diff options
Diffstat (limited to 'src/H5O.c')
| -rw-r--r-- | src/H5O.c | 56 |
1 files changed, 56 insertions, 0 deletions
@@ -91,6 +91,7 @@ static H5O_t *H5O_load(H5F_t *f, hid_t dxpl_id, haddr_t addr, const void *_udata static herr_t H5O_flush(H5F_t *f, hid_t dxpl_id, hbool_t destroy, haddr_t addr, H5O_t *oh); static herr_t H5O_dest(H5F_t *f, H5O_t *oh); static herr_t H5O_clear(H5F_t *f, H5O_t *oh, hbool_t destroy); +static herr_t H5O_compute_size(H5F_t *f, H5O_t *oh, size_t *size_ptr); /* H5O inherits cache-like properties from H5AC */ static const H5AC_class_t H5AC_OHDR[1] = {{ @@ -99,6 +100,7 @@ static const H5AC_class_t H5AC_OHDR[1] = {{ (H5AC_flush_func_t)H5O_flush, (H5AC_dest_func_t)H5O_dest, (H5AC_clear_func_t)H5O_clear, + (H5AC_size_func_t)H5O_compute_size, }}; /* ID to type mapping */ @@ -893,6 +895,60 @@ done: /*------------------------------------------------------------------------- + * Function: H5O_compute_size + * + * Purpose: Compute the size in bytes of the specified instance of + * H5O_t on disk, and return it in *len_ptr. On failure, + * the value of *len_ptr is undefined. + * + * The value returned will probably be low unless the object + * has just been flushed, as we simply total up the size of + * the header with the sizes of the chunks. Thus any message + * that has been added since the last flush will not be + * reflected in the total. + * + * Return: Non-negative on success/Negative on failure + * + * Programmer: John Mainzer + * 5/13/04 + * + * Modifications: + * + *------------------------------------------------------------------------- + */ +static herr_t +H5O_compute_size(H5F_t *f, H5O_t *oh, size_t *size_ptr) +{ + unsigned u; + size_t size; + herr_t ret_value=SUCCEED; /* Return value */ + + FUNC_ENTER_NOAPI(H5O_compute_size, FAIL); + + /* check args */ + HDassert(f); + HDassert(oh); + HDassert(size_ptr); + + size = H5O_SIZEOF_HDR(f); + + for (u = 0; u < oh->nchunks; u++) + { + size += oh->chunk[u].size; + } + + HDassert(size >= H5O_SIZEOF_HDR(f)); + + *size_ptr = size; + +done: + + FUNC_LEAVE_NOAPI(ret_value); + +} /* H5O_compute_size() */ + + +/*------------------------------------------------------------------------- * Function: H5O_reset * * Purpose: Some message data structures have internal fields that |