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diff --git a/erts/doc/src/notes.xml b/erts/doc/src/notes.xml index 3473a12526..582ad2e9fe 100644 --- a/erts/doc/src/notes.xml +++ b/erts/doc/src/notes.xml @@ -31,6 +31,258 @@ </header> <p>This document describes the changes made to the ERTS application.</p> +<section><title>Erts 11.0</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + Do not allocate new bitstring/binary when an empty binary + is appended.</p> + <p> + Own Id: OTP-15535 Aux Id: PR-2055 </p> + </item> + <item> + <p> + Document that <c>process_info(_, current_function)</c> + can return <c>{current_function, undefined}</c> in case + of execution of native code.</p> + <p> + Own Id: OTP-15543 Aux Id: PR-2089 </p> + </item> + </list> + </section> + + + <section><title>Improvements and New Features</title> + <list> + <item> + <p> + Add support for Erlang Distribution protocol to split the + payload of large signals into several fragments. This + allows other processes to communicate uninterrupted + during the transmission of these signals.</p> + <p> + Own Id: OTP-13397</p> + </item> + <item> + <p> + A simple socket API has been provided through the socket + module. Known issues are; No support for the Windows OS + (currently), a small term leakage.</p> + <p> + Own Id: OTP-14831</p> + </item> + <item> + <p>Added NIF functions <seealso + marker="erl_nif#enif_set_pid_undefined"><c>enif_set_pid_undefined</c></seealso>, + <seealso + marker="erl_nif#enif_is_pid_undefined"><c>enif_is_pid_undefined</c></seealso> + and <seealso + marker="erl_nif#enif_compare_pids"><c>enif_compare_pids</c></seealso>.</p> + <p> + Own Id: OTP-15011 Aux Id: PR-2147 </p> + </item> + <item> + <p>Underutilized memory segments (carriers) can now move + between all allocator instances, rather than just between + instances of the same type, which greatly reduces memory + usage in some scenarios. </p> + <p> + Own Id: OTP-15063</p> + </item> + <item> + <p>The emulator will now mark free blocks in pooled + carriers with <c>madvise(2) + MADV_FREE</c> (or similar), + letting the OS reclaim the associated physical memory if + necessary.</p> + <p> + Own Id: OTP-15075</p> + </item> + <item> + <p> + New <c>ERL_NIF_SELECT_CANCEL</c> feature added to + <c>enif_select</c> in order to cancel (or "deselect") a + read or write event on a previously selected file + descriptor.</p> + <p> + Own Id: OTP-15095</p> + </item> + <item> + <p> + ETS option <c>write_concurrency</c> now also affects and + improves the scalability of <c>ordered_set</c> tables. + The implementation is based on a data structure called + contention adapting search tree, where the lock + granularity adapts to the actual amount of concurrency + exploited by the applications in runtime.</p> + <p> + Own Id: OTP-15128</p> + </item> + <item> + <p> + Build configuration of the <c>crypto</c> application has + been moved from the <c>erts</c> application into the + <c>crypto</c> application.</p> + <p> + Own Id: OTP-15129</p> + </item> + <item> + <p>Anonymous functions that don't capture environment are + now created at load-time instead of in run-time.</p> + <p> + Own Id: OTP-15195 Aux Id: PR-1812 </p> + </item> + <item> + <p> + Optimize updates of maps with identical keys and values. + E.g. in the example below the original Map will be reused + as the return of the update.</p> + <p> + 1> Map = #{ a => b }. #{ a => b } 2> Map#{ a := b }.</p> + <p> + Own Id: OTP-15211 Aux Id: PR-1889 </p> + </item> + <item> + <p> + Optimize <c>binary:match/2</c> and + <c>binary:matches/2</c> to use memchr internally.</p> + <p> + Own Id: OTP-15238 Aux Id: PR-1803 </p> + </item> + <item> + <p> + The runtime system used to terminate when a message + larger than 2 Gb was passed over the distribution. The + send operation will now instead throw a + <c>system_limit</c> exeption.</p> + <p> + Own Id: OTP-15261</p> + </item> + <item> + <p> + Change the first module called by erts to be names + erl_init instead of otp_ring0. systools in sasl have been + updated to reflect this change.</p> + <p> + Own Id: OTP-15336 Aux Id: PR-1825 </p> + </item> + <item> + <p> + Minor adjustments made to build system for parallel + configure.</p> + <p> + Own Id: OTP-15340 Aux Id: OTP-14625 </p> + </item> + <item> + <p> + Two new NIF interface functions <c>enif_select_read</c> + and <c>enif_select_write</c>. They are similar to + existing <c>enif_select</c> but allow a custom event + message as argument.</p> + <p> + Own Id: OTP-15349 Aux Id: PR-2084 </p> + </item> + <item> + <p>The embedded copy of <c>zlib</c> has been updated from + <c>1.2.8</c> to <c>1.2.11</c>.</p> + <p>Note that this copy is only used as a fallback when + the target platform doesn't provide any <c>zlib</c> + development libraries. If your system provides + <c>zlib</c> then it will be used even if it is older than + <c>1.2.11</c>.</p> + <p> + Own Id: OTP-15351 Aux Id: ERL-749 </p> + </item> + <item> + <p> + New NIF function <c>enif_make_monitor_term</c>.</p> + <p> + Own Id: OTP-15362 Aux Id: PR-2127 </p> + </item> + <item> + <p>Appending lists (The ++ operator) will now yield + properly on large inputs.</p> + <p> + Own Id: OTP-15427</p> + </item> + <item> + <p>The <c>length/1</c> BIF used to calculate the length + of the list in one go without yielding, even if the list + was very long. In OTP 22, <c>length/1</c> will yield when + called with a long lists.</p> + <p> + Own Id: OTP-15439</p> + </item> + <item> + <p>The transitory emulator option <c>+ztma true</c> + (introduced in OTP 21.3) has been removed.</p> + <p> + Own Id: OTP-15581 Aux Id: OTP-15580 </p> + </item> + <item> + <p> + The termination behaviour of processes has changed to + allow processes to yield while sending link exit/monitor + down signals.</p> + <p> + Own Id: OTP-15610</p> + </item> + <item> + <p> + The dist messages EXIT, EXIT2 and MONITOR_DOWN have been + updated with new versions that send the reason term as + part of the payload of the message instead of as part of + the control message.</p> + <p> + The old versions are still present and can be used when + communicating with nodes that don't support the new + versions.</p> + <p> + Own Id: OTP-15611</p> + </item> + <item> + <p> + When sending messages, exit, exit2 and monitor down + distributed signals, the process sending will now yield + appropriately.</p> + <p> + This means that a terminating process will yield and + possibly be suspended on busy distribution entries while + they are terminating. This means that any memory held by + such processes will not be released until after all + exit/monitor down signals have been sent.</p> + <p> + Own Id: OTP-15612</p> + </item> + <item> + <p> + All external pids/ports/refs created by + erlang:list_to_pid and similar functions now compare + equal to any other pid/port/ref with the same number from + that node.</p> + <p> + Before this change they compared differently because the + node creation of the pid/port/ref did not compare equal + to any real pid/port/ref creation.</p> + <p> + *** POTENTIAL INCOMPATIBILITY ***</p> + <p> + Own Id: OTP-15613</p> + </item> + <item> + <p>The <c>iolist_size/1</c> function is now yielding + which means that an Erlang/OTP system will be responsive + even if the applications running on the system frequently + call <c>iolist_size/1</c> with large iolists.</p> + <p> + Own Id: OTP-15631</p> + </item> + </list> + </section> + +</section> + <section><title>Erts 10.2.4</title> <section><title>Fixed Bugs and Malfunctions</title> |