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Diffstat (limited to 'erts/doc/src/notes.xml')
| -rw-r--r-- | erts/doc/src/notes.xml | 419 |
1 files changed, 418 insertions, 1 deletions
diff --git a/erts/doc/src/notes.xml b/erts/doc/src/notes.xml index 70f2d95103..c11509131c 100644 --- a/erts/doc/src/notes.xml +++ b/erts/doc/src/notes.xml @@ -30,6 +30,423 @@ </header> <p>This document describes the changes made to the ERTS application.</p> +<section><title>Erts 5.7.5</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + Fix <c>binary_to_term</c> crash on compressed term with + corrupt size field.</p> + <p> + Own Id: OTP-8336</p> + </item> + <item> + <p> + Processes and/or ports could get stuck on a blocked + scheduler when <c>erlang:system_flag(multi_scheduling, + block)</c> was used.</p> + <p> + Processes and/or ports could get stuck on an offline + scheduler when schedulers online were reduced using + <c>erlang:system_flag(schedulers_online, + SchedulersOnline)</c>.</p> + <p> + Own Id: OTP-8342</p> + </item> + <item> + <p>Building on Windows will now work if the paths to + <c>mc.exe</c> and <c>rc.exe</c> contain spaces. The + README.win32 file has been updated with some information + about building using Visual Studio 2008. (Thanks to + Andrew Thompson.)</p> + <p> + Own Id: OTP-8345</p> + </item> + <item> + <p> + EPMD now correctly handles the extra data field which can + be given in the ALIVE2_REQ request and retrieved in the + PORT2_RESP response. (Thanks to Klas Johansson.)</p> + <p> + Own Id: OTP-8361</p> + </item> + <item> + <p> + The configure test for reliable floating point exceptions + has been update to work on modern versions of Mac OS X. + (Thanks to Trannie Carter.)</p> + <p> + Own Id: OTP-8368</p> + </item> + <item> + <p> + ERTS makefiles used to detect the use of a gcc C compiler + by checking if CC equaled gcc. That is, the makefiles + failed to detect gcc C compilers with other command line + names than gcc. `configure' now substitute GCC into the + makefiles. If CC is a gcc C compiler, GCC will have the + value yes. (Thanks to Jean-S�bastien P�dron)</p> + <p> + Own Id: OTP-8373</p> + </item> + <item> + <p> + ETS bug causing the <c>memory</c> counter from + <c>ets:info</c> for ordered_set's to sometimes get out of + synch and absurdly high.</p> + <p> + Own Id: OTP-8377 Aux Id: seq11442 </p> + </item> + <item> + <p> + Immediately repeated multi-scheduling block/unblock + cycles using <c>erlang:system_flag(multi_scheduling, + block | unblock)</c> could deadlock the runtime system.</p> + <p> + Own Id: OTP-8386</p> + </item> + <item> + <p>A number of bugs concerning re and unicode are + corrected:</p> + <p>re:compile no longer looses unicode option, which also + fixes bug in re:split.</p> + <p>re:replace now handles unicode charlist replacement + argument</p> + <p>re:replace now handles unicode RE charlist argument + correctly</p> + <p>re:replace now handles binary unicode output correctly + when nothing is replaced.</p> + <p>Most code, testcases and error isolation done by Rory + Byrne.</p> + <p> + Own Id: OTP-8394</p> + </item> + <item> + <p> + The loading of native code was not properly atomic in the + SMP emulator, which could cause crashes. Also a per-MFA + information table for the native code has now been + protected with a lock since it turns that it could be + accessed concurrently in the SMP emulator. (Thanks to + Mikael Pettersson.)</p> + <p> + Own Id: OTP-8397</p> + </item> + <item> + <p> + Fix processes in exiting status that are about to be + scheduled, to not be allowed to garbage collect.</p> + <p> + Own Id: OTP-8420</p> + </item> + <item> + <p>Removed bogus "\011" character sequence in + documentation.</p> + <p> + Own Id: OTP-8422</p> + </item> + <item> + <p> + The resolver routines failed to look up the own node name + as hostname, if the OS native resolver was erroneously + configured, bug reported by Yogish Baliga, now fixed.</p> + <p> + The resolver routines now tries to parse the hostname as + an IP string as most OS resolvers do, unless the native + resolver is used.</p> + <p> + The DNS resolver inet_res and file resolver inet_hosts + now do not read OS configuration files until they are + needed. Since the native resolver is default, in most + cases they are never needed.</p> + <p> + The DNS resolver's automatic updating of OS configuration + file data (/etc/resolv.conf) now uses the 'domain' + keyword as default search domain if there is no 'search' + keyword.</p> + <p> + Own Id: OTP-8426 Aux Id: OTP-8381 </p> + </item> + <item> + <p> + The re module: A regular expression with an option change + at the start of a pattern that had top-level alternatives + could cause overwriting and/or a crash. (Thanks to + Michael Santos.)</p> + <p> + Own Id: OTP-8438</p> + </item> + <item> + <p> + Harmless buffer overflow by one byte in asn1 and + ram_file_drv.</p> + <p> + Own Id: OTP-8451</p> + </item> + </list> + </section> + + + <section><title>Improvements and New Features</title> + <list> + <item> + <p> + Improved GC performance after BIF/NIF call when a lot of + heap fragments was created. This will mainly benefit NIFs + that return large compound terms.</p> + <p> + Own Id: OTP-8240</p> + </item> + <item> + <p>Incompatible changes in the experimental NIF + feature.</p> <list><item> Changed the NIF function + prototypes in order to allow more than 3 function + arguments. </item><item> <c>enif_get_data</c> renamed as + <c>enif_priv_data</c>. </item><item> + <c>enif_make_string</c> got a third argument for + character encoding. </item><item> The return value of + <c>erlang:load_nif/2</c> on error changed. </item></list> + <p>Read more in the documentation of <c>erl_nif</c> and + <c>erlang:load_nif/2</c></p>. + <p> + *** POTENTIAL INCOMPATIBILITY ***</p> + <p> + Own Id: OTP-8304</p> + </item> + <item> + <p>Cross compilation improvements and other build system + improvements.</p> + <p>Most notable:</p> <list><item> Lots of cross + compilation improvements. The old cross compilation + support was more or less non-existing as well as broken. + Please, note that the cross compilation support should + still be considered as experimental. Also note that old + cross compilation configurations cannot be used without + modifications. For more information on cross compiling + Erlang/OTP see the <c>$ERL_TOP/INSTALL-CROSS.md</c> file. + </item><item> Support for staged install using <url + href="http://www.gnu.org/prep/standards/html_node/DESTDIR.html">DESTDIR</url>. + The old broken <c>INSTALL_PREFIX</c> has also been fixed. + For more information see the <c>$ERL_TOP/INSTALL.md</c> + file. </item><item> Documentation of the <c>release</c> + target of the top <c>Makefile</c>. For more information + see the <c>$ERL_TOP/INSTALL.md</c> file. </item><item> + <c>make install</c> now by default creates relative + symbolic links instead of absolute ones. For more + information see the <c>$ERL_TOP/INSTALL.md</c> file. + </item><item> <c>$ERL_TOP/configure --help=recursive</c> + now works and prints help for all applications with + <c>configure</c> scripts. </item><item> Doing <c>make + install</c>, or <c>make release</c> directly after + <c>make all</c> no longer triggers miscellaneous + rebuilds. </item><item> Existing bootstrap system is now + used when doing <c>make install</c>, or <c>make + release</c> without a preceding <c>make all</c>. + </item><item> The <c>crypto</c> and <c>ssl</c> + applications use the same runtime library path when + dynamically linking against <c>libssl.so</c> and + <c>libcrypto.so</c>. The runtime library search path has + also been extended. </item><item> The <c>configure</c> + scripts of <c>erl_interface</c> and <c>odbc</c> now + search for thread libraries and thread library quirks the + same way as <c>erts</c> do. </item><item> The + <c>configure</c> script of the <c>odbc</c> application + now also looks for odbc libraries in <c>lib64</c> and + <c>lib/64</c> directories when building on a 64-bit + system. </item><item> The <c>config.h.in</c> file in the + <c>erl_interface</c> application is now automatically + generated in instead of statically updated which reduces + the risk of <c>configure</c> tests without any effect. + </item></list> + <p>(Thanks to Henrik Riomar for suggestions and + testing)</p> + <p>(Thanks to Winston Smith for the AVR32-Linux cross + configuration and testing)</p> + <p> + *** POTENTIAL INCOMPATIBILITY ***</p> + <p> + Own Id: OTP-8323</p> + </item> + <item> + <p>NIF improvements:</p> <list><item> Driver API for + multi-threading made available for NIFs. </item><item> + Support for mempory managed (garbage collected) resource + objects. A way to pass "pointers" to native data + structures between C and Erlang in a safe way. + </item><item> Support for references, floats and term + comparison. </item><item> Various new functions, like + <c>enif_inspect_iolist_as_binary</c>, + <c>enif_make_sub_binary</c>, <c>enif_get_string</c>, + <c>enif_get_atom</c>, <c>enif_make_tuple_from_array</c>, + <c>enif_make_list_from_array</c>, + <c>enif_make_existing_atom</c>. </item></list> + <p> + Own Id: OTP-8335</p> + </item> + <item> + <p> + Minor alignment adjustments of scheduler specific data.</p> + <p> + Own Id: OTP-8341</p> + </item> + <item> + <p>The documentation is now possible to build in an open + source environment after a number of bugs are fixed and + some features are added in the documentation build + process. </p> + <p>- The arity calculation is updated.</p> + <p>- The module prefix used in the function names for + bif's are removed in the generated links so the links + will look like + "http://www.erlang.org/doc/man/erlang.html#append_element-2" + instead of + "http://www.erlang.org/doc/man/erlang.html#erlang:append_element-2".</p> + <p>- Enhanced the menu positioning in the html + documentation when a new page is loaded.</p> + <p>- A number of corrections in the generation of man + pages (thanks to Sergei Golovan)</p> + <p>- The legal notice is taken from the xml book file so + OTP's build process can be used for non OTP + applications.</p> + <p> + Own Id: OTP-8343</p> + </item> + <item> + <p> + There is new <c>erlang:binary_to_term/2</c> BIF that + takes an option list. The option <c>safe</c> can be used + to prevent creation of resources that are not garbage + collected (such as atoms). (Thanks to Jayson Vantuyl.)</p> + <p> + Own Id: OTP-8367</p> + </item> + <item> + <p> + The default settings for garbage collection of binaries + has been adjusted to be less aggressive than in R13B03. + It is now also possible configure the settings for binary + GC. See the documentation for <c>spawn_opt/2-5</c>, + <c>erlang:system_info/1</c>, <c>erlang:system_flag/2</c>, + <c>process_flag/2-3</c>, <c>erlang:trace/3</c>, and the + documenation for <c>erl</c> for the new command line + options <c>+hms</c> and <c>+hmbs</c>.</p> + <p> + Own Id: OTP-8370</p> + </item> + <item> + <p> + A bug causing memory corruption in re:run() has been + corrected. (Thanks to Yamashina Hio.)</p> + <p> + Own Id: OTP-8375</p> + </item> + <item> + <p> + The <c>-Werror</c> option for <c>erlc</c> and the + compiler option <c>warnings_as_errors</c> will cause + warnings to be treated as errors. (Thanks to Christopher + Faulet.)</p> + <p> + Own Id: OTP-8382</p> + </item> + <item> + <p> + Explicit top directories in archive files are now + optional.</p> + <p> + For example, if an archive (app-vsn.ez) just contains an + app-vsn/ebin/mod.beam file, the file info for the app-vsn + and app-vsn/ebin directories are faked using the file + info from the archive file as origin. The virtual + direcories can also be listed. For short, the top + directories are virtual if they does not exist.</p> + <p> + Own Id: OTP-8387</p> + </item> + <item> + <p> + An unnecessary lock operation in os:timestamp/0 has been + eliminated, making it slightly more efficient. (Thanks to + Jonas Falkevik and Tuncer Ayaz.)</p> + <p> + Own Id: OTP-8390</p> + </item> + <item> + <p> + There is a new <c>+t</c> emulator option for changing the + maximum number of atoms. (Thanks to Julien Barbot.)</p> + <p> + Own Id: OTP-8405</p> + </item> + <item> + <p> + Fixed numerous compiler warnings generated by gcc 4.4.1 + and tile-cc 2.0.1.78377 when compiling the runtime + system.</p> + <p> + Own Id: OTP-8412</p> + </item> + <item> + <p> + <c>configure</c> learned the option + <c>--enable-m32-build</c> to force the building of a + 32-bit run-time on systems where the default C compiler + generates 64-bit executables by default.</p> + <p> + Own Id: OTP-8415</p> + </item> + <item> + <p> + HiPE now works in the 64-bit emulator on Mac OS X. + (Thanks to Geoff Cant.)</p> + <p> + Own Id: OTP-8416</p> + </item> + <item> + <p> + Improved handling of symbolic links to escripts</p> + <p> + Own Id: OTP-8417</p> + </item> + <item> + <p> + Add lock profiling tool.</p> + <p> + The Lock profiling tool, lcnt, can make use of the + internal lock statistics when the runtime system is built + with this feature enabled.</p> + <p> + This provides a mechanism to examine potential lock + bottlenecks within the runtime itself.</p> + <p> + - Add erts_debug:lock_counters({copy_save, bool()}). This + option enables or disables statistics saving for + destroyed processes and ets-tables. Enabling this might + consume a lot of memory.</p> + <p> + - Add id-numbering for lock classes which is otherwise + undefined.</p> + <p> + Own Id: OTP-8424</p> + </item> + <item> + <p> + Removed spurious options to the emulator from escript.</p> + <p> + Own Id: OTP-8427</p> + </item> + <item> + <p> + Minor documentation fixes. Mainly anchor adjustments.</p> + <p> + Own Id: OTP-8457</p> + </item> + </list> + </section> + +</section> + <section><title>Erts 5.7.4</title> <section><title>Fixed Bugs and Malfunctions</title> @@ -4264,7 +4681,7 @@ </item> <item> <p>The runtime system with SMP support did not slowly adjust - it's view of time when the system time suddenly changed.</p> + its view of time when the system time suddenly changed.</p> <p>Timeouts could sometimes timeout too early on the runtime system with SMP support.</p> <p>Own Id: OTP-6202</p> |