From 7f3486a5ddc02a366f2945dfd009c4a2697a2b98 Mon Sep 17 00:00:00 2001 From: Erlang/OTP Date: Tue, 9 Dec 2014 15:21:47 +0100 Subject: Prepare release --- erts/doc/src/notes.xml | 252 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 252 insertions(+) (limited to 'erts/doc') diff --git a/erts/doc/src/notes.xml b/erts/doc/src/notes.xml index 7bc39fd351..c896ee0cae 100644 --- a/erts/doc/src/notes.xml +++ b/erts/doc/src/notes.xml @@ -30,6 +30,258 @@

This document describes the changes made to the ERTS application.

+
Erts 6.3 + +
Fixed Bugs and Malfunctions + + +

+ Fix HiPE debug lock checking on OS X 64bit

+

+ Position-independent code is mandatory on OS X. We use + r11 as an intermediate register to fill + BIF_P->hipe.bif_callee. This fixes the following error + when doing `make debug FLAVOR=smp`:

+

+ clang -cc1as: fatal error: error in backend: 32-bit + absolute addressing is not supported in 64-bit mode

+

+ Own Id: OTP-12188

+ + +

+ Fix race bug that could cause VM crash in + erlang:port_get_data/1 if the port was closed by a + concurrent process. Also fix fatal bug if + port_set_data/2 is called with a non-immediate + data term. Both bugs exist since R16B01.

+

+ Own Id: OTP-12208

+ + +

+ Correct make variable SSL_DED_LD_RUNTIME_LIBRARY_PATH + when erl_xcomp_sysroot ends with a slash.

+

+ Own Id: OTP-12216 Aux Id: seq12700

+ + +

+ Fix two cases of unreachable code caused by false use of + assigment operators.

+

+ Own Id: OTP-12222

+ + +

+ Fix bug when hipe compiled code makes tail call to a BIF + that disables GC while trapping (sush as binary_to_list, + list_to_binary, binary_to_term, term_to_binary).

+

+ Own Id: OTP-12231

+ + +

+ Fix bug when a migrated empty memory carrier is reused + just before it should be destroyed by the thread that + created it.

+

+ Own Id: OTP-12249

+ + +

+ Prevents compile-time errors in NIFs, when the compiler + is instructed to treat missing field initializers as + errors, by adding an initializer for the new options + field which was added to ErlNifEntry for 17.3.

+

+ Own Id: OTP-12266

+ + +

+ Fixed CPU topology detection on FreeBSD systems where + Erlang/OTP is compiled by new C compilers (including, but + possibly not limited to, gcc 4.9 and clang).

+

+ Own Id: OTP-12267

+ + +

+ Use C99 function isfinite() instead of finite() when + available on non GCC compilers.

+

+ Own Id: OTP-12268

+ + +

+ Fix bug on windows where an incorrect number of links + could be returned when doing file:read_file_info on a + directory.

+

+ Own Id: OTP-12269

+ + +

+ Fix rare bug when purging module on VM started with + +Meamin.

+

+ Own Id: OTP-12273

+ + +

+ Repair run_erl terminal window size adjustment sent from + to_erl. This was broken in OTP 17.0 which could lead to + strange cursor behaviour in the to_erl shell.

+

+ Own Id: OTP-12275 Aux Id: seq12739

+ + +

+ Fixed bug on windows causing gen_tcp/udp to return an + error when given an fd to work with.

+

+ Own Id: OTP-12289

+ + +

+ Fix various internal erts issues where negating a signed + integer in C would trigger undefined behavior. This fixes + issues when dividing with bignums and list_to_integer.

+

+ Own Id: OTP-12290

+ + +

+ When flushing output to stdout on windows, the emulator + could sometimes hang indefinitely waiting for the flush + to complete. This has been fixed.

+

+ Own Id: OTP-12291

+ + +

+ Fix so that non-smp emulators with dirty scheduler + support shows the correct number of dirty schedulers when + calling erlang:system_info(system_version).

+

+ Own Id: OTP-12295

+ + +

+ Add nif_version to erlang:system_info/1 in + order to get the NIF API version of the runtime system in + a way similar to driver_version.

+

+ Own Id: OTP-12298

+ + +

+ Fix bug that could cause the return value from dirty NIF + with zero arity to be treated as garbage, leading to VM + crash.

+

+ Own Id: OTP-12300

+ + +

+ Improve allocation carrier migration search logic. This + will reduce the risk of failed migrations that could lead + to excess memory consumption. It will also improve smp + performance due to reduced memory contention on the + migration pool.

+

+ Own Id: OTP-12323

+ + +
+ + +
Improvements and New Features + + +

Introduced support for eager check I/O.

+

By default eager check I/O will be disabled, but this + will most likely be changed in OTP 18. When eager check + I/O is enabled, schedulers will more frequently check for + I/O work. Outstanding I/O operations will however not be + prioritized to the same extent as when eager check I/O is + disabled.

+

Eager check I/O can be enabled using the erl + command line argument: +secio true

+

Characteristics impact when enabled:

+ Lower latency and smoother management of externally + triggered I/O operations. A slightly reduced + priority of externally triggered I/O operations. + +

+ Own Id: OTP-12117

+ + +

+ Fix erts .app-file

+

+ Own Id: OTP-12189

+ + +

+ Add configure option --with-ssl-incl=PATH to support + OpenSSL installations with headers and libraries at + different places.

+

+ Own Id: OTP-12215 Aux Id: seq12700

+ + +

+ Optimization of atomic memory operations with release + barrier semantics on 32-bit PowerPC when using the + implementation included in OTP.

+

+ Own Id: OTP-12250

+ + +

+ Minor adjustment of scheduler activation code making sure + that an activation of a scheduler is not prevented by its + run-queue being non-empty. (Thanks to Songlu Cai)

+

+ Own Id: OTP-12287

+ + +

+ Improved support for atomic memory operations provided by + the libatomic_ops + library. Most importantly support for use of native + double word atomics when implemented by + libatomic_ops (for example, implemented for ARM).

+

+ The $ERL_TOP/HOWTO/INSTALL.md + document now also more clearly describes when you want to + build together with a libatomic_ops installation.

+

+ Own Id: OTP-12302

+ + +

+ Add configure option --with-ssl-rpath to control which + runtime library path to use for dynamic linkage toward + OpenSSL.

+

+ Own Id: OTP-12316 Aux Id: seq12753

+ + +

+ Added systemd notify support to epmd

+

+ Own Id: OTP-12321

+ + +
+ +
+
Erts 6.2.1
Fixed Bugs and Malfunctions -- cgit v1.2.3