herr_t H5Odisable_mdc_flushes(
hid_t object_id
)
H5O/H5Fenable/disable_mdc_flushes() and associated
H5Xflush() functions can be used to control the flushing
of entries from a file’s metadata cache.
This function prevents an object’s or cache’s
dirty metadata entries from being flushed from the cache by the usual
cache eviction/flush policy. Instead, users must manually flush
the cache or entries for individual objects via the appropriate
H5F/H5D/H5G/H5T/H5Oflush() calls.
Metadata cache entries can be controlled at both the individual HDF5 object level (datasets, groups, committed datatypes) and the entire metadata cache level.
hid_t identifiers that represent these objects
can be passed to this function.
Passing in a hid_t identifier that represents any
other HDF5 entity is considered an error.
It is an error to pass an HDF5 file identifier (obtained from
H5Fopen() or H5Fcreate()) to this function.
Use H5Fdisable_mdc_flushes instead.
Misuse of this function can cause the cache to exhaust available memory.
Objects can be returned to the default automatic flush behavior
with H5Oenable_mdc_flushes().
Flush prevention only pertains to new or dirty metadata entries. Clean entries can be evicted from the cache.
Calling this function on an object that has already had flushes disabled will return an error.
hid_t object_id
|
IN: Identifier of the object that will have flushes
disabled.
See the above notes for restrictions. |
| Release | Change |
| 1.10.0 | C function introduced with this release. |