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diff --git a/erts/doc/src/notes.xml b/erts/doc/src/notes.xml index d38f29b8d1..412675fd2b 100644 --- a/erts/doc/src/notes.xml +++ b/erts/doc/src/notes.xml @@ -32,6 +32,288 @@ <p>This document describes the changes made to the ERTS application.</p> +<section><title>Erts 8.1</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + Fix bug for calls from hipe code to BIFs that disable GC + while yielding. Has been causing Dialyzer crashes on ARM + (and presumably all other non-intel platforms).</p> + <p> + Own Id: OTP-13724 Aux Id: PR-1116 </p> + </item> + <item> + <p> + Fix a bug where changing the current working directory of + the VM would not change the current working directory of + programs spawned using <c>erlang:open_port({spawn,""}, + ...)</c>.</p> + <p> + Own Id: OTP-13733 Aux Id: ERL-175 </p> + </item> + <item> + <p> + Fix a bug where disabling tracing from a process that had + return_to tracing enabled and was tracing on + <c>erlang:trace/3</c> would cause a segmentation fault.</p> + <p> + Own Id: OTP-13734</p> + </item> + <item> + <p> + Update all erts documentation to use simpler English, use + consistent terminology and be easier to navigate.</p> + <p> + Own Id: OTP-13740</p> + </item> + <item> + <p> + Add dirty schedulers to the microstate accounting + statistics.</p> + <p> + Own Id: OTP-13744</p> + </item> + <item> + <p> + Fixed dirty scheduler build support on 32-bit windows.</p> + <p> + Own Id: OTP-13759</p> + </item> + <item> + <p> + inet:getstat(Socket) on an SCTP socket returned 0 for + send stats. This bug has now been corrected. Reported by + systra as issue ERL-102 on bugs.erlang.org.</p> + <p> + Own Id: OTP-13773 Aux Id: ERL-102 </p> + </item> + <item> + <p> + AF_UNSPEC and unknown address families were misread by + UDP receive in prim_inet resulting in an exception. This + bug has now been corrected.</p> + <p> + Own Id: OTP-13775</p> + </item> + <item> + <p> + Sweep HiPE stack for literals during code purge.</p> + <p> + Own Id: OTP-13777 Aux Id: PR-1122 </p> + </item> + <item> + <p> + Fix bug in run_erl for OpenBSD that could cause it on + rare occations to exit without starting the program (erl) + at all.</p> + <p> + Own Id: OTP-13795</p> + </item> + <item> + <p> + Update build scripts to not make assumtions about where + env, cp and perl are located.</p> + <p> + Own Id: OTP-13800</p> + </item> + <item> + <p> + Fixed a bug where init:stop could deadlock if a process + with infinite shutdown timeout (e.g. a supervisor) + attempted to load code while terminating.</p> + <p> + Own Id: OTP-13802</p> + </item> + <item> + <p> + Fixed a segmentation fault on sparc CPUs when free'ing a + tracer module's state.</p> + <p> + Own Id: OTP-13803</p> + </item> + <item> + <p> + <c>fun</c>s was not properly handled during purge of a + module. This could cause a crash of the VM after a purge + of a module.</p> + <p> + Own Id: OTP-13809</p> + </item> + <item> + <p> + Fixed a memory leak when the process monitoring a port + crashed.</p> + <p> + Own Id: OTP-13818</p> + </item> + <item> + <p> + Fixed multiple dirty scheduler related tracing bugs.</p> + <p> + Own Id: OTP-13822</p> + </item> + <item> + <p> + Fix error handling in beam code runtime loader for a + number of cases when index and size fields got corrupted + (negative) values.</p> + <p> + Own Id: OTP-13848 Aux Id: ERL-216 </p> + </item> + <item> + <p> + Minor fix of dirty scheduler implementation.</p> + <p> + Own Id: OTP-13852</p> + </item> + <item> + <p> + Calls to <c>erl_drv_send_term()</c> or + <c>erl_drv_output_term()</c> from a non-scheduler thread + while the corresponding port was invalid caused the + emulator to enter an inconsistent state which eventually + caused an emulator crash.</p> + <p> + Own Id: OTP-13866</p> + </item> + <item> + <p> + Fix a rare race condition in <c>erlang:open_port({spawn, + ""}, ...)</c> that would result in the erl_child_setup + program aborting and cause the emulator to exit.</p> + <p> + Own Id: OTP-13868</p> + </item> + <item> + <p>Driver and NIF operations accessing processes or ports + could cause an emulator crash when used from + non-scheduler threads. Those operations are:</p> <list> + <item><c>erl_drv_send_term()</c></item> + <item><c>driver_send_term()</c></item> + <item><c>erl_drv_output_term()</c></item> + <item><c>driver_output_term()</c></item> + <item><c>enif_send()</c></item> + <item><c>enif_port_command()</c></item> </list> + <p> + Own Id: OTP-13869</p> + </item> + <item> + <p> + Fix start scripts generation dependency in Makefile</p> + <p> + Own Id: OTP-13871 Aux Id: ERL-241 </p> + </item> + <item> + <p> + The VM could crash if <c>erlang:get_stacktrace()</c> was + called after a rescheduled NIF had thrown an exception.</p> + <p> + Own Id: OTP-13877</p> + </item> + <item> + <p>Calling <c>code:delete/1</c> before a loading a module + with an on_load function, the old code would be + overwritten, causing a memory or a crash if NIFs were + involved. (Thanks to vans163 for reporting this bug.)</p> + <p> + Own Id: OTP-13893 Aux Id: ERL-240 </p> + </item> + </list> + </section> + + + <section><title>Improvements and New Features</title> + <list> + <item> + <p> + Improved accuracy of timeouts on MacOS X. This by setting + premature timeouts followed by a short actual timeout + during scheduler wait.</p> + <p> + Own Id: OTP-13698</p> + </item> + <item> + <p>Added the following symbolic time unit representations + to the <seealso + marker="erlang#type-time_unit"><c>erlang:time_unit()</c></seealso> + type:</p> <list> <item><c>second</c></item> + <item><c>millisecond</c></item> + <item><c>microsecond</c></item> + <item><c>nanosecond</c></item> </list> <p>The following + symbolic time unit representations are now + <em>deprecated</em>, but still part of the + <c>erlang:time_unit()</c> type:</p> <list> + <item><c>seconds</c></item> + <item><c>milli_seconds</c></item> + <item><c>micro_seconds</c></item> + <item><c>nano_seconds</c></item> </list> + <p> + Own Id: OTP-13735</p> + </item> + <item> + <p> + Fix maps hashing entropy of maps with maps keys.</p> + <p> + Own Id: OTP-13763 Aux Id: ERL-199 </p> + </item> + <item> + <p> + Improved dirty scheduler support. A purge of a module can + now be performed without having to wait for completion of + all ongoing dirty NIF calls.</p> + <p> + Note that when enabling support for dirty schedulers, a + new purge strategy will as of ERTS version 8.1 be + enabled. This new strategy is not fully backwards + compatible with the strategy used by default. For more + information see the documentation of <seealso + marker="erts:erlang#check_process_code/3"><c>erlang:check_process_code/3</c></seealso>.</p> + <p> + Own Id: OTP-13808 Aux Id: OTP-13833 </p> + </item> + <item> + <p> + A new purge strategy has been introduced. The new + strategy will by default be disabled during the OTP 19 + release, but will be the only strategy available as of + the OTP 20 release.</p> + <p> + The new strategy is slightly incompatible with the + strategy being used by default in OTP 19. Using the + default strategy, processes holding <c>fun</c>s that + refer to the module being purged either fail a soft + purge, or will be killed during a hard purge. The new + strategy completely ignores <c>fun</c>s. If <c>fun</c>s + referring to the code being purged exist, and are used + after a purge, an exception will be raised upon usage. + That is, the behavior will be exactly the same as the + case when a <c>fun</c> is received by a process after the + purge.</p> + <p> + The new strategy can optionally be enabled when building + OTP during OTP 19, and will automatically be enabled if + the runtime system is built with support for dirty + schedulers.</p> + <p> + For more information see the documentation of <seealso + marker="erts:erlang#check_process_code/3"><c>erlang:check_process_code/3</c></seealso>.</p> + <p> + Own Id: OTP-13833</p> + </item> + <item> + <p> + Fixed unnecessary overestimation of heap size need during + garbage collection.</p> + <p> + Own Id: OTP-13851</p> + </item> + </list> + </section> + +</section> + <section><title>Erts 8.0.5</title> <section><title>Fixed Bugs and Malfunctions</title> |