philipp/hdf5
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[svn-r8877]

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Purpose:
Bug Fix

Description:
If an HDF5 file grows larger than its address space, it dies and is unable to
write any data.  This is more likely to happen since users are able to change
the number of bytes used to store addresses in the file.

Solution:
HDF5 now throws an error instead of dying.  In addition, it "reserves" address
space for the local heap and for object headers (which do not allocate space
immediately).  This ensures that after the error occurs, there is enough address
space left to flush the entire file to disk, so no data is lost.
A more complete explanation is at /doc/html/TechNotes/ReservedFileSpace.html

Platforms tested:
sleipnir, copper (parallel), verbena, arabica, Windows (Visual Studio 7)


Solution:

Platforms tested:

Misc. update:
This commit is contained in:
James Laird
2004-07-14 14:34:24 -05:00
parent 769ee96c1f
commit a0c466cd99
17 changed files with 257 additions and 25 deletions
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5
doc/html/TechNotes.html
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@@ -247,6 +247,11 @@ HDF5 Technical Notes  
Description of various aspects of using variable-length datatypes in HDF5.
</td></tr>
<tr><td valign=top><a href="TechNotes/ReservedFileSpace.html">Reserved File Address Space</a>
</td><td>&nbsp;</td><td valign=top>
Description of HDF5's internal system for ensuring that files stay within their address space.
</td></tr>
</table>
</center>