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authorSverker Eriksson <[email protected]>2010-10-06 10:53:49 +0200
committerSverker Eriksson <[email protected]>2010-10-06 10:53:49 +0200
commit24524dbd7867a27ba0550dbfd2c3fafed5ae0ca5 (patch)
tree578c55bd648d3f9e8c417a2c4f07b09874589bf9 /lib/stdlib/doc/src
parent3cfec17ff7aff97c5ec862a8b9e97d245849f9c3 (diff)
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Documentation update to ETS and drivers
State more clearly that ETS functions will throw badarg if calling process lacks access right. And that driver stop callback should free memory allocted by start.
Diffstat (limited to 'lib/stdlib/doc/src')
-rw-r--r--lib/stdlib/doc/src/ets.xml22
1 files changed, 14 insertions, 8 deletions
diff --git a/lib/stdlib/doc/src/ets.xml b/lib/stdlib/doc/src/ets.xml
index dd4a289c61..702e1b928e 100644
--- a/lib/stdlib/doc/src/ets.xml
+++ b/lib/stdlib/doc/src/ets.xml
@@ -56,8 +56,8 @@
Even if there are no references to a table from any process, it
will not automatically be destroyed unless the owner process
terminates. It can be destroyed explicitly by using
- <c>delete/1</c>.</p>
- <p>Since R13B01, table ownership can be transferred at process termination
+ <c>delete/1</c>. The default owner is the process that created the
+ table. Table ownership can be transferred at process termination
by using the <seealso marker="#heir">heir</seealso> option or explicitly
by calling <seealso marker="#give_away/3">give_away/3</seealso>.</p>
<p>Some implementation details:</p>
@@ -82,11 +82,15 @@
<c>float()</c> that extends to the same value, hence the key
<c>1</c> and the key <c>1.0</c> are regarded as equal in an
<c>ordered_set</c> table.</p>
- <p>In general, the functions below will exit with reason
- <c>badarg</c> if any argument is of the wrong format, or if the
- table identifier is invalid.</p>
</description>
-
+ <section>
+ <title>Failure</title>
+ <p>In general, the functions below will exit with reason
+ <c>badarg</c> if any argument is of the wrong format, if the
+ table identifier is invalid or if the operation is denied due to
+ table access rights (<seealso marker="#protected">protected</seealso>
+ or <seealso marker="#private">private</seealso>).</p>
+ </section>
<section><marker id="concurrency"></marker>
<title>Concurrency</title>
<p>This module provides some limited support for concurrent access.
@@ -947,7 +951,7 @@ ets:select(Table,MatchSpec),</code>
<type>
<v>Name = atom()</v>
<v>Options = [Option]</v>
- <v>&nbsp;Option = Type | Access | named_table | {keypos,Pos} | {heir,pid(),HeirData} | {heir,none} | {write_concurrency,bool()}</v>
+ <v>&nbsp;Option = Type | Access | named_table | {keypos,Pos} | {heir,pid(),HeirData} | {heir,none} | {write_concurrency,bool()} | {read_concurrency,bool()}</v>
<v>&nbsp;&nbsp;Type = set | ordered_set | bag | duplicate_bag</v>
<v>&nbsp;&nbsp;Access = public | protected | private</v>
<v>&nbsp;&nbsp;Pos = int()</v>
@@ -963,7 +967,7 @@ ets:select(Table,MatchSpec),</code>
table is named or not. If one or more options are left out,
the default values are used. This means that not specifying
any options (<c>[]</c>) is the same as specifying
- <c>[set,protected,{keypos,1},{heir,none},{write_concurrency,false}]</c>.</p>
+ <c>[set,protected,{keypos,1},{heir,none},{write_concurrency,false},{read_concurrency,false}]</c>.</p>
<list type="bulleted">
<item>
<p><c>set</c>
@@ -1002,12 +1006,14 @@ ets:select(Table,MatchSpec),</code>
Any process may read or write to the table.</p>
</item>
<item>
+ <marker id="protected"></marker>
<p><c>protected</c>
The owner process can read and write to the table. Other
processes can only read the table. This is the default
setting for the access rights.</p>
</item>
<item>
+ <marker id="private"></marker>
<p><c>private</c>
Only the owner process can read or write to the table.</p>
</item>