diff options
Diffstat (limited to 'src/H5O.c')
| -rw-r--r-- | src/H5O.c | 61 |
1 files changed, 61 insertions, 0 deletions
@@ -3279,6 +3279,67 @@ done: /*------------------------------------------------------------------------- + * Function: H5O_get_info + * + * Purpose: Retrieve information about an object header + * + * Return: Non-negative on success/Negative on failure + * + * Programmer: Quincey Koziol + * koziol@ncsa.uiuc.edu + * Oct 7 2003 + * + * Modifications: + * + *------------------------------------------------------------------------- + */ +herr_t +H5O_get_info(H5G_entry_t *ent, H5O_stat_t *ostat, hid_t dxpl_id) +{ + H5O_t *oh=NULL; /* Object header information */ + H5O_mesg_t *curr_msg; /* Pointer to current message being operated on */ + hsize_t total_size; /* Total amount of space used in file */ + hsize_t free_space; /* Free space in object header */ + unsigned u; /* Local index variable */ + herr_t ret_value=SUCCEED; /* Return value */ + + FUNC_ENTER_NOAPI(H5O_get_info,FAIL); + + /* Check args */ + assert (ent); + assert (ostat); + + /* Get the object header information */ + if (NULL == (oh = H5AC_protect(ent->file, dxpl_id, H5AC_OHDR, ent->header, NULL, NULL, H5AC_READ))) + HGOTO_ERROR(H5E_OHDR, H5E_CANTLOAD, FAIL, "unable to load object header"); + + /* Iterate over all the messages, accumulating the total size & free space */ + total_size=H5O_SIZEOF_HDR(ent->file); + free_space=0; + for (u = 0, curr_msg=&oh->mesg[0]; u < oh->nmesgs; u++,curr_msg++) { + /* Accumulate the size for this message */ + total_size+= H5O_SIZEOF_MSGHDR(ent->file) + curr_msg->raw_size; + + /* Check for this message being free space */ + if (H5O_NULL_ID == curr_msg->type->id) + free_space+= H5O_SIZEOF_MSGHDR(ent->file) + curr_msg->raw_size; + } /* end for */ + + /* Set the information for this object header */ + ostat->size=total_size; + ostat->free=free_space; + ostat->nmesgs=oh->nmesgs; + ostat->nchunks=oh->nchunks; + +done: + if (oh && H5AC_unprotect(ent->file, dxpl_id, H5AC_OHDR, ent->header, oh, FALSE)<0) + HDONE_ERROR(H5E_OHDR, H5E_PROTECT, FAIL, "unable to release object header"); + + FUNC_LEAVE_NOAPI(ret_value); +} /* end H5O_get_info() */ + + +/*------------------------------------------------------------------------- * Function: H5O_debug_id * * Purpose: Act as a proxy for calling the 'debug' method for a |