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-rw-r--r--src/H5AC.c110
1 files changed, 110 insertions, 0 deletions
diff --git a/src/H5AC.c b/src/H5AC.c
index a94a727..525f78b 100644
--- a/src/H5AC.c
+++ b/src/H5AC.c
@@ -2321,3 +2321,113 @@ H5AC_retag_copied_metadata(const H5F_t *f, haddr_t metadata_tag)
FUNC_LEAVE_NOAPI(SUCCEED)
} /* H5AC_retag_copied_metadata */
+
+/*-------------------------------------------------------------------------
+ * Function: H5AC_get_entry_ring
+ *
+ * Purpose: Given a file address, retrieve the ring for an entry at that
+ * address.
+ *
+ * On error, the value of *ring is not modified.
+ *
+ * Return: Non-negative on success/Negative on failure
+ *
+ * Programmer: Quincey Koziol
+ * 9/8/15
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5AC_get_entry_ring(const H5F_t *f, haddr_t addr, H5AC_ring_t *ring)
+{
+ herr_t ret_value = SUCCEED; /* Return value */
+
+ FUNC_ENTER_NOAPI(FAIL)
+
+ /* Sanity check */
+ HDassert(f);
+ HDassert(H5F_addr_defined(addr));
+ HDassert(ring);
+
+ /* Retrieve the ring value for the entry at address */
+ if(H5C_get_entry_ring(f, addr, ring) < 0)
+ HGOTO_ERROR(H5E_CACHE, H5E_CANTGET, FAIL, "Can't retrieve ring for entry")
+
+done:
+ FUNC_LEAVE_NOAPI(ret_value)
+} /* H5AC_get_entry_ring() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5AC_set_ring
+ *
+ * Purpose: Routine to set the ring on a DXPL (for passing through
+ * to the metadata cache).
+ *
+ * Return: Success: Non-negative
+ * Failure: Negative
+ *
+ * Programmer: Quincey Koziol
+ * Tuesday, September 8, 2015
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5AC_set_ring(hid_t dxpl_id, H5AC_ring_t ring, H5P_genplist_t **dxpl,
+ H5AC_ring_t *orig_ring)
+{
+ herr_t ret_value = SUCCEED; /* return value */
+
+ FUNC_ENTER_NOAPI(FAIL)
+
+ /* Sanity checks */
+ HDassert(dxpl);
+ HDassert(orig_ring);
+
+ /* Set the ring type in the DXPL */
+ if(NULL == ((*dxpl) = (H5P_genplist_t *)H5I_object_verify(dxpl_id, H5I_GENPROP_LST)))
+ HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a property list")
+ if((H5P_get((*dxpl), H5AC_RING_NAME, orig_ring)) < 0)
+ HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "unable to get original ring value")
+ if((H5P_set((*dxpl), H5AC_RING_NAME, &ring)) < 0)
+ HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "unable to set ring value")
+
+done:
+ FUNC_LEAVE_NOAPI(ret_value)
+} /* end H5AC_set_ring() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5AC_reset_ring
+ *
+ * Purpose: Routine to reset the original ring on a DXPL (after passing
+ * through to the metadata cache).
+ *
+ * Return: Success: Non-negative
+ * Failure: Negative
+ *
+ * Programmer: Quincey Koziol
+ * Tuesday, September 8, 2015
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5AC_reset_ring(H5P_genplist_t *dxpl, H5AC_ring_t orig_ring)
+{
+ herr_t ret_value = SUCCEED; /* return value */
+
+ FUNC_ENTER_NOAPI(FAIL)
+
+ /* Reset the ring in the DXPL, if it's been changed */
+ if(orig_ring) {
+ /* Sanity check */
+ HDassert(dxpl);
+
+ if((H5P_set(dxpl, H5AC_RING_NAME, &orig_ring)) < 0)
+ HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "unable to set property value")
+ } /* end if */
+
+done:
+ FUNC_LEAVE_NOAPI(ret_value)
+} /* end H5AC_reset_ring() */
+