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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Copyright by The HDF Group. *
* 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 COPYING file, which can be found at the root of the source code *
* distribution tree, or in https://www.hdfgroup.org/licenses. *
* If you do not have access to either file, you may request a copy from *
* help@hdfgroup.org. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*-------------------------------------------------------------------------
*
* Created: H5Ocont.c
*
* Purpose: The object header continuation message. This
* message is only generated and read from within
* the H5O package. Therefore, do not change
* any definitions in this file!
*
*-------------------------------------------------------------------------
*/
#include "H5Omodule.h" /* This source code file is part of the H5O module */
#include "H5private.h" /* Generic Functions */
#include "H5Eprivate.h" /* Error handling */
#include "H5FLprivate.h" /* Free Lists */
#include "H5MFprivate.h" /* File memory management */
#include "H5Opkg.h" /* Object headers */
/* PRIVATE PROTOTYPES */
static void *H5O__cont_decode(H5F_t *f, H5O_t *open_oh, unsigned mesg_flags, unsigned *ioflags, size_t p_size,
const uint8_t *p);
static herr_t H5O__cont_encode(H5F_t *f, bool disable_shared, size_t H5_ATTR_UNUSED p_size, uint8_t *p,
const void *_mesg);
static size_t H5O__cont_size(const H5F_t *f, bool disable_shared, const void *_mesg);
static herr_t H5O__cont_free(void *mesg);
static herr_t H5O__cont_delete(H5F_t *f, H5O_t *open_oh, void *_mesg);
static herr_t H5O__cont_debug(H5F_t *f, const void *_mesg, FILE *stream, int indent, int fwidth);
/* This message derives from H5O message class */
const H5O_msg_class_t H5O_MSG_CONT[1] = {{
H5O_CONT_ID, /*message id number */
"hdr continuation", /*message name for debugging */
sizeof(H5O_cont_t), /*native message size */
0, /* messages are shareable? */
H5O__cont_decode, /*decode message */
H5O__cont_encode, /*encode message */
NULL, /*no copy method */
H5O__cont_size, /*size of header continuation */
NULL, /*reset method */
H5O__cont_free, /* free method */
H5O__cont_delete, /* file delete method */
NULL, /* link method */
NULL, /*set share method */
NULL, /*can share method */
NULL, /* pre copy native value to file */
NULL, /* copy native value to file */
NULL, /* post copy native value to file */
NULL, /* get creation index */
NULL, /* set creation index */
H5O__cont_debug /*debugging */
}};
/* Declare the free list for H5O_cont_t's */
H5FL_DEFINE(H5O_cont_t);
/*-------------------------------------------------------------------------
* Function: H5O__cont_decode
*
* Purpose: Decode the raw header continuation message.
*
* Return: Success: Ptr to the new native message
* Failure: NULL
*-------------------------------------------------------------------------
*/
static void *
H5O__cont_decode(H5F_t *f, H5O_t H5_ATTR_UNUSED *open_oh, unsigned H5_ATTR_UNUSED mesg_flags,
unsigned H5_ATTR_UNUSED *ioflags, size_t p_size, const uint8_t *p)
{
H5O_cont_t *cont = NULL;
const uint8_t *p_end = p + p_size - 1;
void *ret_value = NULL;
FUNC_ENTER_PACKAGE
assert(f);
assert(p);
/* Allocate space for the message */
if (NULL == (cont = H5FL_MALLOC(H5O_cont_t)))
HGOTO_ERROR(H5E_OHDR, H5E_NOSPACE, NULL, "memory allocation failed");
/* Decode */
if (H5_IS_BUFFER_OVERFLOW(p, H5F_sizeof_addr(f), p_end))
HGOTO_ERROR(H5E_OHDR, H5E_OVERFLOW, NULL, "ran off end of input buffer while decoding");
H5F_addr_decode(f, &p, &(cont->addr));
if (H5_IS_BUFFER_OVERFLOW(p, H5F_sizeof_size(f), p_end))
HGOTO_ERROR(H5E_OHDR, H5E_OVERFLOW, NULL, "ran off end of input buffer while decoding");
H5F_DECODE_LENGTH(f, p, cont->size);
cont->chunkno = 0;
/* Set return value */
ret_value = cont;
done:
if (NULL == ret_value && NULL != cont)
H5FL_FREE(H5O_cont_t, cont);
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5O__cont_decode() */
/*-------------------------------------------------------------------------
* Function: H5O__cont_encode
*
* Purpose: Encodes a continuation message.
*
* Return: Non-negative on success/Negative on failure
*
*-------------------------------------------------------------------------
*/
static herr_t
H5O__cont_encode(H5F_t *f, bool H5_ATTR_UNUSED disable_shared, size_t H5_ATTR_UNUSED p_size, uint8_t *p,
const void *_mesg)
{
const H5O_cont_t *cont = (const H5O_cont_t *)_mesg;
FUNC_ENTER_PACKAGE_NOERR
/* check args */
assert(f);
assert(p);
assert(cont);
assert(H5_addr_defined(cont->addr));
assert(cont->size > 0);
/* encode */
H5F_addr_encode(f, &p, cont->addr);
H5F_ENCODE_LENGTH(f, p, cont->size);
FUNC_LEAVE_NOAPI(SUCCEED)
} /* end H5O__cont_encode() */
/*-------------------------------------------------------------------------
* Function: H5O__cont_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
*
*-------------------------------------------------------------------------
*/
static size_t
H5O__cont_size(const H5F_t *f, bool H5_ATTR_UNUSED disable_shared, const void H5_ATTR_UNUSED *_mesg)
{
size_t ret_value = 0; /* Return value */
FUNC_ENTER_PACKAGE_NOERR
/* Set return value */
ret_value = (size_t)(H5F_SIZEOF_ADDR(f) + /* Continuation header address */
H5F_SIZEOF_SIZE(f)); /* Continuation header length */
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5O__cont_size() */
/*-------------------------------------------------------------------------
* Function: H5O__cont_free
*
* Purpose: Frees the message
*
* Return: Non-negative on success/Negative on failure
*
*-------------------------------------------------------------------------
*/
static herr_t
H5O__cont_free(void *mesg)
{
FUNC_ENTER_PACKAGE_NOERR
assert(mesg);
mesg = H5FL_FREE(H5O_cont_t, mesg);
FUNC_LEAVE_NOAPI(SUCCEED)
} /* end H5O__cont_free() */
/*-------------------------------------------------------------------------
* Function: H5O__cont_delete
*
* Purpose: Free file space referenced by message
*
* Return: Non-negative on success/Negative on failure
*
*-------------------------------------------------------------------------
*/
static herr_t
H5O__cont_delete(H5F_t *f, H5O_t *open_oh, void *_mesg)
{
H5O_cont_t *mesg = (H5O_cont_t *)_mesg;
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_PACKAGE
/* check args */
assert(f);
assert(mesg);
/* Notify the cache that the chunk has been deleted */
/* (releases the space for the chunk) */
if (H5O__chunk_delete(f, open_oh, mesg->chunkno) < 0)
HGOTO_ERROR(H5E_OHDR, H5E_CANTDELETE, FAIL, "unable to remove chunk from cache");
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5O__cont_delete() */
/*-------------------------------------------------------------------------
* Function: H5O__cont_debug
*
* Purpose: Prints debugging info.
*
* Return: Non-negative on success/Negative on failure
*
*-------------------------------------------------------------------------
*/
static herr_t
H5O__cont_debug(H5F_t H5_ATTR_UNUSED *f, const void *_mesg, FILE *stream, int indent, int fwidth)
{
const H5O_cont_t *cont = (const H5O_cont_t *)_mesg;
FUNC_ENTER_PACKAGE_NOERR
/* check args */
assert(f);
assert(cont);
assert(stream);
assert(indent >= 0);
assert(fwidth >= 0);
fprintf(stream, "%*s%-*s %" PRIuHADDR "\n", indent, "", fwidth, "Continuation address:", cont->addr);
fprintf(stream, "%*s%-*s %lu\n", indent, "", fwidth,
"Continuation size in bytes:", (unsigned long)(cont->size));
fprintf(stream, "%*s%-*s %d\n", indent, "", fwidth, "Points to chunk number:", (int)(cont->chunkno));
FUNC_LEAVE_NOAPI(SUCCEED)
} /* end H5O__cont_debug() */
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