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authorLukas Larsson <[email protected]>2014-02-21 15:19:53 +0100
committerLukas Larsson <[email protected]>2014-02-24 15:24:07 +0100
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ose: Expand OSE docs
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-rw-r--r--lib/ose/doc/src/ose_intro.xml97
1 files changed, 95 insertions, 2 deletions
diff --git a/lib/ose/doc/src/ose_intro.xml b/lib/ose/doc/src/ose_intro.xml
index 8fe723ba83..0dd3ec409e 100644
--- a/lib/ose/doc/src/ose_intro.xml
+++ b/lib/ose/doc/src/ose_intro.xml
@@ -34,6 +34,62 @@
</section>
<section>
+ <title>Starting Erlang/OTP</title>
+ <p>
+ Starting Erlang/OTP on OSE is not as simple as on Unix/Windows (yet).
+ First of all you have to explicitly use the beam (or beam.smp) executables
+ found in erts-X.Y.Z/bin as the load module that you run. This in turn
+ means that you have to supply the raw beam arguments to the emulator
+ when starting. Fortunately <c>erl</c> on Unix/Windows has a
+ undocumented flag called <c>-emu_args_exit</c> that can be used to
+ figure out what the arguments to beam look like. For example:</p>
+ <code># erl +Mut false +A 10 +S 4:4 +Muycs256 +P 2096 +Q 2096 -emu_args_exit
+-Mut
+false
+-A
+10
+-S
+4:4
+-Muycs256
+-P
+2096
+-Q
+2096
+--
+-root
+/usr/local/lib/erlang
+-progname
+erl
+--
+-home
+/home/erlang
+--</code>
+ <p>
+ The arguments are printed on seperate lines to make it possible to know
+ what has to be quoted with &quot;. Each line is one quotable unit.
+ So taking the arguments above you can supply them to pm_create or
+ just execute directly on the command line. For example:</p>
+ <code>rtose@acp3400> pm_install erlang /mst/erlang/erts-6.0/bin/beam.smp
+rtose@acp3400> pm_create -c ARGV="-Mut false -A 10 -S 4:4 -Muycs256 -P 2096 -Q 2099 -- -root /mst/erlang -progname erl -- -home /mst/erlang --" erlang
+pid: 0x110059
+rtose@acp3400> pm_start 0x110059</code>
+ <p>
+ Also note that since we are running erl to figure out the arguments on a
+ seperate machine the paths have to be updated. In the example above
+ <c>/usr/local/lib/erlang</c> was replaced by <c>/mst/erlang/</c>. The
+ goal is to in future releases not have to do the special argument handling
+ but for now (17.0-rc2) you have to do it.
+ </p>
+ <note>
+ Because of a limitation in the way the OSE handles stdio when starting
+ load modules using pm_install/create the Erlang shell only reads every
+ other command from stdin. However if you start Erlang using run_erl
+ you do not have this problem. So it is highly recommended that you
+ start Erlang using run_erl.
+ </note>
+ </section>
+
+ <section>
<title>run_erl and to_erl</title>
<p>
In OSE run_erl and to_erl are combined into a single load module called
@@ -48,13 +104,50 @@
installing and exectuting the first part of the command. If nothing
if given the basename of the load module will be used for this value.
Example:
- <code>pm_install erlang /path/to/erlang/vm
-run_erl -daemon -block erlang /pipe/ /mst/erlang_logs/ "erl -A 10"</code>
+ <code>pm_install erlang /path/to/erlang/vm/beam.smp
+run_erl -daemon -block erlang /pipe/ /mst/erlang_logs/ "beam.smp -A 1 -- -root /mst/erlang -- -home /mst --"</code>
</item>
</taglist>
+ The same argument munching as when starting Erlang/OTP without run_erl
+ has to be done. If <c>-daemon</c> is given then all error printouts
+ are sent to the ramlog.
See also
<seealso marker="erts:run_erl">run_erl</seealso> for more details.
</p>
+ <p>
+ Below is an example of how to get started with <c>run_erl_lm</c>.
+ <code>rtose@acp3400> pm_install run_erl_lm /mst/erlang/erts-6.0/bin/run_erl_lm
+rtose@acp3400> pm_create run_erl_lm
+pid: 0x1c005d
+rtose@acp3400> pm_start 0x1c005d
+rtose@acp3400> mkdir /mst/erlang_log
+rtose@acp3400> run_erl -daemon /pipe/ /mst/erlang_log/ "/mst/erlang/erts-6.0/bin/beam.smp -A 1 -- -root /mst/erlang -- -home /mst --"
+rtose@acp3400> to_erl
+Attaching to /pipe/erlang.pipe.1 (^C to exit)
+os:type().
+{ose,release}
+2>
+'to_erl' terminated.</code>
+ Note that Ctrl-C is used instead of Ctrl-D to exit the to_erl shell.
+ </p>
+ </section>
+
+ <section>
+ <title>epmd</title>
+ <p>
+ In OSE epmd will not be started automatically so if you want to use
+ Erlang distribution you have to manually start epmd.
+ </p>
+ </section>
+
+ <section>
+ <title>VM Process Priorities</title>
+ <p>
+ It is possible to set the priorities you want for the OSE processes that
+ thr emulator creates in the lmconf. An example of how to do it can be
+ found in the default lmconf file in
+ $ERL_TOP/erts/emulator/sys/ose/default.lmconf.
+ </p>
</section>
</chapter>