diff options
Diffstat (limited to 'erts/doc')
| -rw-r--r-- | erts/doc/src/erl.xml | 13 | ||||
| -rw-r--r-- | erts/doc/src/erlang.xml | 46 | ||||
| -rw-r--r-- | erts/doc/src/notes.xml | 267 |
3 files changed, 323 insertions, 3 deletions
diff --git a/erts/doc/src/erl.xml b/erts/doc/src/erl.xml index 9224d73b6f..77bd952d41 100644 --- a/erts/doc/src/erl.xml +++ b/erts/doc/src/erl.xml @@ -550,6 +550,19 @@ <p>Force the <c>compressed</c> option on all ETS tables. Only intended for test and evaluation.</p> </item> + <tag><c><![CDATA[+fnl]]></c></tag> + <item> + <p>The VM works with file names as if they are encoded using the ISO-latin-1 encoding, disallowing Unicode characters with codepoints beyond 255. This is default on operating systems that have transparent file naming, i.e. all Unixes except MacOSX.</p> + </item> + <tag><c><![CDATA[+fnu]]></c></tag> + <item> + <p>The VM works with file names as if they are encoded using UTF-8 (or some other system specific Unicode encoding). This is the default on operating systems that enforce Unicode encoding, i.e. Windows and MacOSX.</p> + <p>By enabling Unicode file name translation on systems where this is not default, you open up to the possibility that some file names can not be interpreted by the VM and therefore will be returned to the program as raw binaries. The option is therefore considered experimental.</p> + </item> + <tag><c><![CDATA[+fna]]></c></tag> + <item> + <p>Selection between <c>+fnl</c> and <c>+fnu</c> is done based on the current locale settings in the OS, meaning that if you have set your terminal for UTF-8 encoding, the filesystem is expected to use the same encoding for filenames (use with care).</p> + </item> <tag><c><![CDATA[+hms Size]]></c></tag> <item> <p>Sets the default heap size of processes to the size diff --git a/erts/doc/src/erlang.xml b/erts/doc/src/erlang.xml index 638f7eef10..78d58a1e56 100644 --- a/erts/doc/src/erlang.xml +++ b/erts/doc/src/erlang.xml @@ -2781,14 +2781,17 @@ os_prompt%</pre> <name>open_port(PortName, PortSettings) -> port()</name> <fsummary>Open a port</fsummary> <type> - <v>PortName = {spawn, Command} | {spawn_driver, Command} | {spawn_executable, Command} | {fd, In, Out}</v> + <v>PortName = {spawn, Command} | {spawn_driver, Command} | {spawn_executable, FileName} | {fd, In, Out}</v> <v> Command = string()</v> + <v> FileName = [ FileNameChar ] | binary()</v> + <v> FileNameChar = int() (1..255 or any Unicode codepoint, see description)</v> <v> In = Out = int()</v> <v>PortSettings = [Opt]</v> - <v> Opt = {packet, N} | stream | {line, L} | {cd, Dir} | {env, Env} | {args, [ string() ]} | {arg0, string()} | exit_status | use_stdio | nouse_stdio | stderr_to_stdout | in | out | binary | eof</v> + <v> Opt = {packet, N} | stream | {line, L} | {cd, Dir} | {env, Env} | {args, [ ArgString ]} | {arg0, ArgString} | exit_status | use_stdio | nouse_stdio | stderr_to_stdout | in | out | binary | eof</v> <v> N = 1 | 2 | 4</v> <v> L = int()</v> <v> Dir = string()</v> + <v> ArgString = [ FileNameChar ] | binary()</v> <v> Env = [{Name, Val}]</v> <v> Name = string()</v> <v> Val = string() | false</v> @@ -2851,7 +2854,26 @@ os_prompt%</pre> executed, the appropriate command interpreter will implicitly be invoked, but there will still be no command argument expansion or implicit PATH search.</p> - + + <p>The name of the executable as well as the arguments + given in <c>args</c> and <c>arg0</c> is subject to + Unicode file name translation if the system is running + in Unicode file name mode. To avoid + translation or force i.e. UTF-8, supply the executable + and/or arguments as a binary in the correct + encoding. See the <seealso + marker="kernel:file">file</seealso> module, the + <seealso marker="kernel:file#native_name_encoding/0"> + file:native_name_encoding/0</seealso> function and the + <seealso marker="stdlib:unicode_usage">stdlib users guide + </seealso> for details.</p> + + <note>The characters in the name (if given as a list) + can only be > 255 if the Erlang VM is started in + Unicode file name translation mode, otherwise the name + of the executable is limited to the ISO-latin-1 + character set.</note> + <p>If the <c>Command</c> cannot be run, an error exception, with the posix error code as the reason, is raised. The error reason may differ between operating @@ -2954,6 +2976,21 @@ os_prompt%</pre> should not be given in this list. The proper executable name will automatically be used as argv[0] where applicable.</p> + <p>When the Erlang VM is running in Unicode file name + mode, the arguments can contain any Unicode characters and + will be translated into whatever is appropriate on the + underlying OS, which means UTF-8 for all platforms except + Windows, which has other (more transparent) ways of + dealing with Unicode arguments to programs. To avoid + Unicode translation of arguments, they can be supplied as + binaries in whatever encoding is deemed appropriate.</p> + + <note>The characters in the arguments (if given as a + list of characters) can only be > 255 if the Erlang + VM is started in Unicode file name mode, + otherwise the arguments are limited to the + ISO-latin-1 character set.</note> + <p>If one, for any reason, wants to explicitly set the program name in the argument vector, the <c>arg0</c> option can be used.</p> @@ -2969,6 +3006,9 @@ os_prompt%</pre> responds to this is highly system dependent and no specific effect is guaranteed.</p> + <p>The unicode file name translation rules of the + <c>args</c> option apply to this option as well.</p> + </item> <tag><c>exit_status</c></tag> diff --git a/erts/doc/src/notes.xml b/erts/doc/src/notes.xml index 1703ce0942..77181d3407 100644 --- a/erts/doc/src/notes.xml +++ b/erts/doc/src/notes.xml @@ -30,6 +30,273 @@ </header> <p>This document describes the changes made to the ERTS application.</p> +<section><title>Erts 5.8.2</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> Fix format_man_pages so it handles all man sections + and remove warnings/errors in various man pages. </p> + <p> + Own Id: OTP-8600</p> + </item> + <item> + <p> + The <c>configure</c> command line argument <seealso + marker="doc/installation_guide:INSTALL#How-to-Build-and-Install-ErlangOTP_A-Closer-Look-at-the-individual-Steps_Configuring">--enable-ethread-pre-pentium4-compatibility</seealso> + had no effect. This option is now also automatically + enabled if required on the build machine.</p> + <p> + Own Id: OTP-8847</p> + </item> + <item> + <p> + Windows 2003 and Windows XP pre SP3 would sometimes not + start the Erlang R14B VM at all due to a bug in the cpu + topology detection. The bug affects Windows only, no + other platform is even remotely affected. The bug is now + corrected.</p> + <p> + Own Id: OTP-8876</p> + </item> + <item> + <p> + The HiPE run-time in the 64-bit emulator could do a + 64-bit write to a 32-bit struct field. It happened to be + harmless on Intel/AMD processors. Corrected. (Thanks to + Mikael Pettersson.)</p> + <p> + Own Id: OTP-8877</p> + </item> + <item> + <p> + A bug in <seealso + marker="erl_driver#erl_drv_tsd_get">erl_drv_tsd_get()</seealso> + and <seealso + marker="erl_nif#enif_tsd_get">enif_tsd_get()</seealso> + could cause an emulator crash. These functions are + currently not used in OTP. That is, the crash only occur + on systems with user implemented NIF libraries, or + drivers that use one of these functions.</p> + <p> + Own Id: OTP-8889</p> + </item> + <item> + <p> + Calling <c>erlang:system_info({cpu_topology, + CpuTopologyType})</c> with another <c>CpuTopologyType</c> + element than one of the documented atoms <c>defined</c>, + <c>detected</c>, or <c>used</c> caused an emulator crash. + (Thanks to Paul Guyot)</p> + <p> + Own Id: OTP-8914</p> + </item> + <item> + <p> + The ERTS internal rwlock implementation could get into an + inconsistent state. This bug was very seldom triggered, + but could be during heavy contention. The bug was + introduced in R14B (erts-5.8.1).</p> + <p> + The bug was most likely to be triggered when using the + <c>read_concurrency</c> option on an ETS table that was + frequently accessed from multiple processes doing lots of + writes and reads. That is, in a situation where you + typically don't want to use the <c>read_concurrency</c> + option in the first place.</p> + <p> + Own Id: OTP-8925 Aux Id: OTP-8544 </p> + </item> + <item> + <p> + Tracing to port could cause an emulator crash when + unloading the trace driver.</p> + <p> + Own Id: OTP-8932</p> + </item> + <item> + <p> + Removed use of CancelIoEx on Windows that had been shown + to cause problems with some drivers.</p> + <p> + Own Id: OTP-8937</p> + </item> + <item> + <p> + The fallback implementation used when no native atomic + implementation was found did not compile. (Thanks to + Patrick Baggett, and Tuncer Ayaz)</p> + <p> + Own Id: OTP-8944</p> + </item> + <item> + <p> + Some integer values used during load balancing could + under rare circumstances wrap causing a load unbalance + between schedulers.</p> + <p> + Own Id: OTP-8950</p> + </item> + <item> + <p> + The windows VM now correctly handles appending to large + files (> 4GB).</p> + <p> + Own Id: OTP-8958</p> + </item> + <item> + <p> + Name resolving of IPv6 addresses has been implemented for + Windows versions that support it. The use of ancient + resolver flags (AI_V4MAPPED | AI_ADDRCONFIG) to the + getaddrinfo() function has been removed since e.g FreeBSD + regard mapped IPv4 addresses to be a security problem and + the semantics of the address configured flag is + uncertain.</p> + <p> + Own Id: OTP-8969</p> + </item> + </list> + </section> + + + <section><title>Improvements and New Features</title> + <list> + <item> + <p> + The help texts produced by the <c>configure</c> scripts + in the top directory and in the erts directory have been + aligned and cleaned up.</p> + <p> + Own Id: OTP-8859</p> + </item> + <item> + <p> + When the runtime system had fewer schedulers than logical + processors, the system could get an unnecessarily large + amount reader groups.</p> + <p> + Own Id: OTP-8861</p> + </item> + <item> + <p> + <c>run_rel</c> has been updated to support Solaris's + /dev/ptmx device and to load the necessary STREAMS + modules so that <c>to_erl</c> can provide terminal echo + of keyboard input. (Thanks to Ryan Tilder.)</p> + <p> + Own Id: OTP-8878</p> + </item> + <item> + <p> + The Erlang VM now supports Unicode filenames. The feature + is turned on by default on systems where Unicode + filenames are mandatory (Windows and MacOSX), but can be + enabled on other systems with the '+fnu' emulator option. + Enabling the Unicode filename feature on systems where it + is not default is however considered experimental and not + to be used for production. Together with the Unicode file + name support, the concept of "raw filenames" is + introduced, which means filenames provided without + implicit unicode encoding translation. Raw filenames are + provided as binaries, not lists. For further information, + see stdlib users guide and the chapter about using + Unicode in Erlang. Also see the file module manual page.</p> + <p> + *** POTENTIAL INCOMPATIBILITY ***</p> + <p> + Own Id: OTP-8887</p> + </item> + <item> + <p>Buffer overflows have been prevented in <c>erlc</c>, + <c>dialyzer</c>, <c>typer</c>, <c>run_test</c>, + <c>heart</c>, <c>escript</c>, and <c>erlexec</c>.</p> + (Thanks to Michael Santos.) + <p> + Own Id: OTP-8892</p> + </item> + <item> + <p> + The runtime system is now less eager to suspend processes + sending messages over the distribution. The default value + of the distribution buffer busy limit has also been + increased from 128 KB to 1 MB. This in order to improve + throughput.</p> + <p> + Own Id: OTP-8901</p> + </item> + <item> + <p> + The distribution buffer busy limit can now be configured + at system startup. For more information see the + documentation of the <c>erl</c> <seealso + marker="erl#+zdbbl">+zdbbl</seealso> command line flag. + (Thanks to Scott Lystig Fritchie)</p> + <p> + Own Id: OTP-8912</p> + </item> + <item> + <p> + The inet driver internal buffer stack implementation has + been rewritten in order to reduce lock contention.</p> + <p> + Own Id: OTP-8916</p> + </item> + <item> + <p> + New ETS option <c>compressed</c>, to enable a more + compact storage format at the expence of heavier table + operations. For test and evaluation, <c>erl +ec</c> can + be used to force compression on all ETS tables.</p> + <p> + Own Id: OTP-8922 Aux Id: seq11658 </p> + </item> + <item> + <p> + There is now a new function inet:getifaddrs/0 modeled + after C library function getifaddrs() on BSD and LInux + that reports existing interfaces and their addresses on + the host. This replaces the undocumented and unsupported + inet:getiflist/0 and inet:ifget/2.</p> + <p> + Own Id: OTP-8926</p> + </item> + <item> + <p> + Support for detection of CPU topology and binding of + schedulers on FreeBSD 8 have been added. (Thanks to Paul + Guyot)</p> + <p> + Own Id: OTP-8939</p> + </item> + <item> + <p> + Several bugs related to hibernate/3 and HiPE have been + corrected. (Thanks to Paul Guyot.)</p> + <p> + Own Id: OTP-8952</p> + </item> + <item> + <p> + Support for soft and hard links on Windows versions and + filesystems that support them is added.</p> + <p> + Own Id: OTP-8955</p> + </item> + <item> + <p> + The win32 virtual machine is now linked large address + aware. his allows the Erlang VM to use up to 3 gigs of + address space on Windows instead of the default of 2 + gigs.</p> + <p> + Own Id: OTP-8956</p> + </item> + </list> + </section> + +</section> + <section><title>Erts 5.8.1.2</title> <section><title>Fixed Bugs and Malfunctions</title> |