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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. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*
* Programmer: Robb Matzke <matzke@llnl.gov>
* Wednesday, October 8, 1997
*
* Purpose: Messages related to data layout.
*/
#include "H5private.h"
#include "H5Dprivate.h"
#include "H5Eprivate.h"
#include "H5FLprivate.h" /*Free Lists */
#include "H5MMprivate.h"
#include "H5Oprivate.h"
/* PRIVATE PROTOTYPES */
static void *H5O_layout_decode(H5F_t *f, const uint8_t *p, H5O_shared_t *sh);
static herr_t H5O_layout_encode(H5F_t *f, uint8_t *p, const void *_mesg);
static void *H5O_layout_copy(const void *_mesg, void *_dest);
static size_t H5O_layout_size(H5F_t *f, const void *_mesg);
static herr_t H5O_layout_free (void *_mesg);
static herr_t H5O_layout_debug(H5F_t *f, const void *_mesg, FILE * stream,
int indent, int fwidth);
/* This message derives from H5O */
const H5O_class_t H5O_LAYOUT[1] = {{
H5O_LAYOUT_ID, /*message id number */
"layout", /*message name for debugging */
sizeof(H5O_layout_t), /*native message size */
H5O_layout_decode, /*decode message */
H5O_layout_encode, /*encode message */
H5O_layout_copy, /*copy the native value */
H5O_layout_size, /*size of message on disk */
NULL, /*reset method */
H5O_layout_free, /*free the struct */
NULL, /*get share method */
NULL, /*set share method */
H5O_layout_debug, /*debug the message */
}};
/* A temporary solution for compatibility with v1.5. Added version 2 for
* layout. If data space has been allocated by v1.5, version is 2;
* otherwise it's 1. */
#define H5O_LAYOUT_VERSION 1
#define H5O_LAYOUT_VERSION_2 2
/* Interface initialization */
#define PABLO_MASK H5O_layout_mask
static int interface_initialize_g = 0;
#define INTERFACE_INIT NULL
/* Declare a free list to manage the H5O_layout_t struct */
H5FL_DEFINE(H5O_layout_t);
/*-------------------------------------------------------------------------
* Function: H5O_layout_decode
*
* Purpose: Decode an data layout message and return a pointer to a
* new one created with malloc().
*
* Return: Success: Ptr to new message in native order.
*
* Failure: NULL
*
* Programmer: Robb Matzke
* Wednesday, October 8, 1997
*
* Modifications:
* Robb Matzke, 1998-07-20
* Rearranged the message to add a version number at the beginning.
*
*-------------------------------------------------------------------------
*/
static void *
H5O_layout_decode(H5F_t *f, const uint8_t *p, H5O_shared_t UNUSED *sh)
{
H5O_layout_t *mesg = NULL;
int version;
unsigned u;
FUNC_ENTER(H5O_layout_decode, NULL);
/* check args */
assert(f);
assert(p);
assert (!sh);
/* decode */
if (NULL==(mesg = H5FL_ALLOC(H5O_layout_t,1))) {
HRETURN_ERROR (H5E_RESOURCE, H5E_NOSPACE, NULL,
"memory allocation failed");
}
/* Version. Here is a temporary solution for compatibility with v1.5.
* Added version 2 for layout. If data space hasn't been allocated by
* v1.5, version is 2; otherwise it's 1.
*/
version = *p++;
if (version!=H5O_LAYOUT_VERSION && version!=H5O_LAYOUT_VERSION_2) {
HRETURN_ERROR(H5E_OHDR, H5E_CANTLOAD, NULL,
"bad version number for layout message");
}
/* Dimensionality */
mesg->ndims = *p++;
if (mesg->ndims>H5O_LAYOUT_NDIMS) {
H5FL_FREE(H5O_layout_t,mesg);
HRETURN_ERROR(H5E_OHDR, H5E_CANTLOAD, NULL,
"dimensionality is too large");
}
/* Layout class */
mesg->type = *p++;
assert(H5D_CONTIGUOUS == mesg->type || H5D_CHUNKED == mesg->type);
/* Reserved bytes */
p += 5;
/* Address */
H5F_addr_decode(f, &p, &(mesg->addr));
/* Read the size */
for (u = 0; u < mesg->ndims; u++) {
UINT32DECODE(p, mesg->dim[u]);
}
FUNC_LEAVE(mesg);
}
/*-------------------------------------------------------------------------
* Function: H5O_layout_encode
*
* Purpose: Encodes a message.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Robb Matzke
* Wednesday, October 8, 1997
*
* Modifications:
* Robb Matzke, 1998-07-20
* Rearranged the message to add a version number at the beginning.
*
*-------------------------------------------------------------------------
*/
static herr_t
H5O_layout_encode(H5F_t *f, uint8_t *p, const void *_mesg)
{
const H5O_layout_t *mesg = (const H5O_layout_t *) _mesg;
unsigned u;
FUNC_ENTER(H5O_layout_encode, FAIL);
/* check args */
assert(f);
assert(mesg);
assert(mesg->ndims > 0 && mesg->ndims <= H5O_LAYOUT_NDIMS);
assert(p);
/* Version */
*p++ = H5O_LAYOUT_VERSION;
/* number of dimensions */
*p++ = mesg->ndims;
/* layout class */
*p++ = mesg->type;
/* reserved bytes should be zero */
for (u=0; u<5; u++)
*p++ = 0;
/* data or B-tree address */
H5F_addr_encode(f, &p, mesg->addr);
/* dimension size */
for (u = 0; u < mesg->ndims; u++) {
UINT32ENCODE(p, mesg->dim[u]);
}
FUNC_LEAVE(SUCCEED);
}
/*-------------------------------------------------------------------------
* Function: H5O_layout_copy
*
* Purpose: Copies a message from _MESG to _DEST, allocating _DEST if
* necessary.
*
* Return: Success: Ptr to _DEST
*
* Failure: NULL
*
* Programmer: Robb Matzke
* Wednesday, October 8, 1997
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
static void *
H5O_layout_copy(const void *_mesg, void *_dest)
{
const H5O_layout_t *mesg = (const H5O_layout_t *) _mesg;
H5O_layout_t *dest = (H5O_layout_t *) _dest;
FUNC_ENTER(H5O_layout_copy, NULL);
/* check args */
assert(mesg);
if (!dest && NULL==(dest=H5FL_ALLOC(H5O_layout_t,0))) {
HRETURN_ERROR (H5E_RESOURCE, H5E_NOSPACE, NULL,
"memory allocation failed");
}
/* copy */
*dest = *mesg;
FUNC_LEAVE((void *) dest);
}
/*-------------------------------------------------------------------------
* Function: H5O_layout_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 message alignment.
*
* Return: Success: Message data size in bytes
*
* Failure: 0
*
* Programmer: Robb Matzke
* Wednesday, October 8, 1997
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
static size_t
H5O_layout_size(H5F_t *f, const void *_mesg)
{
const H5O_layout_t *mesg = (const H5O_layout_t *) _mesg;
size_t ret_value = 0;
FUNC_ENTER(H5O_layout_size, 0);
/* check args */
assert(f);
assert(mesg);
assert(mesg->ndims > 0 && mesg->ndims <= H5O_LAYOUT_NDIMS);
ret_value = H5F_SIZEOF_ADDR(f) + /* B-tree address */
1 + /* max dimension index */
1 + /* layout class number */
6 + /* reserved bytes */
mesg->ndims * 4; /* alignment */
FUNC_LEAVE(ret_value);
}
/*-------------------------------------------------------------------------
* Function: H5O_layout_free
*
* Purpose: Free's the message
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* Saturday, March 11, 2000
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
static herr_t
H5O_layout_free (void *mesg)
{
FUNC_ENTER (H5O_layout_free, FAIL);
assert (mesg);
H5FL_FREE(H5O_layout_t,mesg);
FUNC_LEAVE (SUCCEED);
}
/*-------------------------------------------------------------------------
* Function: H5O_layout_debug
*
* Purpose: Prints debugging info for a message.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Robb Matzke
* Wednesday, October 8, 1997
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
static herr_t
H5O_layout_debug(H5F_t UNUSED *f, const void *_mesg, FILE * stream,
int indent, int fwidth)
{
const H5O_layout_t *mesg = (const H5O_layout_t *) _mesg;
unsigned u;
FUNC_ENTER(H5O_layout_debug, FAIL);
/* check args */
assert(f);
assert(mesg);
assert(stream);
assert(indent >= 0);
assert(fwidth >= 0);
HDfprintf(stream, "%*s%-*s %a\n", indent, "", fwidth,
H5D_CHUNKED == mesg->type ? "B-tree address:" : "Data address:",
mesg->addr);
HDfprintf(stream, "%*s%-*s %lu\n", indent, "", fwidth,
"Number of dimensions:",
(unsigned long) (mesg->ndims));
/* Size */
HDfprintf(stream, "%*s%-*s {", indent, "", fwidth, "Size:");
for (u = 0; u < mesg->ndims; u++) {
HDfprintf(stream, "%s%lu", u ? ", " : "",
(unsigned long) (mesg->dim[u]));
}
HDfprintf(stream, "}\n");
FUNC_LEAVE(SUCCEED);
}
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