There is performance issue when closing an object. The slow down is due to the search of

the "tag_list" to find out the "corked" status of an object.
The fix:
(1)  Add a counter "num_objs_corked" in the cache structure to track the number
of "corked" objects.
(2) Skip the search of "tag_list" if the counter is zero i.e. no "corked" objects.

1 files changed, 1 insertions, 0 deletions

diff --git a/src/H5Cprivate.h b/src/H5Cprivate.h
index c39c1df..ee2d033 100644
--- a/src/H5Cprivate.h
+++ b/src/H5Cprivate.h
@@ -2301,6 +2301,7 @@ H5_DLL herr_t H5C_validate_resize_config(H5C_auto_size_ctl_t *config_ptr,
     unsigned int tests);
 H5_DLL herr_t H5C_ignore_tags(H5C_t *cache_ptr);
 H5_DLL hbool_t H5C_get_ignore_tags(const H5C_t *cache_ptr);
+H5_DLL hbool_t H5C_get_num_objs_corked(const H5C_t *cache_ptr);
 H5_DLL herr_t H5C_retag_entries(H5C_t * cache_ptr, haddr_t src_tag, haddr_t dest_tag);
 H5_DLL herr_t H5C_cork(H5C_t *cache_ptr, haddr_t obj_addr, unsigned action, hbool_t *corked);
 H5_DLL herr_t H5C_get_entry_ring(const H5F_t *f, haddr_t addr, H5C_ring_t *ring);