for an unmatched return.
OTP-11584 Optimization of case expressions that build tuples or lists
have been improved.
OTP-11610 Some case statements where no clause would match could cause
an internal error in the compiler. (Thanks to Erik Soe
Sorensen for reporting this bug.)
OTP-11616 New data type - Maps, according to EEP 43, without variable
keys.
M0 = #{ a => 1, b => 2}, %% to create
M1 = M0#{ a := 10 }, %% to update
M2 = M1#{ "hi" => "hello"}, %% to add new associations
#{ "hi" := V1, a := V2, b := V3} = M2. %% to match keys with
values
See EEP43 for details.
--- cosEvent-2.1.15 -----------------------------------------------------
OTP-10907 The default encoding of Erlang files has been changed from
ISO-8859-1 to UTF-8.
The encoding of XML files has also been changed to UTF-8.
--- cosEventDomain-1.1.14 -----------------------------------------------
OTP-10907 The default encoding of Erlang files has been changed from
ISO-8859-1 to UTF-8.
The encoding of XML files has also been changed to UTF-8.
--- cosFileTransfer-1.1.16 ----------------------------------------------
OTP-10907 The default encoding of Erlang files has been changed from
ISO-8859-1 to UTF-8.
The encoding of XML files has also been changed to UTF-8.
--- cosNotification-1.1.21 ----------------------------------------------
OTP-10907 The default encoding of Erlang files has been changed from
ISO-8859-1 to UTF-8.
The encoding of XML files has also been changed to UTF-8.
--- cosProperty-1.1.17 --------------------------------------------------
OTP-10907 The default encoding of Erlang files has been changed from
ISO-8859-1 to UTF-8.
The encoding of XML files has also been changed to UTF-8.
--- cosTime-1.1.14 ------------------------------------------------------
OTP-10907 The default encoding of Erlang files has been changed from
ISO-8859-1 to UTF-8.
The encoding of XML files has also been changed to UTF-8.
--- cosTransactions-1.2.14 ----------------------------------------------
OTP-10907 The default encoding of Erlang files has been changed from
ISO-8859-1 to UTF-8.
The encoding of XML files has also been changed to UTF-8.
--- crypto-3.3 ----------------------------------------------------------
OTP-10907 The default encoding of Erlang files has been changed from
ISO-8859-1 to UTF-8.
The encoding of XML files has also been changed to UTF-8.
OTP-11258 By giving --enable-static-{nifs,drivers} to configure it is
now possible to statically linking of nifs and drivers to the
main Erlang VM binary. At the moment only the asn1 and crypto
nifs of the Erlang/OTP nifs and drivers have been prepared to
be statically linked. For more details see the Installation
Guide in the System documentation.
OTP-11522 Add IGE mode for AES cipher in crypto (Thanks to Yura
Beznos).
OTP-11550 Fix memory leaks and invalid deallocations in mod_pow,
mod_exp and generate_key(srp,...) when bad arguments are
passed. (Thanks to Florian Zumbiehi)
OTP-11578 Moved elliptic curve definition from the crypto NIF/OpenSSL
into Erlang code, adds the RFC-5639 brainpool curves and
makes TLS use them (RFC-7027). (Thanks to Andreas Schultz)
OTP-11609 Correction of the word 'ChipherText' throughout the
documentation (Thanks to Andrew Tunnell-Jones)
OTP-11619 Remove all obsolete application processes from crypto and
make it into a pure library application.
--- debugger-4.0 --------------------------------------------------------
OTP-10907 The default encoding of Erlang files has been changed from
ISO-8859-1 to UTF-8.
The encoding of XML files has also been changed to UTF-8.
OTP-10915 Removed gs based applications and gs based backends. The
observer application replaces the removed applications.
OTP-11553 The debugger now correctly evaluates code such as 'X = true
andalso X'. (Thanks to Anthony Ramine.)
--- dialyzer-2.7 --------------------------------------------------------
OTP-10397 Dialyzer will no longer emit warnings when inspecting or
modifying opaque types within the scope of a module.
Hitherto the shape of terms (tuple, list, etc.) has been used
to determine the opaque terms, but now the contracts are used
for decorating types with opaqueness.
OTP-10907 The default encoding of Erlang files has been changed from
ISO-8859-1 to UTF-8.
The encoding of XML files has also been changed to UTF-8.
OTP-10915 Removed gs based applications and gs based backends. The
observer application replaces the removed applications.
OTP-11186 Forbid unsized fields in patterns of binary generators and
simplified v3_core's translation of bit string generators.
(Thanks to Anthony Ramine.)
OTP-11616 New data type - Maps, according to EEP 43, without variable
keys.
M0 = #{ a => 1, b => 2}, %% to create
M1 = M0#{ a := 10 }, %% to update
M2 = M1#{ "hi" => "hello"}, %% to add new associations
#{ "hi" := V1, a := V2, b := V3} = M2. %% to match keys with
values
See EEP43 for details.
--- diameter-1.6 --------------------------------------------------------
OTP-10907 The default encoding of Erlang files has been changed from
ISO-8859-1 to UTF-8.
The encoding of XML files has also been changed to UTF-8.
OTP-11561 Add missing check at dictionary compilation.
In particular, that an AVP defined as having type Grouped in
an @avp_types section has a corresponding definition in a
@grouped section.
OTP-11583 Correct documentation on the setting of Origin-State-Id
It was incorrectly stated that the AVP would be set in an
outgoing DPR/DPA.
OTP-11593 Change interface for communicating outbound stream id to
diameter_sctp
The module uses the transport_data field of record
diameter_packet to communicate the stream on which the an
incoming message is received and on which an outgoing message
should be sent, the previous interface being that both are
communicated as a tuple of the form {stream, Id}. However,
since diameter retains the value of an incoming request's
transport_data unless the corresponding answer message
specifies otherwise, the behaviour in this case is to send an
answer on the outbound stream with the same identifier as the
that of the inbound stream on which the request was received.
If the inbound stream id is greater than or equal to the
number of outbound streams then this is guaranteed to fail,
causing the transport process in question to terminate. There
is no relationship between inbound and outbound stream
identifiers so diameter_sctp's imposition of one is simply
wrong.
Outbound stream ids are now communicated with a different
tuple: {outstream, Id}, interpreted modulo the number of
outbound streams. Thus, retention of an inbound request's
transport_data has no effect on the selection of an outbound
stream.
The change in interface is not strictly backwards compatible
because of the new atom for the outbound stream. However, as
there is currently no documented way of obtaining the
available number of outbound streams for a peer connection,
there is no way for a client to have known the range of ids
from which it could reliably have chosen with the previous
interface, so any setting of the outbound stream has probably
been unintentional. Not explicitly specifying an outbound
stream now results in a round-robin selection.
--- edoc-0.7.13 ---------------------------------------------------------
OTP-10907 The default encoding of Erlang files has been changed from
ISO-8859-1 to UTF-8.
The encoding of XML files has also been changed to UTF-8.
--- eldap-1.0.3 ---------------------------------------------------------
OTP-10907 The default encoding of Erlang files has been changed from
ISO-8859-1 to UTF-8.
The encoding of XML files has also been changed to UTF-8.
--- erl_docgen-0.3.5 ----------------------------------------------------
OTP-10907 The default encoding of Erlang files has been changed from
ISO-8859-1 to UTF-8.
The encoding of XML files has also been changed to UTF-8.
--- erl_interface-3.7.16 ------------------------------------------------
OTP-10907 The default encoding of Erlang files has been changed from
ISO-8859-1 to UTF-8.
The encoding of XML files has also been changed to UTF-8.
OTP-11608 Fix memcheck warning in gen_challange (Thanks to Olivier
Girondel)
--- erts-6.0 ------------------------------------------------------------
OTP-10285 Options to set match_limit and match_limit_recursion are
added to re:run. The option report_errors is also added to
get more information when re:run fails due to limits or
compilation errors.
OTP-10907 The default encoding of Erlang files has been changed from
ISO-8859-1 to UTF-8.
The encoding of XML files has also been changed to UTF-8.
OTP-10908 Dialyzer's unmatched_return warnings have been corrected.
OTP-11082 A common case is to wrap an argument to list_to_binary/1 in a
list to ensure conversion can happen even though the argument
may already be a binary. Take special care of this case and
do not copy binary.
Impact: May cause incompatibility since a single binary is no
longer copied. Use binary:copy/1,2 instead.
OTP-11105 Make erlang:open_port/2 spawn and spawn_executable handle
unicode.
OTP-11135 Handle unicode (widestring) in erl, erlc, heart, etc on
windows.
OTP-11204 The version of the PCRE library Used by Erlang's re module is
raised to 8.33 from 7.6. This means, among other things,
better Unicode and Unicode Character Properties support. New
options connected to PCRE 8.33 are also added to the re
module (ucd, notempty_atstart, no_start_optimize). PCRE has
extended the regular expression syntax between 7.6 and 8.33,
why this imposes a potential incompatibility. Only very
complicated regular expressions may be affected, but if you
know you are using obscure features, please test run your
regular expressions and verify that their behavior has not
changed.
OTP-11205 The option dupnames did not work as intended in re. When
looking for names with {capture, [Name, ...]}, re:run
returned a random instance of the match for that name,
instead of the leftmost matching instance, which was what the
documentation stated. This is now corrected to adhere to the
documentation. The option {capture,all_names} along with a
re:inspect/2 function is also added to further help in using
named subpatterns.
OTP-11248 Filenames containing UTF-8 encoded characters can now be
handled by erlc.
If you have set the ERLC_EMULATOR environment variable, note
that erlc in OTP 17 will only work with erl in OTP 17 since
the protocol between the erlc program and the erl_compile
module has changed.
OTP-11258 By giving --enable-static-{nifs,drivers} to configure it is
now possible to statically linking of nifs and drivers to the
main Erlang VM binary. At the moment only the asn1 and crypto
nifs of the Erlang/OTP nifs and drivers have been prepared to
be statically linked. For more details see the Installation
Guide in the System documentation.
OTP-11368 Add the {active,N} socket option for TCP, UDP, and SCTP,
where N is an integer in the range -32768..32767, to allow a
caller to specify the number of data messages to be delivered
to the controlling process. Once the socket's delivered
message count either reaches 0 or is explicitly set to 0 with
inet:setopts/2 or by including {active,0} as an option when
the socket is created, the socket transitions to passive
({active, false}) mode and the socket's controlling process
receives a message to inform it of the transition. TCP
sockets receive {tcp_passive,Socket}, UDP sockets receive
{udp_passive,Socket} and SCTP sockets receive
{sctp_passive,Socket}.
The socket's delivered message counter defaults to 0, but it
can be set using {active,N} via any gen_tcp, gen_udp, or
gen_sctp function that takes socket options as arguments, or
via inet:setopts/2. New N values are added to the socket's
current counter value, and negative numbers can be used to
reduce the counter value. Specifying a number that would
cause the socket's counter value to go above 32767 causes an
einval error. If a negative number is specified such that the
counter value would become negative, the socket's counter
value is set to 0 and the socket transitions to passive mode.
If the counter value is already 0 and inet:setopts(Socket,
[{active,0}]) is specified, the counter value remains at 0
but the appropriate passive mode transition message is
generated for the socket.
Thanks to Steve Vinoski
OTP-11385 A new optional scheduler utilization balancing mechanism has
been introduced. For more information see the +sub command
line argument.
Characteristics impact: None, when not enabled. When enabled,
changed timing in the system, normally a small overhead due
to measuring of utilization and calculating balancing
information. On some systems, such as old Windows systems,
the overhead can be quite substantial. This time measurement
overhead highly depend on the underlying primitives provided
by the OS.
OTP-11388 A call to either the garbage_collect/1 BIF or the
check_process_code/2 BIF may trigger garbage collection of
another processes than the process calling the BIF. The
previous implementations performed these kinds of garbage
collections without considering the internal state of the
process being garbage collected. In order to be able to more
easily and more efficiently implement yielding native code,
these types of garbage collections have been rewritten. A
garbage collection like this is now triggered by an
asynchronous request signal, the actual garbage collection is
performed by the process being garbage collected itself, and
finalized by a reply signal to the process issuing the
request. Using this approach processes can disable garbage
collection and yield without having to set up the heap in a
state that can be garbage collected.
The garbage_collect/2, and check_process_code/3 BIFs have
been introduced. Both taking an option list as last argument.
Using these, one can issue asynchronous requests.
code:purge/1 and code:soft_purge/1 have been rewritten to
utilize asynchronous check_process_code requests in order to
parallelize work.
Characteristics impact: A call to the garbage_collect/1 BIF
or the check_process_code/2 BIF will normally take longer
time to complete while the system as a whole wont be as much
negatively effected by the operation as before. A call to
code:purge/1 and code:soft_purge/1 may complete faster or
slower depending on the state of the system while the system
as a whole wont be as much negatively effected by the
operation as before.
OTP-11408 Allow loading of NIF library with unicode path name
OTP-11419 Cleanup 'Buckets' and 'Time left' fields in crashdump to ease
parsing.
OTP-11498 Add sync option to file:open/2.
The sync option adds the POSIX O_SYNC flag to the open system
call on platforms that support the flag or its equivalent,
e.g., FILE_FLAG_WRITE_THROUGH on Windows. For platforms that
don't support it, file:open/2 returns {error, enotsup} if the
sync option is passed in. Thank to Steve Vinoski and Joseph
Blomstedt
OTP-11535 erlang:binary_to_term will now cost an appropriate amount of
reductions and will interrupt (yield) for reschedule if the
term is big. This avoids too long schedules when
binary_to_term is used. (Thanks to Svante Karlsson for the
original patch)
Impact: Programs running binary_to_term on large binaries
will run more smoothly, but rescheduling will impact the
single process performance of the BIF. Single threaded
benchmarks might show degraded performance of the BIF, while
general system behaviour will be improved.
OTP-11549 Allow loading of driver with unicode path name
OTP-11558 Fixed a bug where starting Erlang without having an open
stdin on fd 0 would sometimes deadlock the emulator when
terminating.
OTP-11560 Added high resolution icon for windows. (Thanks to Daniel
Goertz for the inspiration.)
OTP-11565 The option '-names' in epmd now works on Windows (Thanks to
Johannes Weißl)
OTP-11577 Correction of the examples in escript documentation. (Thanks
to Pierre Fenoll).
OTP-11581 Fix bs_get_integer instruction
The instruction bs_get_integer could unnecessarily trigger a
garbage collection in failure cases which is unwanted or
outright dangerous.
Ex:
<<X:Sz,_/bits>> = <<"some binary">>
Previously, if Sz induced X to a bignum it would reserved
memory size this on the heap via a garbage collection before
checking if the size could actually match.
It will now check the binary size before triggering a
collection.
OTP-11585 Remove heap space overestimation in binary_to_term (and
remote message reception) for integers in the intervals
[-2147483648,-1] and [256,2147483647] on 64-bit emulators.
OTP-11590 Add support for detecting the separate tinfo library from
ncurses (Thanks to Dirkjan Ochtman)
OTP-11602 Deprecation warning for system_flag(cpu_topology) has been
extended for removal in OTP 18 (Thanks to Steve Vinoski for
the update)
OTP-11604 Migration of memory carriers has been enabled by default on
all ERTS internal memory allocators based on the alloc_util
framework except for temp_alloc. That is, +M<S>acul de is
default for these allocators. Note that this also implies
changed allocation strategies for all of these allocators.
They will all now use the "address order first fit carrier
best fit" strategy.
By passing +Muacul 0 on the command line, all configuration
changes made by this change will be reverted.
Characteristics impact: Improved memory characteristics with
a smaller memory footprint at the expense of a quite small
performance cost.
OTP-11607 Documentation improvement regarding some awkward wording
around the +spp flag. (Thanks to Brian L. Troutwine )
OTP-11611 A clarification has been added to the documentation of
-on_load() in the Reference Manual that it is only
recommended for loading NIF libraries.
OTP-11612 +fnaw is now default when starting the emulator; it used to
be +fnl.
OTP-11614 Fixed bug where sendfile would return the wrong error code
for a remotely closed socket if the socket was in passive
mode. (Thanks to Vincent Siliakus for reporting the bug.)
OTP-11616 New data type - Maps, according to EEP 43, without variable
keys.
M0 = #{ a => 1, b => 2}, %% to create
M1 = M0#{ a := 10 }, %% to update
M2 = M1#{ "hi" => "hello"}, %% to add new associations
#{ "hi" := V1, a := V2, b := V3} = M2. %% to match keys with
values
See EEP43 for details.
OTP-11617 Increase garbage collection tenure rate
The garbage collector tries to maintain the previous heap
block size during a minor gc, i.e. 'need' is not utilized in
determining the size of the new heap, instead it relies on
tenure and garbage to be sufficiently large.
In instances during intense growing with exclusively live
data on the heap coupled with delayed tenure, fullsweeps
would be triggered directly after a minor gc to make room for
'need' since the new heap would be full.
To remedy this, the tenure of terms on the minor heap will
always happen (if it is below the high watermark) instead of
every other minor gc.
Characteristics Impact: Reduced CPU-time spent in garbage
collection but may infer delays in collecting garbage from
the heap. Tweak 'fullsweep_after' options to increase gc
pressure if needed.
OTP-11618 Fix bug when comparing integers with floats larger than
2^992. The bug could potentially cause memory corruption on
32-bit emulators.
OTP-11628 The previously deprecated driver API function
driver_async_cancel() has been removed. Due to this, the
driver API version has been bumped to 3.0.
Thanks to Steve Vinoski.
OTP-11629 Experimental "dirty scheduler" functionality has been
introduced. In order to try the functionality out, you need
to pass the command line argument --enable-dirty-schedulers
to configure when building the system.
Dirty schedulers can currently only be used by NIFs on a
system with SMP support. More information can be found in the
erl_nif(3) documentation, the erl(1) documentation, and in
the git commit comment of commit
'c1c03ae4ee50e58b7669ea88ec4d29c6b2b67c7b'.
Note that the functionality is experimental, and not
supported. This functionality will be subject to backward
incompatible changes. You should not enable the dirty
scheduler functionality on production systems. It is only
provided for testing.
Thanks to Steve Vinoski.
OTP-11635 Cross-compilation fixes for TileraMDE-3.0.1.125620
OTP-11639 sendfile no longer uses async threads by default
This has been done because a slow client attack is possible
if the async thread pool is used. The scenario is:
Client does a request for a file and then slowly receives the
file one byte at a time. This will eventually fill the async
thread pool with blocking sendfile operations and thus
starving the vm of all file operations.
If you still want to use the async threads pool for sendfile
an option to enable it has been introduced.
Thanks to Christopher Faulet for identifying this
volnerability.
OTP-11648 Improve reduction cost and yielding of term_to_binary. The
reduction cost is increased and garbage collection is
disabled during yield.
Impact: Improves system responsiveness when term_to_binary is
called with large terms without significant degradation of
single threaded performance.
--- et-1.5 --------------------------------------------------------------
OTP-10907 The default encoding of Erlang files has been changed from
ISO-8859-1 to UTF-8.
The encoding of XML files has also been changed to UTF-8.
OTP-10915 Removed gs based applications and gs based backends. The
observer application replaces the removed applications.
--- eunit-2.2.7 ---------------------------------------------------------
OTP-10907 The default encoding of Erlang files has been changed from
ISO-8859-1 to UTF-8.
The encoding of XML files has also been changed to UTF-8.
--- gs-1.5.16 -----------------------------------------------------------
OTP-10907 The default encoding of Erlang files has been changed from
ISO-8859-1 to UTF-8.
The encoding of XML files has also been changed to UTF-8.
--- hipe-3.10.3 ---------------------------------------------------------
OTP-10907 The default encoding of Erlang files has been changed from
ISO-8859-1 to UTF-8.
The encoding of XML files has also been changed to UTF-8.
OTP-11564 Fix compilation with 'no_remove_comments' (Thanks to Johannes
Weißl)
OTP-11616 New data type - Maps, according to EEP 43, without variable
keys.
M0 = #{ a => 1, b => 2}, %% to create
M1 = M0#{ a := 10 }, %% to update
M2 = M1#{ "hi" => "hello"}, %% to add new associations
#{ "hi" := V1, a := V2, b := V3} = M2. %% to match keys with
values
See EEP43 for details.
--- ic-4.3.5 ------------------------------------------------------------
OTP-10907 The default encoding of Erlang files has been changed from
ISO-8859-1 to UTF-8.
The encoding of XML files has also been changed to UTF-8.
--- inets-5.10 ----------------------------------------------------------
OTP-10907 The default encoding of Erlang files has been changed from
ISO-8859-1 to UTF-8.
The encoding of XML files has also been changed to UTF-8.
OTP-11538 Fixed a spelling mistake in httpc doc (Thanks to Wasif Riaz
Malik)
--- jinterface-1.5.9 ----------------------------------------------------
OTP-10907 The default encoding of Erlang files has been changed from
ISO-8859-1 to UTF-8.
The encoding of XML files has also been changed to UTF-8.
--- kernel-3.0 ----------------------------------------------------------
OTP-10843 heart:set_cmd/1 is updated to allow unicode code points > 255
in the given heart command
OTP-10907 The default encoding of Erlang files has been changed from
ISO-8859-1 to UTF-8.
The encoding of XML files has also been changed to UTF-8.
OTP-10908 Dialyzer's unmatched_return warnings have been corrected.
OTP-11105 Make erlang:open_port/2 spawn and spawn_executable handle
unicode.
OTP-11368 Add the {active,N} socket option for TCP, UDP, and SCTP,
where N is an integer in the range -32768..32767, to allow a
caller to specify the number of data messages to be delivered
to the controlling process. Once the socket's delivered
message count either reaches 0 or is explicitly set to 0 with
inet:setopts/2 or by including {active,0} as an option when
the socket is created, the socket transitions to passive
({active, false}) mode and the socket's controlling process
receives a message to inform it of the transition. TCP
sockets receive {tcp_passive,Socket}, UDP sockets receive
{udp_passive,Socket} and SCTP sockets receive
{sctp_passive,Socket}.
The socket's delivered message counter defaults to 0, but it
can be set using {active,N} via any gen_tcp, gen_udp, or
gen_sctp function that takes socket options as arguments, or
via inet:setopts/2. New N values are added to the socket's
current counter value, and negative numbers can be used to
reduce the counter value. Specifying a number that would
cause the socket's counter value to go above 32767 causes an
einval error. If a negative number is specified such that the
counter value would become negative, the socket's counter
value is set to 0 and the socket transitions to passive mode.
If the counter value is already 0 and inet:setopts(Socket,
[{active,0}]) is specified, the counter value remains at 0
but the appropriate passive mode transition message is
generated for the socket.
Thanks to Steve Vinoski
OTP-11388 A call to either the garbage_collect/1 BIF or the
check_process_code/2 BIF may trigger garbage collection of
another processes than the process calling the BIF. The
previous implementations performed these kinds of garbage
collections without considering the internal state of the
process being garbage collected. In order to be able to more
easily and more efficiently implement yielding native code,
these types of garbage collections have been rewritten. A
garbage collection like this is now triggered by an
asynchronous request signal, the actual garbage collection is
performed by the process being garbage collected itself, and
finalized by a reply signal to the process issuing the
request. Using this approach processes can disable garbage
collection and yield without having to set up the heap in a
state that can be garbage collected.
The garbage_collect/2, and check_process_code/3 BIFs have
been introduced. Both taking an option list as last argument.
Using these, one can issue asynchronous requests.
code:purge/1 and code:soft_purge/1 have been rewritten to
utilize asynchronous check_process_code requests in order to
parallelize work.
Characteristics impact: A call to the garbage_collect/1 BIF
or the check_process_code/2 BIF will normally take longer
time to complete while the system as a whole wont be as much
negatively effected by the operation as before. A call to
code:purge/1 and code:soft_purge/1 may complete faster or
slower depending on the state of the system while the system
as a whole wont be as much negatively effected by the
operation as before.
OTP-11498 Add sync option to file:open/2.
The sync option adds the POSIX O_SYNC flag to the open system
call on platforms that support the flag or its equivalent,
e.g., FILE_FLAG_WRITE_THROUGH on Windows. For platforms that
don't support it, file:open/2 returns {error, enotsup} if the
sync option is passed in. Thank to Steve Vinoski and Joseph
Blomstedt
OTP-11614 Fixed bug where sendfile would return the wrong error code
for a remotely closed socket if the socket was in passive
mode. (Thanks to Vincent Siliakus for reporting the bug.)
--- megaco-3.17.0.3 -----------------------------------------------------
OTP-10907 The default encoding of Erlang files has been changed from
ISO-8859-1 to UTF-8.
The encoding of XML files has also been changed to UTF-8.
--- mnesia-4.12 ---------------------------------------------------------
OTP-10907 The default encoding of Erlang files has been changed from
ISO-8859-1 to UTF-8.
The encoding of XML files has also been changed to UTF-8.
OTP-11497 To prevent a race condition if there is a short communication
problem when node-down and node-up events are recevied. They
are now stored and later checked if the node came up just
before mnesia flagged the node as down. (Thanks to Jonas
Falkevik )
--- observer-2.0 --------------------------------------------------------
OTP-10907 The default encoding of Erlang files has been changed from
ISO-8859-1 to UTF-8.
The encoding of XML files has also been changed to UTF-8.
OTP-10915 Removed gs based applications and gs based backends. The
observer application replaces the removed applications.
OTP-11179 crashdump_viewer is re-written using wx.
OTP-11633 etop trace handler now works in smp environment (Thanks to
Péter Gömöri)
--- odbc-2.10.20 --------------------------------------------------------
OTP-10907 The default encoding of Erlang files has been changed from
ISO-8859-1 to UTF-8.
The encoding of XML files has also been changed to UTF-8.
OTP-11569 Removed warnings at compile time by adding missing include
file (Thanks to Anthony Ramine)
OTP-11630 Apple has removed iODBC in OS X 10.9 Mavericks, but forgot to
remove all binaries, adopt configure so that will be possible
to build odbc with own installation.
--- orber-3.6.27 --------------------------------------------------------
OTP-10907 The default encoding of Erlang files has been changed from
ISO-8859-1 to UTF-8.
The encoding of XML files has also been changed to UTF-8.
--- os_mon-2.2.15 -------------------------------------------------------
OTP-10842 Calls to erlang:open_port/2 with 'spawn' are updated to
handle space in the command path.
OTP-10907 The default encoding of Erlang files has been changed from
ISO-8859-1 to UTF-8.
The encoding of XML files has also been changed to UTF-8.
--- otp_mibs-1.0.9 ------------------------------------------------------
OTP-10907 The default encoding of Erlang files has been changed from
ISO-8859-1 to UTF-8.
The encoding of XML files has also been changed to UTF-8.
OTP-11203 Add type based integer value truncation/reset.
This fixes errors when querying e.g. the erlNodeReductions,
erlNodeInBytes and erlNodeOutBytes objects in long-running
Erlang/OTP systems.
Update types of applicable MIB objects to 64bit based types.
Potential incompatibility: Type change of Counter32 to
Counter64 in OTP-MIB.mib
--- parsetools-2.0.11 ---------------------------------------------------
OTP-10907 The default encoding of Erlang files has been changed from
ISO-8859-1 to UTF-8.
The encoding of XML files has also been changed to UTF-8.
--- percept-0.8.8.3 -----------------------------------------------------
OTP-10907 The default encoding of Erlang files has been changed from
ISO-8859-1 to UTF-8.
The encoding of XML files has also been changed to UTF-8.
--- public_key-0.22 -----------------------------------------------------
OTP-10907 The default encoding of Erlang files has been changed from
ISO-8859-1 to UTF-8.
The encoding of XML files has also been changed to UTF-8.
OTP-11578 Moved elliptic curve definition from the crypto NIF/OpenSSL
into Erlang code, adds the RFC-5639 brainpool curves and
makes TLS use them (RFC-7027). (Thanks to Andreas Schultz)
OTP-11627 Fix incorrect dialyzer spec and types, also enhance
documentation. (Thanks to Ayaz Tuncer.)
--- reltool-0.6.4.2 -----------------------------------------------------
OTP-10907 The default encoding of Erlang files has been changed from
ISO-8859-1 to UTF-8.
The encoding of XML files has also been changed to UTF-8.
OTP-11591 When adding a regexp to a filter in reltool using
{add,Regexp}, and the existing regexp was undefined, reltool
would crash since it got an improper list. This has been
corrected. (Thanks to Håkan Mattsson)
OTP-11592 Adapted reltool test server to common test usage of
tc_status. (Note that this code is not used by OTP daily test
runs.) (Thanks to Håkan Mattsson)
--- runtime_tools-1.8.14 ------------------------------------------------
OTP-10877 Allow install path to have unicode characters.
OTP-10907 The default encoding of Erlang files has been changed from
ISO-8859-1 to UTF-8.
The encoding of XML files has also been changed to UTF-8.
OTP-11603 The documentation for the return value of
dbg:{stop,stop_clear} functions are now correct (Thanks to
Luca Favatella)
OTP-11622 Fix DTrace build on Illumos. (Thanks to Ryan Zezeski.)
--- sasl-2.4 ------------------------------------------------------------
OTP-10842 Calls to erlang:open_port/2 with 'spawn' are updated to
handle space in the command path.
OTP-10907 The default encoding of Erlang files has been changed from
ISO-8859-1 to UTF-8.
The encoding of XML files has also been changed to UTF-8.
--- snmp-4.25.0.1 -------------------------------------------------------
OTP-10907 The default encoding of Erlang files has been changed from
ISO-8859-1 to UTF-8.
The encoding of XML files has also been changed to UTF-8.
--- ssh-3.0.1 -----------------------------------------------------------
OTP-10732 Fixes the problem that ssh_cli in some cases could delay the
prompt if a tty was not requested by the client.
OTP-10907 The default encoding of Erlang files has been changed from
ISO-8859-1 to UTF-8.
The encoding of XML files has also been changed to UTF-8.
OTP-10953 Ssh now fully supports unicode filenames, filecontents, shell
and cli. Please note that the underlying os and emulator must
also give support for unicode. You may want to start the
emulator with "erl +fnu" on Linux.
OTP-11566 The variable NewCol is now correctly calculated allowing for
tab-completion of function calls even when preceded with
blank space (Thanks to Alexander Demidenko)
OTP-11627 Fix incorrect dialyzer spec and types, also enhance
documentation. (Thanks to Ayaz Tuncer.)
--- ssl-5.3.4 -----------------------------------------------------------
OTP-10907 The default encoding of Erlang files has been changed from
ISO-8859-1 to UTF-8.
The encoding of XML files has also been changed to UTF-8.
OTP-11578 Moved elliptic curve definition from the crypto NIF/OpenSSL
into Erlang code, adds the RFC-5639 brainpool curves and
makes TLS use them (RFC-7027). (Thanks to Andreas Schultz)
OTP-11621 Added option honor_cipher_order. This instructs the server to
prefer its own cipher ordering rather than the client's and
can help protect against things like BEAST while maintaining
compatability with clients which only support older ciphers.
Thanks to Andrew Thompson for the implementation, and Andreas
Schultz for the test cases.
OTP-11627 Fix incorrect dialyzer spec and types, also enhance
documentation. (Thanks to Ayaz Tuncer.)
OTP-11634 Replace boolean checking in validate_option with is_boolean
guard. (Thanks to Andreas Schultz.)
--- stdlib-2.0 ----------------------------------------------------------
OTP-10285 Options to set match_limit and match_limit_recursion are
added to re:run. The option report_errors is also added to
get more information when re:run fails due to limits or
compilation errors.
OTP-10842 Calls to erlang:open_port/2 with 'spawn' are updated to
handle space in the command path.
OTP-10907 The default encoding of Erlang files has been changed from
ISO-8859-1 to UTF-8.
The encoding of XML files has also been changed to UTF-8.
OTP-10908 Dialyzer's unmatched_return warnings have been corrected.
OTP-11186 Forbid unsized fields in patterns of binary generators and
simplified v3_core's translation of bit string generators.
(Thanks to Anthony Ramine.)
OTP-11204 The version of the PCRE library Used by Erlang's re module is
raised to 8.33 from 7.6. This means, among other things,
better Unicode and Unicode Character Properties support. New
options connected to PCRE 8.33 are also added to the re
module (ucd, notempty_atstart, no_start_optimize). PCRE has
extended the regular expression syntax between 7.6 and 8.33,
why this imposes a potential incompatibility. Only very
complicated regular expressions may be affected, but if you
know you are using obscure features, please test run your
regular expressions and verify that their behavior has not
changed.
OTP-11205 The option dupnames did not work as intended in re. When
looking for names with {capture, [Name, ...]}, re:run
returned a random instance of the match for that name,
instead of the leftmost matching instance, which was what the
documentation stated. This is now corrected to adhere to the
documentation. The option {capture,all_names} along with a
re:inspect/2 function is also added to further help in using
named subpatterns.
OTP-11353 Added dict:is_empty/1 and orddict:is_empty/1. (Thanks to
Magnus Henoch.)
OTP-11388 A call to either the garbage_collect/1 BIF or the
check_process_code/2 BIF may trigger garbage collection of
another processes than the process calling the BIF. The
previous implementations performed these kinds of garbage
collections without considering the internal state of the
process being garbage collected. In order to be able to more
easily and more efficiently implement yielding native code,
these types of garbage collections have been rewritten. A
garbage collection like this is now triggered by an
asynchronous request signal, the actual garbage collection is
performed by the process being garbage collected itself, and
finalized by a reply signal to the process issuing the
request. Using this approach processes can disable garbage
collection and yield without having to set up the heap in a
state that can be garbage collected.
The garbage_collect/2, and check_process_code/3 BIFs have
been introduced. Both taking an option list as last argument.
Using these, one can issue asynchronous requests.
code:purge/1 and code:soft_purge/1 have been rewritten to
utilize asynchronous check_process_code requests in order to
parallelize work.
Characteristics impact: A call to the garbage_collect/1 BIF
or the check_process_code/2 BIF will normally take longer
time to complete while the system as a whole wont be as much
negatively effected by the operation as before. A call to
code:purge/1 and code:soft_purge/1 may complete faster or
slower depending on the state of the system while the system
as a whole wont be as much negatively effected by the
operation as before.
OTP-11552 orddict:from_list/1 now uses the optimized sort routines in
the lists module instead of (essentially) an insertion sort.
Depending on the input data, the speed of the new from_list/1
is anything from slightly faster up to several orders of
magnitude faster than the old from_list/1. (Thanks to Steve
Vinoski.)
OTP-11589 If option 'binary' was set for standard_input, then c:i()
would hang if the output was more than one page long - i.e.
then input after "(c)ontinue (q)uit -->" could not be read.
This has been corrected. (Thanks to José Valim)
OTP-11616 New data type - Maps, according to EEP 43, without variable
keys.
M0 = #{ a => 1, b => 2}, %% to create
M1 = M0#{ a := 10 }, %% to update
M2 = M1#{ "hi" => "hello"}, %% to add new associations
#{ "hi" := V1, a := V2, b := V3} = M2. %% to match keys with
values
See EEP43 for details.
--- syntax_tools-1.6.14 -------------------------------------------------
OTP-10907 The default encoding of Erlang files has been changed from
ISO-8859-1 to UTF-8.
The encoding of XML files has also been changed to UTF-8.
OTP-11632 Add implementation of having erl_tidy print to screen instead
of writing to the file provided. (Thanks to Aaron France)
--- test_server-3.7 -----------------------------------------------------
OTP-10842 Calls to erlang:open_port/2 with 'spawn' are updated to
handle space in the command path.
OTP-10907 The default encoding of Erlang files has been changed from
ISO-8859-1 to UTF-8.
The encoding of XML files has also been changed to UTF-8.
--- tools-2.6.14 --------------------------------------------------------
OTP-10907 The default encoding of Erlang files has been changed from
ISO-8859-1 to UTF-8.
The encoding of XML files has also been changed to UTF-8.
OTP-11568 Removed the support for the query keyword from emacs mode
(Thanks to Paul Oliver)
OTP-11601 Emacs mode improvements (Thanks to Steve Vinoski)
--- typer-0.9.6 ---------------------------------------------------------
OTP-11616 New data type - Maps, according to EEP 43, without variable
keys.
M0 = #{ a => 1, b => 2}, %% to create
M1 = M0#{ a := 10 }, %% to update
M2 = M1#{ "hi" => "hello"}, %% to add new associations
#{ "hi" := V1, a := V2, b := V3} = M2. %% to match keys with
values
See EEP43 for details.
--- webtool-0.8.10 ------------------------------------------------------
OTP-10907 The default encoding of Erlang files has been changed from
ISO-8859-1 to UTF-8.
The encoding of XML files has also been changed to UTF-8.
--- wx-1.2 --------------------------------------------------------------
OTP-11586 Refactored C++ code, fixed crashes and a deadlock on linux.
--- xmerl-1.3.7 ---------------------------------------------------------
OTP-10907 The default encoding of Erlang files has been changed from
ISO-8859-1 to UTF-8.
The encoding of XML files has also been changed to UTF-8.