diff options
Diffstat (limited to 'src/H5Odtype.c')
| -rw-r--r-- | src/H5Odtype.c | 49 |
1 files changed, 48 insertions, 1 deletions
diff --git a/src/H5Odtype.c b/src/H5Odtype.c index 429db74..dd7a938 100644 --- a/src/H5Odtype.c +++ b/src/H5Odtype.c @@ -35,7 +35,8 @@ static herr_t H5O_dtype_reset(void *_mesg); static herr_t H5O_dtype_free(void *_mesg); static void *H5O_dtype_get_share(const void *_mesg, H5O_shared_t *sh); static herr_t H5O_dtype_set_share(void *_mesg, const H5O_shared_t *sh); -static herr_t H5O_dtype_is_shared(const void *_mesg); +static htri_t H5O_dtype_can_share(const void *_mesg); +static htri_t H5O_dtype_is_shared(const void *_mesg); static herr_t H5O_dtype_pre_copy_file(H5F_t *file_src, const H5O_msg_class_t *type, const void *mesg_src, hbool_t *deleted, const H5O_copy_t *cpy_info, void *_udata); static void *H5O_dtype_copy_file(H5F_t *file_src, const H5O_msg_class_t *mesg_type, @@ -59,6 +60,7 @@ const H5O_msg_class_t H5O_MSG_DTYPE[1] = {{ NULL, /* link method */ H5O_dtype_get_share, /* get share method */ H5O_dtype_set_share, /* set share method */ + H5O_dtype_can_share, /* can share method */ H5O_dtype_is_shared, /* is shared method */ H5O_dtype_pre_copy_file, /* pre copy native value to file */ H5O_dtype_copy_file, /* copy native value to file */ @@ -1346,6 +1348,51 @@ H5O_dtype_set_share(void *_mesg/*in,out*/, const H5O_shared_t *sh) /*------------------------------------------------------------------------- + * Function: H5O_dtype_can_share + * + * Purpose: Determines if this datatype is allowed to be shared or + * not. Immutable datatypes or datatypes that are already + * shared cannot be shared (again). + * + * Return: TRUE if datatype can be shared + * FALSE if datatype may not shared + * Negative on failure + * + * Programmer: James Laird + * Monday, October 16, 2006 + * + *------------------------------------------------------------------------- + */ +static htri_t +H5O_dtype_can_share(const void *_mesg) +{ + const H5T_t *mesg = (const H5T_t *)_mesg; + htri_t tri_ret; + htri_t ret_value = TRUE; + + FUNC_ENTER_NOAPI_NOINIT(H5O_dtype_can_share) + + HDassert(mesg); + + /* Don't share immutable datatypes */ + if((tri_ret = H5T_is_immutable(mesg)) > 0) + HGOTO_DONE(FALSE) + else if(tri_ret < 0) + HGOTO_ERROR(H5E_OHDR, H5E_BADTYPE, FAIL, "can't tell if datatype is immutable") + + /* Don't share committed datatypes */ + if((tri_ret = H5T_committed(mesg)) > 0) + HGOTO_DONE(FALSE) + else if(tri_ret < 0) + HGOTO_ERROR(H5E_OHDR, H5E_BADTYPE, FAIL, "can't tell if datatype is shared") + +done: + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5O_dtype_can_share() */ + + + +/*------------------------------------------------------------------------- * Function: H5O_dtype_is_shared * * Purpose: Determines if this datatype is shared (committed or a SOHM) |