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/*
* Copyright (C) 1998 NCSA
* All rights reserved.
*
* Programmer: Robb Matzke <matzke@llnl.gov>
* Wednesday, April 1, 1998
*
* Purpose: Functions that operate on a shared message. The shared
* message doesn't ever actually appear in the object header as
* a normal message. Instead, if a message is shared, the
* H5O_FLAG_SHARED bit is set and the message body is that
* defined here for H5O_SHARED. The message ID is the ID of the
* pointed-to message and the pointed-to message is stored in
* the global heap.
*/
#include <H5private.h>
#include <H5Eprivate.h>
#include <H5MMprivate.h>
#include <H5Oprivate.h>
static void *H5O_shared_decode (H5F_t*, const uint8*, H5HG_t *hobj);
static herr_t H5O_shared_encode (H5F_t*, uint8*, const void*);
static size_t H5O_shared_size (H5F_t*, const void*);
static herr_t H5O_shared_debug (H5F_t*, const void*, FILE*, intn, intn);
/* This message derives from H5O */
const H5O_class_t H5O_SHARED[1] = {{
H5O_SHARED_ID, /*message id number */
"shared", /*message name for debugging */
sizeof(H5O_shared_t), /*native message size */
H5O_shared_decode, /*decode method */
H5O_shared_encode, /*encode method */
NULL, /*no copy method */
H5O_shared_size, /*size method */
NULL, /*no reset method */
NULL, /*no share method */
H5O_shared_debug, /*debug method */
}};
/* Interface initialization */
#define PABLO_MASK H5O_shared_mask
static hbool_t interface_initialize_g = FALSE;
#define INTERFACE_INIT NULL
/*-------------------------------------------------------------------------
* Function: H5O_shared_decode
*
* Purpose: Decodes a shared object message and returns it.
*
* Return: Success: Ptr to a new shared object message.
*
* Failure: NULL
*
* Programmer: Robb Matzke
* Thursday, April 2, 1998
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
static void *
H5O_shared_decode (H5F_t *f, const uint8 *buf, H5HG_t __unused__ *hobj)
{
H5O_shared_t *mesg;
FUNC_ENTER (H5O_shared_decode, NULL);
/* Check args */
assert (f);
assert (buf);
assert (!hobj || !H5HG_defined (hobj));
/* Decode */
mesg = H5MM_xcalloc (1, sizeof *mesg);
H5F_addr_decode (f, &buf, &(mesg->addr));
INT32DECODE (buf, mesg->idx);
FUNC_LEAVE (mesg);
}
/*-------------------------------------------------------------------------
* Function: H5O_shared_encode
*
* Purpose: Encodes message _MESG into buffer BUF.
*
* Return: Success: SUCCEED
*
* Failure: FAIL
*
* Programmer: Robb Matzke
* Thursday, April 2, 1998
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
static herr_t
H5O_shared_encode (H5F_t *f, uint8 *buf/*out*/, const void *_mesg)
{
const H5O_shared_t *mesg = (const H5O_shared_t *)_mesg;
FUNC_ENTER (H5O_shared_encode, FAIL);
/* Check args */
assert (f);
assert (buf);
assert (mesg);
/* Encode */
H5F_addr_encode (f, &buf, &(mesg->addr));
INT32ENCODE (buf, mesg->idx);
FUNC_LEAVE (SUCCEED);
}
/*-------------------------------------------------------------------------
* Function: H5O_shared_size
*
* Purpose: Returns the length of a shared object message.
*
* Return: Success: Length
*
* Failure: 0
*
* Programmer: Robb Matzke
* Thursday, April 2, 1998
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
static size_t
H5O_shared_size (H5F_t *f, const void __unused__ *_mesg)
{
FUNC_ENTER (H5O_shared_size, 0);
FUNC_LEAVE (H5F_SIZEOF_ADDR(f)+4);
}
/*-------------------------------------------------------------------------
* Function: H5O_shared_debug
*
* Purpose: Prints debugging info for the message
*
* Return: Success: SUCCEED
*
* Failure: FAIL
*
* Programmer: Robb Matzke
* Thursday, April 2, 1998
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
static herr_t
H5O_shared_debug (H5F_t __unused__ *f, const void *_mesg,
FILE *stream, intn indent, intn fwidth)
{
const H5O_shared_t *mesg = (const H5O_shared_t *)_mesg;
FUNC_ENTER (H5O_shared_debug, FAIL);
/* Check args */
assert (f);
assert (mesg);
assert (stream);
assert (indent>=0);
assert (fwidth>=0);
fprintf (stream, "%*s%-*s ", indent, "", fwidth,
"Collection address:");
H5F_addr_print (stream, &(mesg->addr));
fprintf (stream, "\n");
fprintf (stream, "%*s%-*s %d\n", indent, "", fwidth,
"Object ID within collection:",
mesg->idx);
FUNC_LEAVE (SUCCEED);
}
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