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authorRaimo Niskanen <[email protected]>2018-04-16 11:07:04 +0200
committerRaimo Niskanen <[email protected]>2018-04-17 08:57:42 +0200
commit549f6b20ef9c881d8c186739207be69cd8d2f7f7 (patch)
treec9c410de70cb80c33a55a2fac4b5c19fb572589a /system/doc
parentb2a68e1e20b9ae41490e5d2777ed5c4f1147b26b (diff)
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Fix after feedback on 'When to use'
Diffstat (limited to 'system/doc')
-rw-r--r--system/doc/design_principles/statem.xml23
1 files changed, 11 insertions, 12 deletions
diff --git a/system/doc/design_principles/statem.xml b/system/doc/design_principles/statem.xml
index c44f240098..ed6338e306 100644
--- a/system/doc/design_principles/statem.xml
+++ b/system/doc/design_principles/statem.xml
@@ -93,10 +93,10 @@ State(S) x Event(E) -> Actions(A), State(S')</pre>
</p>
<list type="bulleted">
<item>
- Gathered callback code for each state,
+ Co-located callback code for each state,
regardless of
- <seealso marker="#Event Types">Event Types</seealso>.
- (such as <em>calls</em>, <em>casts</em> and <em>infos</em>)
+ <seealso marker="#Event Types">Event Type</seealso>
+ (such as <em>call</em>, <em>cast</em> and <em>info</em>)
</item>
<item>
<seealso marker="#Postponing Events">
@@ -114,15 +114,14 @@ State(S) x Event(E) -> Actions(A), State(S')</pre>
<seealso marker="#State Enter Calls">
State Enter Calls
</seealso>
- (callback on state entry gathered with the rest
+ (callback on state entry co-located with the rest
of the state callback code)
</item>
<item>
- Higher level timeouts
- (
- <seealso marker="#State Time-Outs">State Time-Outs</seealso>,
+ Easy-to-use timeouts
+ (<seealso marker="#State Time-Outs">State Time-Outs</seealso>,
<seealso marker="#Event Time-Outs">Event Time-Outs</seealso>
- or
+ and
<seealso marker="#Generic Time-Outs">Generic Time-outs</seealso>
(named time-outs))
</item>
@@ -133,14 +132,14 @@ State(S) x Event(E) -> Actions(A), State(S')</pre>
<seealso marker="stdlib:gen_server"><c>gen_server</c></seealso>.
</p>
<p>
- For simple state machines not needing these fetures
+ For simple state machines not needing these features
<seealso marker="stdlib:gen_server"><c>gen_server</c></seealso>
works just fine.
It also has got smaller call overhead,
but we are talking about something like 2 vs 3.3 microseconds
call roundtrip time here, so if the server callback
does just a little bit more than just replying,
- or if the callback is not extremely frequent,
+ or if the call is not extremely frequent,
that difference will be hard to notice.
</p>
</section>
@@ -256,7 +255,7 @@ State(S) x Event(E) -> Actions(A), State(S')</pre>
With <c>state_functions</c>, you are restricted to use
atom-only states, and the <c>gen_statem</c> engine
branches depending on state name for you.
- This encourages the callback module to gather
+ This encourages the callback module to co-locate
the implementation of all event actions particular
to one state in the same place in the code,
hence to focus on one state at the time.
@@ -1686,7 +1685,7 @@ open(state_timeout, lock, Data) ->
It can sometimes be beneficial to be able to generate events
to your own state machine.
This can be done with the
- <seealso marker="#State Transition Action">
+ <seealso marker="#State Transition Actions">
State Transition Action
</seealso>
<c>{next_event,EventType,EventContent}</c>.