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Peter Lemenkov 042c33880e Ver. R16B 
Signed-off-by: Peter Lemenkov <lemenkov@gmail.com>
2013-03-01 23:35:58 +04:00

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Major release : otp_src_R16B
Build date : 2013-02-25
R16B is a major new release of Erlang/OTP.
You can download the full source distribution from
http://www.erlang.org/download/otp_src_R16B.tar.gz
http://www.erlang.org/download/otp_src_R16B.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_R16B.exe
http://www.erlang.org/download/otp_win64_R16B.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_R16B.tar.gz
http://www.erlang.org/download/otp_doc_man_R16B.tar.gz
We also want to thank those that sent us patches, suggestions and bug reports,
The OTP Team
--- HIGHLIGHTS ----------------------------------------------------------
OTP-7786 == ssh ==
Added User Guide for the SSH application
OTP-9892 == erts ==
Process optimizations. The most notable:
-- New internal process table implementation allowing for
both parallel reads as well as writes. Especially read
operations have become really cheap. This reduce contention
in various situations. For example when, spawning processes,
terminating processes, sending messages, etc.
-- Optimizations of run queue management reducing contention.
-- Optimizations of process state changes reducing
contention.
These changes imply changes of the characteristics the
system. Most notable: changed timing in the system.
OTP-9974 == erts ==
Non-blocking code loading. Earlier when an Erlang module was
loaded, all other execution in the VM were halted while the
load operation was carried out in single threaded mode. Now
modules are loaded without blocking the VM. Processes may
continue executing undisturbed in parallel during the entire
load operation. The load operation is completed by making the
loaded code visible to all processes in a consistent way with
one single atomic instruction. Non-blocking code loading will
improve realtime characteristics when modules are
loaded/upgraded on a running SMP system.
OTP-10256 == inets ==
httpc: The HTTP client now supports HTTPS through proxies
OTP-10336 == erts ==
Major port improvements. The most notable:
-- New internal port table implementation allowing for both
parallel reads as well as writes. Especially read operations
have become really cheap.This reduce contention in various
situations. For example when, creating ports, terminating
ports, etc.
-- Dynamic allocation of port structures. This allow for a
much larger maximum amount of ports allowed as a default. The
previous default of 1024 has been raised to 65536. Maximum
amount of ports can be set using the +Q command line flag of
erl(1). The previously used environment variable
ERL_MAX_PORTS has been deprecated and scheduled for removal
in OTP-R17.
-- Major rewrite of scheduling of port tasks. Major benefits
of the rewrite are reduced contention on run queue locks, and
reduced amount of memory allocation operations needed. The
rewrite was also necessary in order to make it possible to
schedule signals from processes to ports.
-- Improved internal thread progress functionality for easy
management of unmanaged threads. This improvement was
necessary for the rewrite of the port task scheduling.
-- Rewrite of all process to port signal implementations in
order to make it possible to schedule those operations. All
port operations can now be scheduled which allows for reduced
lock contention on the port lock as well as truly
asynchronous communication with ports.
-- Optimized lookup of port handles from drivers.
-- Optimized driver lookup when creating ports.
-- Preemptable erlang:ports/0 BIF.
-- Improving responsiveness by bumping reductions for a
process calling a driver callback directly.
These changes imply changes of the characteristics of the
system. The most notable:
-- Order of signal delivery -- The previous implementation of
the VM has delivered signals from processes to ports in a
synchronous stricter fashion than required by the language.
As of ERTS version 5.10, signals are truly asynchronously
delivered. The order of signal delivery still adheres to the
requirements of the language, but only to the requirements.
That is, some signal sequences that previously always were
delivered in one specific order may now from time to time be
delivered in different orders. This may cause Erlang programs
that have made false assumptions about signal delivery order
to fail even though they previously succeeded. For more
information about signal ordering guarantees, see the chapter
on communication in the ERTS user's guide. The +n command
line flag of erl(1) can be helpful when trying to find
signaling order bugs in Erlang code that have been exposed by
these changes.
-- Latency of signals sent from processes to ports -- Signals
from processes to ports where previously always delivered
immediately. This kept latency for such communication to a
minimum, but it could cause lock contention which was very
expensive for the system as a whole. In order to keep this
latency low also in the future, most signals from processes
to ports are by default still delivered immediately as long
as no conflicts occur. Such conflicts include not being able
to acquire the port lock, but also include other conflicts.
When a conflict occur, the signal will be scheduled for
delivery at a later time. A scheduled signal delivery may
cause a higher latency for this specific communication, but
improves the overall performance of the system since it
reduce lock contention between schedulers. The default
behavior of only scheduling delivery of these signals on
conflict can be changed by passing the +spp command line flag
to erl(1). The behavior can also be changed on port basis
using the parallelism option of the open_port/2 BIF.
-- Execution time of the erlang:ports/0 BIF -- Since
erlang:ports/0 now can be preempted, the responsiveness of
the system as a whole has been improved. A call to
erlang:ports/0 may, however, take a much longer time to
complete than before. How much longer time heavily depends on
the system load.
-- Reduction cost of calling driver callbacks -- Calling a
driver callback is quite costly. This was previously not
reflected in reduction cost at all. Since the reduction cost
now has increased, a process performing lots of direct driver
calls will be scheduled out more frequently than before.
Potential incompatibilities:
-- driver_send_term() has been deprecated and has been
scheduled for removal in OTP-R17. Replace usage of
driver_send_term() with usage of erl_drv_send_term().
-- driver_output_term() has been deprecated and has been
scheduled for removal in OTP-R17. Replace usage of
driver_output_term() with usage of erl_drv_output_term().
-- The new function erl_drv_busy_msgq_limits() has been added
in order to able to control management of port queues.
The driver API version has been bumped to 2.1 from 2.0 due to
the above changes in the driver API.
OTP-10410 == asn1 ==
The options for the ASN.1 compiler has been drastically
simplified. The backend is chosen by using ber, per, or uper.
The options optimize, nif, and driver are no longer needed.
The old options will still work, but will issue a warning.
Another change is that generated encode/2 function will
always return a binary (some backends used to return an
iolist).
OTP-10588 == asn1 ==
The ASN.1 compiler will now always include necessary run-time
functions in the generated Erlang modules (except for
asn1rt_nif which is still neeeded). If the option 'inline' is
used the ASN.1 compiler will generate a warning. But if
'{inline,OutputFile}' is use, the ASN.1 compiler will refuse
to compile the file. (Use a .set.asn file if you need to
remove the output file.)
The 'BIT STRING' type will now be decoded as Erlang
bitstrings by default. Use the new legacy_bit_string option
to encode as lists of ones and zeroes. (The
compact_bit_string option still works as before.)
Open types are now always returned as binaries (when there is
no information allowing them to be decoded).
--- POTENTIAL INCOMPATIBILITIES -----------------------------------------
OTP-9052 == common_test ==
Removed depricated run_test program, use ct_run instead.
OTP-9881 == common_test ==
It is now possible to let a test specification include other
test specifications. Included specs can either be joined with
the source spec (and all other joined specs), resulting in
one single test run, or they can be executed in separate test
runs. Also, a start flag/option, join_specs, has been
introduced, to be used in combination with the spec option.
With join_specs, Common Test can be told to either join
multiple test specifications, or run them separately. Without
join_specs, the latter behaviour is default. Note that this
is a change compared to earlier versions of Common Test,
where specifications could only be joined. More information
can be found in the Running Tests chapter in the User's Guide
(see the Test Specifications section).
OTP-10117 == inviso ==
The inviso application has been removed.
OTP-10170 == erts pman ==
Tuple funs (deprecated in R15B) are no longer supported.
OTP-10195 == edoc ==
Since EDoc 0.7.7 (R14B02) separate values of union types can
be annotated. However, the parser has hitherto chosen not to
add the necessary parentheses due to backwards compatibility.
From this release on code traversing the output of
edoc_parser needs to take care of parentheses around separate
values of union types. Examples of such code are layout
modules and doclet modules.
OTP-10336 == erts ==
Major port improvements. The most notable:
-- New internal port table implementation allowing for both
parallel reads as well as writes. Especially read operations
have become really cheap.This reduce contention in various
situations. For example when, creating ports, terminating
ports, etc.
-- Dynamic allocation of port structures. This allow for a
much larger maximum amount of ports allowed as a default. The
previous default of 1024 has been raised to 65536. Maximum
amount of ports can be set using the +Q command line flag of
erl(1). The previously used environment variable
ERL_MAX_PORTS has been deprecated and scheduled for removal
in OTP-R17.
-- Major rewrite of scheduling of port tasks. Major benefits
of the rewrite are reduced contention on run queue locks, and
reduced amount of memory allocation operations needed. The
rewrite was also necessary in order to make it possible to
schedule signals from processes to ports.
-- Improved internal thread progress functionality for easy
management of unmanaged threads. This improvement was
necessary for the rewrite of the port task scheduling.
-- Rewrite of all process to port signal implementations in
order to make it possible to schedule those operations. All
port operations can now be scheduled which allows for reduced
lock contention on the port lock as well as truly
asynchronous communication with ports.
-- Optimized lookup of port handles from drivers.
-- Optimized driver lookup when creating ports.
-- Preemptable erlang:ports/0 BIF.
-- Improving responsiveness by bumping reductions for a
process calling a driver callback directly.
These changes imply changes of the characteristics of the
system. The most notable:
-- Order of signal delivery -- The previous implementation of
the VM has delivered signals from processes to ports in a
synchronous stricter fashion than required by the language.
As of ERTS version 5.10, signals are truly asynchronously
delivered. The order of signal delivery still adheres to the
requirements of the language, but only to the requirements.
That is, some signal sequences that previously always were
delivered in one specific order may now from time to time be
delivered in different orders. This may cause Erlang programs
that have made false assumptions about signal delivery order
to fail even though they previously succeeded. For more
information about signal ordering guarantees, see the chapter
on communication in the ERTS user's guide. The +n command
line flag of erl(1) can be helpful when trying to find
signaling order bugs in Erlang code that have been exposed by
these changes.
-- Latency of signals sent from processes to ports -- Signals
from processes to ports where previously always delivered
immediately. This kept latency for such communication to a
minimum, but it could cause lock contention which was very
expensive for the system as a whole. In order to keep this
latency low also in the future, most signals from processes
to ports are by default still delivered immediately as long
as no conflicts occur. Such conflicts include not being able
to acquire the port lock, but also include other conflicts.
When a conflict occur, the signal will be scheduled for
delivery at a later time. A scheduled signal delivery may
cause a higher latency for this specific communication, but
improves the overall performance of the system since it
reduce lock contention between schedulers. The default
behavior of only scheduling delivery of these signals on
conflict can be changed by passing the +spp command line flag
to erl(1). The behavior can also be changed on port basis
using the parallelism option of the open_port/2 BIF.
-- Execution time of the erlang:ports/0 BIF -- Since
erlang:ports/0 now can be preempted, the responsiveness of
the system as a whole has been improved. A call to
erlang:ports/0 may, however, take a much longer time to
complete than before. How much longer time heavily depends on
the system load.
-- Reduction cost of calling driver callbacks -- Calling a
driver callback is quite costly. This was previously not
reflected in reduction cost at all. Since the reduction cost
now has increased, a process performing lots of direct driver
calls will be scheduled out more frequently than before.
Potential incompatibilities:
-- driver_send_term() has been deprecated and has been
scheduled for removal in OTP-R17. Replace usage of
driver_send_term() with usage of erl_drv_send_term().
-- driver_output_term() has been deprecated and has been
scheduled for removal in OTP-R17. Replace usage of
driver_output_term() with usage of erl_drv_output_term().
-- The new function erl_drv_busy_msgq_limits() has been added
in order to able to control management of port queues.
The driver API version has been bumped to 2.1 from 2.0 due to
the above changes in the driver API.
OTP-10410 == asn1 ==
The options for the ASN.1 compiler has been drastically
simplified. The backend is chosen by using ber, per, or uper.
The options optimize, nif, and driver are no longer needed.
The old options will still work, but will issue a warning.
Another change is that generated encode/2 function will
always return a binary (some backends used to return an
iolist).
OTP-10417 == kernel sasl ==
It is no longer possible to have {Mod,Vsn} in the 'modules'
list in a .app file.
This was earlier possible, although never documented in the
.app file reference manual. It was however visible in the
documentation of application:load/[1,2], where the same term
as in a .app file can be used as the first argument.
The possibility has been removed since the Vsn part was never
used.
OTP-10451 == ssl ==
Remove filter mechanisms that made error messages backwards
compatible with old ssl but hid information about what
actually happened.
This does not break the documented API however other reason
terms may be returned, so code that matches on the reason
part of {error, Reason} may fail.
OTP-10490 == stdlib ==
If a child process fails in its start function, then the
error reason was earlier only reported as an error report
from the error_handler, and supervisor:start_link would only
return {error,shutdown}. This has been changed so the
supervisor will now return {error,{shutdown,Reason}}, where
Reason identifies the failing child and its error reason.
(Thanks to Tomas Pihl)
OTP-10523 == tools ==
A new function, cover:flush(Nodes), is added which will fetch
data from remote nodes without stopping cover on those nodes.
This is used by test_server and common_test when it is safe
to assume that the node will be terminated after the test
anyway. The purpose is to avoid processes crashing when
re-loading the original beam if the processes is still
running old code.
Remote nodes will now continue to count code coverage if the
connection to the main node is broken. Earlier, a broken
connection would cause the cover_server on the remote node to
die and thus any still cover compiled modules would cause
process crash when trying to insert cover data in ets tables
that used to exist on the cover_server. The new functionality
also involves synchronization with the main node if the nodes
are reconnected.
OTP-10588 == asn1 ==
The ASN.1 compiler will now always include necessary run-time
functions in the generated Erlang modules (except for
asn1rt_nif which is still neeeded). If the option 'inline' is
used the ASN.1 compiler will generate a warning. But if
'{inline,OutputFile}' is use, the ASN.1 compiler will refuse
to compile the file. (Use a .set.asn file if you need to
remove the output file.)
The 'BIT STRING' type will now be decoded as Erlang
bitstrings by default. Use the new legacy_bit_string option
to encode as lists of ones and zeroes. (The
compact_bit_string option still works as before.)
Open types are now always returned as binaries (when there is
no information allowing them to be decoded).
OTP-10613 == ssl ==
Removed deprecated function ssl:pid/0, it has been pointless
since R14 but has been keep for backwards compatibility.
OTP-10633 == erts ==
Erlang specification 4.7.3 defines max tuple size to 65535
elements It is now enforced to no more than 16777215 elements
(arity 24 bits)
Previous edge cases (28 bits) were not validated and could
cause undefined behaviour.
OTP-10647 == erts ==
The previous default of a maximum of 32768 simultaneous
processes has been raised to 262144. This value can be
changed using the the +P command line flag of erl(1). Note
that the value passed now is considered as a hint, and that
actual value chosen in most cases will be a power of two.
OTP-10812 == stdlib ==
filelib:wildcard("some/relative/path/*.beam", Path) would
fail to match any file. That is, filelib:wildcard/2 would not
work if the first component of the pattern did not contain
any wildcard characters. (A previous attempt to fix the
problem in R15B02 seems to have made matters worse.)
(Thanks to Samuel Rivas and Tuncer Ayaz.)
There is also an incompatible change to the Path argument. It
is no longer allowed to be a binary.
OTP-10872 == erts ==
As of ERTS-5.10/OTP-R16A node names passed in the EPMD
protocol are required to be encoded in UTF-8. Since EPMD
previously accepted latin1 encoded node names this is an
incompatibility. However, since Erlang nodes always have
required characters in node names to be 7-bit ASCII
characters (and still do require this), this incompatibility
should not effect anyone using EPMD as an Erlang Port Mapper
Daemon.
--- CHARACTERISTICS IMPACT -----------------------------------------------
OTP-9892 == erts ==
Process optimizations. The most notable:
-- New internal process table implementation allowing for
both parallel reads as well as writes. Especially read
operations have become really cheap. This reduce contention
in various situations. For example when, spawning processes,
terminating processes, sending messages, etc.
-- Optimizations of run queue management reducing contention.
-- Optimizations of process state changes reducing
contention.
These changes imply changes of the characteristics the
system. Most notable: changed timing in the system.
OTP-9974 == erts ==
Non-blocking code loading. Earlier when an Erlang module was
loaded, all other execution in the VM were halted while the
load operation was carried out in single threaded mode. Now
modules are loaded without blocking the VM. Processes may
continue executing undisturbed in parallel during the entire
load operation. The load operation is completed by making the
loaded code visible to all processes in a consistent way with
one single atomic instruction. Non-blocking code loading will
improve realtime characteristics when modules are
loaded/upgraded on a running SMP system.
OTP-10122 == erts ==
In the SMP emulator, turning on and off tracing will no
longer take down the system to single-scheduling.
OTP-10167 == erts ==
Optimized deletion of ETS-tables which significantly improves
performance when large amounts of temporary tables are used.
This change imply changes of the characteristics the system.
Most notable: changed timing in the system.
OTP-10273 == erts ==
New internal header scheme for allocators
Impact: Reduces size on object allocated in multiblock
carriers by one word
OTP-10336 == erts ==
Major port improvements.
These changes imply changes of the characteristics of the
system. The most notable:
-- Order of signal delivery -- The previous implementation of
the VM has delivered signals from processes to ports in a
synchronous stricter fashion than required by the language.
As of ERTS version 5.10, signals are truly asynchronously
delivered. The order of signal delivery still adheres to the
requirements of the language, but only to the requirements.
That is, some signal sequences that previously always were
delivered in one specific order may now from time to time be
delivered in different orders. This may cause Erlang programs
that have made false assumptions about signal delivery order
to fail even though they previously succeeded. For more
information about signal ordering guarantees, see the chapter
on communication in the ERTS user's guide. The +n command
line flag of erl(1) can be helpful when trying to find
signaling order bugs in Erlang code that have been exposed by
these changes.
-- Latency of signals sent from processes to ports -- Signals
from processes to ports where previously always delivered
immediately. This kept latency for such communication to a
minimum, but it could cause lock contention which was very
expensive for the system as a whole. In order to keep this
latency low also in the future, most signals from processes
to ports are by default still delivered immediately as long
as no conflicts occur. Such conflicts include not being able
to acquire the port lock, but also include other conflicts.
When a conflict occur, the signal will be scheduled for
delivery at a later time. A scheduled signal delivery may
cause a higher latency for this specific communication, but
improves the overall performance of the system since it
reduce lock contention between schedulers. The default
behavior of only scheduling delivery of these signals on
conflict can be changed by passing the +spp command line flag
to erl(1). The behavior can also be changed on port basis
using the parallelism option of the open_port/2 BIF.
-- Execution time of the erlang:ports/0 BIF -- Since
erlang:ports/0 now can be preempted, the responsiveness of
the system as a whole has been improved. A call to
erlang:ports/0 may, however, take a much longer time to
complete than before. How much longer time heavily depends on
the system load.
-- Reduction cost of calling driver callbacks -- Calling a
driver callback is quite costly. This was previously not
reflected in reduction cost at all. Since the reduction cost
now has increased, a process performing lots of direct driver
calls will be scheduled out more frequently than before.
OTP-10661 == erts ==
The previously (in R15) proposed scheduler wakeup strategy is
now used by default. This strategy is not as quick to forget
about previous overload as the previous strategy.
This change imply changes of the characteristics the system.
Most notable: When a small overload comes and then disappears
repeatedly, the system will for a bit longer time be willing
to wake up schedulers than before. Timing in the system will
due to this also change.
The previous strategy can still be enabled by passing the
+sws legacy command line flag to erl.
OTP-10736 == erts ==
The runtime system will now by default use 10 async threads
if thread support has been enabled when building the runtime
system.
This will prevent long blocking file-operations from blocking
scheduler threads for long periods of time, which can be
harmful. Apart from file-operations, it also effects other
operations scheduled on the async thread pool by user
implemented drivers.
The amount of async threads can be controlled by using the +A
command line argument of erl(1). When running some offline
tools you might want to disable async threads, but you are
advised not to in the general case. Instead, you might want
to increase the amount of async threads used.
This change imply changes of the characteristics the system
compared to the previous default. The responsiveness of the
system as a whole will be improved. Operations scheduled on
the async thread pool will get an increased latency. The
throughput of these operations may increase, or decrease
depending on the type of the operations and how they get
scheduled. In the case of file operations, the throughput
very much depends on how the Erlang application access files.
Multiple concurrent accesses to different files have the
potential of an increased throughput.
OTP-10737 == erts ==
The default reader group limit has been increased to 64 from
8. This limit can be set using the +rg command line argument
of erl(1).
This change of default value will reduce lock contention on
ETS tables using the read_concurrency option at the expense
of memory consumption when the amount of schedulers and
logical processors are beween 8 and 64. For more information,
see documentation of the +rg command line argument of erl(1).
OTP-10787 == erts ==
Increased potential concurrency in ETS for write_concurrency
option. The number of internal table locks has increased from
16 to 64. This makes it four times less likely that two
concurrent processes writing to the same table would collide
and thereby serialized. The cost is an increased constant
memory footprint for tables using write_concurrency. The
memory consumption per inserted record is not affected. The
increased footprint can be particularly large if
write_concurrency is combined with read_concurrency.
OTP-10519 == asn1 ==
The ASN.1 compiler generates faster decode functions for PER
and UPER. Some minor improvements have also been made for
PER/UPER encoding, and to the BER backend.
OTP-10506 == odbc ==
Under Unix enable TCP_NODELAY to disable Nagel's socket
algorithm. Thanks to Andy Richards
Impact: Performance gain on Unix systems
OTP-10361 == ssl ==
Support Next Protocol Negotiation in TLS, thanks to Ben
Murphy for the contribution.
Impact: Could give performance benefit if used as it saves a
round trip.
OTP-10425 == ssl ==
TLS 1.2 will now be the default TLS version if sufficient
crypto support is available otherwise TLS 1.1 will be
default.
Impact: A default TLS connection will have higher security
and hence it may be perceived as slower then before.
OTP-10710 == ssl ==
Now handles cleaning of CA-certificate database correctly so
that there will be no memory leek, bug was introduced in ssl-
5.1 when changing implementation to increase parallel
execution.
Impact: Improved memory usage, especially if you have many
different certificates and upgrade tcp-connections to
TLS-connections.
--- inviso --------------------------------------------------------------
OTP-10117 The inviso application has been removed.
--- otp -----------------------------------------------------------------
OTP-9684 Most specs for built in functions now reside in their
respective module instead of being coded in the erl_bif_types
module of the Hipe application. This creatyes a single source
for specifications and documentation, which should radically
lessen the risk for differences between the docs and the
actual spec seen by dialyzer.
OTP-9862 Many types and specifications that used to reside in
erl_bif_types have been moved into respective module.
OTP-10616 The experimental feature "parameterized modules" (also called
"abstract modules") has been removed. For applications that
depends on parameterized modules, there is a parse transform
that can be used to still use parameterized modules. The
parse transform can be found at:
github.com/erlang/pmod_transform
OTP-10726 Implement ./otp_build configure --enable-silent-rules
With silent rules, the output of make is less verbose and
compilation warnings are easier to spot. Silent rules are
disabled by default and can be disabled or enabled at will by
make V=0 and make V=1. (Thanks to Anthony Ramine)
--- appmon-2.1.14.2 -----------------------------------------------------
OTP-10784 Misc build updates
OTP-10786 The backend module appmon_info.erl is moved from appmon
application to runtime_tools. This allows appmon to be run
from a remote erlang node towards a target node which does
not have appmon (and its dependencies) installed, as long as
runtime_tools is installed there.
--- asn1-2.0 ------------------------------------------------------------
OTP-10410 The options for the ASN.1 compiler has been drastically
simplified. The backend is chosen by using ber, per, or uper.
The options optimize, nif, and driver are no longer needed.
The old options will still work, but will issue a warning.
Another change is that generated encode/2 function will
always return a binary (some backends used to return an
iolist).
OTP-10519 The ASN.1 compiler generates faster decode functions for PER
and UPER. Some minor improvements have also been made for
PER/UPER encoding, and to the BER backend.
OTP-10588 The ASN.1 compiler will now always include necessary run-time
functions in the generated Erlang modules (except for
asn1rt_nif which is still neeeded). If the option 'inline' is
used the ASN.1 compiler will generate a warning. But if
'{inline,OutputFile}' is use, the ASN.1 compiler will refuse
to compile the file. (Use a .set.asn file if you need to
remove the output file.)
The 'BIT STRING' type will now be decoded as Erlang
bitstrings by default. Use the new legacy_bit_string option
to encode as lists of ones and zeroes. (The
compact_bit_string option still works as before.)
Open types are now always returned as binaries (when there is
no information allowing them to be decoded).
OTP-10664 Encoding SEQUENCEs with multiple extension addition groups
with optional values could fail (depending both on the
specification and whether all values were provided).
--- asn1-2.0.1 ----------------------------------------------------------
OTP-10853 Fixed broken table constraints within a SET OF or SEQUENCE OF
for the BER backend.
--- common_test-1.7 -----------------------------------------------------
OTP-9769 Severe errors detected by test_server (e.g. if log files
directories cannot be created) will now be reported to
common_test and noted in the common_test logs.
OTP-9870 The earlier undocumented cross cover feature for accumulating
cover data over multiple tests has now been fixed and
documented.
OTP-9881 It is now possible to let a test specification include other
test specifications. Included specs can either be joined with
the source spec (and all other joined specs), resulting in
one single test run, or they can be executed in separate test
runs. Also, a start flag/option, join_specs, has been
introduced, to be used in combination with the spec option.
With join_specs, Common Test can be told to either join
multiple test specifications, or run them separately. Without
join_specs, the latter behaviour is default. Note that this
is a change compared to earlier versions of Common Test,
where specifications could only be joined. More information
can be found in the Running Tests chapter in the User's Guide
(see the Test Specifications section).
OTP-10040 If a busy test case generated lots of error messages,
cth_log_redirect:post_end_per_testcase would crash with a
timeout while waiting for the error logger to finish handling
all error reports. The default timer was 5 seconds. This has
now been extended to 5 minutes.
OTP-10070 When a test case failed because of a timetrap time out, the
Config data for the case was lost in the following call to
end_per_testcase/2, and also in calls to the CT Hook function
post_end_per_testcase/4. This problem has been solved and the
Config data is now correctly passed to the above functions
after a timetrap timeout failure.
OTP-10088 Some calls to deprecated and removed functions in snmp are
removed from ct_snmp.
OTP-10101 In test_server, the same process would supervise the
currently running test case and be group leader (and IO
server) for the test case. Furthermore, when running parallel
test cases, new temporary supervisor/group leader processes
were spawned and the process that was group leader for
sequential test cases would not be active. That would lead to
several problems:
* Processes started by init_per_suite will inherit the group
leader of the init_per_suite process (and that group leader
would not process IO requests when parallel test cases was
running). If later a parallel test case caused such a
processto print using (for example) io:format/2, the calling
would hang.
* Similarly, if a process was spawned from a parallel test
case, it would inherit the temporary group leader for that
parallel test case. If that spawned process later - when the
group of parallel tests have finished - attempted to print
something, its group leader would be dead and there would be
badarg exception.
Those problems have been solved by having group leaders
separate from the processes that supervises the test cases,
and keeping temporary group leader process for parallel test
cases alive until no more process in the system use them as
group leaders.
Also, a new unexpected_io.log log file (reachable from the
summary page of each test suite) has been introduced. All
unexpected IO will be printed into it(for example, IO to a
group leader for a parallel test case that has finished).
OTP-10432 Some bugfixes in ct_snmp:
-- ct_snmp will now use the value of the 'agent_vsns' config
variable when setting the 'variables' parameter to snmp
application agent configuration. Earlier this had to be done
separately - i.e. the supported versions had to be specified
twice.
-- Snmp application failed to write notify.conf since ct_snmp
gave the notify type as a string instead of an atom. This has
been corrected.
OTP-10434 Some bugfixes in ct_snmp:
-- Functions register_users/2, register_agents/2 and
register_usm_users/2, and the corresponding unregister_*/1
functions were not executable. These are corrected/rewritten.
-- Function update_usm_users/2 is removed, and an unregister
function is added instead. Update can now be done with
unregister_usm_users and then register_usm_users.
-- Functions unregister_*/2 are added, so specific
users/agents/usm users can be unregistered.
-- Function unload_mibs/1 is added for completeness.
-- Overriding configuration files did not work, since the
files were written in priv_dir instead of in the
configuration dir (priv_dir/conf). This has been corrected.
-- Arguments to register_usm_users/2 were faulty documented.
This has been corrected.
OTP-10469 The ct_slave:start/3 function now supports an
{env,[{Var,Value}]} option to extend environment for the
slave node.
OTP-10601 Faulty exported specs in common test has been corrected to
ct_netconfc:hook_options/0 and inet:hostname/0
OTP-10646 The netconf client in common_test did not adjust the window
after receiving data. Due to this, the client stopped
receiving data after a while. This has been corrected.
OTP-10665 Some examples overflowing the width of PDF pages have been
corrected.
OTP-10783 Update common test modules to handle unicode
-- Use UTF-8 encoding for all HTML files, except the HTML
version of the test suite generated with erl2html2:convert,
which will have the same encoding as the original test suite
(.erl) file.
-- Encode link targets in HTML files with
test_server_ctrl:uri_encode/1.
-- Use unicode modifier 't' with ~s when appropriate.
-- Use unicode:characters_to_list and
unicode:characters_to_binary for conversion between binaries
and strings instead of binary_to_list and list_to_binary.
--- common_test-1.7.1 ---------------------------------------------------
OTP-9052 Removed depricated run_test program, use ct_run instead.
OTP-10634 If an event handler installed in the CT Master event manager
took too long to respond during the termination phase, CT
Master crashed because of a timeout after 5 secs. This would
leave the system in a bad state. The problem has been solved
by means of a 30 min timeout value and if CT Master gets a
timeout after that time, it now kills the event manager and
shuts down properly.
OTP-10826 Printing with any of the ct printout functions from an event
handler installed by Common Test, would cause a deadlock.
This problem has been solved.
OTP-10832 Using the force_stop flag/option to interrupt a test run
caused a crash in Common Test. This problem has been solved.
--- compiler-4.9 --------------------------------------------------------
OTP-10193 The compiler optimizations have been polished, so that the
code quality will be slightly better in some cases.
OTP-10302 Support for Unicode has been implemented.
OTP-10630 Where necessary a comment stating encoding has been added to
Erlang files. The comment is meant to be removed in
Erlang/OTP R17B when UTF-8 becomes the default encoding.
OTP-10690 Fix some wrong warnings triggered by the option
inline_list_funcs. Thanks to Anthony Ramine.
OTP-10706 Forbid local fun variables in Core Erlang guards. Thanks to
Anthony Ramine.
OTP-10724 Binary syntax matches could cause an internal consistency
error in in the compiler. (Thanks to Viktor Sovietov for
reporting this bug.)
--- compiler-4.9.1 ------------------------------------------------------
OTP-10788 Integers in expression that will give a floating point result
(such as "X / 2" will now be converted to floating point at
compile-time. (Suggested by Richard O'Keefe.)
Identical floating points constans in a module will now be
coalesced to one entry in the constant pool.
OTP-10794 The compiler would crash attempting to compile expressions
such as "element(2, not_tuple)".
OTP-10818 Forbid multiple values in Core Erlang sequence arguments.
Thanks to José Valim and Anthony Ramine.
OTP-10825 An unsafe optimization would cause the compiler to crash with
an internal error for certain complex code sequences.
--- cosEvent-2.1.13 -----------------------------------------------------
OTP-10784 Misc build updates
--- cosEventDomain-1.1.13 -----------------------------------------------
OTP-10784 Misc build updates
--- cosFileTransfer-1.1.14 ----------------------------------------------
OTP-10784 Misc build updates
--- cosNotification-1.1.19 ----------------------------------------------
OTP-10784 Misc build updates
--- cosProperty-1.1.16 --------------------------------------------------
OTP-10784 Misc build updates
--- cosTime-1.1.13 ------------------------------------------------------
OTP-10784 Misc build updates
--- cosTransactions-1.2.13 ----------------------------------------------
OTP-10784 Misc build updates
--- crypto-2.3 ----------------------------------------------------------
OTP-10596 Enable runtime upgrade of crypto including the OpenSSL
library used by crypto.
OTP-10640 Improve documentation and tests for hmac functions in crypto.
Thanks to Daniel White
OTP-10667 Added ripemd160 support to crypto. Thanks to Michael Loftis
--- debugger-3.2.9 ------------------------------------------------------
OTP-10302 Support for Unicode has been implemented.
OTP-10621 Fix Debugger settings dialog due to changed behavior in
wxFileDialog (Thanks to H<>kan Mattsson)
OTP-10630 Where necessary a comment stating encoding has been added to
Erlang files. The comment is meant to be removed in
Erlang/OTP R17B when UTF-8 becomes the default encoding.
OTP-10679 Integer lists and utf-8 binaries in variables are now
displayed as strings.
--- debugger-3.2.10 -----------------------------------------------------
OTP-10884 The +pc flag to erl can be used to set the range of
characters considered printable. This affects how the shell
and io:format("~tp",...) functionality does heuristic string
detection. More can be read in STDLIB users guide.
--- dialyzer-2.5.4 ------------------------------------------------------
OTP-10302 Support for Unicode has been implemented.
OTP-10433 Dialyzer no longer outputs warnings for unused anonymous
functions ("funs"). Warnings are still output for unused
functions.
OTP-10630 Where necessary a comment stating encoding has been added to
Erlang files. The comment is meant to be removed in
Erlang/OTP R17B when UTF-8 becomes the default encoding.
OTP-10665 Some examples overflowing the width of PDF pages have been
corrected.
OTP-10681 Fix precision of record creation violation warnings. Thanks
to Stavros Aronis
OTP-10740 Report spec discrepancy on mismatching lists. Thanks to
Stavros Aronis.
OTP-10772 Properly support functions with arbitrary arity in type
specs. Thanks to Stavros Aronis.
--- dialyzer-2.6 --------------------------------------------------------
OTP-10820 Miscellaneous updates due to Unicode support.
OTP-10861 User defined types with same name and different arity and
documentation inconsistencies. Thanks Stavros Aronis.
OTP-10865 Native code compilation changes. Thanks to Kostis Sagonas.
--- diameter-1.4 --------------------------------------------------------
OTP-10442 Add registered server names to the app file.
OTP-10609 Fix #diameter_header{} handling broken by OTP-10445.
The fault caused the the header of a [Header | Avps] request
to be ignored if both end_to_end_id and hop_by_hop_id were
undefined.
OTP-10614 Fix error handling for handle_request callback.
A callback that returned a #diameter_packet{} would fail if
the incoming request had decode errors.
OTP-10618 Fix timing of service start event.
The event did not necessarily precede other events as
documented.
OTP-10619 Fix setting of header T flag at peer failover.
The flag is now set in the diameter_header record passed to a
prepare_retransmit callback.
OTP-10628 Fix sending of CER/CEA timeout event at capx_timeout.
The event was not sent as documented.
OTP-10655 Fix improper setting of Application-ID in the Diameter header
of an answer message whose E flag is set.
The value should be that of the request in question. The
fault caused it always to be 0.
OTP-10693 Fix faulty handling of AVP length errors.
An incorrect AVP length but no other errors caused an
incoming request to fail.
--- diameter-1.4.1 ------------------------------------------------------
OTP-10686 Add application_opt() request_errors to make the handling of
incoming requests containing decode errors configurable.
The value 'callback' ensures that a handle_request callback
takes place for all such requests, the default being for
diameter to answer 3xxx series errors itself.
OTP-10687 Add transport_opt() length_errors.
The value determines how messages received over the transport
interface with an incorrect Message Length are dealt with.
OTP-10688 Add commentary on RFC 6733 to Standards Compliance chapter of
the User's Guide.
OTP-10692 Fix erroneous watchdog transition from DOWN to INITIAL.
This transition took place when a peer connection was
reestablished following a failed capabilities exchange. RFC
3539 requires DOWN to transition into REOPEN.
OTP-10759 Allow a 5xxx result code in an answer-message on peer
connections using the RFC 6733 common dictionary.
RFC 6733 allows this while RFC 3588 does not. A
handle_request callback can return {answer_message,
3000..3999|5000..5999} in the simplest case.
OTP-10760 Add dictionaries for RFC 6733.
Both the common and accounting dictionaries differ from their
RFC 3588 counterparts, which is reflected in generated record
definitions. Application configuration on a service or
transport determines the dictionary that will be used on a
given peer connection.
OTP-10761 Allow a handle_request callback to control diameter's setting
of Result-Code and Failed-AVP.
Setting errors = false in a returned #diameter_packet{}
disables the setting.
--- edoc-0.7.11 ---------------------------------------------------------
OTP-10195 Since EDoc 0.7.7 (R14B02) separate values of union types can
be annotated. However, the parser has hitherto chosen not to
add the necessary parentheses due to backwards compatibility.
From this release on code traversing the output of
edoc_parser needs to take care of parentheses around separate
values of union types. Examples of such code are layout
modules and doclet modules.
OTP-10302 Support for Unicode has been implemented.
OTP-10630 Where necessary a comment stating encoding has been added to
Erlang files. The comment is meant to be removed in
Erlang/OTP R17B when UTF-8 becomes the default encoding.
--- edoc-0.7.12 ---------------------------------------------------------
OTP-10820 Miscellaneous updates due to Unicode support.
OTP-10866 EDoc sometimes failed to associate a comment with the
preceding type declaration. This bug has been fixed. (Thanks
to Serge Aleynikov for reporting the bug.)
--- eldap-1.0.1 ---------------------------------------------------------
OTP-10403 Fixed various dialyzer warnings
OTP-10728 Configure the SSL options fully in eldap.
--- erl_docgen-0.3.4 ----------------------------------------------------
OTP-10302 Support for Unicode has been implemented.
OTP-10630 Where necessary a comment stating encoding has been added to
Erlang files. The comment is meant to be removed in
Erlang/OTP R17B when UTF-8 becomes the default encoding.
OTP-10665 Some examples overflowing the width of PDF pages have been
corrected.
OTP-10725 Correct a PDF indentation bug for tagged lists in tagged
lists and added some missing tags to the DTD.
--- erl_interface-3.7.10 ------------------------------------------------
OTP-10630 Where necessary a comment stating encoding has been added to
Erlang files. The comment is meant to be removed in
Erlang/OTP R17B when UTF-8 becomes the default encoding.
OTP-10753 Limited support for unicode atoms in the external format and
in the internal representation of the vm. This is a
preparative feature in order to support communication with
future releases of Erlang/OTP that may create unicode atoms.
--- erl_interface-3.7.11 ------------------------------------------------
OTP-10885 Revert the structs erlang_pid, erlang_port and erlang_ref as
they were before R16A (without node_org_enc) in order to be
backward compatible with user code that accesses the fields
of these structs.
--- erts-5.10 -----------------------------------------------------------
OTP-8928 A boolean socket option 'ipv6_v6only' for IPv6 sockets has
been added. The default value of the option is OS dependent,
so applications aiming to be portable should consider using
{ipv6_v6only,true} when creating an inet6
listening/destination socket, and if neccesary also create an
inet socket on the same port for IPv4 traffic. See the
documentation.
OTP-9861 It is now allowed to define stubs for BIFs, to allow type
specs to be written for BIFs. For example, if there is BIF
called lists:member/2, a dummy definition of lists:member/2
is now allowed.
OTP-9892 Process optimizations. The most notable:
-- New internal process table implementation allowing for
both parallel reads as well as writes. Especially read
operations have become really cheap. This reduce contention
in various situations. For example when, spawning processes,
terminating processes, sending messages, etc.
-- Optimizations of run queue management reducing contention.
-- Optimizations of process state changes reducing
contention.
These changes imply changes of the characteristics the
system. Most notable: changed timing in the system.
OTP-9974 Non-blocking code loading. Earlier when an Erlang module was
loaded, all other execution in the VM were halted while the
load operation was carried out in single threaded mode. Now
modules are loaded without blocking the VM. Processes may
continue executing undisturbed in parallel during the entire
load operation. The load operation is completed by making the
loaded code visible to all processes in a consistent way with
one single atomic instruction. Non-blocking code loading will
improve realtime characteristics when modules are
loaded/upgraded on a running SMP system.
OTP-10122 In the SMP emulator, turning on and off tracing will no
longer take down the system to single-scheduling.
OTP-10146 Remove VxWorks support
OTP-10156 Added a general framework for executing benchmarks of
Erlang/OTP. Benchmarks for the Erlang VM and mnesia have been
incorporated in the framework.
For details about how to add more benchmarks see
$ERL_TOP/HOWTO/BENCHMARKS.md in the source distribution.
OTP-10167 Optimized deletion of ETS-tables which significantly improves
performance when large amounts of temporary tables are used.
This change imply changes of the characteristics the system.
Most notable: changed timing in the system.
OTP-10170 Tuple funs (deprecated in R15B) are no longer supported.
OTP-10273 New internal header scheme for allocators
Impact: Reduces size on object allocated in multiblock
carriers by one word
OTP-10336 Major port improvements. The most notable:
-- New internal port table implementation allowing for both
parallel reads as well as writes. Especially read operations
have become really cheap.This reduce contention in various
situations. For example when, creating ports, terminating
ports, etc.
-- Dynamic allocation of port structures. This allow for a
much larger maximum amount of ports allowed as a default. The
previous default of 1024 has been raised to 65536. Maximum
amount of ports can be set using the +Q command line flag of
erl(1). The previously used environment variable
ERL_MAX_PORTS has been deprecated and scheduled for removal
in OTP-R17.
-- Major rewrite of scheduling of port tasks. Major benefits
of the rewrite are reduced contention on run queue locks, and
reduced amount of memory allocation operations needed. The
rewrite was also necessary in order to make it possible to
schedule signals from processes to ports.
-- Improved internal thread progress functionality for easy
management of unmanaged threads. This improvement was
necessary for the rewrite of the port task scheduling.
-- Rewrite of all process to port signal implementations in
order to make it possible to schedule those operations. All
port operations can now be scheduled which allows for reduced
lock contention on the port lock as well as truly
asynchronous communication with ports.
-- Optimized lookup of port handles from drivers.
-- Optimized driver lookup when creating ports.
-- Preemptable erlang:ports/0 BIF.
-- Improving responsiveness by bumping reductions for a
process calling a driver callback directly.
These changes imply changes of the characteristics of the
system. The most notable:
-- Order of signal delivery -- The previous implementation of
the VM has delivered signals from processes to ports in a
synchronous stricter fashion than required by the language.
As of ERTS version 5.10, signals are truly asynchronously
delivered. The order of signal delivery still adheres to the
requirements of the language, but only to the requirements.
That is, some signal sequences that previously always were
delivered in one specific order may now from time to time be
delivered in different orders. This may cause Erlang programs
that have made false assumptions about signal delivery order
to fail even though they previously succeeded. For more
information about signal ordering guarantees, see the chapter
on communication in the ERTS user's guide. The +n command
line flag of erl(1) can be helpful when trying to find
signaling order bugs in Erlang code that have been exposed by
these changes.
-- Latency of signals sent from processes to ports -- Signals
from processes to ports where previously always delivered
immediately. This kept latency for such communication to a
minimum, but it could cause lock contention which was very
expensive for the system as a whole. In order to keep this
latency low also in the future, most signals from processes
to ports are by default still delivered immediately as long
as no conflicts occur. Such conflicts include not being able
to acquire the port lock, but also include other conflicts.
When a conflict occur, the signal will be scheduled for
delivery at a later time. A scheduled signal delivery may
cause a higher latency for this specific communication, but
improves the overall performance of the system since it
reduce lock contention between schedulers. The default
behavior of only scheduling delivery of these signals on
conflict can be changed by passing the +spp command line flag
to erl(1). The behavior can also be changed on port basis
using the parallelism option of the open_port/2 BIF.
-- Execution time of the erlang:ports/0 BIF -- Since
erlang:ports/0 now can be preempted, the responsiveness of
the system as a whole has been improved. A call to
erlang:ports/0 may, however, take a much longer time to
complete than before. How much longer time heavily depends on
the system load.
-- Reduction cost of calling driver callbacks -- Calling a
driver callback is quite costly. This was previously not
reflected in reduction cost at all. Since the reduction cost
now has increased, a process performing lots of direct driver
calls will be scheduled out more frequently than before.
Potential incompatibilities:
-- driver_send_term() has been deprecated and has been
scheduled for removal in OTP-R17. Replace usage of
driver_send_term() with usage of erl_drv_send_term().
-- driver_output_term() has been deprecated and has been
scheduled for removal in OTP-R17. Replace usage of
driver_output_term() with usage of erl_drv_output_term().
-- The new function erl_drv_busy_msgq_limits() has been added
in order to able to control management of port queues.
The driver API version has been bumped to 2.1 from 2.0 due to
the above changes in the driver API.
OTP-10348 The experimental support for packages has been removed.
OTP-10491 Set new peeled off SCTP socket to nonblocking socket (Thanks
to Jonas Falkevik)
OTP-10522 Wrong parameters when setting seq_trace-tokens from within a
trace-pattern could crash the VM. This is now corrected.
OTP-10611 Fix various typos (thanks to Tuncer Ayaz)
OTP-10633 Erlang specification 4.7.3 defines max tuple size to 65535
elements It is now enforced to no more than 16777215 elements
(arity 24 bits)
Previous edge cases (28 bits) were not validated and could
cause undefined behaviour.
OTP-10643 Add insert_element/3 and delete_element/2
OTP-10647 The previous default of a maximum of 32768 simultaneous
processes has been raised to 262144. This value can be
changed using the the +P command line flag of erl(1). Note
that the value passed now is considered as a hint, and that
actual value chosen in most cases will be a power of two.
OTP-10661 The previously (in R15) proposed scheduler wakeup strategy is
now used by default. This strategy is not as quick to forget
about previous overload as the previous strategy.
This change imply changes of the characteristics the system.
Most notable: When a small overload comes and then disappears
repeatedly, the system will for a bit longer time be willing
to wake up schedulers than before. Timing in the system will
due to this also change.
The previous strategy can still be enabled by passing the
+sws legacy command line flag to erl.
OTP-10668 The +stbt command line argument of erl was added. This
argument can be used for trying to set scheduler bind type.
Upon failure unbound schedulers will be used.
OTP-10677 Fix fd leak when using async thread pool
When using the async thread pool, if an erlang process asks
to open a file and it gets shutdown/killed while the
file:open/2 call hasn't returned, it's possible to leak a
file descriptor against the target file. This has now been
fixed. (Thanks to Filipe David Manana)
OTP-10678 Support ANSI in console
Unix platforms will no longer filter control sequences to the
ttsl driver thus enabling ANSI and colors in console. (Thanks
to Pedram Nimreezi)
OTP-10680 Add file:allocate/3 operation
This operation allows pre-allocation of space for files. It
succeeds only on systems that support such operation. (Thanks
to Filipe David Manana)
OTP-10683 Treat -Wreturn-type warnings as error when using GCC (Thanks
to Tuncer Ayaz)
OTP-10699 Use sys/types.h instead of string.h to pull ssize_t
definition to erl_driver.h. This fixes build issue on NetBSD.
(Thanks to Yamamoto Takashi).
OTP-10702 Arguments given with the -run or -s flags to erl are now
translated according to the file name encoding mode of the
runtime system.
OTP-10726 Implement ./otp_build configure --enable-silent-rules
With silent rules, the output of make is less verbose and
compilation warnings are easier to spot. Silent rules are
disabled by default and can be disabled or enabled at will by
make V=0 and make V=1. (Thanks to Anthony Ramine)
OTP-10727 Use share flags for all file operations on Windows. Thanks to
Filipe David Borba Manana.
OTP-10733 Make/fakefop adjustments. Thanks to Tuncer Ayaz and Sebastian
Rasmussen.
OTP-10736 The runtime system will now by default use 10 async threads
if thread support has been enabled when building the runtime
system.
This will prevent long blocking file-operations from blocking
scheduler threads for long periods of time, which can be
harmful. Apart from file-operations, it also effects other
operations scheduled on the async thread pool by user
implemented drivers.
The amount of async threads can be controlled by using the +A
command line argument of erl(1). When running some offline
tools you might want to disable async threads, but you are
advised not to in the general case. Instead, you might want
to increase the amount of async threads used.
This change imply changes of the characteristics the system
compared to the previous default. The responsiveness of the
system as a whole will be improved. Operations scheduled on
the async thread pool will get an increased latency. The
throughput of these operations may increase, or decrease
depending on the type of the operations and how they get
scheduled. In the case of file operations, the throughput
very much depends on how the Erlang application access files.
Multiple concurrent accesses to different files have the
potential of an increased throughput.
OTP-10737 The default reader group limit has been increased to 64 from
8. This limit can be set using the +rg command line argument
of erl(1).
This change of default value will reduce lock contention on
ETS tables using the read_concurrency option at the expense
of memory consumption when the amount of schedulers and
logical processors are beween 8 and 64. For more information,
see documentation of the +rg command line argument of erl(1).
OTP-10746 The octet counters in the gen_tcp/inet interface could behave
in unexpected ways on 64bit platforms. The behaviour is now
as expected.
OTP-10747 Certain linux kernels, most notably in redhat and CentOS
distribution, had a bug in writev which generated an infinite
loop in the tcp code of the VM. The bug is now worked around.
OTP-10748 A process that got killed (got an exit signal) while
operating on a compresseed file, could cause a segmentation
fault in the VM. This is now corrected. Thanks to Filipe
David Manana for identifying the problem and submitting a
solution.
OTP-10751 Windows previously used three digit exponent in formatting
which caused difference between platforms, as can be seen by
float_to_list/1. This has now been fixed.
OTP-10752 New BIF float_to_list/2 which solves a problem of
float_to_list/1 that doesn't allow specifying the number of
digits after the decimal point when formatting floats (Thanks
to Serge Aleynikov).
OTP-10753 Limited support for unicode atoms in the external format and
in the internal representation of the vm. This is a
preparative feature in order to support communication with
future releases of Erlang/OTP that may create unicode atoms.
OTP-10787 Increased potential concurrency in ETS for write_concurrency
option. The number of internal table locks has increased from
16 to 64. This makes it four times less likely that two
concurrent processes writing to the same table would collide
and thereby serialized. The cost is an increased constant
memory footprint for tables using write_concurrency. The
memory consumption per inserted record is not affected. The
increased footprint can be particularly large if
write_concurrency is combined with read_concurrency.
--- erts-5.10.1 ---------------------------------------------------------
OTP-10170 Tuple funs (deprecated in R15B) are no longer supported.
OTP-10300 Added four new bifs, erlang:binary_to_integer/1,2,
erlang:integer_to_binary/1, erlang:binary_to_float/1 and
erlang:float_to_binary/1,2. These bifs work similarly to how
their list counterparts work, except they operate on
binaries. In most cases converting from and to binaries is
faster than converting from and to lists.
These bifs are auto-imported into erlang source files and can
therefore be used without the erlang prefix.
OTP-10348 The experimental support for packages has been removed.
OTP-10802 Threads created internally in the runtime system by vanilla,
fd, and spawn drivers on Windows systems could make thread
unsafe calls to driver_select().
OTP-10803 Threads created internally in the runtime system by the
vanilla, fd, and spawn drivers on Windows systems could make
unsafe memory accesses to driver data after port had
terminated.
OTP-10807 The runtime system could crash when flushing data to standard
out or standard error on Windows.
OTP-10809 Bugs due to the port optimizations introduced in
erts-5.10/OTP-R16A have been fixed:
-- Memory leak when terminating ports
-- Memory leak when reaching the system limit of maximum
amount of concurrently existing ports
-- Crashs due to missing, or late test of bad port handle
-- The newly introduced driver API function
erl_drv_busy_msgq_limits() could not be used by dynamically
linked in drivers on Windows
OTP-10810 The driver API function erl_drv_consume_timeslice(), and the
NIF API function enif_consume_timeslice() have been
introduced.
These functions are provided in order to better support
co-operative scheduling, improve system responsiveness, and
to make it easier to prevent misbehaviors of the VM due to a
process or port monopolizing a scheduler thread. They can be
used when dividing lengthy work into a number of repeated
calls without the need to use threads.
OTP-10824 Fix {packet,httph} header capitalization for unrecognized
header fields longer than 20 charachters such as
Sec-Websocket-Version. The limit is simply raised from 20 to
50 characters with the hope that valid headers longer than 50
are not used.
OTP-10834 The list_to_integer/2 bif has been optimized when used with
bases other than 10.
OTP-10837 Fix rounding issues in float_to_list/1,2. Thanks to Serge
Aleynikov
OTP-10838 The git commit sha of the HEAD commit is now added to the
Erlang shell when compiling a non-released Erlang version.
OTP-10840 Change caching policy for memory segment allocator. For
instance, prefer sbc segments over mbc segments, caching
policy is time-arrow aware, evicting older cached segments to
store newer segments.
The default number of cachable segment has been increased
from five to ten segments. This can be modified, same as
before, with the command line option +MMmcs 5
Impact: Increased speed for processing on larger objects,
e.g. binaries. Slight increase of mapped and resident memory.
Tune your system with memory options to erl for best
performance.
OTP-10841 Fix memory leak in file driver introduced in R16A.
OTP-10848 Updated config.sub and config.guess to latest version from
gnu.org
OTP-10849 Add an xcomp file for Blue Gene/Q. Thanks to Kostis Sagonas.
OTP-10850 Cleanup of documentation of the type language. Thanks to
Kostis Sagonas.
OTP-10851 Change the return value of hipe_bifs:remove_refs_from/1.
Thanks to Kostis Sagonas.
OTP-10854 A bug in an ERTS internal queue implementation could cause
the loss of a wake up signal to a consumer thread. This has
now been fixed.
The effect of this bug, when triggered, was often only a
small or even no delay of certain operations. This since,
threads often are woken due to other unrelated reasons.
However, if the consumer thread was not woken due to other
reasons when the bug was triggered, these operations could be
left hanging, potentially for ever. Such effects seems to
have been very rare, but we have on at least one occasion
gotten a report about such an issue.
Operations potentially effected by this bug:
-- Inspection of memory allocation status -- The Erlang
process calling erlang:memory/[0,1], or
erlang:system_info({allocator|allocator_sizes, _}) could
potentially hang waiting for responses from involved threads.
-- Async thread pool jobs -- An async thread pool job request
and/or reply could potentially be left hanging. In OTP this
only effected file operations, but user implemented drivers
using the async thread pool were also effected. In the file
operation case, this would typically translate into an Erlang
process potentially hanging on the file operation.
-- Shutting down the runtime system -- Due to the issue with
the async thread pool mentioned above, flushing of I/O while
terminating the runtime system could also potentially hang.
-- ETS memory deallocation -- Scheduled jobs handling
deallocation of the main structure of an ETS table could
potentially hang. This more or less only translates into
minor memory leaks.
-- Shutting down distribution -- The distribution shutdown
phase used when manually shutting down the distribution,
i.e., when calling net_kernel:stop(), could potentially hang.
OTP-10858 OS X Snow Leopard now only uses write, as writev does not
work properly on very large files.
OTP-10859 Fixed a bug where line oriented file I/O using read_ahead was
very slow for files with very large difference in line
length.
OTP-10860 In erts-5.10 (R16A) faulty hashvalues were produced for
non-ASCII atoms (characters in byte-range 128..255). This has
now been fixed and hashvalues conforms to previous OTP
releases.
OTP-10872 As of ERTS-5.10/OTP-R16A node names passed in the EPMD
protocol are required to be encoded in UTF-8. Since EPMD
previously accepted latin1 encoded node names this is an
incompatibility. However, since Erlang nodes always have
required characters in node names to be 7-bit ASCII
characters (and still do require this), this incompatibility
should not effect anyone using EPMD as an Erlang Port Mapper
Daemon.
OTP-10875 Fixes of memory accesses that might be thread unsafe when the
runtime system has been linked against third-party libraries
for atomic memory operations during the build. Most builds
are uneffected by this bug. If triggered, the runtime system
will most likely crash more or less immediately.
OTP-10881 Fixed a bug where it was longer possible to give the +sws
proposal flag to non-smp emulators.
OTP-10884 The +pc flag to erl can be used to set the range of
characters considered printable. This affects how the shell
and io:format("~tp",...) functionality does heuristic string
detection. More can be read in STDLIB users guide.
OTP-10887 Fix a number of type cast errors related to formatted
printing on Win64 that can potentially cause problem when the
Erlang VM exceeds 4 GB of ram. (Thanks to Blaine Whittle for
the original patch)
OTP-10890 Faulty type to bytes read for ReadFile on Windows. This could
cause windows systems to misbehave. The correct type is now
used.
OTP-10892 Change default max ports for Windows to 8192. Having a too
large value caused Windows to not be able to recover
properly. If you want to use another value, pass +Q Value to
erl or werl.
OTP-10895 The effect of the deprecated environment variable
ERL_MAX_PORTS had been removed premeturely. It has now been
readded. Note that this is still scheduled to be released in
R17B.
OTP-10896 Fix rare crash on halfword vm during code loading.
--- et-1.4.4.3 ----------------------------------------------------------
OTP-10630 Where necessary a comment stating encoding has been added to
Erlang files. The comment is meant to be removed in
Erlang/OTP R17B when UTF-8 becomes the default encoding.
--- eunit-2.2.4 ---------------------------------------------------------
OTP-10630 Where necessary a comment stating encoding has been added to
Erlang files. The comment is meant to be removed in
Erlang/OTP R17B when UTF-8 becomes the default encoding.
--- gs-1.5.15.2 ---------------------------------------------------------
OTP-10630 Where necessary a comment stating encoding has been added to
Erlang files. The comment is meant to be removed in
Erlang/OTP R17B when UTF-8 becomes the default encoding.
--- hipe-3.10 -----------------------------------------------------------
OTP-10302 Support for Unicode has been implemented.
OTP-10624 The type ascii_string() in the base64 module has been
corrected. The type file:file_info() has been cleaned up. The
type file:fd() has been made opaque in the documentation.
OTP-10630 Where necessary a comment stating encoding has been added to
Erlang files. The comment is meant to be removed in
Erlang/OTP R17B when UTF-8 becomes the default encoding.
OTP-10705 Update .gitignore (lib/hipe/boot_ebin). Thanks to Tuncer
Ayaz.
--- hipe-3.10.1 ---------------------------------------------------------
OTP-10867 Bug fixed in hipe to where it did not allow unicode code
points 16#FFFE and 16#FFFF in bit syntax in natively compiled
modules.
OTP-10897 Fix bug in hipe compiled code related to the handling of
is_number/1. (Thanks to Sebastian Egner and Johannes Weißl
for minimal test code and Kostis for quick patch)
--- ic-4.3 --------------------------------------------------------------
OTP-10784 Misc build updates
OTP-10785 Adapt ic for changes in erl_interface and jinterface due to
utf8 atom support. This change makes ic dependent on
erl_interface-3.7.10 (R16) or later in order to build.
--- ic-4.3.1 ------------------------------------------------------------
OTP-10885 Revert the structs erlang_pid, erlang_port and erlang_ref as
they were before R16A (without node_org_enc) in order to be
backward compatible with user code that accesses the fields
of these structs.
--- inets-5.9.3 ---------------------------------------------------------
OTP-10256 httpc: The HTTP client now supports HTTPS through proxies
OTP-10665 Some examples overflowing the width of PDF pages have been
corrected.
OTP-10765 Fix autoredirect for POST requests responding 303. Thanks to
Hans Svensson.
--- inets-5.9.4 ---------------------------------------------------------
OTP-10844 httpd: The modules option now defaults to the documented
value.
OTP-10845 httpc: Fixed persistent connection implementation that was
broken by a patch to R13. The patch made persisten
connections behaved the same way as pipelining.
OTP-10846 httpd: Simplified configuration of ssl in httpd, this also
enables all ssl options to be configured. The old and limited
way is no longer documented but will be supported for
backwards comatibility for some time.
OTP-10886 Handle correctly the "No files found or file unavailable"
error code. Thanks to Serge Aleynikov
--- jinterface-1.5.7 ----------------------------------------------------
OTP-10505 fix reading compressed binary terms from Java (Thanks to Nico
Kruber)
OTP-10579 OtpEpmd.lokupNames() no longer hangs when badly configured
(Thanks to Vlad Dumitrescu)
OTP-10630 Where necessary a comment stating encoding has been added to
Erlang files. The comment is meant to be removed in
Erlang/OTP R17B when UTF-8 becomes the default encoding.
OTP-10753 Limited support for unicode atoms in the external format and
in the internal representation of the vm. This is a
preparative feature in order to support communication with
future releases of Erlang/OTP that may create unicode atoms.
--- jinterface-1.5.8 ----------------------------------------------------
OTP-10819 Fixed a bug in OtpErlangTuple constructor. Thanks to Vlad
Dumitrescu.
OTP-10821 Fixed finding cookie file on windows. Thanks to Vlad
Dumitrescu
OTP-10822 Don't compress external binary format if this increases the
size. Thanks to Nico Kruber.
--- kernel-2.16 ---------------------------------------------------------
OTP-8067 Inet exported functionality
inet:parse_ipv4_address/1, inet:parse_ipv4strict_address/1,
inet:parse_ipv6_address/1, inet:parse_ipv6strict_address/1,
inet:parse_address/1 and inet:parse_strict_address is now
exported from the inet module.
OTP-8928 A boolean socket option 'ipv6_v6only' for IPv6 sockets has
been added. The default value of the option is OS dependent,
so applications aiming to be portable should consider using
{ipv6_v6only,true} when creating an inet6
listening/destination socket, and if neccesary also create an
inet socket on the same port for IPv4 traffic. See the
documentation.
OTP-10302 Support for Unicode has been implemented.
OTP-10417 It is no longer possible to have {Mod,Vsn} in the 'modules'
list in a .app file.
This was earlier possible, although never documented in the
.app file reference manual. It was however visible in the
documentation of application:load/[1,2], where the same term
as in a .app file can be used as the first argument.
The possibility has been removed since the Vsn part was never
used.
OTP-10419 The documentation for global:register_name/3 has been updated
to mention that the use of {Module,Function} as the method
argument (resolve function) is deprecated.
OTP-10473 The contract of erl_ddll:format_error/1 has been corrected.
(Thanks to Joseph Wayne Norton.)
OTP-10549 Fixed bug where sendfile on oracle solaris would return an
error when a partial send was done.
OTP-10617 The error_handler module will now call
'$handle_undefined_function'/2 if an attempt is made to call
a non-existing function in a module that exists. See the
documentation for error_handler module for details.
OTP-10620 Change printout of application crash message on startup to
formated strings (Thanks to Serge Aleynikov)
OTP-10624 The type ascii_string() in the base64 module has been
corrected. The type file:file_info() has been cleaned up. The
type file:fd() has been made opaque in the documentation.
OTP-10630 Where necessary a comment stating encoding has been added to
Erlang files. The comment is meant to be removed in
Erlang/OTP R17B when UTF-8 becomes the default encoding.
OTP-10662 Do not return wrong terms unnecessarily. (Thanks to Kostis
Sagonas.)
OTP-10665 Some examples overflowing the width of PDF pages have been
corrected.
OTP-10680 Add file:allocate/3 operation
This operation allows pre-allocation of space for files. It
succeeds only on systems that support such operation. (Thanks
to Filipe David Manana)
OTP-10694 Add application:get_key/3. The new function provides a
default value for a configuration parameter. Thanks to Serge
Aleynikov.
OTP-10739 Add search to Erlang shell's history. Thanks to Fred Herbert.
--- kernel-2.16.1 -------------------------------------------------------
OTP-10754 A bug that could cause a crash with wrong reason has been
corrected in the application_controller module.
OTP-10797 Slightly nicer error message when node start fails due to
duplicate name. Thanks to Magnus Henoch.
OTP-10820 Miscellaneous updates due to Unicode support.
OTP-10823 Add a new function code:get_mode() can be used to detect how
the code servers behaves. Thanks to Vlad Dumitrescu
OTP-10839 Fix type of error Reason on gen_tcp:send/2. Thanks to Sean
Cribbs.
OTP-10852 file:list_dir_all/1 and file:read_link_all/1 that can handle
raw file names have been added. See the User Guide for STDLIB
for information about raw file names.
OTP-10870 Fix code:is_module_native/1 that sometimes in R16A returned
false for hipe compiled modules containing BIFs such as
lists.
OTP-10879 Respect {exit_on_close,false} option on tcp socket in
non-passive mode when receiving fails (due to an ill-formed
packet for example) by only doing a half close and still
allow sending on the socket. (Thanks to Anthony Molinaro and
Steve Vinoski for reporting the problem)
--- megaco-3.16.0.3 -----------------------------------------------------
OTP-10630 Where necessary a comment stating encoding has been added to
Erlang files. The comment is meant to be removed in
Erlang/OTP R17B when UTF-8 becomes the default encoding.
--- mnesia-4.8 ----------------------------------------------------------
OTP-10156 Added a general framework for executing benchmarks of
Erlang/OTP. Benchmarks for the Erlang VM and mnesia have been
incorporated in the framework.
For details about how to add more benchmarks see
$ERL_TOP/HOWTO/BENCHMARKS.md in the source distribution.
OTP-10630 Where necessary a comment stating encoding has been added to
Erlang files. The comment is meant to be removed in
Erlang/OTP R17B when UTF-8 becomes the default encoding.
OTP-10636 Use chained send_after instead of send_interval, to make
decrease the number of messages sent after a sleep (Thanks to
James Wheare)
OTP-10639 Fix format of mnesia overload message (Thanks to Ahmed Omar)
OTP-10729 Remove support for the query keyword and query expressions.
Thanks to Lo<4C>c Hoguin.
--- observer-1.3 --------------------------------------------------------
OTP-10630 Where necessary a comment stating encoding has been added to
Erlang files. The comment is meant to be removed in
Erlang/OTP R17B when UTF-8 becomes the default encoding.
--- odbc-2.10.14 --------------------------------------------------------
OTP-10506 Under Unix enable TCP_NODELAY to disable Nagel's socket
algorithm. Thanks to Andy Richards
Impact: Performance gain on Unix systems
OTP-10603 Added extended_errors option to ODBC
When enabled, this option alters the return code of ODBC
operations that produce errors to include the ODBC error code
as well as the native error code, in addition to the ODBC
reason field which is returned by default. Thanks to Bernard
Duggan.
OTP-10630 Where necessary a comment stating encoding has been added to
Erlang files. The comment is meant to be removed in
Erlang/OTP R17B when UTF-8 becomes the default encoding.
OTP-10665 Some examples overflowing the width of PDF pages have been
corrected.
OTP-10735 Fix aotocommit for Oracle ODBC driver in Linux. Thanks to
Danil Onishchenko.
--- odbc-2.10.15 --------------------------------------------------------
OTP-10798 Fixed calling odbc:param_query/3 and odbc:param_query/4 with
unparameterized query string and empty parameters list.
Thanks to Danil Onishchenko.
--- orber-3.6.25 --------------------------------------------------------
OTP-10665 Some examples overflowing the width of PDF pages have been
corrected.
--- os_mon-2.2.11 -------------------------------------------------------
OTP-10448 Removed deprecated function calls to snmp
--- otp_mibs-1.0.8 ------------------------------------------------------
OTP-10784 Misc build updates
--- parsetools-2.0.8 ----------------------------------------------------
OTP-10302 Support for Unicode has been implemented.
OTP-10660 The file esyntax.yrl has been removed.
--- parsetools-2.0.9 ----------------------------------------------------
OTP-10820 Miscellaneous updates due to Unicode support.
--- percept-0.8.8 -------------------------------------------------------
OTP-10784 Misc build updates
--- pman-2.7.1.3 --------------------------------------------------------
OTP-10784 Misc build updates
--- pman-2.7.1.4 --------------------------------------------------------
OTP-10170 Tuple funs (deprecated in R15B) are no longer supported.
--- public_key-0.18 -----------------------------------------------------
OTP-7045 public_key now supports CRL validation and documents the
function public_key:pkix_path_validation/3
OTP-10665 Some examples overflowing the width of PDF pages have been
corrected.
OTP-10670 Fix subjectPublicKeyInfo type comment in public_key. Thanks
to Ryosuke Nakai.
OTP-10723 Fixed typo's in public_key spec.
OTP-10767 Corrected PKCS-10 documentation and added some PKCS-9 support
that is fairly commonly used by PKCS-10. Full support for
PKCS-9 will be added later.
--- reltool-0.6.2 -------------------------------------------------------
OTP-10012 -- If incl_cond was set to derived on module level, then
reltool_server would crash with a case_clause. This has been
corrected. incl_cond on module level now overwrites mod_cond
on app or sys level as described in the documentation.
-- If a rel spec in the reltool config does not contain all
applications that are listed as {applications,Applications}
in a .app file, then these applications are autmatically
added when creating the .rel file. For
'included_applications', the behaviour was not the same. I.e.
if a rel spec in the reltool config did not contain all
applications that are listed as
{included_applications,InclApplications} in a .app file, then
reltool would fail with reason "Undefined applications" when
creating the .rel file. This has been corrected, so both
applications and included_applications are now automatically
added if not already in the rel spec.
-- The rel specification now dictates the order in which
included and used applications (specified in the .app file as
included_applications and applications respectively) are
loaded/started by the boot file. If the applications are not
specified in the rel spec, then the order from the .app file
is used. This was a bug earlier reported on systools, and is
now also implemented in reltool.
-- Instead of only looking at the directory name, reltool now
first looks for a .app file in order to figure out the name
of an application.
OTP-10665 Some examples overflowing the width of PDF pages have been
corrected.
--- reltool-0.6.3 -------------------------------------------------------
OTP-10781 Some updates are made to reltool for handling unicode.
--- runtime_tools-1.8.10 ------------------------------------------------
OTP-10155 User Guides for the dynamic tracing tools dtrace and
systemtap have been added to the documentation.
OTP-10630 Where necessary a comment stating encoding has been added to
Erlang files. The comment is meant to be removed in
Erlang/OTP R17B when UTF-8 becomes the default encoding.
OTP-10635 Fix Table Viewer refresh crash on no more existing ets tables
(Thanks to Peti G<>mori)
OTP-10665 Some examples overflowing the width of PDF pages have been
corrected.
OTP-10786 The backend module appmon_info.erl is moved from appmon
application to runtime_tools. This allows appmon to be run
from a remote erlang node towards a target node which does
not have appmon (and its dependencies) installed, as long as
runtime_tools is installed there.
--- sasl-2.3 ------------------------------------------------------------
OTP-10394 release_handler_SUITE:otp_9864 deleted parts of the
release_handler_SUITE_data directory so the test suite could
not be executed twice without re-installation. This has been
corrected.
OTP-10417 It is no longer possible to have {Mod,Vsn} in the 'modules'
list in a .app file.
This was earlier possible, although never documented in the
.app file reference manual. It was however visible in the
documentation of application:load/[1,2], where the same term
as in a .app file can be used as the first argument.
The possibility has been removed since the Vsn part was never
used.
OTP-10463 release_handler:upgrade_script and
release_handler:downgrade_script could not read appup files
with regexps. This has been corrected. (Thanks to Ulf Wiger)
OTP-10630 Where necessary a comment stating encoding has been added to
Erlang files. The comment is meant to be removed in
Erlang/OTP R17B when UTF-8 becomes the default encoding.
--- sasl-2.3.1 ----------------------------------------------------------
OTP-10782 Some updates are made to systools and release_handler for
handling of unicode.
--- snmp-4.23 -----------------------------------------------------------
OTP-10027 [manager] Remove deprecated functions.
OTP-10610 Fix typo in snmpm doc (Thanks to Luca Favatella)
OTP-10630 Where necessary a comment stating encoding has been added to
Erlang files. The comment is meant to be removed in
Erlang/OTP R17B when UTF-8 becomes the default encoding.
OTP-10671 Polish return values of snmpm_user_default according to
snmpm_user doc.
OTP-10672 Remove runtime warning in snmpa_agent because of tuple fun
usage.
OTP-10673 SNMP manager performance optimization
--- ssh-2.1.3 -----------------------------------------------------------
OTP-6406 SSH_FX_FILE_IS_A_DIRECTORY message for sftp implemented
OTP-7785 SSH Rekeying fixed
OTP-7786 Added User Guide for the SSH application
OTP-7792 Documentation regarding failfun, connectfun and disconnectfun
provided
OTP-9478 It is now possible to send an empty binary using
ssh_connection:send/3, this corner case previously caused
ssh_connection:send to hang.
OTP-10456 Fix typo in keyboard-interactive string. Thanks to Daniel
Goertzen
OTP-10467 ssh_connectino:send/3 will not return until all data has been
sent. Previously it could return too early, resulting in
things such premature close of the connection. Also improved
error handling of closed SSH channels.
OTP-10475 Fixed ssh_cli.erl crashes because #state.buf is yet
'undefined'.
Fixed Client terminateing connections due to channel_request
message response is sent to the wrong id.
Affected SSH clients: - all clients based on
SSH-2.0-TrileadSSH2Java_213 (problem #1) - SSH Term Pro
(problem #2)
Thanks to Stefan Zegenhagen
OTP-10514 SSH connection timer implementation
New option, {idle_time, integer()}, sets a timeout on
connection when no channels are active, defaults to infinity
OTP-10665 Some examples overflowing the width of PDF pages have been
corrected.
OTP-10731 Fixed internal error on when client and server can not agree
o which authmethod to use.
--- ssh-2.1.4 -----------------------------------------------------------
OTP-10553 Better quality on the error messages for when key exchange
failed.
OTP-10862 Fix link to documentation for ssh:connect/3,4. Thanks to
Martin Hässler.
--- ssl-5.2 -------------------------------------------------------------
OTP-10361 Support Next Protocol Negotiation in TLS, thanks to Ben
Murphy for the contribution.
Impact: Could give performance benefit if used as it saves a
round trip.
OTP-10425 TLS 1.2 will now be the default TLS version if sufficient
crypto support is available otherwise TLS 1.1 will be
default.
Impact: A default TLS connection will have higher security
and hence it may be perceived as slower then before.
OTP-10447 It is now possible to call controlling_process on a listen
socket, same as in gen_tcp.
OTP-10451 Remove filter mechanisms that made error messages backwards
compatible with old ssl but hid information about what
actually happened.
This does not break the documented API however other reason
terms may be returned, so code that matches on the reason
part of {error, Reason} may fail.
OTP-10586 SSL: TLS 1.2, advertise sha224 support, thanks to Andreas
Schultz.
OTP-10594 Added missing dependencies to Makefile
OTP-10595 If an ssl server is restarted with new options and a client
tries to reuse a session the server must make sure that it
complies to the new options before agreeing to reuse it.
OTP-10613 Removed deprecated function ssl:pid/0, it has been pointless
since R14 but has been keep for backwards compatibility.
OTP-10709 Refactor to simplify addition of key exchange methods, thanks
to Andreas Schultz.
OTP-10710 Now handles cleaning of CA-certificate database correctly so
that there will be no memory leek, bug was introduced in ssl-
5.1 when changing implementation to increase parallel
execution.
Impact: Improved memory usage, especially if you have many
different certificates and upgrade tcp-connections to
TLS-connections.
--- ssl-5.2.1 -----------------------------------------------------------
OTP-10847 Transport callback handling is changed so that gen_tcp is
treated as a special case where inet will be called directly
for functions such as setopts, as gen_tcp does not have its
own setopts. This will enable users to use the transport
callback for other customizations such as websockets.
OTP-10864 Follow up to OTP-10451 solved in ssl-5.2 R16A. Make sure
format_error return good strings. Replace confusing legacy
atoms with more descriptive atoms.
--- stdlib-1.19 ---------------------------------------------------------
OTP-6874 Wildcards such as "some/path/*" passed to filelib:wildcard/2
would fail to match any file. (Thanks to Samuel Rivas for
reporting this bug.)
OTP-9803 Fixed error handling in proc_lib:start which could hang if
the spawned process died in init.
OTP-10097 Dets tables are no longer fixed while traversing with a bound
key (when only the objects with the right key are matched).
This optimization affects the functions match/2,
match_object/2, select/2, match_delete/2, and
select_delete/2.
OTP-10302 Support for Unicode has been implemented.
OTP-10431 Allow ** in filelib:wildcard
Two adjacent * used as a single pattern will match all files
and zero or more directories and subdirectories. (Thanks to
Jos<6F> Valim)
OTP-10436 The linter now warns for opaque types that are not exported,
as well as for under-specified opaque types.
OTP-10455 Add the \gN and \g{N} syntax for back references in
re:replace/3,4 to allow use with numeric replacement strings.
(Thanks to Vance Shipley)
OTP-10472 Export ets:match_pattern/0 type (Thanks to Joseph Wayne
Norton)
OTP-10474 The type file:name() has been substituted for the type
file:filename() in the following functions in the filename
module: absname/2, absname_join/2, join/1,2, and split/1.
OTP-10490 If a child process fails in its start function, then the
error reason was earlier only reported as an error report
from the error_handler, and supervisor:start_link would only
return {error,shutdown}. This has been changed so the
supervisor will now return {error,{shutdown,Reason}}, where
Reason identifies the failing child and its error reason.
(Thanks to Tomas Pihl)
OTP-10504 Fix printing the empty binary at depth 1 with ~W (Thanks to
Andrew Thompson)
OTP-10624 The type ascii_string() in the base64 module has been
corrected. The type file:file_info() has been cleaned up. The
type file:fd() has been made opaque in the documentation.
OTP-10630 Where necessary a comment stating encoding has been added to
Erlang files. The comment is meant to be removed in
Erlang/OTP R17B when UTF-8 becomes the default encoding.
OTP-10658 The contracts and types of the modules erl_scan and sys have
been corrected and improved. (Thanks to Kostis Sagonas.)
OTP-10659 The Erlang shell now skips the rest of the line when it
encounters an Erlang scanner error.
OTP-10663 Clean up some specs in the proplists module. (Thanks to
Kostis Sagonas.)
OTP-10665 Some examples overflowing the width of PDF pages have been
corrected.
OTP-10691 Enable escript to accept emulator arguments when script file
has no shebang. Thanks to Magnus Henoch
OTP-10722 Fix bug in queue:out/1, queue:out_r/1 that makes it O(N^2) in
worst case. Thanks to Aleksandr Erofeev.
OTP-10742 There are new functions in the epp module which read the
character encoding from files. See epp(3) for more
information.
OTP-10745 The functions in io_lib have been adjusted for Unicode. The
existing functions write_string() and so on now take Unicode
strings, while the old behavior has been taken over by new
functions write_latin1_string() and so on. There are also new
functions to write Unicode strings as Latin-1 strings, mainly
targetted towards the Erlang pretty printer (erl_pp).
OTP-10749 The new functions proc_lib:format/2 and erl_parse:abstract/2
accept an encoding as second argument.
OTP-10787 Increased potential concurrency in ETS for write_concurrency
option. The number of internal table locks has increased from
16 to 64. This makes it four times less likely that two
concurrent processes writing to the same table would collide
and thereby serialized. The cost is an increased constant
memory footprint for tables using write_concurrency. The
memory consumption per inserted record is not affected. The
increased footprint can be particularly large if
write_concurrency is combined with read_concurrency.
--- stdlib-1.19.1 -------------------------------------------------------
OTP-10622 Bugs related to Unicode have been fixed in the erl_eval
module.
OTP-10755 The new STDLIB application variable shell_strings can be used
for determining how the Erlang shell outputs lists of
integers. The new function shell:strings/1 toggles the value
of the variable.
The control sequence modifier l can be used for turning off
the string recognition of ~p and ~P.
OTP-10812 filelib:wildcard("some/relative/path/*.beam", Path) would
fail to match any file. That is, filelib:wildcard/2 would not
work if the first component of the pattern did not contain
any wildcard characters. (A previous attempt to fix the
problem in R15B02 seems to have made matters worse.)
(Thanks to Samuel Rivas and Tuncer Ayaz.)
There is also an incompatible change to the Path argument. It
is no longer allowed to be a binary.
OTP-10820 Miscellaneous updates due to Unicode support.
OTP-10836 Extend ~ts to handle binaries with characters coded in
ISO-latin-1
OTP-10884 The +pc flag to erl can be used to set the range of
characters considered printable. This affects how the shell
and io:format("~tp",...) functionality does heuristic string
detection. More can be read in STDLIB users guide.
--- syntax_tools-1.6.10 -------------------------------------------------
OTP-10302 Support for Unicode has been implemented.
--- syntax_tools-1.6.11 -------------------------------------------------
OTP-10820 Miscellaneous updates due to Unicode support.
--- test_server-3.6 -----------------------------------------------------
OTP-9710 Line numbering of erlang files that were not correctly
indented could be wrong after coverting to html with
erl2html2:convert/[2,3] (the source code pointed to from the
test case). This has been corrected.
Also, there are now link targets for each line and not only
for each 10th line, and link targets for functions now
include the arity and not only the function name (e.g. func/1
has a link target "func-1").
OTP-9769 Severe errors detected by test_server (e.g. if log files
directories cannot be created) will now be reported to
common_test and noted in the common_test logs.
OTP-9870 The earlier undocumented cross cover feature for accumulating
cover data over multiple tests has now been fixed and
documented.
OTP-9956 If the test suite itself was included in code coverage
analysis, then the test_server would not manage to set
data_dir correctly for the test. This has been corrected.
OTP-10046 Any call to test_server:break/1 should cancel all active
timetramps. However, in some cases Suite:end_per_testcase/2
is executed on a different process than the test case itself,
and if test_server:break/1 was called from there, the
timetraps were not cancelled. This has been corrected.
OTP-10070 When a test case failed because of a timetrap time out, the
Config data for the case was lost in the following call to
end_per_testcase/2, and also in calls to the CT Hook function
post_end_per_testcase/4. This problem has been solved and the
Config data is now correctly passed to the above functions
after a timetrap timeout failure.
OTP-10101 In test_server, the same process would supervise the
currently running test case and be group leader (and IO
server) for the test case. Furthermore, when running parallel
test cases, new temporary supervisor/group leader processes
were spawned and the process that was group leader for
sequential test cases would not be active. That would lead to
several problems:
* Processes started by init_per_suite will inherit the group
leader of the init_per_suite process (and that group leader
would not process IO requests when parallel test cases was
running). If later a parallel test case caused such a
processto print using (for example) io:format/2, the calling
would hang.
* Similarly, if a process was spawned from a parallel test
case, it would inherit the temporary group leader for that
parallel test case. If that spawned process later - when the
group of parallel tests have finished - attempted to print
something, its group leader would be dead and there would be
badarg exception.
Those problems have been solved by having group leaders
separate from the processes that supervises the test cases,
and keeping temporary group leader process for parallel test
cases alive until no more process in the system use them as
group leaders.
Also, a new unexpected_io.log log file (reachable from the
summary page of each test suite) has been introduced. All
unexpected IO will be printed into it(for example, IO to a
group leader for a parallel test case that has finished).
OTP-10156 Added a general framework for executing benchmarks of
Erlang/OTP. Benchmarks for the Erlang VM and mnesia have been
incorporated in the framework.
For details about how to add more benchmarks see
$ERL_TOP/HOWTO/BENCHMARKS.md in the source distribution.
OTP-10480 The stability of common_test and test_server when running
test cases in parallel has been improved.
OTP-10783 Update common test modules to handle unicode
-- Use UTF-8 encoding for all HTML files, except the HTML
version of the test suite generated with erl2html2:convert,
which will have the same encoding as the original test suite
(.erl) file.
-- Encode link targets in HTML files with
test_server_ctrl:uri_encode/1.
-- Use unicode modifier 't' with ~s when appropriate.
-- Use unicode:characters_to_list and
unicode:characters_to_binary for conversion between binaries
and strings instead of binary_to_list and list_to_binary.
--- test_server-3.6.1 ---------------------------------------------------
OTP-10780 The unicode update of test_server for R16A introduced a few
potential errors when logging to files. Sometimes ~tp or ~ts
was used for formatting also when writing to files that were
not opened with the {encoding,utf8} option. If then the
argument contained unicode characters above 255, the file
descriptor would crash. This has been corrected by the
following modifications:
-- Since the 'unexpected_io' log file is used only when the
test case HTML file is not available (e.g. between test
cases), this file is now also a HTML file and as other
test_server HTML logs it is always UTF-8 encoded
-- Since it is possible to change which information is going
to which log file (with test_server_ctrl:set_levels/3), we do
not have full control over which information is written to
which file. This means that any printout could be written to
the 'major' log file (suite.log), which was earlier encoded
as latin1. To avoid crashing this file descriptor due to
unicode strings, the 'major' log file is now also encoded in
UTF-8 (possible incopatibility).
-- The cross_cover.info file is no longer a text file which
can be read with file:consult/1, instead it is written as a
pure binary file using term_to_binary when writing and
binary_to_term when reading.
-- The encoding of the file named 'last_name', which only
content is the path to the last run.<timestamp> directory, is
now dependent on the file name mode of the VM. If file names
are expected to be unicode, then the 'last_name' file is
UTF-8 encoded, else it is latin1 encoded.
Also, ~tp has been changed back to ~p unless it is somehow
likely that the argument includes strings. It is not obvious
that this is the correct thing to do, but some decission had
to be taken...
OTP-10832 Using the force_stop flag/option to interrupt a test run
caused a crash in Common Test. This problem has been solved.
--- toolbar-1.4.2.3 -----------------------------------------------------
OTP-10784 Misc build updates
--- tools-2.6.9 ---------------------------------------------------------
OTP-10302 Support for Unicode has been implemented.
OTP-10465 Make erlang-mode more compatible with package.el (Thanks to
Gleb Peregud)
OTP-10523 A new function, cover:flush(Nodes), is added which will fetch
data from remote nodes without stopping cover on those nodes.
This is used by test_server and common_test when it is safe
to assume that the node will be terminated after the test
anyway. The purpose is to avoid processes crashing when
re-loading the original beam if the processes is still
running old code.
Remote nodes will now continue to count code coverage if the
connection to the main node is broken. Earlier, a broken
connection would cause the cover_server on the remote node to
die and thus any still cover compiled modules would cause
process crash when trying to insert cover data in ets tables
that used to exist on the cover_server. The new functionality
also involves synchronization with the main node if the nodes
are reconnected.
OTP-10611 Fix various typos (thanks to Tuncer Ayaz)
OTP-10630 Where necessary a comment stating encoding has been added to
Erlang files. The comment is meant to be removed in
Erlang/OTP R17B when UTF-8 becomes the default encoding.
OTP-10637 Add separate face for exported functions (Thanks to Thomas
J<>rvstrand)
OTP-10766 Fix syntax highlighting of $\' in Emacs mode. Thanks to
Magnus Henoch.
OTP-10774 The BIF highlighting in the emacs mode has been updated to
correspond with the correct BIFs.
--- tools-2.6.10 --------------------------------------------------------
OTP-10778 Fix a bug in cover when used with no_auto_import. Thanks to
José Valim.
--- tv-2.1.4.10 ---------------------------------------------------------
OTP-10784 Misc build updates
--- typer-0.9.5 ---------------------------------------------------------
OTP-10784 Misc build updates
--- webtool-0.8.9.2 -----------------------------------------------------
OTP-10784 Misc build updates
--- wx-1.0 --------------------------------------------------------------
OTP-10407 The wx application now compiles and is usable with the
unstable development branch of wxWidgets-2.9. Some functions
are currently not available in wxWidgets-2.9 and their erlang
counterparts are marked as deprecated. They will generate an
error if called when linked against wxWidgets-2.9 libraries.
This means that wx can now be built on 64bit MacOsX, but keep
in mind that wxWidgets-2.9 is still a development branch and
needs (a lot) more work before it becomes stable.
OTP-10585 Add {silent_start, boolean()} option to wx:new/1 in order to
be able to suppress error messages during startup of wx.
(Thanks to H<>kan Mattsson)
OTP-10743 Fix wxTreeCtrl:getBoundingRect/2 and wxTreeCtrl:hitTest/1.
wxTreeCtrl:hitTest now returns a tuple not bug compatible
with previous releases but needed.
--- xmerl-1.3.3 ---------------------------------------------------------
OTP-10630 Where necessary a comment stating encoding has been added to
Erlang files. The comment is meant to be removed in
Erlang/OTP R17B when UTF-8 becomes the default encoding.
OTP-10665 Some examples overflowing the width of PDF pages have been
corrected.
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