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1 parent 29bfbfd commit 05f11890bdfec4bfc3a78e191a87e70a937ffc54 Erlang/OTP committed Feb 25, 2013
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@@ -30,6 +30,335 @@
</header>
<p>This document describes the changes made to the ERTS application.</p>
+<section><title>Erts 5.10.1</title>
+
+ <section><title>Fixed Bugs and Malfunctions</title>
+ <list>
+ <item>
+ <p>
+ Threads created internally in the runtime system by
+ vanilla, fd, and spawn drivers on Windows systems could
+ make thread unsafe calls to <c>driver_select()</c>.</p>
+ <p>
+ Own Id: OTP-10802</p>
+ </item>
+ <item>
+ <p>
+ 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.</p>
+ <p>
+ Own Id: OTP-10803</p>
+ </item>
+ <item>
+ <p>
+ The runtime system could crash when flushing data to
+ standard out or standard error on Windows.</p>
+ <p>
+ Own Id: OTP-10807</p>
+ </item>
+ <item>
+ <p>Bugs due to the port optimizations introduced in
+ erts-5.10/OTP-R16A have been fixed:</p> <list>
+ <item>Memory leak when terminating ports</item>
+ <item>Memory leak when reaching the system limit of
+ maximum amount of concurrently existing ports</item>
+ <item>Crashs due to missing, or late test of bad port
+ handle</item> <item>The newly introduced driver API
+ function <c>erl_drv_busy_msgq_limits()</c> could not be
+ used by dynamically linked in drivers on Windows</item>
+ </list>
+ <p>
+ Own Id: OTP-10809 Aux Id: OTP-10336 </p>
+ </item>
+ <item>
+ <p>
+ Fix <c>{packet,httph}</c> header capitalization for
+ unrecognized header fields longer than 20 charachters
+ such as <c>Sec-Websocket-Version</c>. The limit is simply
+ raised from 20 to 50 characters with the hope that valid
+ headers longer than 50 are not used.</p>
+ <p>
+ Own Id: OTP-10824</p>
+ </item>
+ <item>
+ <p>
+ Fix rounding issues in float_to_list/1,2. Thanks to Serge
+ Aleynikov</p>
+ <p>
+ Own Id: OTP-10837</p>
+ </item>
+ <item>
+ <p>
+ Fix memory leak in file driver introduced in R16A.</p>
+ <p>
+ Own Id: OTP-10841</p>
+ </item>
+ <item>
+ <p>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.</p>
+ <p>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.</p>
+ <p>Operations potentially effected by this bug:</p>
+ <taglist> <tag>Inspection of memory allocation
+ status</tag> <item>The Erlang process calling
+ <c>erlang:memory/[0,1]</c>, or
+ <c>erlang:system_info({allocator|allocator_sizes, _})</c>
+ could potentially hang waiting for responses from
+ involved threads.</item> <tag>Async thread pool
+ jobs</tag> <item>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.</item> <tag>Shutting down the runtime
+ system</tag> <item>Due to the issue with the async thread
+ pool mentioned above, flushing of I/O while terminating
+ the runtime system could also potentially hang.</item>
+ <tag>ETS memory deallocation</tag> <item>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.</item> <tag>Shutting
+ down distribution</tag> <item>The distribution shutdown
+ phase used when manually shutting down the distribution,
+ i.e., when calling <c>net_kernel:stop()</c>, could
+ potentially hang.</item> </taglist>
+ <p>
+ Own Id: OTP-10854</p>
+ </item>
+ <item>
+ <p>
+ OS X Snow Leopard now only uses write, as writev does not
+ work properly on very large files.</p>
+ <p>
+ Own Id: OTP-10858</p>
+ </item>
+ <item>
+ <p>
+ Fixed a bug where line oriented file I/O using read_ahead
+ was very slow for files with very large difference in
+ line length.</p>
+ <p>
+ Own Id: OTP-10859</p>
+ </item>
+ <item>
+ <p>
+ 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.</p>
+ <p>
+ Own Id: OTP-10860</p>
+ </item>
+ <item>
+ <p>
+ 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.</p>
+ <p>
+ Own Id: OTP-10875 Aux Id: OTP-10854 </p>
+ </item>
+ <item>
+ <p>
+ Fixed a bug where it was longer possible to give the +sws
+ proposal flag to non-smp emulators.</p>
+ <p>
+ Own Id: OTP-10881 Aux Id: seq12258 </p>
+ </item>
+ <item>
+ <p>
+ Faulty type to bytes read for ReadFile on Windows. This
+ could cause windows systems to misbehave. The correct
+ type is now used.</p>
+ <p>
+ Own Id: OTP-10890</p>
+ </item>
+ <item>
+ <p>
+ 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 <c>+Q
+ Value</c> to erl or werl.</p>
+ <p>
+ Own Id: OTP-10892</p>
+ </item>
+ <item>
+ <p>
+ Fix rare crash on halfword vm during code loading.</p>
+ <p>
+ Own Id: OTP-10896</p>
+ </item>
+ </list>
+ </section>
+
+
+ <section><title>Improvements and New Features</title>
+ <list>
+ <item>
+ <p>
+ Tuple funs (deprecated in R15B) are no longer supported.</p>
+ <p>
+ *** POTENTIAL INCOMPATIBILITY ***</p>
+ <p>
+ Own Id: OTP-10170</p>
+ </item>
+ <item>
+ <p>
+ Added four new bifs, <c>erlang:binary_to_integer/1,2</c>,
+ <c>erlang:integer_to_binary/1</c>,
+ <c>erlang:binary_to_float/1</c> and
+ <c>erlang:float_to_binary/1,2</c>. 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. </p>
+ <p>
+ These bifs are auto-imported into erlang source files and
+ can therefore be used without the <c>erlang</c> prefix.</p>
+ <p>
+ Own Id: OTP-10300 Aux Id: kunagi-74 [74] </p>
+ </item>
+ <item>
+ <p>
+ The experimental support for packages has been removed.</p>
+ <p>
+ Own Id: OTP-10348 Aux Id: kunagi-316 [227] </p>
+ </item>
+ <item>
+ <p>The driver API function <seealso
+ marker="erl_driver#erl_drv_consume_timeslice"><c>erl_drv_consume_timeslice()</c></seealso>,
+ and the NIF API function <seealso
+ marker="erl_nif#enif_consume_timeslice"><c>enif_consume_timeslice()</c></seealso>
+ have been introduced.</p>
+ <p>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.</p>
+ <p>
+ Own Id: OTP-10810</p>
+ </item>
+ <item>
+ <p>
+ The list_to_integer/2 bif has been optimized when used
+ with bases other than 10.</p>
+ <p>
+ Own Id: OTP-10834 Aux Id: kunagi-74 [74] </p>
+ </item>
+ <item>
+ <p>
+ The git commit sha of the HEAD commit is now added to the
+ Erlang shell when compiling a non-released Erlang
+ version.</p>
+ <p>
+ Own Id: OTP-10838</p>
+ </item>
+ <item>
+ <p>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. </p> <p>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 <c>+MMmcs 5</c></p>
+ <p>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
+ <c>erl</c> for best performance.</p>
+ <p>
+ Own Id: OTP-10840</p>
+ </item>
+ <item>
+ <p>
+ Updated config.sub and config.guess to latest version
+ from gnu.org</p>
+ <p>
+ Own Id: OTP-10848</p>
+ </item>
+ <item>
+ <p>
+ Add an xcomp file for Blue Gene/Q. Thanks to Kostis
+ Sagonas.</p>
+ <p>
+ Own Id: OTP-10849</p>
+ </item>
+ <item>
+ <p>
+ Cleanup of documentation of the type language. Thanks to
+ Kostis Sagonas.</p>
+ <p>
+ Own Id: OTP-10850</p>
+ </item>
+ <item>
+ <p>
+ Change the return value of hipe_bifs:remove_refs_from/1.
+ Thanks to Kostis Sagonas.</p>
+ <p>
+ Own Id: OTP-10851</p>
+ </item>
+ <item>
+ <p>
+ 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.</p>
+ <p>
+ *** POTENTIAL INCOMPATIBILITY ***</p>
+ <p>
+ Own Id: OTP-10872 Aux Id: OTP-10753 </p>
+ </item>
+ <item>
+ <p>
+ 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.</p>
+ <p>
+ Own Id: OTP-10884</p>
+ </item>
+ <item>
+ <p>
+ 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)</p>
+ <p>
+ Own Id: OTP-10887</p>
+ </item>
+ <item>
+ <p>
+ 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.</p>
+ <p>
+ Own Id: OTP-10895</p>
+ </item>
+ </list>
+ </section>
+
+</section>
+
<section><title>Erts 5.10</title>
<section><title>Fixed Bugs and Malfunctions</title>
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@@ -31,6 +31,22 @@
<p>This document describes the changes made to the asn1 application.</p>
+<section><title>Asn1 2.0.1</title>
+
+ <section><title>Fixed Bugs and Malfunctions</title>
+ <list>
+ <item>
+ <p>
+ Fixed broken table constraints within a SET OF or
+ SEQUENCE OF for the BER backend.</p>
+ <p>
+ Own Id: OTP-10853 Aux Id: seq12245 </p>
+ </item>
+ </list>
+ </section>
+
+</section>
+
<section><title>Asn1 2.0</title>
<section><title>Fixed Bugs and Malfunctions</title>
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@@ -1,2 +1,2 @@
#next version number to use is 2.0
-ASN1_VSN = 2.0
+ASN1_VSN = 2.0.1
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