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Retrieves the metadata cache image configuration values for a file access property list


H5P_GET_MDC_IMAGE_CONFIG ( plist_id, config_ptr )


herr_t H5Pget_mdc_image_config(
        hid_t plist_id,
        H5AC_cache_image_config_t * config_ptr)        

hid_t plist_idIN: File access property list identifier
H5AC_cache_image_config_t * config_ptrOUT: Pointer to metadata cache image configuration values


H5P_GET_MDC_IMAGE_CONFIG retrieves the metadata cache image values into config_ptr for the file access property list specified in plist_id.

H5AC_cache_image_config_t is defined as follows:

        typedef struct H5AC_cache_image_config_t {
          int32_t         version;
          hbool_t         generate_image;
          hbool_t         save_resize_status;
          int32_t         entry_ageout;
        } H5AC_cache_image_config_t;

Where the fields of the instance of H5AC_cache_image_config_t passed into the function will be set as follows:

version:Must be set to H5AC__CURR_CACHE_IMAGE_CONFIG_VERSION prior to the call to H5Pget_mdc_image_config()
generate_image:Will be set to either TRUE or FALSE, depending on whether a cache image will be requested
save_resize_status:Will be set to either TRUE or FALSE, depending on whether inclusion of the metadata cache resize configuration is to be included in the cache image. Note that this field is not supported at present.
entry_ageout:Will be set to an integer in the range of -1 to 100. Non negative values indicate the number of close/open cycles a metadata cache can remain in the cache image without being accessed. -1 indicates no limit on the number of such cycles. Note: this field is not supported at present -- thus in effect it is always set to -1.


Returns a non-negative value if successful; otherwise returns a negative value.


Coming Soon!

Release    Change
1.10.1C function introduced with this release.

--- Last Modified: August 05, 2019 | 03:57 PM