[svn-r16630] Description:

	Add 'notify' callback to metadata cache clients, so that they can be
aware when the cache has taken/will take certain actions.  Notifications are
urrently limited to when an entry has successfully entered the cache (via an
insertion or a load from the file) and when an entry is about to be evicted
from the cache.

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/C++ & FORTRAN, w/threadsafe,
                                in debug mode
        Linux/64-amd64 2.6 (smirom) 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, in production mode
        Linux/64-ia64 2.6 (cobalt) w/Intel compilers, w/C++ & FORTRAN,
                                in production mode
        Linux/64-ia64 2.4 (tg-login3) w/parallel, w/FORTRAN, in production mode
        Linux/64-amd64 2.6 (abe) w/parallel, w/FORTRAN, in production mode
        Mac OS X/32 10.5.6 (amazon) in debug mode
        Mac OS X/32 10.5.6 (amazon) w/C++ & FORTRAN, w/threadsafe,
                                in production mode

38 files changed, 132 insertions, 33 deletions

diff --git a/src/H5AC.c b/src/H5AC.c
index 5ccf3d7..e04c6f3 100644
--- a/src/H5AC.c
+++ b/src/H5AC.c
@@ -1273,12 +1273,12 @@ done:
  */
 
 herr_t
-H5AC_set(H5F_t *f, hid_t dxpl_id, const H5AC_class_t *type, haddr_t addr, void *thing, unsigned int flags)
+H5AC_set(H5F_t *f, hid_t dxpl_id, const H5AC_class_t *type, haddr_t addr,
+    void *thing, unsigned int flags, void *udata)
 {
     herr_t		result;
     H5AC_info_t        *info;
     H5AC_t             *cache;
-    herr_t ret_value=SUCCEED;      /* Return value */
 #ifdef H5_HAVE_PARALLEL
     H5AC_aux_t        * aux_ptr = NULL;
 #endif /* H5_HAVE_PARALLEL */
@@ -1287,6 +1287,7 @@ H5AC_set(H5F_t *f, hid_t dxpl_id, const H5AC_class_t *type, haddr_t addr, void *
     size_t              trace_entry_size = 0;
     FILE *        	trace_file_ptr = NULL;
 #endif /* H5AC__TRACE_FILE_ENABLED */
+    herr_t ret_value = SUCCEED;      /* Return value */
 
     FUNC_ENTER_NOAPI(H5AC_set, FAIL)
 
@@ -1355,7 +1356,8 @@ H5AC_set(H5F_t *f, hid_t dxpl_id, const H5AC_class_t *type, haddr_t addr, void *
                               type,
                               addr,
                               thing,
-                              flags);
+                              flags,
+                              udata);
 
     if ( result < 0 ) {
 
diff --git a/src/H5ACprivate.h b/src/H5ACprivate.h
index b84142a..55d47f4 100644
--- a/src/H5ACprivate.h
+++ b/src/H5ACprivate.h
@@ -118,6 +118,9 @@ typedef enum {
  *
  * CLEAR:	Just marks object as non-dirty.
  *
+ * NOTIFY:	Notify client that an action on an entry has taken/will take
+ *              place
+ *
  * SIZE:	Report the size (on disk) of the specified cache object.
  *		Note that the space allocated on disk may not be contiguous.
  */
@@ -126,10 +129,16 @@ typedef enum {
 #define H5AC_CALLBACK__SIZE_CHANGED_FLAG	H5C_CALLBACK__SIZE_CHANGED_FLAG
 #define H5AC_CALLBACK__RENAMED_FLAG             H5C_CALLBACK__RENAMED_FLAG
 
+/* Aliases for 'notify action' type & values */
+typedef H5C_notify_action_t     H5AC_notify_action_t;
+#define H5AC_NOTIFY_ACTION_AFTER_INSERT H5C_NOTIFY_ACTION_AFTER_INSERT
+#define H5AC_NOTIFY_ACTION_BEFORE_EVICT H5C_NOTIFY_ACTION_BEFORE_EVICT
+
 typedef H5C_load_func_t		H5AC_load_func_t;
 typedef H5C_flush_func_t	H5AC_flush_func_t;
 typedef H5C_dest_func_t		H5AC_dest_func_t;
 typedef H5C_clear_func_t	H5AC_clear_func_t;
+typedef H5C_notify_func_t	H5AC_notify_func_t;
 typedef H5C_size_func_t		H5AC_size_func_t;
 
 typedef H5C_class_t		H5AC_class_t;
@@ -277,7 +286,7 @@ H5_DLL herr_t H5AC_create(const H5F_t *f, H5AC_cache_config_t *config_ptr);
 H5_DLL herr_t H5AC_get_entry_status(H5F_t * f, haddr_t addr,
 				    unsigned * status_ptr);
 H5_DLL herr_t H5AC_set(H5F_t *f, hid_t dxpl_id, const H5AC_class_t *type,
-                       haddr_t addr, void *thing, unsigned int flags);
+    haddr_t addr, void *thing, unsigned int flags, void *udata);
 H5_DLL herr_t H5AC_pin_protected_entry(H5F_t * f, void *  thing);
 H5_DLL herr_t H5AC_create_flush_dependency(H5F_t *f, void *parent_thing,
     void *child_thing);
diff --git a/src/H5B.c b/src/H5B.c
index 254183f..e0f228a 100644
--- a/src/H5B.c
+++ b/src/H5B.c
@@ -257,7 +257,7 @@ H5B_create(H5F_t *f, hid_t dxpl_id, const H5B_class_t *type, void *udata,
     /*
      * Cache the new B-tree node.
      */
-    if (H5AC_set(f, dxpl_id, H5AC_BT, *addr_p, bt, H5AC__NO_FLAGS_SET) < 0)
+    if(H5AC_set(f, dxpl_id, H5AC_BT, *addr_p, bt, H5AC__NO_FLAGS_SET, NULL) < 0)
 	HGOTO_ERROR(H5E_BTREE, H5E_CANTINIT, FAIL, "can't add B-tree root node to cache")
 #ifdef H5B_DEBUG
     H5B_assert(f, dxpl_id, *addr_p, shared->type, udata);
@@ -713,7 +713,7 @@ H5B_insert(H5F_t *f, hid_t dxpl_id, const H5B_class_t *type, haddr_t addr,
     HDmemcpy(H5B_NKEY(new_bt,shared,2), rt_key, shared->type->sizeof_nkey);
 
     /* Insert the modified copy of the old root into the file again */
-    if (H5AC_set(f, dxpl_id, H5AC_BT, addr, new_bt, H5AC__NO_FLAGS_SET) < 0)
+    if(H5AC_set(f, dxpl_id, H5AC_BT, addr, new_bt, H5AC__NO_FLAGS_SET, NULL) < 0)
         HGOTO_ERROR(H5E_BTREE, H5E_CANTFLUSH, FAIL, "unable to flush old B-tree root node")
 
 #ifdef H5B_DEBUG
diff --git a/src/H5B2.c b/src/H5B2.c
index 45bfff0..94b10f2 100644
--- a/src/H5B2.c
+++ b/src/H5B2.c
@@ -137,7 +137,7 @@ H5B2_create(H5F_t *f, hid_t dxpl_id, const H5B2_class_t *type,
 	HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "file allocation failed for B-tree header")
 
     /* Cache the new B-tree node */
-    if(H5AC_set(f, dxpl_id, H5AC_BT2_HDR, *addr_p, bt2, H5AC__NO_FLAGS_SET) < 0)
+    if(H5AC_set(f, dxpl_id, H5AC_BT2_HDR, *addr_p, bt2, H5AC__NO_FLAGS_SET, NULL) < 0)
 	HGOTO_ERROR(H5E_BTREE, H5E_CANTINIT, FAIL, "can't add B-tree header to cache")
 
 done:
diff --git a/src/H5B2cache.c b/src/H5B2cache.c
index 903b4f3..c44820a 100644
--- a/src/H5B2cache.c
+++ b/src/H5B2cache.c
@@ -94,6 +94,7 @@ const H5AC_class_t H5AC_BT2_HDR[1] = {{
     (H5AC_flush_func_t)H5B2_cache_hdr_flush,
     (H5AC_dest_func_t)H5B2_cache_hdr_dest,
     (H5AC_clear_func_t)H5B2_cache_hdr_clear,
+    (H5AC_notify_func_t)NULL,
     (H5AC_size_func_t)H5B2_cache_hdr_size,
 }};
 
@@ -104,6 +105,7 @@ const H5AC_class_t H5AC_BT2_INT[1] = {{
     (H5AC_flush_func_t)H5B2_cache_internal_flush,
     (H5AC_dest_func_t)H5B2_cache_internal_dest,
     (H5AC_clear_func_t)H5B2_cache_internal_clear,
+    (H5AC_notify_func_t)NULL,
     (H5AC_size_func_t)H5B2_cache_internal_size,
 }};
 
@@ -114,6 +116,7 @@ const H5AC_class_t H5AC_BT2_LEAF[1] = {{
     (H5AC_flush_func_t)H5B2_cache_leaf_flush,
     (H5AC_dest_func_t)H5B2_cache_leaf_dest,
     (H5AC_clear_func_t)H5B2_cache_leaf_clear,
+    (H5AC_notify_func_t)NULL,
     (H5AC_size_func_t)H5B2_cache_leaf_size,
 }};
 
diff --git a/src/H5B2int.c b/src/H5B2int.c
index b5d4048..d678443 100644
--- a/src/H5B2int.c
+++ b/src/H5B2int.c
@@ -1964,7 +1964,7 @@ HDmemset(leaf->leaf_native, 0, shared->type->nrec_size * shared->node_info[0].ma
 	HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "file allocation failed for B-tree leaf node")
 
     /* Cache the new B-tree node */
-    if(H5AC_set(f, dxpl_id, H5AC_BT2_LEAF, node_ptr->addr, leaf, H5AC__NO_FLAGS_SET) < 0)
+    if(H5AC_set(f, dxpl_id, H5AC_BT2_LEAF, node_ptr->addr, leaf, H5AC__NO_FLAGS_SET, NULL) < 0)
 	HGOTO_ERROR(H5E_BTREE, H5E_CANTINIT, FAIL, "can't add B-tree leaf to cache")
 
 done:
@@ -2045,7 +2045,7 @@ HDmemset(internal->node_ptrs, 0, sizeof(H5B2_node_ptr_t) * (shared->node_info[de
 	HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "file allocation failed for B-tree internal node")
 
     /* Cache the new B-tree node */
-    if(H5AC_set(f, dxpl_id, H5AC_BT2_INT, node_ptr->addr, internal, H5AC__NO_FLAGS_SET) < 0)
+    if(H5AC_set(f, dxpl_id, H5AC_BT2_INT, node_ptr->addr, internal, H5AC__NO_FLAGS_SET, NULL) < 0)
 	HGOTO_ERROR(H5E_BTREE, H5E_CANTINIT, FAIL, "can't add B-tree internal node to cache")
 
 done:
diff --git a/src/H5Bcache.c b/src/H5Bcache.c
index 9765552..99930e6 100644
--- a/src/H5Bcache.c
+++ b/src/H5Bcache.c
@@ -71,6 +71,7 @@ const H5AC_class_t H5AC_BT[1] = {{
     (H5AC_flush_func_t)H5B_flush,
     (H5AC_dest_func_t)H5B_dest,
     (H5AC_clear_func_t)H5B_clear,
+    (H5AC_notify_func_t)NULL,
     (H5AC_size_func_t)H5B_compute_size,
 }};
 
diff --git a/src/H5C.c b/src/H5C.c
index 4c9c9f4..64cd12b 100644
--- a/src/H5C.c
+++ b/src/H5C.c
@@ -2798,6 +2798,7 @@ static herr_t H5C_epoch_marker_flush(H5F_t *f, hid_t dxpl_id, hbool_t dest,
 				     unsigned *flags_ptr);
 static herr_t H5C_epoch_marker_dest(H5F_t *f, void *thing);
 static herr_t H5C_epoch_marker_clear(H5F_t *f, void *thing, hbool_t dest);
+static herr_t H5C_epoch_marker_notify(H5C_notify_action_t action, void *thing, void *udata);
 static herr_t H5C_epoch_marker_size(const H5F_t *f, const void *thing, size_t *size_ptr);
 
 const H5C_class_t epoch_marker_class =
@@ -2807,6 +2808,7 @@ const H5C_class_t epoch_marker_class =
     /* flush = */ &H5C_epoch_marker_flush,
     /* dest  = */ &H5C_epoch_marker_dest,
     /* clear = */ &H5C_epoch_marker_clear,
+    /* notify = */&H5C_epoch_marker_notify,
     /* size  = */ &H5C_epoch_marker_size
 };
 
@@ -2888,6 +2890,21 @@ done:
 }
 
 static herr_t
+H5C_epoch_marker_notify(H5C_notify_action_t UNUSED action,
+                       void UNUSED * thing,
+                       void UNUSED * udata)
+{
+    herr_t ret_value = FAIL;      /* Return value */
+
+    FUNC_ENTER_NOAPI_NOINIT(H5C_epoch_marker_notify)
+
+    HGOTO_ERROR(H5E_CACHE, H5E_SYSTEM, FAIL, "called unreachable fcn.")
+
+done:
+    FUNC_LEAVE_NOAPI(ret_value)
+}
+
+static herr_t
 H5C_epoch_marker_size(const H5F_t UNUSED * f,
                       const void UNUSED * thing,
                       size_t UNUSED * size_ptr)
@@ -4818,7 +4835,8 @@ H5C_insert_entry(H5F_t * 	     f,
                  const H5C_class_t * type,
                  haddr_t 	     addr,
                  void *		     thing,
-                 unsigned int        flags)
+                 unsigned int        flags,
+                 void *              udata)
 {
     herr_t		result;
     hbool_t		first_flush = TRUE;
@@ -5069,6 +5087,13 @@ H5C_insert_entry(H5F_t * 	     f,
     }
 #endif /* H5C_DO_EXTREME_SANITY_CHECKS */
 
+    /* If the entry's type has a 'notify' callback send a 'after insertion'
+     * notice now that the entry is fully integrated into the cache.
+     */
+    if(entry_ptr->type->notify &&
+            (entry_ptr->type->notify)(H5C_NOTIFY_ACTION_AFTER_INSERT, entry_ptr, udata) < 0)
+        HGOTO_ERROR(H5E_CACHE, H5E_CANTNOTIFY, FAIL, "can't notify client about entry inserted into cache")
+
     H5C__UPDATE_STATS_FOR_INSERTION(cache_ptr, entry_ptr)
 
 done:
@@ -6408,6 +6433,13 @@ H5C_protect(H5F_t *	        f,
          * code.  If we do this often enough, we may want to optimize this.
          */
         H5C__UPDATE_RP_FOR_INSERTION(cache_ptr, entry_ptr, NULL)
+
+        /* If the entry's type has a 'notify' callback send a 'after insertion'
+         * notice now that the entry is fully integrated into the cache.
+         */
+        if(entry_ptr->type->notify &&
+                (entry_ptr->type->notify)(H5C_NOTIFY_ACTION_AFTER_INSERT, entry_ptr, udata2) < 0)
+            HGOTO_ERROR(H5E_CACHE, H5E_CANTNOTIFY, NULL, "can't notify client about entry inserted into cache")
     }
 
     HDassert( entry_ptr->addr == addr );
@@ -11070,6 +11102,16 @@ H5C_flush_single_entry(H5F_t *		   f,
             H5C__UPDATE_STATS_FOR_EVICTION(cache_ptr, entry_ptr)
         }
 
+        /* If the entry's type has a 'notify' callback and the entry is about
+         * to be removed from the cache, send a 'before eviction' notice while
+         * the entry is still fully integrated in the cache.
+         */
+        if(destroy) {
+            if(entry_ptr->type->notify &&
+                    (entry_ptr->type->notify)(H5C_NOTIFY_ACTION_BEFORE_EVICT, entry_ptr, NULL) < 0)
+                HGOTO_ERROR(H5E_CACHE, H5E_CANTNOTIFY, FAIL, "can't notify client about entry to evict")
+        } /* end if */
+
         /* Always remove the entry from the hash table on a destroy.  On a
          * flush with destroy, it is cheaper to discard the skip list all at
          * once rather than remove the entries one by one, so we only delete
diff --git a/src/H5Cprivate.h b/src/H5Cprivate.h
index b539068..14958d0 100644
--- a/src/H5Cprivate.h
+++ b/src/H5Cprivate.h
@@ -113,6 +113,9 @@ typedef struct H5C_t H5C_t;
  *
  * CLEAR:	Just marks object as non-dirty.
  *
+ * NOTIFY:	Notify client that an action on an entry has taken/will take
+ *              place
+ *
  * SIZE:	Report the size (on disk) of the specified cache object.
  *		Note that the space allocated on disk may not be contiguous.
  */
@@ -121,6 +124,16 @@ typedef struct H5C_t H5C_t;
 #define H5C_CALLBACK__SIZE_CHANGED_FLAG		0x1
 #define H5C_CALLBACK__RENAMED_FLAG		0x2
 
+/* Actions that can be reported to 'notify' client callback */
+typedef enum H5C_notify_action_t {
+    H5C_NOTIFY_ACTION_AFTER_INSERT,     /* Entry has been added to the cache */
+                                        /* (could be loaded from file with
+                                         *      'protect' call, or inserted
+                                         *      with 'set' call)
+                                         */
+    H5C_NOTIFY_ACTION_BEFORE_EVICT      /* Entry is about to be evicted from cache */
+} H5C_notify_action_t;
+
 typedef void *(*H5C_load_func_t)(H5F_t *f,
                                  hid_t dxpl_id,
                                  haddr_t addr,
@@ -137,6 +150,9 @@ typedef herr_t (*H5C_dest_func_t)(H5F_t *f,
 typedef herr_t (*H5C_clear_func_t)(H5F_t *f,
                                    void *thing,
                                    hbool_t dest);
+typedef herr_t (*H5C_notify_func_t)(H5C_notify_action_t action,
+                                 void *thing,
+                                 void *udata);
 typedef herr_t (*H5C_size_func_t)(const H5F_t *f,
                                   const void *thing,
                                   size_t *size_ptr);
@@ -147,6 +163,7 @@ typedef struct H5C_class_t {
     H5C_flush_func_t	flush;
     H5C_dest_func_t	dest;
     H5C_clear_func_t	clear;
+    H5C_notify_func_t	notify;
     H5C_size_func_t	size;
 } H5C_class_t;
 
@@ -1064,7 +1081,8 @@ H5_DLL herr_t H5C_insert_entry(H5F_t *             f,
                                const H5C_class_t * type,
                                haddr_t             addr,
                                void *              thing,
-                               unsigned int        flags);
+                               unsigned int        flags,
+                               void *              udata);
 
 H5_DLL herr_t H5C_mark_entries_as_clean(H5F_t   * f,
                                         hid_t     primary_dxpl_id,
diff --git a/src/H5EAcache.c b/src/H5EAcache.c
index a2326dc..565127f 100644
--- a/src/H5EAcache.c
+++ b/src/H5EAcache.c
@@ -118,6 +118,7 @@ const H5AC_class_t H5AC_EARRAY_HDR[1] = {{
     (H5AC_flush_func_t)H5EA__cache_hdr_flush,
     (H5AC_dest_func_t)H5EA__cache_hdr_dest,
     (H5AC_clear_func_t)H5EA__cache_hdr_clear,
+    (H5AC_notify_func_t)NULL,
     (H5AC_size_func_t)H5EA__cache_hdr_size,
 }};
 
@@ -128,6 +129,7 @@ const H5AC_class_t H5AC_EARRAY_IBLOCK[1] = {{
     (H5AC_flush_func_t)H5EA__cache_iblock_flush,
     (H5AC_dest_func_t)H5EA__cache_iblock_dest,
     (H5AC_clear_func_t)H5EA__cache_iblock_clear,
+    (H5AC_notify_func_t)NULL,
     (H5AC_size_func_t)H5EA__cache_iblock_size,
 }};
 
@@ -138,6 +140,7 @@ const H5AC_class_t H5AC_EARRAY_SBLOCK[1] = {{
     (H5AC_flush_func_t)H5EA__cache_sblock_flush,
     (H5AC_dest_func_t)H5EA__cache_sblock_dest,
     (H5AC_clear_func_t)H5EA__cache_sblock_clear,
+    (H5AC_notify_func_t)NULL,
     (H5AC_size_func_t)H5EA__cache_sblock_size,
 }};
 
@@ -148,6 +151,7 @@ const H5AC_class_t H5AC_EARRAY_DBLOCK[1] = {{
     (H5AC_flush_func_t)H5EA__cache_dblock_flush,
     (H5AC_dest_func_t)H5EA__cache_dblock_dest,
     (H5AC_clear_func_t)H5EA__cache_dblock_clear,
+    (H5AC_notify_func_t)NULL,
     (H5AC_size_func_t)H5EA__cache_dblock_size,
 }};
 
@@ -158,6 +162,7 @@ const H5AC_class_t H5AC_EARRAY_DBLK_PAGE[1] = {{
     (H5AC_flush_func_t)H5EA__cache_dblk_page_flush,
     (H5AC_dest_func_t)H5EA__cache_dblk_page_dest,
     (H5AC_clear_func_t)H5EA__cache_dblk_page_clear,
+    (H5AC_notify_func_t)NULL,
     (H5AC_size_func_t)H5EA__cache_dblk_page_size,
 }};
 
diff --git a/src/H5EAdblkpage.c b/src/H5EAdblkpage.c
index a8edae1..f566c28 100644
--- a/src/H5EAdblkpage.c
+++ b/src/H5EAdblkpage.c
@@ -178,7 +178,7 @@ HDfprintf(stderr, "%s: dblk_page->size = %Zu\n", FUNC, dblk_page->size);
         H5E_THROW(H5E_CANTSET, "can't set extensible array data block page elements to class's fill value")
 
     /* Cache the new extensible array data block page */
-    if(H5AC_set(hdr->f, dxpl_id, H5AC_EARRAY_DBLK_PAGE, dblk_page->addr, dblk_page, H5AC__NO_FLAGS_SET) < 0)
+    if(H5AC_set(hdr->f, dxpl_id, H5AC_EARRAY_DBLK_PAGE, dblk_page->addr, dblk_page, H5AC__NO_FLAGS_SET, NULL) < 0)
 	H5E_THROW(H5E_CANTINSERT, "can't add extensible array data block page to cache")
 
 CATCH
diff --git a/src/H5EAdblock.c b/src/H5EAdblock.c
index 07ba3d1..89a81c8 100644
--- a/src/H5EAdblock.c
+++ b/src/H5EAdblock.c
@@ -204,7 +204,7 @@ HDfprintf(stderr, "%s: dblock->block_off = %Hu\n", FUNC, dblock->block_off);
             H5E_THROW(H5E_CANTSET, "can't set extensible array data block elements to class's fill value")
 
     /* Cache the new extensible array data block */
-    if(H5AC_set(hdr->f, dxpl_id, H5AC_EARRAY_DBLOCK, dblock_addr, dblock, H5AC__NO_FLAGS_SET) < 0)
+    if(H5AC_set(hdr->f, dxpl_id, H5AC_EARRAY_DBLOCK, dblock_addr, dblock, H5AC__NO_FLAGS_SET, NULL) < 0)
 	H5E_THROW(H5E_CANTINSERT, "can't add extensible array data block to cache")
 
     /* Update extensible array data block statistics */
diff --git a/src/H5EAhdr.c b/src/H5EAhdr.c
index 0a7ddef..ad0c461 100644
--- a/src/H5EAhdr.c
+++ b/src/H5EAhdr.c
@@ -434,7 +434,7 @@ HDfprintf(stderr, "%s: Called\n", FUNC);
 	H5E_THROW(H5E_CANTALLOC, "file allocation failed for extensible array header")
 
     /* Cache the new extensible array header */
-    if(H5AC_set(f, dxpl_id, H5AC_EARRAY_HDR, hdr->addr, hdr, H5AC__NO_FLAGS_SET) < 0)
+    if(H5AC_set(f, dxpl_id, H5AC_EARRAY_HDR, hdr->addr, hdr, H5AC__NO_FLAGS_SET, NULL) < 0)
 	H5E_THROW(H5E_CANTINSERT, "can't add extensible array header to cache")
 
     /* Set address of array header to return */
diff --git a/src/H5EAiblock.c b/src/H5EAiblock.c
index b931661..7e79cbe 100644
--- a/src/H5EAiblock.c
+++ b/src/H5EAiblock.c
@@ -231,7 +231,8 @@ HDfprintf(stderr, "%s: iblock->size = %Zu\n", FUNC, iblock->size);
     } /* end if */
 
     /* Cache the new extensible array index block */
-    if(H5AC_set(hdr->f, dxpl_id, H5AC_EARRAY_IBLOCK, iblock_addr, iblock, H5AC__NO_FLAGS_SET) < 0)
+    /* (pass in header, so the 'notify' callback can create flush dependency on it) */
+    if(H5AC_set(hdr->f, dxpl_id, H5AC_EARRAY_IBLOCK, iblock_addr, iblock, H5AC__NO_FLAGS_SET, hdr) < 0)
 	H5E_THROW(H5E_CANTINSERT, "can't add extensible array index block to cache")
 
     /* Update extensible array index block statistics */
@@ -281,8 +282,6 @@ BEGIN_FUNC(PKG, ERR,
 H5EA_iblock_t *, NULL, NULL,
 H5EA__iblock_protect(H5EA_hdr_t *hdr, hid_t dxpl_id, H5AC_protect_t rw))
 
-    /* Local variables */
-
 #ifdef QAK
 HDfprintf(stderr, "%s: Called\n", FUNC);
 #endif /* QAK */
diff --git a/src/H5EAsblock.c b/src/H5EAsblock.c
index 157d1aa..a57476c 100644
--- a/src/H5EAsblock.c
+++ b/src/H5EAsblock.c
@@ -231,7 +231,7 @@ HDfprintf(stderr, "%s: sblock->block_off = %Hu\n", FUNC, sblock->block_off);
     H5V_array_fill(sblock->dblk_addrs, &tmp_addr, sizeof(haddr_t), sblock->ndblks);
 
     /* Cache the new extensible array super block */
-    if(H5AC_set(hdr->f, dxpl_id, H5AC_EARRAY_SBLOCK, sblock_addr, sblock, H5AC__NO_FLAGS_SET) < 0)
+    if(H5AC_set(hdr->f, dxpl_id, H5AC_EARRAY_SBLOCK, sblock_addr, sblock, H5AC__NO_FLAGS_SET, NULL) < 0)
 	H5E_THROW(H5E_CANTINSERT, "can't add extensible array super block to cache")
 
     /* Update extensible array super block statistics */
diff --git a/src/H5Edefin.h b/src/H5Edefin.h
index b31b31b..adaaa3a 100644
--- a/src/H5Edefin.h
+++ b/src/H5Edefin.h
@@ -166,6 +166,7 @@ hid_t H5E_CANTEXPUNGE_g    = FAIL;      /* Unable to expunge a metadata cache en
 hid_t H5E_CANTRESIZE_g     = FAIL;      /* Unable to resize a metadata cache entry */
 hid_t H5E_CANTDEPEND_g     = FAIL;      /* Unable to create a flush dependency */
 hid_t H5E_CANTUNDEPEND_g   = FAIL;      /* Unable to destroy a flush dependency */
+hid_t H5E_CANTNOTIFY_g     = FAIL;      /* Unable to notify object about action */
 
 /* Link related errors */
 hid_t H5E_TRAVERSE_g       = FAIL;      /* Link traversal failure */
diff --git a/src/H5Einit.h b/src/H5Einit.h
index 204644f..a9f95b7 100644
--- a/src/H5Einit.h
+++ b/src/H5Einit.h
@@ -632,6 +632,11 @@ if((msg = H5E_create_msg(cls, H5E_MINOR, "Unable to destroy a flush dependency")
     HGOTO_ERROR(H5E_ERROR, H5E_CANTINIT, FAIL, "error message initialization failed")
 if((H5E_CANTUNDEPEND_g = H5I_register(H5I_ERROR_MSG, msg, FALSE))<0)
     HGOTO_ERROR(H5E_ERROR, H5E_CANTREGISTER, FAIL, "can't register error message")
+assert(H5E_CANTNOTIFY_g==(-1));
+if((msg = H5E_create_msg(cls, H5E_MINOR, "Unable to notify object about action"))==NULL)
+    HGOTO_ERROR(H5E_ERROR, H5E_CANTINIT, FAIL, "error message initialization failed")
+if((H5E_CANTNOTIFY_g = H5I_register(H5I_ERROR_MSG, msg, FALSE))<0)
+    HGOTO_ERROR(H5E_ERROR, H5E_CANTREGISTER, FAIL, "can't register error message")
 
 /* Link related errors */
 assert(H5E_TRAVERSE_g==(-1));
diff --git a/src/H5Epubgen.h b/src/H5Epubgen.h
index 736349a..3debf20 100644
--- a/src/H5Epubgen.h
+++ b/src/H5Epubgen.h
@@ -268,6 +268,7 @@ H5_DLLVAR hid_t H5E_NOIDS_g;         /* Out of IDs for group */
 #define H5E_CANTRESIZE       (H5OPEN H5E_CANTRESIZE_g)
 #define H5E_CANTDEPEND       (H5OPEN H5E_CANTDEPEND_g)
 #define H5E_CANTUNDEPEND     (H5OPEN H5E_CANTUNDEPEND_g)
+#define H5E_CANTNOTIFY       (H5OPEN H5E_CANTNOTIFY_g)
 H5_DLLVAR hid_t H5E_CANTFLUSH_g;     /* Unable to flush data from cache */
 H5_DLLVAR hid_t H5E_CANTSERIALIZE_g; /* Unable to serialize data from cache */
 H5_DLLVAR hid_t H5E_CANTLOAD_g;      /* Unable to load metadata into cache */
@@ -286,6 +287,7 @@ H5_DLLVAR hid_t H5E_CANTEXPUNGE_g;   /* Unable to expunge a metadata cache entry
 H5_DLLVAR hid_t H5E_CANTRESIZE_g;    /* Unable to resize a metadata cache entry */
 H5_DLLVAR hid_t H5E_CANTDEPEND_g;    /* Unable to create a flush dependency */
 H5_DLLVAR hid_t H5E_CANTUNDEPEND_g;  /* Unable to destroy a flush dependency */
+H5_DLLVAR hid_t H5E_CANTNOTIFY_g;    /* Unable to notify object about action */
 
 /* Link related errors */
 #define H5E_TRAVERSE         (H5OPEN H5E_TRAVERSE_g)
diff --git a/src/H5Eterm.h b/src/H5Eterm.h
index 8936dc0..86b22f1 100644
--- a/src/H5Eterm.h
+++ b/src/H5Eterm.h
@@ -168,6 +168,7 @@ H5E_CANTEXPUNGE_g=
 H5E_CANTRESIZE_g=    
 H5E_CANTDEPEND_g=    
 H5E_CANTUNDEPEND_g=
+H5E_CANTNOTIFY_g=
 
 /* Link related errors */    
 H5E_TRAVERSE_g=    
diff --git a/src/H5F.c b/src/H5F.c
index e7b4cd3..921fe27 100644
--- a/src/H5F.c
+++ b/src/H5F.c
@@ -1116,7 +1116,7 @@ H5F_dest(H5F_t *f, hid_t dxpl_id)
         f->shared->mtab.nalloc = 0;
 
         /* Free root group symbol table entry, if any */
-        f->shared->root_ent = H5MM_xfree(f->shared->root_ent);
+        f->shared->root_ent = (H5G_entry_t *)H5MM_xfree(f->shared->root_ent);
 
         /* Destroy shared file struct */
         f->shared = (H5F_file_t *)H5FL_FREE(H5F_file_t, f->shared);
diff --git a/src/H5FS.c b/src/H5FS.c
index 4282200..f0340c0 100644
--- a/src/H5FS.c
+++ b/src/H5FS.c
@@ -138,7 +138,7 @@ HDfprintf(stderr, "%s: Creating free space manager, nclasses = %Zu\n", FUNC, ncl
             HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, NULL, "file allocation failed for free space header")
 
         /* Cache the new free space header (pinned) */
-        if(H5AC_set(f, dxpl_id, H5AC_FSPACE_HDR, fspace->addr, fspace, H5AC__PIN_ENTRY_FLAG) < 0)
+        if(H5AC_set(f, dxpl_id, H5AC_FSPACE_HDR, fspace->addr, fspace, H5AC__PIN_ENTRY_FLAG, NULL) < 0)
             HGOTO_ERROR(H5E_FSPACE, H5E_CANTINIT, NULL, "can't add free space header to cache")
 
         /* Return free space header address to caller, if desired */
@@ -391,7 +391,7 @@ HDfprintf(stderr, "%s: Real sections to store in file\n", FUNC);
                 HDassert(H5F_addr_defined(fspace->sect_addr));
 
             /* Cache the free space section info */
-            if(H5AC_set(f, dxpl_id, H5AC_FSPACE_SINFO, fspace->sect_addr, fspace->sinfo, H5AC__NO_FLAGS_SET) < 0)
+            if(H5AC_set(f, dxpl_id, H5AC_FSPACE_SINFO, fspace->sect_addr, fspace->sinfo, H5AC__NO_FLAGS_SET, NULL) < 0)
                 HGOTO_ERROR(H5E_FSPACE, H5E_CANTINIT, FAIL, "can't add free space sections to cache")
         } /* end if */
         else {
diff --git a/src/H5FScache.c b/src/H5FScache.c
index a7af72b..b896197 100644
--- a/src/H5FScache.c
+++ b/src/H5FScache.c
@@ -100,6 +100,7 @@ const H5AC_class_t H5AC_FSPACE_HDR[1] = {{
     (H5AC_flush_func_t)H5FS_cache_hdr_flush,
     (H5AC_dest_func_t)H5FS_cache_hdr_dest,
     (H5AC_clear_func_t)H5FS_cache_hdr_clear,
+    (H5AC_notify_func_t)NULL,
     (H5AC_size_func_t)H5FS_cache_hdr_size,
 }};
 
@@ -110,6 +111,7 @@ const H5AC_class_t H5AC_FSPACE_SINFO[1] = {{
     (H5AC_flush_func_t)H5FS_cache_sinfo_flush,
     (H5AC_dest_func_t)H5FS_cache_sinfo_dest,
     (H5AC_clear_func_t)H5FS_cache_sinfo_clear,
+    (H5AC_notify_func_t)NULL,
     (H5AC_size_func_t)H5FS_cache_sinfo_size,
 }};
 
diff --git a/src/H5Gcache.c b/src/H5Gcache.c
index 0e2a699..c17c97f 100644
--- a/src/H5Gcache.c
+++ b/src/H5Gcache.c
@@ -94,6 +94,7 @@ const H5AC_class_t H5AC_SNODE[1] = {{
     (H5AC_flush_func_t)H5G_node_flush,
     (H5AC_dest_func_t)H5G_node_dest,
     (H5AC_clear_func_t)H5G_node_clear,
+    (H5AC_notify_func_t)NULL,
     (H5AC_size_func_t)H5G_node_size,
 }};
 
diff --git a/src/H5Gnode.c b/src/H5Gnode.c
index fe381fd..ab0569f 100644
--- a/src/H5Gnode.c
+++ b/src/H5Gnode.c
@@ -322,7 +322,7 @@ H5G_node_create(H5F_t *f, hid_t dxpl_id, H5B_ins_t UNUSED op, void *_lt_key,
     sym->entry = H5FL_SEQ_CALLOC(H5G_entry_t, (size_t)(2 * H5F_SYM_LEAF_K(f)));
     if(NULL==sym->entry)
 	HGOTO_ERROR (H5E_RESOURCE, H5E_NOSPACE, FAIL, "memory allocation failed");
-    if(H5AC_set(f, dxpl_id, H5AC_SNODE, *addr_p, sym, H5AC__NO_FLAGS_SET) < 0)
+    if(H5AC_set(f, dxpl_id, H5AC_SNODE, *addr_p, sym, H5AC__NO_FLAGS_SET, NULL) < 0)
 	HGOTO_ERROR(H5E_SYM, H5E_CANTINIT, FAIL, "unable to cache symbol table leaf node");
     /*
      * The left and right symbols in an empty tree are both the
diff --git a/src/H5HFcache.c b/src/H5HFcache.c
index 8ab35cb..0fcca97 100644
--- a/src/H5HFcache.c
+++ b/src/H5HFcache.c
@@ -103,6 +103,7 @@ const H5AC_class_t H5AC_FHEAP_HDR[1] = {{
     (H5AC_flush_func_t)H5HF_cache_hdr_flush,
     (H5AC_dest_func_t)H5HF_cache_hdr_dest,
     (H5AC_clear_func_t)H5HF_cache_hdr_clear,
+    (H5AC_notify_func_t)NULL,
     (H5AC_size_func_t)H5HF_cache_hdr_size,
 }};
 
@@ -113,6 +114,7 @@ const H5AC_class_t H5AC_FHEAP_IBLOCK[1] = {{
     (H5AC_flush_func_t)H5HF_cache_iblock_flush,
     (H5AC_dest_func_t)H5HF_cache_iblock_dest,
     (H5AC_clear_func_t)H5HF_cache_iblock_clear,
+    (H5AC_notify_func_t)NULL,
     (H5AC_size_func_t)H5HF_cache_iblock_size,
 }};
 
@@ -123,6 +125,7 @@ const H5AC_class_t H5AC_FHEAP_DBLOCK[1] = {{
     (H5AC_flush_func_t)H5HF_cache_dblock_flush,
     (H5AC_dest_func_t)H5HF_cache_dblock_dest,
     (H5AC_clear_func_t)H5HF_cache_dblock_clear,
+    (H5AC_notify_func_t)NULL,
     (H5AC_size_func_t)H5HF_cache_dblock_size,
 }};
 
diff --git a/src/H5HFdblock.c b/src/H5HFdblock.c
index c14249c..1a28a54 100644
--- a/src/H5HFdblock.c
+++ b/src/H5HFdblock.c
@@ -178,7 +178,7 @@ HDfprintf(stderr, "%s: direct block address = %a\n", FUNC, dblock_addr);
     } /* end else */
 
     /* Cache the new fractal heap direct block */
-    if(H5AC_set(hdr->f, dxpl_id, H5AC_FHEAP_DBLOCK, dblock_addr, dblock, H5AC__NO_FLAGS_SET) < 0)
+    if(H5AC_set(hdr->f, dxpl_id, H5AC_FHEAP_DBLOCK, dblock_addr, dblock, H5AC__NO_FLAGS_SET, NULL) < 0)
 	HGOTO_ERROR(H5E_HEAP, H5E_CANTINIT, FAIL, "can't add fractal heap direct block to cache")
 
     /* Increase the allocated heap size */
diff --git a/src/H5HFhdr.c b/src/H5HFhdr.c
index 4fd527d..92e5f99 100644
--- a/src/H5HFhdr.c
+++ b/src/H5HFhdr.c
@@ -501,7 +501,7 @@ HDfprintf(stderr, "%s: hdr->id_len = %Zu\n", FUNC, hdr->id_len);
 	HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, HADDR_UNDEF, "file allocation failed for fractal heap header")
 
     /* Cache the new fractal heap header */
-    if(H5AC_set(f, dxpl_id, H5AC_FHEAP_HDR, hdr->heap_addr, hdr, H5AC__NO_FLAGS_SET) < 0)
+    if(H5AC_set(f, dxpl_id, H5AC_FHEAP_HDR, hdr->heap_addr, hdr, H5AC__NO_FLAGS_SET, NULL) < 0)
 	HGOTO_ERROR(H5E_HEAP, H5E_CANTINIT, HADDR_UNDEF, "can't add fractal heap header to cache")
 
     /* Set address of heap header to return */
diff --git a/src/H5HFiblock.c b/src/H5HFiblock.c
index 8f9eb24..8756142 100644
--- a/src/H5HFiblock.c
+++ b/src/H5HFiblock.c
@@ -1105,7 +1105,7 @@ HDfprintf(stderr, "%s: dir_rows = %u\n", FUNC, dir_rows);
     iblock->max_child = 0;
 
     /* Cache the new indirect block */
-    if(H5AC_set(hdr->f, dxpl_id, H5AC_FHEAP_IBLOCK, *addr_p, iblock, H5AC__NO_FLAGS_SET) < 0)
+    if(H5AC_set(hdr->f, dxpl_id, H5AC_FHEAP_IBLOCK, *addr_p, iblock, H5AC__NO_FLAGS_SET, NULL) < 0)
 	HGOTO_ERROR(H5E_HEAP, H5E_CANTINIT, FAIL, "can't add fractal heap indirect block to cache")
 
 done:
diff --git a/src/H5HG.c b/src/H5HG.c
index b5f8988..1281d2f 100644
--- a/src/H5HG.c
+++ b/src/H5HG.c
@@ -249,9 +249,8 @@ HDmemset(heap->chunk, 0, size);
     }
 
     /* Add the heap to the cache */
-    if (H5AC_set (f, dxpl_id, H5AC_GHEAP, addr, heap, H5AC__NO_FLAGS_SET)<0)
-	HGOTO_ERROR (H5E_HEAP, H5E_CANTINIT, HADDR_UNDEF, \
-                     "unable to cache global heap collection");
+    if(H5AC_set(f, dxpl_id, H5AC_GHEAP, addr, heap, H5AC__NO_FLAGS_SET, NULL) < 0)
+	HGOTO_ERROR(H5E_HEAP, H5E_CANTINIT, HADDR_UNDEF, "unable to cache global heap collection")
 
     ret_value = addr;
 
diff --git a/src/H5HGcache.c b/src/H5HGcache.c
index 1a9e92c..747c41e 100644
--- a/src/H5HGcache.c
+++ b/src/H5HGcache.c
@@ -92,6 +92,7 @@ const H5AC_class_t H5AC_GHEAP[1] = {{
     (H5AC_flush_func_t)H5HG_flush,
     (H5AC_dest_func_t)H5HG_dest,
     (H5AC_clear_func_t)H5HG_clear,
+    (H5AC_notify_func_t)NULL,
     (H5AC_size_func_t)H5HG_size,
 }};
 
diff --git a/src/H5HL.c b/src/H5HL.c
index a69eb16..ee9f569 100644
--- a/src/H5HL.c
+++ b/src/H5HL.c
@@ -160,7 +160,7 @@ H5HL_create(H5F_t *f, hid_t dxpl_id, size_t size_hint, haddr_t *addr_p/*out*/)
 	heap->freelist = NULL;
 
     /* add to cache */
-    if(H5AC_set(f, dxpl_id, H5AC_LHEAP, *addr_p, heap, H5AC__NO_FLAGS_SET) < 0)
+    if(H5AC_set(f, dxpl_id, H5AC_LHEAP, *addr_p, heap, H5AC__NO_FLAGS_SET, NULL) < 0)
 	HGOTO_ERROR(H5E_HEAP, H5E_CANTINIT, FAIL, "unable to cache heap")
 
 done:
diff --git a/src/H5HLcache.c b/src/H5HLcache.c
index 449e166..fa458ca 100644
--- a/src/H5HLcache.c
+++ b/src/H5HLcache.c
@@ -93,6 +93,7 @@ const H5AC_class_t H5AC_LHEAP[1] = {{
     (H5AC_flush_func_t)H5HL_flush,
     (H5AC_dest_func_t)H5HL_dest,
     (H5AC_clear_func_t)H5HL_clear,
+    (H5AC_notify_func_t)NULL,
     (H5AC_size_func_t)H5HL_size,
 }};
 
diff --git a/src/H5O.c b/src/H5O.c
index 9b9d0ef..eb25bfc 100644
--- a/src/H5O.c
+++ b/src/H5O.c
@@ -1183,7 +1183,7 @@ H5O_create(H5F_t *f, hid_t dxpl_id, size_t size_hint, hid_t ocpl_id,
     oh->mesg[0].chunkno = 0;
 
     /* Cache object header */
-    if(H5AC_set(f, dxpl_id, H5AC_OHDR, oh_addr, oh, H5AC__NO_FLAGS_SET) < 0)
+    if(H5AC_set(f, dxpl_id, H5AC_OHDR, oh_addr, oh, H5AC__NO_FLAGS_SET, NULL) < 0)
         HGOTO_ERROR(H5E_OHDR, H5E_CANTINIT, FAIL, "unable to cache object header")
 
     /* Set up object location */
diff --git a/src/H5Ocache.c b/src/H5Ocache.c
index 551eca8..6c86681 100644
--- a/src/H5Ocache.c
+++ b/src/H5Ocache.c
@@ -98,6 +98,7 @@ const H5AC_class_t H5AC_OHDR[1] = {{
     (H5AC_flush_func_t)H5O_flush,
     (H5AC_dest_func_t)H5O_dest,
     (H5AC_clear_func_t)H5O_clear,
+    (H5AC_notify_func_t)NULL,
     (H5AC_size_func_t)H5O_size,
 }};
 
diff --git a/src/H5Ocopy.c b/src/H5Ocopy.c
index 7b76f3d..d44b9b0 100644
--- a/src/H5Ocopy.c
+++ b/src/H5Ocopy.c
@@ -719,7 +719,7 @@ H5O_copy_header_real(const H5O_loc_t *oloc_src, H5O_loc_t *oloc_dst /*out */,
     } /* end if */
 
     /* Insert destination object header in cache */
-    if(H5AC_set(oloc_dst->file, dxpl_id, H5AC_OHDR, oloc_dst->addr, oh_dst, H5AC__NO_FLAGS_SET) < 0)
+    if(H5AC_set(oloc_dst->file, dxpl_id, H5AC_OHDR, oloc_dst->addr, oh_dst, H5AC__NO_FLAGS_SET, NULL) < 0)
         HGOTO_ERROR(H5E_OHDR, H5E_CANTINIT, FAIL, "unable to cache object header")
 
 done:
diff --git a/src/H5SM.c b/src/H5SM.c
index c383877..b10cf21 100755
--- a/src/H5SM.c
+++ b/src/H5SM.c
@@ -211,7 +211,7 @@ H5SM_init(H5F_t *f, H5P_genplist_t * fc_plist, const H5O_loc_t *ext_loc, hid_t d
 	HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "file allocation failed for SOHM table")
 
     /* Cache the new table */
-    if(H5AC_set(f, dxpl_id, H5AC_SOHM_TABLE, table_addr, table, H5AC__NO_FLAGS_SET) < 0)
+    if(H5AC_set(f, dxpl_id, H5AC_SOHM_TABLE, table_addr, table, H5AC__NO_FLAGS_SET, NULL) < 0)
 	HGOTO_ERROR(H5E_CACHE, H5E_CANTINS, FAIL, "can't add SOHM table to cache")
 
     /* Record the address of the master table in the file */
@@ -635,7 +635,7 @@ H5SM_create_list(H5F_t *f, H5SM_index_header_t *header, hid_t dxpl_id)
 	HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, HADDR_UNDEF, "file allocation failed for SOHM list")
 
     /* Put the list into the cache */
-    if(H5AC_set(f, dxpl_id, H5AC_SOHM_LIST, addr, list, H5AC__NO_FLAGS_SET) < 0)
+    if(H5AC_set(f, dxpl_id, H5AC_SOHM_LIST, addr, list, H5AC__NO_FLAGS_SET, NULL) < 0)
 	HGOTO_ERROR(H5E_CACHE, H5E_CANTINS, HADDR_UNDEF, "can't add SOHM list to cache")
 
     /* Set return value */
diff --git a/src/H5SMcache.c b/src/H5SMcache.c
index 91478c5..d53993e 100644
--- a/src/H5SMcache.c
+++ b/src/H5SMcache.c
@@ -76,6 +76,7 @@ const H5AC_class_t H5AC_SOHM_TABLE[1] = {{
     (H5AC_flush_func_t)H5SM_table_flush,
     (H5AC_dest_func_t)H5SM_table_dest,
     (H5AC_clear_func_t)H5SM_table_clear,
+    (H5AC_notify_func_t)NULL,
     (H5AC_size_func_t)H5SM_table_size,
 }};
 
@@ -85,6 +86,7 @@ const H5AC_class_t H5AC_SOHM_LIST[1] = {{
     (H5AC_flush_func_t)H5SM_list_flush,
     (H5AC_dest_func_t)H5SM_list_dest,
     (H5AC_clear_func_t)H5SM_list_clear,
+    (H5AC_notify_func_t)NULL,
     (H5AC_size_func_t)H5SM_list_size,
 }};
 
diff --git a/src/H5err.txt b/src/H5err.txt
index 64e9729..2c5ca04 100644
--- a/src/H5err.txt
+++ b/src/H5err.txt
@@ -171,6 +171,7 @@ MINOR, CACHE, H5E_CANTEXPUNGE, Unable to expunge a metadata cache entry
 MINOR, CACHE, H5E_CANTRESIZE, Unable to resize a metadata cache entry
 MINOR, CACHE, H5E_CANTDEPEND, Unable to create a flush dependency
 MINOR, CACHE, H5E_CANTUNDEPEND, Unable to destroy a flush dependency
+MINOR, CACHE, H5E_CANTNOTIFY, Unable to notify object about action
 
 # B-tree related errors
 MINOR, BTREE, H5E_NOTFOUND, Object not found