From a2ca3bd78fc002dd1e6533c191e44092cc3aa949 Mon Sep 17 00:00:00 2001
From: Erlang/OTP <otp@erlang.org>
Date: Mon, 10 Dec 2018 11:07:05 +0100
Subject: Prepare release
---
erts/doc/src/notes.xml | 195 +++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 195 insertions(+)
(limited to 'erts/doc')
diff --git a/erts/doc/src/notes.xml b/erts/doc/src/notes.xml
index 2a823d9fe7..a34b3edd7a 100644
--- a/erts/doc/src/notes.xml
+++ b/erts/doc/src/notes.xml
@@ -31,6 +31,201 @@
</header>
<p>This document describes the changes made to the ERTS application.</p>
+<section><title>Erts 10.2</title>
+
+ <section><title>Fixed Bugs and Malfunctions</title>
+ <list>
+ <item>
+ <p>
+ When a process was waiting for a TCP socket send
+ operation to complete, and another process closed the
+ socket during that send, the sending process could hang.
+ This bug has now been corrected.</p>
+ <p>
+ Own Id: OTP-12242 Aux Id: ERL-561 </p>
+ </item>
+ <item>
+ <p>
+ Document <c>bit_size</c> in match specifications and
+ allow it in <c>ets:fun2ms</c>.</p>
+ <p>
+ Own Id: OTP-15343 Aux Id: PR-1962 </p>
+ </item>
+ <item>
+ <p>
+ Fixed bug in <c>ets:select_replace</c> when called with a
+ fully bound key could cause a following call to
+ <c>ets:next</c> or <c>ets:prev</c> to crash the emulator
+ or return invalid result.</p>
+ <p>
+ Own Id: OTP-15346</p>
+ </item>
+ <item>
+ <p>When a module has been purged from memory, any
+ literals belonging to that module will be copied to all
+ processes that hold references to them. The max heap size
+ limit would be ignored in the garbage collection
+ initiated when copying literals to a process. If the max
+ heap size was exceeded, the process would typically be
+ terminated in the following garbage collection. Corrected
+ to terminate the process directly if copying a literal
+ would exceed the max heap size.</p>
+ <p>
+ Own Id: OTP-15360</p>
+ </item>
+ <item>
+ <p>
+ Fix compilation of run_erl on Solaris 11.4 and later.</p>
+ <p>
+ Own Id: OTP-15389</p>
+ </item>
+ <item>
+ <p>Fixed a bug where <c>lists:reverse/1-2</c> could use
+ far too many reductions. This bug was introduced in
+ <c>OTP 21.1</c>.</p>
+ <p>
+ Own Id: OTP-15436</p>
+ </item>
+ <item>
+ <p>Fixed a bug where a dirty scheduler could stay awake
+ forever if a distribution entry was removed as part of a
+ dirty GC.</p>
+ <p>
+ Own Id: OTP-15446 Aux Id: PR-2024 </p>
+ </item>
+ <item>
+ <p>
+ Fix microstate accounting handing in various places. Most
+ importantly the GC states when the GC is run on a dirty
+ scheduler are now managed correctly.</p>
+ <p>
+ Own Id: OTP-15450 Aux Id: ERIERL-229 </p>
+ </item>
+ <item>
+ <p>
+ Fixed bug in <c>file:sendfile</c> when the send operation
+ failed. For sockets in <c>active</c> modes it could cause
+ emulator crash or a hanging call. For sockets with
+ <c>{active,false}</c> an unexpected <c>{inet_reply, _,
+ _}</c> message could be sent to the calling process. The
+ bug exists since OTP-21.0.</p>
+ <p>
+ Own Id: OTP-15461 Aux Id: ERL-784 </p>
+ </item>
+ <item>
+ <p>
+ The erts configure script has been updated to reject any
+ CFLAGS that does not have <c>-O</c>. This in order to
+ prevent the common mistake of forgetting to add
+ <c>-O2</c> to custom CFLAGS.</p>
+ <p>
+ Own Id: OTP-15465</p>
+ </item>
+ <item>
+ <p>
+ Fix reduction count in lists:member/2</p>
+ <p>
+ Own Id: OTP-15474 Aux Id: ERIERL-229 </p>
+ </item>
+ </list>
+ </section>
+
+
+ <section><title>Improvements and New Features</title>
+ <list>
+ <item>
+ <p>
+ New <c>counters</c> and <c>atomics</c> modules supplies
+ access to highly efficient operations on mutable fixed
+ word sized variables.</p>
+ <p>
+ Own Id: OTP-13468</p>
+ </item>
+ <item>
+ <p>There is a new module <c>persistent_term</c> that
+ implements a term storage suitable for terms that are
+ frequently used but never or infrequently updated.
+ Lookups are done in constant time without copying the
+ terms.</p>
+ <p>
+ Own Id: OTP-14669 Aux Id: PR-1989 </p>
+ </item>
+ <item>
+ <p>
+ A function <c>inet:getifaddrs/1</c> that takes a list
+ with a namespace option has been added, for platforms
+ that support that feature, for example Linux (only?).</p>
+ <p>
+ Own Id: OTP-15121 Aux Id: ERIERL-189, PR-1974 </p>
+ </item>
+ <item>
+ <p>Added the <c>nopush</c> option for TCP sockets, which
+ corresponds to <c>TCP_NOPUSH</c> on *BSD and
+ <c>TCP_CORK</c> on Linux.</p>
+ <p>This is also used internally in <c>file:sendfile</c>
+ to reduce latency on subsequent send operations.</p>
+ <p>
+ Own Id: OTP-15357 Aux Id: ERL-698 </p>
+ </item>
+ <item>
+ <p>List subtraction (The <c>--</c> operator) will now
+ yield properly on large inputs.</p>
+ <p>
+ Own Id: OTP-15371</p>
+ </item>
+ <item>
+ <p>
+ Optimize handling of send_delay for tcp sockes to better
+ work with the new pollthread implementation introduced in
+ OTP-21.</p>
+ <p>
+ Own Id: OTP-15471 Aux Id: ERIERL-229 </p>
+ </item>
+ <item>
+ <p>
+ Optimize driver_set_timer with a zero timeout to
+ short-circuit and not create any timer structure, but
+ instead schedule the timer immediately.</p>
+ <p>
+ Own Id: OTP-15472 Aux Id: ERIERL-229 </p>
+ </item>
+ <item>
+ <p>
+ Add <c>erl_xcomp_code_model_small</c> as a cross
+ configure variable in order to let the emulator be build
+ with the assumption that a small code model will be used
+ on the target machine.</p>
+ <p>
+ Own Id: OTP-15473 Aux Id: ERIERL-229 </p>
+ </item>
+ <item>
+ <p>
+ Add a new pollset that is made to handle sockets that use
+ <c>{active, true}</c> or <c>{active, N}</c>. The new
+ pollset will not be polled by a pollthread, but instead
+ polled by a normal scheduler.</p>
+ <p>
+ This change was made because of the overhead associated
+ with constantly having to re-apply the ONESHOT mechanism
+ on fds that all input events were interesting.</p>
+ <p>
+ The new pollset is only active on platforms that support
+ concurrent kernel poll updates, i.e. Linux and BSD.</p>
+ <p>
+ Own Id: OTP-15475 Aux Id: ERIERL-229 </p>
+ </item>
+ <item>
+ <p>
+ Fix bug where emulator would segfault if a literal
+ message was sent when sequence tracing was enabled.</p>
+ <p>
+ Own Id: OTP-15478 Aux Id: ERL-741 </p>
+ </item>
+ </list>
+ </section>
+
+</section>
+
<section><title>Erts 10.1.3</title>
<section><title>Improvements and New Features</title>
--
cgit v1.2.3