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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. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*-------------------------------------------------------------------------
*
* Created: H5Oginfo.c
* Aug 23 2005
* Quincey Koziol <koziol@ncsa.uiuc.edu>
*
* Purpose: Group Information messages.
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
#define H5O_PACKAGE /*suppress error about including H5Opkg */
#include "H5private.h" /* Generic Functions */
#include "H5Eprivate.h" /* Error handling */
#include "H5FLprivate.h" /* Free lists */
#include "H5Opkg.h" /* Object headers */
/* PRIVATE PROTOTYPES */
static void *H5O_ginfo_decode(H5F_t *f, hid_t dxpl_id, const uint8_t *p);
static herr_t H5O_ginfo_encode(H5F_t *f, uint8_t *p, const void *_mesg);
static void *H5O_ginfo_copy(const void *_mesg, void *_dest, unsigned update_flags);
static size_t H5O_ginfo_size(const H5F_t *f, const void *_mesg);
static herr_t H5O_ginfo_free(void *_mesg);
static herr_t H5O_ginfo_debug(H5F_t *f, hid_t dxpl_id, const void *_mesg,
FILE * stream, int indent, int fwidth);
/* This message derives from H5O message class */
const H5O_msg_class_t H5O_MSG_GINFO[1] = {{
H5O_GINFO_ID, /*message id number */
"ginfo", /*message name for debugging */
sizeof(H5O_ginfo_t), /*native message size */
H5O_ginfo_decode, /*decode message */
H5O_ginfo_encode, /*encode message */
H5O_ginfo_copy, /*copy the native value */
H5O_ginfo_size, /*size of symbol table entry */
NULL, /*default reset method */
H5O_ginfo_free, /* free method */
NULL, /* file delete method */
NULL, /* link method */
NULL, /*get share method */
NULL, /*set share method */
NULL, /* pre copy native value to file */
NULL, /* copy native value to file */
NULL, /* post copy native value to file */
H5O_ginfo_debug /*debug the message */
}};
/* Current version of group info information */
#define H5O_GINFO_VERSION 1
/* Flags for group info flag encoding */
#define H5O_GINFO_FLAG_TRACK_NAME 0x01
#define H5O_GINFO_FLAG_TRACK_CORDER 0x02
/* Declare a free list to manage the H5O_ginfo_t struct */
H5FL_DEFINE_STATIC(H5O_ginfo_t);
/*-------------------------------------------------------------------------
* Function: H5O_ginfo_decode
*
* Purpose: Decode a message and return a pointer to
* a newly allocated one.
*
* Return: Success: Ptr to new message in native order.
*
* Failure: NULL
*
* Programmer: Quincey Koziol
* koziol@ncsa.uiuc.edu
* Aug 30 2005
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
static void *
H5O_ginfo_decode(H5F_t UNUSED *f, hid_t UNUSED dxpl_id, const uint8_t *p)
{
H5O_ginfo_t *ginfo = NULL; /* Pointer to group information message */
unsigned char flags; /* Flags for encoding group info */
void *ret_value; /* Return value */
FUNC_ENTER_NOAPI_NOINIT(H5O_ginfo_decode)
/* check args */
HDassert(p);
#ifndef NDEBUG
{
const uint8_t *start_p = p;
#endif /* NDEBUG */
/* Version of message */
if(*p++ != H5O_GINFO_VERSION)
HGOTO_ERROR(H5E_OHDR, H5E_CANTLOAD, NULL, "bad version number for message")
/* Allocate space for message */
if(NULL == (ginfo = H5FL_CALLOC(H5O_ginfo_t)))
HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed")
/* Get the flags for the group */
flags = *p++;
HDassert(flags & H5O_GINFO_FLAG_TRACK_NAME);
ginfo->track_corder = (flags & H5O_GINFO_FLAG_TRACK_CORDER) ? TRUE : FALSE;
/* Get the max. # of links to store compactly & the min. # of links to store densely */
UINT32DECODE(p, ginfo->max_compact)
UINT32DECODE(p, ginfo->min_dense)
/* Get the estimated # of entries & name lengths */
UINT32DECODE(p, ginfo->est_num_entries)
UINT32DECODE(p, ginfo->est_name_len)
#ifndef NDEBUG
HDassert((size_t)(p - start_p) == H5O_ginfo_size(f, ginfo));
}
#endif /* NDEBUG */
/* Set return value */
ret_value = ginfo;
done:
if(ret_value == NULL)
if(ginfo != NULL)
H5FL_FREE(H5O_ginfo_t, ginfo);
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5O_ginfo_decode() */
/*-------------------------------------------------------------------------
* Function: H5O_ginfo_encode
*
* Purpose: Encodes a message.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* koziol@ncsa.uiuc.edu
* Aug 30 2005
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
static herr_t
H5O_ginfo_encode(H5F_t UNUSED *f, uint8_t *p, const void *_mesg)
{
const H5O_ginfo_t *ginfo = (const H5O_ginfo_t *) _mesg;
unsigned char flags; /* Flags for encoding group info */
FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5O_ginfo_encode)
/* check args */
HDassert(p);
HDassert(ginfo);
#ifndef NDEBUG
{
uint8_t *start_p = p;
#endif /* NDEBUG */
/* Message version */
*p++ = H5O_GINFO_VERSION;
/* The flags for the group info */
flags = H5O_GINFO_FLAG_TRACK_NAME; /* Names are always tracked */
flags |= ginfo->track_corder ? H5O_GINFO_FLAG_TRACK_CORDER : 0;
*p++ = flags;
/* Store the max. # of links to store compactly & the min. # of links to store densely */
UINT32ENCODE(p, ginfo->max_compact)
UINT32ENCODE(p, ginfo->min_dense)
/* Estimated # of entries & name lengths */
UINT32ENCODE(p, ginfo->est_num_entries)
UINT32ENCODE(p, ginfo->est_name_len)
#ifndef NDEBUG
HDassert((size_t)(p - start_p) == H5O_ginfo_size(f, ginfo));
}
#endif /* NDEBUG */
FUNC_LEAVE_NOAPI(SUCCEED)
} /* end H5O_ginfo_encode() */
/*-------------------------------------------------------------------------
* Function: H5O_ginfo_copy
*
* Purpose: Copies a message from _MESG to _DEST, allocating _DEST if
* necessary.
*
* Return: Success: Ptr to _DEST
*
* Failure: NULL
*
* Programmer: Quincey Koziol
* koziol@ncsa.uiuc.edu
* Aug 30 2005
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
static void *
H5O_ginfo_copy(const void *_mesg, void *_dest, unsigned UNUSED update_flags)
{
const H5O_ginfo_t *ginfo = (const H5O_ginfo_t *)_mesg;
H5O_ginfo_t *dest = (H5O_ginfo_t *)_dest;
void *ret_value; /* Return value */
FUNC_ENTER_NOAPI_NOINIT(H5O_ginfo_copy)
/* check args */
HDassert(ginfo);
if(!dest && NULL == (dest = H5FL_MALLOC(H5O_ginfo_t)))
HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed")
/* copy */
*dest = *ginfo;
/* Set return value */
ret_value = dest;
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5O_ginfo_copy() */
/*-------------------------------------------------------------------------
* Function: H5O_ginfo_size
*
* Purpose: Returns the size of the raw message in bytes not counting
* the message type or size fields, but only the data fields.
* This function doesn't take into account alignment.
*
* Return: Success: Message data size in bytes without alignment.
*
* Failure: zero
*
* Programmer: Quincey Koziol
* koziol@ncsa.uiuc.edu
* Aug 30 2005
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
static size_t
H5O_ginfo_size(const H5F_t UNUSED *f, const void UNUSED *_mesg)
{
size_t ret_value; /* Return value */
FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5O_ginfo_size)
/* Set return value */
ret_value = 1 + /* Version */
1 + /* Flags */
4 + /* "Max compact" links */
4 + /* "Min dense" links */
4 + /* Estimated # of entries in group */
4; /* Estimated length of name of entry in group */
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5O_ginfo_size() */
/*-------------------------------------------------------------------------
* Function: H5O_ginfo_free
*
* Purpose: Free's the message
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* Tuesday, August 30, 2005
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
static herr_t
H5O_ginfo_free(void *mesg)
{
FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5O_ginfo_free)
HDassert(mesg);
H5FL_FREE(H5O_ginfo_t, mesg);
FUNC_LEAVE_NOAPI(SUCCEED)
} /* end H5O_ginfo_free() */
/*-------------------------------------------------------------------------
* Function: H5O_ginfo_debug
*
* Purpose: Prints debugging info for a message.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* koziol@ncsa.uiuc.edu
* Aug 30 2005
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
static herr_t
H5O_ginfo_debug(H5F_t UNUSED *f, hid_t UNUSED dxpl_id, const void *_mesg, FILE * stream,
int indent, int fwidth)
{
const H5O_ginfo_t *ginfo = (const H5O_ginfo_t *) _mesg;
FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5O_ginfo_debug)
/* check args */
HDassert(f);
HDassert(ginfo);
HDassert(stream);
HDassert(indent >= 0);
HDassert(fwidth >= 0);
HDfprintf(stream, "%*s%-*s %t\n", indent, "", fwidth,
"Track creation order of links:", ginfo->track_corder);
HDfprintf(stream, "%*s%-*s %u\n", indent, "", fwidth,
"Max. compact links:", ginfo->max_compact);
HDfprintf(stream, "%*s%-*s %u\n", indent, "", fwidth,
"Min. dense links:", ginfo->min_dense);
HDfprintf(stream, "%*s%-*s %u\n", indent, "", fwidth,
"Estimated # of objects in group:", ginfo->est_num_entries);
HDfprintf(stream, "%*s%-*s %u\n", indent, "", fwidth,
"Estimated length of object in group's name:", ginfo->est_name_len);
FUNC_LEAVE_NOAPI(SUCCEED)
} /* end H5O_ginfo_debug() */
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