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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="#LayoutMessage">Name: Data Storage - Layout</a> <!-- 0x0008 -->
<li><a href="#ReservedMessage_0009">Name: Reserved - not assigned yet</a> <!-- 0x0009 --> <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="#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="#AttributeMessage">Name: Attribute</a> <!-- 0x000c -->
<li><a href="#NameMessage">Name: Object Name</a> <!-- 0x000d --> <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="#SharedMessage">Name: Shared Object Message</a> <!-- 0x000f -->
<li><a href="#ContinuationMessage">Name: Object Header Continuation</a> <!-- 0x0010 --> <li><a href="#ContinuationMessage">Name: Object Header Continuation</a> <!-- 0x0010 -->
<li><a href="#SymbolTableMessage">Name: Group Message</a> <!-- 0x0011 --> <li><a href="#SymbolTableMessage">Name: Group Message</a> <!-- 0x0011 -->
<li><a href="#ModifiedMessage">Name: Object Modification Date and Time</a> <!-- 0x0012 -->
</ol> </ol>
<li><a href="#SharedObjectHeader">Disk Format: Level 2b - Shared Data Object Headers</a> <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> <li><a href="#DataStorage">Disk Format: Level 2c - Data Object Data Storage</a>
@ -5213,7 +5214,7 @@ TABLE.list TD { border:none; }
</center> </center>
<hr> <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> <p><b>Header Message Type:</b> 0x000E<br>
<b>Length:</b> fixed<br> <b>Length:</b> fixed<br>
@ -5502,6 +5503,75 @@ where the group name heap is located.
</dl> </dl>
</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> <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 <P>In order to share header messages between several dataset objects, object
header messages may be placed into the global heap. Since these header messages may be placed into the global heap. Since these