H5F_GET_INFO1 returns global information for the file associated with the object identifier obj_id in the H5F_info1_t struct named file_info. obj_id is an identifier for any object in the file of interest.
An H5F_info1_t struct is defined as follows (in H5Fpublic.h): typedef struct H5F_info1_t {
hsize_t super_ext_size;
struct {
hsize_t hdr_size;
H5_ih_info_t msgs_info;
} sohm;
} H5F_info1_t;
super_ext_size is the size of the superblock extension.
The sohm sub-struct contains shared object header message information: hdr_size is the size of shared of object header messages. msgs_info is a H5_ih_info_t struct containing the cumulative shared object header message index size and heap size; an H5_ih_info1_t struct is defined as follows (in H5public.h): typedef struct H5_ih_info_t {
hsize_t index_size;
hsize_t heap_size;
} H5_ih_info_t;
index_size is the summed size of all of the shared of object header indexes. Each index might be either a B-tree or a list. heap_size is the size of the heap.
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