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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Copyright by the Board of Trustees of the University of Illinois. *
* All rights reserved. *
* *
* This file is part of HDF5. The full HDF5 copyright notice, including *
* terms governing use, modification, and redistribution, is contained in *
* the files COPYING and Copyright.html. COPYING can be found at the root *
* of the source code distribution tree; Copyright.html can be found at the *
* root level of an installed copy of the electronic HDF5 document set and *
* is linked from the top-level documents page. It can also be found at *
* http://hdf.ncsa.uiuc.edu/HDF5/doc/Copyright.html. If you do not have *
* access to either file, you may request a copy from hdfhelp@ncsa.uiuc.edu. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/****************/
/* Module Setup */
/****************/
#define H5O_PACKAGE /*suppress error about including H5Opkg */
/***********/
/* Headers */
/***********/
#include "H5private.h" /* Generic Functions */
#include "H5Eprivate.h" /* Error handling */
#include "H5FLprivate.h" /* Free lists */
#include "H5Opkg.h" /* Object headers */
/****************/
/* Local Macros */
/****************/
/******************/
/* Local Typedefs */
/******************/
/********************/
/* Local Prototypes */
/********************/
static htri_t H5O_dset_isa(H5O_t *loc);
static void *H5O_dset_get_copy_file_udata(void);
static void H5O_dset_free_copy_file_udata(void *);
/*********************/
/* Package Variables */
/*********************/
/*****************************/
/* Library Private Variables */
/*****************************/
/*******************/
/* Local Variables */
/*******************/
/* This message derives from H5O object class */
const H5O_obj_class_t H5O_OBJ_DATASET[1] = {{
H5G_DATASET, /* object type */
"dataset", /* object name, for debugging */
H5O_dset_get_copy_file_udata, /* get 'copy file' user data */
H5O_dset_free_copy_file_udata, /* free 'copy file' user data */
H5O_dset_isa /* "isa" message */
}};
/* Declare a free list to manage the H5D_copy_file_ud_t struct */
H5FL_DEFINE(H5D_copy_file_ud_t);
/*-------------------------------------------------------------------------
* Function: H5O_dset_isa
*
* Purpose: Determines if an object has the requisite messages for being
* a dataset.
*
* Return: Success: TRUE if the required dataset messages are
* present; FALSE otherwise.
*
* Failure: FAIL if the existence of certain messages
* cannot be determined.
*
* Programmer: Robb Matzke
* Monday, November 2, 1998
*
*-------------------------------------------------------------------------
*/
htri_t
H5O_dset_isa(H5O_t *oh)
{
htri_t exists; /* Flag if header message of interest exists */
htri_t ret_value = TRUE; /* Return value */
FUNC_ENTER_NOAPI(H5O_dset_isa, FAIL)
HDassert(oh);
/* Datatype */
if((exists = H5O_exists_oh(oh, H5O_DTYPE_ID, 0)) < 0)
HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to read object header")
else if(!exists)
HGOTO_DONE(FALSE)
/* Layout */
if((exists = H5O_exists_oh(oh, H5O_SDSPACE_ID, 0)) < 0)
HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to read object header")
else if(!exists)
HGOTO_DONE(FALSE)
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5O_dset_isa() */
/*-------------------------------------------------------------------------
* Function: H5O_dset_get_copy_file_udata
*
* Purpose: Allocates the user data needed for copying a dataset's
* object header from file to file.
*
* Return: Success: Non-NULL pointer to user data
*
* Failure: NULL
*
* Programmer: Quincey Koziol
* Monday, November 21, 2005
*
*-------------------------------------------------------------------------
*/
static void *
H5O_dset_get_copy_file_udata(void)
{
void *ret_value; /* Return value */
FUNC_ENTER_NOAPI_NOINIT(H5O_dset_get_copy_file_udata)
/* Allocate space for the 'copy file' user data for copying datasets */
if(NULL == (ret_value = H5FL_CALLOC(H5D_copy_file_ud_t)))
HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed")
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5O_dset_get_copy_file_udata() */
/*-------------------------------------------------------------------------
* Function: H5O_dset_free_copy_file_udata
*
* Purpose: Release the user data needed for copying a dataset's
* object header from file to file.
*
* Return: <none>
*
* Programmer: Quincey Koziol
* Monday, November 21, 2005
*
* Modifications: Peter Cao
* Tuesday, December 27, 2005
* Free filter pipeline for copying a dataset
*
*-------------------------------------------------------------------------
*/
static void
H5O_dset_free_copy_file_udata(void *_udata)
{
H5D_copy_file_ud_t *udata = (H5D_copy_file_ud_t *)_udata;
FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5O_dset_free_copy_file_udata)
/* Sanity check */
HDassert(udata);
/* Release copy of dataset's datatype, if it was set */
if(udata->src_dtype)
H5T_close(udata->src_dtype);
/* Release copy of dataset's filter pipeline, if it was set */
if (udata->src_pline)
H5O_free(H5O_PLINE_ID, udata->src_pline);
/* Release space for 'copy file' user data */
H5FL_FREE(H5D_copy_file_ud_t, udata);
FUNC_LEAVE_NOAPI_VOID
} /* end H5O_dset_free_copy_file_udata() */
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