diff options
Diffstat (limited to 'src/H5P.c')
| -rw-r--r-- | src/H5P.c | 114 |
1 files changed, 114 insertions, 0 deletions
@@ -2370,6 +2370,118 @@ done: } #endif /* H5_WANT_H5_V1_4_COMPAT */ +#ifdef H5_WANT_H5_V1_4_COMPAT + +/*------------------------------------------------------------------------- + * Function: H5Pset_buffer + * + * Purpose: Given a dataset transfer property list, set the maximum size + * for the type conversion buffer and background buffer and + * optionally supply pointers to application-allocated buffers. + * If the buffer size is smaller than the entire amount of data + * being transfered between application and file, and a type + * conversion buffer or background buffer is required then + * strip mining will be used. + * + * If TCONV and/or BKG are null pointers then buffers will be + * allocated and freed during the data transfer. + * + * Return: Non-negative on success/Negative on failure + * + * Programmer: Robb Matzke + * Monday, March 16, 1998 + * + * Modifications: + * + *------------------------------------------------------------------------- + */ +herr_t +H5Pset_buffer(hid_t plist_id, hsize_t _size, void *tconv, void *bkg) +{ + H5P_genplist_t *plist; /* Property list pointer */ + size_t size=(size_t)_size; /* Work around size difference */ + herr_t ret_value=SUCCEED; /* return value */ + + FUNC_ENTER (H5Pset_buffer, FAIL); + H5TRACE4("e","izxx",plist_id,_size,tconv,bkg); + + /* Check arguments */ + if(TRUE != H5P_isa_class(plist_id, H5P_DATASET_XFER)) + HGOTO_ERROR (H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataset transfer property list"); + if (size<=0) + HGOTO_ERROR (H5E_ARGS, H5E_BADVALUE, FAIL, "buffer size must not be zero"); + + /* Get the plist structure */ + if(NULL == (plist = H5I_object(plist_id))) + HGOTO_ERROR(H5E_ATOM, H5E_BADATOM, FAIL, "can't find object for ID"); + + /* Update property list */ + if(H5P_set(plist, H5D_XFER_MAX_TEMP_BUF_NAME, &size)<0) + HGOTO_ERROR (H5E_PLIST, H5E_CANTSET, FAIL, "Can't set transfer buffer size"); + if(H5P_set(plist, H5D_XFER_TCONV_BUF_NAME, &tconv)<0) + HGOTO_ERROR (H5E_PLIST, H5E_CANTSET, FAIL, "Can't set transfer type conversion buffer"); + if(H5P_set(plist, H5D_XFER_BKGR_BUF_NAME, &bkg)<0) + HGOTO_ERROR (H5E_PLIST, H5E_CANTSET, FAIL, "Can't set background type conversion buffer"); + +done: + FUNC_LEAVE(ret_value); +} + + +/*------------------------------------------------------------------------- + * Function: H5Pget_buffer + * + * Purpose: Reads values previously set with H5Pset_buffer(). + * + * Return: Success: Buffer size. + * + * Failure: 0 + * + * Programmer: Robb Matzke + * Monday, March 16, 1998 + * + * Modifications: + * + *------------------------------------------------------------------------- + */ +hsize_t +H5Pget_buffer(hid_t plist_id, void **tconv/*out*/, void **bkg/*out*/) +{ + H5P_genplist_t *plist; /* Property list pointer */ + size_t size; /* Type conversion buffer size */ + hsize_t ret_value=0; /* Type conversion buffer size */ + + FUNC_ENTER (H5Pget_buffer, 0); + H5TRACE3("z","ixx",plist_id,tconv,bkg); + + /* Check arguments */ + if (TRUE!=H5P_isa_class(plist_id,H5P_DATASET_XFER)) + HGOTO_ERROR (H5E_ARGS, H5E_BADTYPE, 0, "not a dataset transfer property list"); + + /* Get the plist structure */ + if(NULL == (plist = H5I_object(plist_id))) + HGOTO_ERROR(H5E_ATOM, H5E_BADATOM, 0, "can't find object for ID"); + + /* Return values */ + if (tconv) + if(H5P_get(plist, H5D_XFER_TCONV_BUF_NAME, tconv)<0) + HGOTO_ERROR (H5E_PLIST, H5E_CANTGET, 0, "Can't get transfer type conversion buffer"); + if (bkg) + if(H5P_get(plist, H5D_XFER_BKGR_BUF_NAME, bkg)<0) + HGOTO_ERROR (H5E_PLIST, H5E_CANTGET, 0, "Can't get background type conversion buffer"); + + /* Get the size */ + if(H5P_get(plist, H5D_XFER_MAX_TEMP_BUF_NAME, &size)<0) + HGOTO_ERROR (H5E_PLIST, H5E_CANTSET, 0, "Can't set transfer buffer size"); + + /* Set the return value */ + ret_value=(hsize_t)size; + +done: + FUNC_LEAVE(ret_value); +} + +#else /* H5_WANT_H5_V1_4_COMPAT */ /*------------------------------------------------------------------------- * Function: H5Pset_buffer @@ -2479,6 +2591,8 @@ done: FUNC_LEAVE(ret_value); } +#endif /* H5_WANT_H5_V1_4_COMPAT */ + /*------------------------------------------------------------------------- * Function: H5Pset_hyper_cache |