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[svn-r8525] Purpose:

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Update information about modification time message.
This commit is contained in:
Quincey Koziol 2004-05-13 23:27:23 -05:00
parent 13b94ce1e2
commit 77a7fc4428
1 changed files with 73 additions and 3 deletions
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doc/html/H5.format.html
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@ -124,13 +124,14 @@ TABLE.list TD { border:none; }
<li><a href="#LayoutMessage">Name: Data Storage - Layout</a> <!-- 0x0008 -->
<li><a href="#ReservedMessage_0009">Name: Reserved - not assigned yet</a> <!-- 0x0009 -->
<li><a href="#ReservedMessage_000A">Name: Reserved - not assigned yet</a> <!-- 0x000a -->
<li><a href="#FilterMessage">Name: Data Storage - Filter Pipeline</a> <!-- 0x000b -->
<li><a href="#FilterMessage">Name: Data Storage - Filter Pipeline</a> <!-- 0x000b -->
<li><a href="#AttributeMessage">Name: Attribute</a> <!-- 0x000c -->
<li><a href="#NameMessage">Name: Object Name</a> <!-- 0x000d -->
<li><a href="#ModifiedMessage">Name: Object Modification Date and Time</a> <!-- 0x000e -->
<li><a href="#OldModifiedMessage">Name: Object Modification Date and Time (Old)</a> <!-- 0x000e -->
<li><a href="#SharedMessage">Name: Shared Object Message</a> <!-- 0x000f -->
<li><a href="#ContinuationMessage">Name: Object Header Continuation</a> <!-- 0x0010 -->
<li><a href="#SymbolTableMessage">Name: Group Message</a> <!-- 0x0011 -->
<li><a href="#ModifiedMessage">Name: Object Modification Date and Time</a> <!-- 0x0012 -->
</ol>
<li><a href="#SharedObjectHeader">Disk Format: Level 2b - Shared Data Object Headers</a>
<li><a href="#DataStorage">Disk Format: Level 2c - Data Object Data Storage</a>
@ -5213,7 +5214,7 @@ TABLE.list TD { border:none; }
</center>
<hr>
<h4><a name="ModifiedMessage">Name: Object Modification Date &amp; Time</a></h4>
<h4><a name="OldModifiedMessage">Name: Object Modification Date &amp; Time (Old)</a></h4>
<p><b>Header Message Type:</b> 0x000E<br>
<b>Length:</b> fixed<br>
@ -5502,6 +5503,75 @@ where the group name heap is located.
</dl>
</dl>
<hr>
<h4><a name="ModifiedMessage">Name: Object Modification Date &amp; Time</a></h4>
<P class=item><B>Header Message Type:</B> 0x0012
</P>
<P class=item><B>Length:</B> Fixed
</P>
<P class=item><B>Status:</B> Optional, may not be repeated.
</P>
<P class=item><B>Description:</B> The object modification date
and time is a timestamp which indicates
the last modification of an object. The time is
updated when any object header message changes according to the
system clock where the change was posted.
</P>
<p>
<center>
<table border align=center cellpadding=4 width="80%">
<caption align=top>
<b>Modification Time Message</b>
</caption>
<tr align=center>
<th width="25%">byte</th>
<th width="25%">byte</th>
<th width="25%">byte</th>
<th width="25%">byte</th>
</tr>
<tr align=center>
<td colspan=1>Version</td>
<td colspan=3>Reserved</td>
</tr>
<tr align=center>
<td colspan=4>Seconds After Epoch</td>
</tr>
</table>
</center>
<p>
<center>
<table align=center width="80%">
<tr align=left>
<th width="30%"><U><font size=+1>Field Name</font></U></th>
<th><U><font size=+1>Description</font></U></th>
</tr>
<tr valign=top>
<td>Version</td>
<td>The version number for the message. This document
describes version one of the new modification time message.</td>
</tr>
<tr valign=top>
<td>Reserved</td>
<td>This field is reserved and should always be zero.</td>
</tr>
<tr valign=top>
<td>Seconds After Epoch</td>
<td>The number of seconds since 0 hours, 0
minutes, 0 seconds, January 1, 1970, Coordinated Universal Time.
</tr>
</table>
</center>
<h3><a name="SharedObjectHeader">Disk Format: Level 2b - Shared Data Object Headers</a></h3>
<P>In order to share header messages between several dataset objects, object
header messages may be placed into the global heap. Since these