[svn-r19587] Description:

	Address issue with object headers being created getting evicted from
the metadata cache cache before they are completely initialized.  This is
done by pinning the object header in the cache until it is completely
initialized and attached to a group.

Tested on:
        FreeBSD/32 6.3 (duty) in debug mode
        FreeBSD/64 6.3 (liberty) w/C++ & FORTRAN, in debug mode
        Linux/32 2.6 (jam) w/PGI compilers, w/default API=1.8.x,
                w/C++ & FORTRAN, w/threadsafe, in debug mode
        Linux/64-amd64 2.6 (amani) w/Intel compilers, w/default API=1.6.x,
                w/C++ & FORTRAN, in production mode
        Solaris/32 2.10 (linew) w/deprecated symbols disabled, w/C++ & FORTRAN,
                w/szip filter, w/threadsafe, in production mode
        Linux/PPC 2.6 (heiwa) w/C++ & FORTRAN, w/threadsafe, in debug mode
        Linux/64-ia64 2.6 (cobalt) w/Intel compilers, w/C++ & FORTRAN,
                in production mode
        Linux/64-amd64 2.6 (abe) w/parallel, w/FORTRAN, in debug mode
        Mac OS X/32 10.6.4 (amazon) in debug mode
        Mac OS X/32 10.6.4 (amazon) w/C++ & FORTRAN, w/threadsafe,
                in production mode
        Mac OS X/32 10.6.4 (amazon) w/parallel, in debug mode

1 files changed, 49 insertions, 0 deletions

diff --git a/src/H5Otest.c b/src/H5Otest.c
index 557ac9e..883bfcd 100644
--- a/src/H5Otest.c
+++ b/src/H5Otest.c
@@ -536,3 +536,52 @@ done:
     FUNC_LEAVE_NOAPI(ret_value)
 }   /* H5O_expunge_chunks_test() */
 
+
+/*--------------------------------------------------------------------------
+ NAME
+    H5O_get_rc
+ PURPOSE
+    Retrieve the refcount for the object header
+ USAGE
+    herr_t H5O_expunge_chunks_test(loc, dxpl_id, rc)
+        const H5O_loc_t *loc;   IN: Object location for object header to query
+        hid_t dxpl_id;          IN: DXPL to use for operation
+        unsigned *rc;           OUT: Pointer to refcount for object header
+ RETURNS
+    Non-negative on success, negative on failure
+ DESCRIPTION
+    Protects object header, retrieves the object header's refcount, and
+    unprotects object header.
+ GLOBAL VARIABLES
+ COMMENTS, BUGS, ASSUMPTIONS
+    DO NOT USE THIS FUNCTION FOR ANYTHING EXCEPT TESTING
+ EXAMPLES
+ REVISION LOG
+--------------------------------------------------------------------------*/
+herr_t
+H5O_get_rc(const H5O_loc_t *loc, hid_t dxpl_id, unsigned *rc)
+{
+    H5O_t *oh = NULL;           /* Object header */
+    herr_t ret_value = SUCCEED; /* Return value */
+
+    FUNC_ENTER_NOAPI(H5O_get_rc, FAIL)
+
+    /* Sanity check */
+    HDassert(loc);
+    HDassert(rc);
+
+    /* Get the object header */
+    if(NULL == (oh = H5O_protect(loc, dxpl_id, H5AC_READ)))
+	HGOTO_ERROR(H5E_OHDR, H5E_CANTPROTECT, FAIL, "unable to protect object header")
+
+    /* Save the refcount for the object header */
+    *rc = oh->nlink;
+
+done:
+    /* Release the object header */
+    if(oh && H5O_unprotect(loc, dxpl_id, oh, H5AC__NO_FLAGS_SET) < 0)
+	HDONE_ERROR(H5E_OHDR, H5E_CANTUNPROTECT, FAIL, "unable to unprotect object header")
+
+    FUNC_LEAVE_NOAPI(ret_value)
+}   /* H5O_expunge_chunks_test() */
+