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/*
* Copyright (C) 1997 NCSA
* All rights reserved.
*
* 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 <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_debug(H5F_t *f, const void *_mesg, FILE * stream,
intn indent, intn 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 */
NULL, /*get share method */
NULL, /*set share method */
H5O_layout_debug, /*debug the message */
}};
#define H5O_LAYOUT_VERSION 1
/* Interface initialization */
#define PABLO_MASK H5O_layout_mask
static intn interface_initialize_g = 0;
#define INTERFACE_INIT NULL
/*-------------------------------------------------------------------------
* 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;
intn i, version;
FUNC_ENTER(H5O_layout_decode, NULL);
/* check args */
assert(f);
assert(p);
assert (!sh);
/* decode */
if (NULL==(mesg = H5MM_calloc(sizeof(H5O_layout_t)))) {
HRETURN_ERROR (H5E_RESOURCE, H5E_NOSPACE, NULL,
"memory allocation failed");
}
/* Version */
version = *p++;
if (version!=H5O_LAYOUT_VERSION) {
HRETURN_ERROR(H5E_OHDR, H5E_CANTLOAD, NULL,
"bad version number for layout message");
}
/* Dimensionality */
mesg->ndims = *p++;
if (mesg->ndims>H5O_LAYOUT_NDIMS) {
H5MM_xfree(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 (i = 0; i < mesg->ndims; i++) {
UINT32DECODE(p, mesg->dim[i]);
}
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;
int i;
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 (i=0; i<5; i++) *p++ = 0;
/* data or B-tree address */
H5F_addr_encode(f, &p, &(mesg->addr));
/* dimension size */
for (i = 0; i < mesg->ndims; i++) {
UINT32ENCODE(p, mesg->dim[i]);
}
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=H5MM_calloc(sizeof(H5O_layout_t)))) {
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_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,
intn indent, intn fwidth)
{
const H5O_layout_t *mesg = (const H5O_layout_t *) _mesg;
intn i;
FUNC_ENTER(H5O_layout_debug, FAIL);
/* check args */
assert(f);
assert(mesg);
assert(stream);
assert(indent >= 0);
assert(fwidth >= 0);
fprintf(stream, "%*s%-*s ", indent, "", fwidth,
H5D_CHUNKED == mesg->type ? "B-tree address:" : "Data address:");
H5F_addr_print(stream, &(mesg->addr));
fprintf(stream, "\n");
fprintf(stream, "%*s%-*s %lu\n", indent, "", fwidth,
"Number of dimensions:",
(unsigned long) (mesg->ndims));
/* Size */
fprintf(stream, "%*s%-*s {", indent, "", fwidth,
"Size:");
for (i = 0; i < mesg->ndims; i++) {
fprintf(stream, "%s%lu", i ? ", " : "",
(unsigned long) (mesg->dim[i]));
}
fprintf(stream, "}\n");
FUNC_LEAVE(SUCCEED);
}
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