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-rw-r--r--lib/kernel/doc/src/code.xml44
1 files changed, 43 insertions, 1 deletions
diff --git a/lib/kernel/doc/src/code.xml b/lib/kernel/doc/src/code.xml
index 3143cdc825..878a450f0f 100644
--- a/lib/kernel/doc/src/code.xml
+++ b/lib/kernel/doc/src/code.xml
@@ -258,7 +258,7 @@ zip:create("mnesia-4.4.7.ez",
both strings and atoms, but a future release will probably only allow
the arguments that are documented.</p>
- <p>As from Erlang/OTP R12B, functions in this module generally fail with an
+ <p>Functions in this module generally fail with an
exception if they are passed an incorrect type (for example, an integer or a tuple
where an atom is expected). An error tuple is returned if the argument type
is correct, but there are some other errors (for example, a non-existing directory
@@ -899,6 +899,48 @@ rpc:call(Node, code, load_binary, [Module, Filename, Binary]),
</desc>
</func>
<func>
+ <name name="module_status" arity="1"/>
+ <fsummary>Return the status of the module in relation to object file on disk.</fsummary>
+ <desc>
+ <p>Returns:</p>
+ <taglist>
+ <tag><c>not_loaded</c></tag>
+ <item><p>If <c><anno>Module</anno></c> is not currently loaded.</p></item>
+ <tag><c>loaded</c></tag>
+ <item><p>If <c><anno>Module</anno></c> is loaded and the object file
+ exists and contains the same code.</p></item>
+ <tag><c>removed</c></tag>
+ <item><p>If <c><anno>Module</anno></c> is loaded but no
+ corresponding object file can be found in the code path.</p></item>
+ <tag><c>modified</c></tag>
+ <item><p>If <c><anno>Module</anno></c> is loaded but the object file
+ contains code with a different MD5 checksum.</p></item>
+ </taglist>
+ <p>Preloaded modules are always reported as <c>loaded</c>, without
+ inspecting the contents on disk. Cover compiled modules will always
+ be reported as <c>modified</c> if an object file exists, or as
+ <c>removed</c> otherwise. Modules whose load path is an empty string
+ (which is the convention for auto-generated code) will only be
+ reported as <c>loaded</c> or <c>not_loaded</c>.</p>
+ <p>For modules that have native code loaded (see
+ <seealso marker="#is_module_native/1"><c>is_module_native/1</c></seealso>),
+ the MD5 sum of the native code in the object file is used for the
+ comparison, if it exists; the Beam code in the file is ignored.
+ Reversely, for modules that do not currently have native code
+ loaded, any native code in the file will be ignored.</p>
+ <p>See also <seealso marker="#modified_modules/0"><c>modified_modules/0</c></seealso>.</p>
+ </desc>
+ </func>
+ <func>
+ <name name="modified_modules" arity="0"/>
+ <fsummary>Return a list of all modules modified on disk.</fsummary>
+ <desc>
+ <p>Returns the list of all currently loaded modules for which
+ <seealso marker="#module_status/1"><c>module_status/1</c></seealso>
+ returns <c>modified</c>. See also <seealso marker="#all_loaded/0"><c>all_loaded/0</c></seealso>.</p>
+ </desc>
+ </func>
+ <func>
<name name="is_module_native" arity="1"/>
<fsummary>Test if a module has native code.</fsummary>
<desc>