Bug fix release : otp_src_R13B01
Build date : 2009-06-08
This is R13B01, the first maintenance release for the R13B major release.
You can find the README file for the release at
http://www.erlang.org/download/otp_src_R13B01.readme (this file)
The source distribution and binary distribution for Windows can be
downloaded from
http://www.erlang.org/download/otp_src_R13B01.tar.gz
http://www.erlang.org/download/otp_win32_R13B01.exe
The distribution can also be downloaded using the BitTorrent
protocol. Use the following torrent files to download the source
distribution and binary distribution for Windows:
http://www.erlang.org/download/otp_src_R13B01.tar.gz.torrent
http://www.erlang.org/download/otp_win32_R13B01.exe.torrent
Note: To unpack the TAR archive you need a GNU TAR compatible program.
For installation instructions please read the README file that is part
of the distribution.
The 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_R13B01.tar.gz
http://www.erlang.org/download/otp_doc_man_R13B01.tar.gz
We also want to thank those that sent us patches, suggestions and bug
reports,
The OTP Team
--- HIGHLIGHTS ------------------------------------------------------------
OTP-7774 Major improvements of the Erlang distribution for Erlang
runtime systems with SMP support. Previously distribution
port locks were heavily contended, and all encoding and
decoding for a specific distribution channel had to be done
in sequence. Lock contention due to the distribution is now
negligible and both encoding and decoding of Erlang messages
can be done in parallel.
The old atom cache protocol used by the Erlang distribution
has been dropped since it effectively prevented all parallel
encoding and decoding of messages passed over the same
distribution channel.
A new atom cache protocol has been introduced which isolates
atom cache accesses and makes parallel encoding and decoding
of messages passed over the same distribution channel
possible. The new atom cache protocol also use an atom cache
size 8 times larger than before. The new atom cache protocol
is documented in the ERTS users guide.
Erlang messages received via the distribution are now decoded
by the receiving Erlang processes without holding any
distribution channel specific locks. Erlang messages and
signals sent over the distribution are as before encoded by
the sending Erlang process, but now without holding any
distribution channel specific locks during the encoding. That
is, both encoding and decoding can be and are done in
parallel regardless of distribution channel used.
The part that cannot be parallelized is the atom cache
updates. Atom cache updates are therefore now scheduled on
the distribution port. Since it is only one entity per
distribution channel doing this work there is no lock
contention due to the atom cache updates.
The new runtime system does not understand the old atom cache
protocol. New and old runtime systems can however still
communicate, but no atom cache will be used.
OTP-7922 Improved SMP concurrency for ETS tables. Several mutating
operations can now be performed truly concurrent on different
records of the same table. To support this, the table has to
be created with option write_concurrency, as it is achieved
at the expense of some execution and memory overhead.
Furthermore, ets:select and select_count has been improved
for all table types to not aquire exclusive table lock during
the iteration. And iterations using first and next over
ordered_set will also not aquire exclusive table lock
anymore.
OTP-7995 Two new options are added to open_port - spawn_executable
which runs external executables in a controlled way, and
spawn_driver which only opens port to loaded Erlang drivers.
See the erlang manual page for details.
OTP-8006 New functionality in ETS to transfer the ownership of a
table. A table can either change owner by declaring an
"heir", another process that will inherit the table if the
owner terminates. The owner of a table can also be changed by
calling a new function ets:give_away.
OTP-8013 Leex, a lexical analyzer generator for Erlang, has been added
to Parsetools. This initial version should be considered
experimental; it is known that there will be changes and
additions. (Thanks to Robert Virding.)
--- common_test-1.4.2 ------------------------------------------------------------
OTP-7981 Various corrections and improvements of Common Test and Test
Server.
OTP-8042 Updated documentation of events.
--- compiler-4.6.2 ------------------------------------------------------------
OTP-7980 The compiler would crash while compiling certain complex
function bodies containing receive after due to a bug in the
jump optimizer (a label that had only had backward references
could still be removed). (Thanks to Vincent de Phily.)
--- cosEvent-2.1.6 ------------------------------------------------------------
OTP-7987 Obsolete guards, e.g. record vs is_record, has been changed
to avoid compiler warnings.
--- cosEventDomain-1.1.6 ------------------------------------------------------------
OTP-7987 Obsolete guards, e.g. record vs is_record, has been changed
to avoid compiler warnings.
--- cosFileTransfer-1.1.8 ------------------------------------------------------------
OTP-7987 Obsolete guards, e.g. record vs is_record, has been changed
to avoid compiler warnings.
--- cosNotification-1.1.11 ------------------------------------------------------------
OTP-7987 Obsolete guards, e.g. record vs is_record, has been changed
to avoid compiler warnings.
--- cosProperty-1.1.9 ------------------------------------------------------------
OTP-7987 Obsolete guards, e.g. record vs is_record, has been changed
to avoid compiler warnings.
--- cosTime-1.1.6 ------------------------------------------------------------
OTP-7987 Obsolete guards, e.g. record vs is_record, has been changed
to avoid compiler warnings.
--- cosTransactions-1.2.7 ------------------------------------------------------------
OTP-7987 Obsolete guards, e.g. record vs is_record, has been changed
to avoid compiler warnings.
--- dialyzer-1.9.2 ------------------------------------------------------------
OTP-8037 Fixed problem with type inference going into an infinite loop
when analyzing a strongly connected component of functions
that do not return but also contain an erroneous call which
makes them fail and be assigned the type none() instead of
the type unit().
More accurate type information for some BIFs and library
files.
Introduced boolean() as the `official' name for the type was
so far known as bool(). The latter is still accepted as well
as boolean().
--- erl_interface-3.6.2 ------------------------------------------------------------
OTP-7978 A problem with gethostbyname in erl_start.c could cause a
buffer overflow. This has now been fixed.
Clean up of code and removed compiler warnings.
--- erts-5.7.2 ------------------------------------------------------------
OTP-7472 Crash dumps should now cause less problems for the
crashdump_viewer application. (For processes where arity was
non-zero, the arguments are now longer printed - they used to
be printed in a format that was not parseable.)
OTP-7774 Major improvements of the Erlang distribution for Erlang
runtime systems with SMP support. Previously distribution
port locks were heavily contended, and all encoding and
decoding for a specific distribution channel had to be done
in sequence. Lock contention due to the distribution is now
negligible and both encoding and decoding of Erlang messages
can be done in parallel.
The old atom cache protocol used by the Erlang distribution
has been dropped since it effectively prevented all parallel
encoding and decoding of messages passed over the same
distribution channel.
A new atom cache protocol has been introduced which isolates
atom cache accesses and makes parallel encoding and decoding
of messages passed over the same distribution channel
possible. The new atom cache protocol also use an atom cache
size 8 times larger than before. The new atom cache protocol
is documented in the ERTS users guide.
Erlang messages received via the distribution are now decoded
by the receiving Erlang processes without holding any
distribution channel specific locks. Erlang messages and
signals sent over the distribution are as before encoded by
the sending Erlang process, but now without holding any
distribution channel specific locks during the encoding. That
is, both encoding and decoding can be and are done in
parallel regardless of distribution channel used.
The part that cannot be parallelized is the atom cache
updates. Atom cache updates are therefore now scheduled on
the distribution port. Since it is only one entity per
distribution channel doing this work there is no lock
contention due to the atom cache updates.
The new runtime system does not understand the old atom cache
protocol. New and old runtime systems can however still
communicate, but no atom cache will be used.
OTP-7898 Fixed a bug that caused error logging from driver_select
sometimes with additional symptoms such as failing IP
communications or even an emulator crash.
OTP-7922 Improved SMP concurrency for ETS tables. Several mutating
operations can now be performed truly concurrent on different
records of the same table. To support this, the table has to
be created with option write_concurrency, as it is achieved
at the expense of some execution and memory overhead.
Furthermore, ets:select and select_count has been improved
for all table types to not aquire exclusive table lock during
the iteration. And iterations using first and next over
ordered_set will also not aquire exclusive table lock
anymore.
OTP-7952 erl (that is erl.exe and dyn_erl) and erlexec has been made
more dynamic so no hard coded paths needs to added at
installation time to erl (that is erl.ini and erl). Reltool
will make use of this in a future release.
OTP-7971 Added functionality to get higher resolution timestamp from
system. The erlang:now function returns a timestamp that's
not always consistent with the actual operating system time
(due to resilience against large time changes in the
operating system). The function os:timestamp/0 is added to
get a similar timestamp as the one being returned by
erlang:now, but untouched by Erlangs time correcting and
smoothing algorithms. The timestamp returned by os:timestamp
is always consistent with the operating systems view of time,
like the calendar functions for getting wall clock time, but
with higher resolution. Example of usage can be found in the
os manual page.
OTP-7990 Processes could potentially get stuck on an offline
scheduler.
OTP-7995 Two new options are added to open_port - spawn_executable
which runs external executables in a controlled way, and
spawn_driver which only opens port to loaded Erlang drivers.
See the erlang manual page for details.
OTP-7997 binary_to_atom/2 and binary_to_existing_atom/2 could leak
memory if they caused a badarg exception.
OTP-8000 A process could under very rare circumstances erroneously be
resumed.
OTP-8006 New functionality in ETS to transfer the ownership of a
table. A table can either change owner by declaring an
"heir", another process that will inherit the table if the
owner terminates. The owner of a table can also be changed by
calling a new function ets:give_away.
OTP-8008 Load balancing between schedulers could under rare
circumstances cause an emulator crash.
OTP-8009 Updates to Tilera build environment.
OTP-8014 A stack trace was unnecessarily saved during process
termination.
OTP-8022 erlang:memory(processes_used) always returned 0 instead of
the correct value. (Thanks to Geoff Cant)
OTP-8030 User defined CPU topology and scheduler bind type can now be
set from the command line when starting an emulator. For more
information see the documentation of the +sct, and the +sbt
emulator flags in the erl(1) documentation.
The CPU topologies returned from erlang:system_info/1 and
erlang:system_flag/2 now always contain the processor level,
also when not strictly necessary.
OTP-8040 Various fixes in ETS: ets:first could return a deleted key in
a fixated table. ets:lookup could return objects out of order
if a deleted object was re-inserted into a fixed bag.
ets:delete_object could fail to delete duplicate objects in a
duplicate_bag.
--- eunit-2.1.2 ------------------------------------------------------------
OTP-8038 Miscellanous updates.
--- hipe-3.7.2 ------------------------------------------------------------
OTP-8038 Miscellanous updates.
--- ic-4.2.21 ------------------------------------------------------------
OTP-7982 The function print_erlang_binary (oe_ei_code_erlang_binary.c)
updated to avoid compiler warning.
OTP-7987 Obsolete guards, e.g. record vs is_record, has been changed
to avoid compiler warnings.
--- inets-5.0.14 ------------------------------------------------------------
OTP-7882 [httpc] Incorrect http version option check.
OTP-7883 [httpc] Unneccessary error report when client terminating as
a result of the server closed the socket unexpectedly.
OTP-7888 [tftp] The callback watchdog has been removed, as it turned
out to be counter productive when the disk was overloaded.
Earlier a connection was aborted when a callback (which
performs the file access in the TFTP server) took too long
time.
[tftp] The error message "Too many connections" has been
reclassified to be a warning.
OTP-7950 Failed transforming a relative URI to an absolute URI.
OTP-7976 [httpd] The HTTP server did not handle the config option
ssl_ca_certificate_file.
--- inets-5.1 ------------------------------------------------------------
OTP-7994 Updated guard tests (i.e. is_list(L) instead of list(L) and
andalso/orelse instead of ","/";").
OTP-7998 Added support for web services using only basic auth, with a
token as the user part and no password part.
OTP-8001 Remove use of the deprecated regexp module.
OTP-8004 [httpc] - Bind HTTP client to IP-addr. It is now possible to
specify an alternate ip-address and port to be used when the
client connects to the server. As a side-effect of this, the
option ipv6 has been removed and replaced by the ipfamily
option.
OTP-8005 [httpc] The option max_keep_alive_length was not implemented.
--- kernel-2.13.2 ------------------------------------------------------------
OTP-7971 Added functionality to get higher resolution timestamp from
system. The erlang:now function returns a timestamp that's
not always consistent with the actual operating system time
(due to resilience against large time changes in the
operating system). The function os:timestamp/0 is added to
get a similar timestamp as the one being returned by
erlang:now, but untouched by Erlangs time correcting and
smoothing algorithms. The timestamp returned by os:timestamp
is always consistent with the operating systems view of time,
like the calendar functions for getting wall clock time, but
with higher resolution. Example of usage can be found in the
os manual page.
OTP-7974 A bug when doing io:get_line (among other calls) from a file
opened with encoding other than latin1, causing false unicode
errors to occur, is now corrected.
--- megaco-3.11 ------------------------------------------------------------
OTP-7302 In order to better utilize multi-core procs, the flex (text)
scanner has been improved. The flex (text) scanner has been
made reentrant, *if* the flex utility supports this. Note
that the version of flex supplied with some OS/distros
(Solaris 10, FreeBSD and OpenBSD to mention a few) may not
support this, in which case the flex scanner will be
non-reentrant, just as before.
--- mnesia-4.4.10 ------------------------------------------------------------
OTP-7928 Minor (smp) optimizations.
OTP-7968 Mnesia crashed if a qlc query was running inside a
transaction when mnesia stopped at another node. Thanks Teemu
Antti-Poika.
OTP-8002 Mnesia could crash when loading local_content tables.
--- observer-0.9.8.1 ------------------------------------------------------------
OTP-7774 Major improvements of the Erlang distribution for Erlang
runtime systems with SMP support. Previously distribution
port locks were heavily contended, and all encoding and
decoding for a specific distribution channel had to be done
in sequence. Lock contention due to the distribution is now
negligible and both encoding and decoding of Erlang messages
can be done in parallel.
The old atom cache protocol used by the Erlang distribution
has been dropped since it effectively prevented all parallel
encoding and decoding of messages passed over the same
distribution channel.
A new atom cache protocol has been introduced which isolates
atom cache accesses and makes parallel encoding and decoding
of messages passed over the same distribution channel
possible. The new atom cache protocol also use an atom cache
size 8 times larger than before. The new atom cache protocol
is documented in the ERTS users guide.
Erlang messages received via the distribution are now decoded
by the receiving Erlang processes without holding any
distribution channel specific locks. Erlang messages and
signals sent over the distribution are as before encoded by
the sending Erlang process, but now without holding any
distribution channel specific locks during the encoding. That
is, both encoding and decoding can be and are done in
parallel regardless of distribution channel used.
The part that cannot be parallelized is the atom cache
updates. Atom cache updates are therefore now scheduled on
the distribution port. Since it is only one entity per
distribution channel doing this work there is no lock
contention due to the atom cache updates.
The new runtime system does not understand the old atom cache
protocol. New and old runtime systems can however still
communicate, but no atom cache will be used.
--- odbc-2.10.5 ------------------------------------------------------------
OTP-8039 A missing return statement in a non void function has been
fixed in odbcserver.c. (Thanks to Nico Kruber)
Clean up of code, changed deprecated guard functions.
--- orber-3.6.13 ------------------------------------------------------------
OTP-7987 Obsolete guards, e.g. record vs is_record, has been changed
to avoid compiler warnings.
--- os_mon-2.2.2 ------------------------------------------------------------
OTP-7741 disksup:get_disk_data/0 returned disk volume in bytes instead
of kbytes as stated in the documentation. The problem occured
on Windows only and is now corrected.
--- parsetools-2.0 ------------------------------------------------------------
OTP-7969 The parsers generated by Yecc now report correct error lines
when possible.
OTP-8013 Leex, a lexical analyzer generator for Erlang, has been added
to Parsetools. This initial version should be considered
experimental; it is known that there will be changes and
additions. (Thanks to Robert Virding.)
--- percept-0.8.2 ------------------------------------------------------------
OTP-7975 Extensions to egd:color/1 for using atoms as color definition
in addition to rgb triplets.
--- reltool-0.2.2 ------------------------------------------------------------
OTP-7999 The tool crashed when rel, script and boot files were
generated via the. This has been fixed.
--- snmp-4.13.2 ------------------------------------------------------------
OTP-7961 [manager] Failure during downed user cleanup. As part of the
cleanup after a crashed user, the manager attempts to
unregister the agents registered by this user. This however
failed, causing a server crash.
OTP-7977 [manager] Incorrectly documented value type for IpAddress
(ip). The value type for IpAddress is documented as ip but is
actually ia. The value type ip has been added. The old (not
documented) value type ia still works.
OTP-7983 [manager] EngineId lookup failes when using version-3.
OTP-7989 [agent] As of version 4.13 the possible return values of the
function snmpa_mpd:process_packet/4 changed, but this was not
documented.
--- snmp-4.13.3 ------------------------------------------------------------
OTP-8015 [manager] A get-request for an oid of type BITS was actually
returned as OCTET STRING. Values of type BITS are encoded as
OCTET STRING, which makes it impossible for the decoder to
know that they should really be of type BITS. Instead, this
has to be done higher up in the stack, where there is
knowledge of the MIB (assuming that the mib has been loaded,
there is info about the type of the mibentry). This problem
has now been fixed, but requires that the MIB defining this
mib-entry is loaded! The utility function snmpm:oid_to_type/1
has been added for debug purpose. The utility function(s)
snmp:octet_string_to_bits/1 and snmp:bits_to_octet_string/1
has also been added. These can be used if the user prefers to
handle the conversion on their own.
OTP-8020 Fixed some issues when the agent initiates a discovery
process. Changed the API of the discovery function to solve
some of these problems. Introduced various config options to
control the discovery process.
--- ssh-1.1.3 ------------------------------------------------------------
OTP-7996 The operation ssh_sftp:stop_channel/1 returned an exception
if the connection already had been closed.
OTP-8034 SSH did not handle if supervisor:start_child/2 returned
{error, already_present}.
OTP-8035 SSH no longer cause supervisor reports when a connection is
terminated in a controlled manner.
--- ssl-3.10.2 ------------------------------------------------------------
OTP-7963 A "new_ssl" socket was not closed if the controlling process
died without calling ssl:close/1.
--- ssl-3.10.3 ------------------------------------------------------------
OTP-8011 Packet handling was not implemented correctly.
Inet option handling support have been improved.
The verify_fun is now invoked even if verify_peer is used,
that implies that by default {bad_cert,unknown_ca} is an
accepted fault during the client connection phase. The check
can still be done by suppling another verify_fun.
--- stdlib-1.16.2 ------------------------------------------------------------
OTP-7933 Interpreted escripts are now tail recursive.
The function erl_eval:expr/5 has been introduced.
OTP-7965 The text of tokens returned by the Erlang scanner (erl_scan)
was sometimes empty when the text option was given and
StartLocation was a line. This bug has been fixed.
OTP-7979 gen_server:call/2,3 will be somewhat faster if the calling
process has a many messages in its message queue.
OTP-7984 The documentation for base64:decode/1 has been updated to
point out that it strips whitespace.
base64:decode/1 and base64:mime_decode/1 would sometimes fail
instead of stripping away non-base64 characters.
OTP-8019 Random now supports seed with arity one, random:seed/1, which
takes a three-tuple.
OTP-8024 The regexp module now recognizes the escape sequences \xXY
and \x{X...}.
OTP-8029 Two types in the gen module were corrected.
OTP-8033 array:from_orddict([]) and array:from_list([]) would
construct fixed arrays instead of extendible arrays.
--- syntax_tools-1.6.2 ------------------------------------------------------------
OTP-8038 Miscellanous updates.
--- test_server-3.3.2 ------------------------------------------------------------
OTP-7981 Various corrections and improvements of Common Test and Test
Server.
--- typer-0.1.7.1 ------------------------------------------------------------
OTP-8038 Miscellanous updates.
--- wx-0.98.2 ------------------------------------------------------------
OTP-7943 Olle Mattson have made a large demo, see examples/demo/, that
triggered the following bugs and new features:
New book controls.
Added wxToolbar:addTool/6.
Empty binaries will be used to indicate NULL where
applicable.
--- xmerl-1.2 ------------------------------------------------------------
OTP-6635 In xmerl-1.2 we have added the first Beta version of the new
SAX parser (module: xmerl_sax_parser), it supports XML 1.0.
We call it Beta due to that the validation part is not ready
yet and that the parser still has some known limitations
(mostly in the DTD area).
Known limitations:
- the external DTD in the DOCTYPE declaration is handled but
other external entities are not supported.
- the general entity values are just checked in the structure
after replacement.
- parsed entities are supported on markup declaration level
(e.g. partly replacement of markup declaration with
PEReference is not supported).
- conditionalSect in external DTD's are not supported.
- recursive loops in entity declarations are not detected.
The version is increased from 1.1.12 to 1.2 is due to that
the new parser is dependent on the Unicode support that was
added in OTP R13B. The old xmerl functionality is not
changed.