From 134a692a8365ab5f196155298b6b601889c80a32 Mon Sep 17 00:00:00 2001
From: Quincey Koziol <koziol@hdfgroup.org>
Date: Tue, 7 Oct 2003 10:27:19 -0500
Subject: [svn-r7561] Purpose:     Feature add

Description:
    Add a few new fields to the H5G_stat_t structure, to allow more information
about the object header to be retrieved.

Platforms tested:
    FreeBSD 4.9 (sleipnir)
    h5committest
---
 doc/html/RM_H5G.html | 34 +++++++++++++++++++++++++++++++++-
 1 file changed, 33 insertions(+), 1 deletion(-)

diff --git a/doc/html/RM_H5G.html b/doc/html/RM_H5G.html
index 88fa534..4ec64bf 100644
--- a/doc/html/RM_H5G.html
+++ b/doc/html/RM_H5G.html
@@ -468,7 +468,8 @@ create or access function.
         The existence of an object can be tested by calling this function 
         with a null <code>statbuf</code>.
         <p>
-        <code>H5Gget_objinfo</code> fills in the following data structure:
+        <code>H5Gget_objinfo</code> fills in the following data structure
+        (defined in H5Gpublic.h):
         <pre>
                   typedef struct H5G_stat_t {
                       unsigned long fileno[2];
@@ -477,8 +478,20 @@ create or access function.
                       int type;
                       time_t mtime; 
                       size_t linklen;
+                      H5O_stat_t ohdr;
                   } H5G_stat_t
         </pre>
+
+        where H5O_stat_t (defined in H5Opublic.h) is:
+
+        <pre>
+                  typedef struct H5O_stat_t {
+                      hsize_t size;
+                      hsize_t free;
+                      unsigned nmesgs;
+                      unsigned nchunks;
+                  } H5O_stat_t
+        </pre>
         The <code>fileno</code> and <code>objno</code> fields contain 
         four values which uniquely itentify an object among those 
         HDF5 files which are open: if all four values are the same 
@@ -497,17 +510,36 @@ create or access function.
         the object or zero when information is being returned about a 
         symbolic link (symbolic links do not have hard links but 
         all other objects always have at least one).  
+        <p>
         The <code>type</code> field contains the type of the object, 
         one of 
 		<code>H5G_GROUP</code>, 
 		<code>H5G_DATASET</code>,
         	<code>H5G_LINK</code>, or
         	<code>H5G_TYPE</code>.  
+        <p>
         The <code>mtime</code> field contains the modification time.
+        <p>
         If information is being returned about a symbolic link then 
         <code>linklen</code> will be the length of the link value 
         (the name of the pointed-to object with the null terminator);
         otherwise <code>linklen</code> will be zero.  
+        <p>
+        The fields in the <code>H5O_stat_t</code> struct contain information
+        about the object header for the object queried:
+            <ul><dl>
+                <dt><code>size</code>
+                <dd>The total size of all the object header information in
+                    the file (for all chunks).
+                <dt><code>free</code>
+                <dd>The size of unused space in the object header.
+                <dt><code>nmesgs</code>
+                <dd>The number of object header messages.
+                <dt><code>nchunks</code>
+                <dd>The number of chunks the object header is broken up into.
+            </dl> </ul>
+
+        <p>
         Other fields may be added to this structure in the future.
   <dt><strong>Note:</strong>
     <dd>Some systems will be able to record the time accurately but
-- 
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