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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Copyright by The HDF Group. *
* 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://hdfgroup.org/HDF5/doc/Copyright.html. If you do not have *
* access to either file, you may request a copy from help@hdfgroup.org. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*-------------------------------------------------------------------------
*
* Created: H5EAdblkpage.c
* Nov 20 2008
* Quincey Koziol <koziol@hdfgroup.org>
*
* Purpose: Data block page routines for extensible arrays.
*
*-------------------------------------------------------------------------
*/
/**********************/
/* Module Declaration */
/**********************/
#include "H5EAmodule.h" /* This source code file is part of the H5EA module */
/***********************/
/* Other Packages Used */
/***********************/
/***********/
/* Headers */
/***********/
#include "H5private.h" /* Generic Functions */
#include "H5Eprivate.h" /* Error handling */
#include "H5EApkg.h" /* Extensible Arrays */
#include "H5FLprivate.h" /* Free Lists */
#include "H5VMprivate.h" /* Vectors and arrays */
/****************/
/* Local Macros */
/****************/
/******************/
/* Local Typedefs */
/******************/
/********************/
/* Package Typedefs */
/********************/
/********************/
/* Local Prototypes */
/********************/
/*********************/
/* Package Variables */
/*********************/
/*****************************/
/* Library Private Variables */
/*****************************/
/*******************/
/* Local Variables */
/*******************/
/* Declare a free list to manage the H5EA_dblk_page_t struct */
H5FL_DEFINE_STATIC(H5EA_dblk_page_t);
/*-------------------------------------------------------------------------
* Function: H5EA__dblk_page_alloc
*
* Purpose: Allocate extensible array data block page
*
* Return: Non-NULL pointer to data block on success/NULL on failure
*
* Programmer: Quincey Koziol
* koziol@hdfgroup.org
* Nov 20 2008
*
*-------------------------------------------------------------------------
*/
BEGIN_FUNC(PKG, ERR,
H5EA_dblk_page_t *, NULL, NULL,
H5EA__dblk_page_alloc(H5EA_hdr_t *hdr, H5EA_sblock_t *parent))
/* Local variables */
H5EA_dblk_page_t *dblk_page = NULL; /* Extensible array data block page */
/* Check arguments */
HDassert(hdr);
/* Allocate memory for the data block */
if(NULL == (dblk_page = H5FL_CALLOC(H5EA_dblk_page_t)))
H5E_THROW(H5E_CANTALLOC, "memory allocation failed for extensible array data block page")
/* Share common array information */
if(H5EA__hdr_incr(hdr) < 0)
H5E_THROW(H5E_CANTINC, "can't increment reference count on shared array header")
dblk_page->hdr = hdr;
/* Set non-zero internal fields */
dblk_page->parent = parent;
/* Allocate buffer for elements in data block page */
if(NULL == (dblk_page->elmts = H5EA__hdr_alloc_elmts(hdr, hdr->dblk_page_nelmts)))
H5E_THROW(H5E_CANTALLOC, "memory allocation failed for data block page element buffer")
/* Set the return value */
ret_value = dblk_page;
CATCH
if(!ret_value)
if(dblk_page && H5EA__dblk_page_dest(dblk_page) < 0)
H5E_THROW(H5E_CANTFREE, "unable to destroy extensible array data block page")
END_FUNC(PKG) /* end H5EA__dblk_page_alloc() */
/*-------------------------------------------------------------------------
* Function: H5EA__dblk_page_create
*
* Purpose: Creates a new extensible array data block page in the file
*
* Return: Valid file address on success/HADDR_UNDEF on failure
*
* Programmer: Quincey Koziol
* koziol@hdfgroup.org
* Nov 20 2008
*
*-------------------------------------------------------------------------
*/
BEGIN_FUNC(PKG, ERR,
herr_t, SUCCEED, FAIL,
H5EA__dblk_page_create(H5EA_hdr_t *hdr, hid_t dxpl_id, H5EA_sblock_t *parent,
haddr_t addr))
/* Local variables */
H5EA_dblk_page_t *dblk_page = NULL; /* Extensible array data block page */
/* Sanity check */
HDassert(hdr);
/* Allocate the data block page */
if(NULL == (dblk_page = H5EA__dblk_page_alloc(hdr, parent)))
H5E_THROW(H5E_CANTALLOC, "memory allocation failed for extensible array data block page")
/* Set info about data block page on disk */
dblk_page->addr = addr;
dblk_page->size = H5EA_DBLK_PAGE_SIZE(hdr);
/* Clear any elements in data block page to fill value */
if((hdr->cparam.cls->fill)(dblk_page->elmts, (size_t)hdr->dblk_page_nelmts) < 0)
H5E_THROW(H5E_CANTSET, "can't set extensible array data block page elements to class's fill value")
/* Cache the new extensible array data block page */
if(H5AC_insert_entry(hdr->f, dxpl_id, H5AC_EARRAY_DBLK_PAGE, dblk_page->addr, dblk_page, H5AC__NO_FLAGS_SET) < 0)
H5E_THROW(H5E_CANTINSERT, "can't add extensible array data block page to cache")
CATCH
if(ret_value < 0)
if(dblk_page) {
/* Destroy data block page */
if(H5EA__dblk_page_dest(dblk_page) < 0)
H5E_THROW(H5E_CANTFREE, "unable to destroy extensible array data block page")
} /* end if */
END_FUNC(PKG) /* end H5EA__dblk_page_create() */
/*-------------------------------------------------------------------------
* Function: H5EA__dblk_page_protect
*
* Purpose: Convenience wrapper around protecting extensible array data
* block page
*
* Return: Non-NULL pointer to data block page on success/NULL on failure
*
* Programmer: Quincey Koziol
* koziol@hdfgroup.org
* Nov 20 2008
*
*-------------------------------------------------------------------------
*/
BEGIN_FUNC(PKG, ERR,
H5EA_dblk_page_t *, NULL, NULL,
H5EA__dblk_page_protect(H5EA_hdr_t *hdr, hid_t dxpl_id, H5EA_sblock_t *parent,
haddr_t dblk_page_addr, unsigned flags))
/* Local variables */
H5EA_dblk_page_cache_ud_t udata; /* Information needed for loading data block page */
/* Sanity check */
HDassert(hdr);
HDassert(H5F_addr_defined(dblk_page_addr));
/* only the H5AC__READ_ONLY_FLAG may be set */
HDassert((flags & (unsigned)(~H5AC__READ_ONLY_FLAG)) == 0);
/* Set up user data */
udata.hdr = hdr;
udata.parent = parent;
udata.dblk_page_addr = dblk_page_addr;
/* Protect the data block page */
if(NULL == (ret_value = (H5EA_dblk_page_t *)H5AC_protect(hdr->f, dxpl_id, H5AC_EARRAY_DBLK_PAGE, dblk_page_addr, &udata, flags)))
H5E_THROW(H5E_CANTPROTECT, "unable to protect extensible array data block page, address = %llu", (unsigned long long)dblk_page_addr)
CATCH
END_FUNC(PKG) /* end H5EA__dblk_page_protect() */
/*-------------------------------------------------------------------------
* Function: H5EA__dblk_page_unprotect
*
* Purpose: Convenience wrapper around unprotecting extensible array
* data block page
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* koziol@hdfgroup.org
* Nov 20 2008
*
*-------------------------------------------------------------------------
*/
BEGIN_FUNC(PKG, ERR,
herr_t, SUCCEED, FAIL,
H5EA__dblk_page_unprotect(H5EA_dblk_page_t *dblk_page, hid_t dxpl_id,
unsigned cache_flags))
/* Local variables */
/* Sanity check */
HDassert(dblk_page);
/* Unprotect the data block page */
if(H5AC_unprotect(dblk_page->hdr->f, dxpl_id, H5AC_EARRAY_DBLK_PAGE, dblk_page->addr, dblk_page, cache_flags) < 0)
H5E_THROW(H5E_CANTUNPROTECT, "unable to unprotect extensible array data block page, address = %llu", (unsigned long long)dblk_page->addr)
CATCH
END_FUNC(PKG) /* end H5EA__dblk_page_unprotect() */
/*-------------------------------------------------------------------------
* Function: H5EA__dblk_page_dest
*
* Purpose: Destroys an extensible array data block page in memory.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* koziol@hdfgroup.org
* Nov 20 2008
*
*-------------------------------------------------------------------------
*/
BEGIN_FUNC(PKG, ERR,
herr_t, SUCCEED, FAIL,
H5EA__dblk_page_dest(H5EA_dblk_page_t *dblk_page))
/* Sanity check */
HDassert(dblk_page);
HDassert(!dblk_page->has_hdr_depend);
/* Check if header field has been initialized */
if(dblk_page->hdr) {
/* Check if buffer for data block page elements has been initialized */
if(dblk_page->elmts) {
/* Free buffer for data block page elements */
if(H5EA__hdr_free_elmts(dblk_page->hdr, dblk_page->hdr->dblk_page_nelmts, dblk_page->elmts) < 0)
H5E_THROW(H5E_CANTFREE, "unable to free extensible array data block element buffer")
dblk_page->elmts = NULL;
} /* end if */
/* Decrement reference count on shared info */
if(H5EA__hdr_decr(dblk_page->hdr) < 0)
H5E_THROW(H5E_CANTDEC, "can't decrement reference count on shared array header")
dblk_page->hdr = NULL;
} /* end if */
/* Free the data block page itself */
dblk_page = H5FL_FREE(H5EA_dblk_page_t, dblk_page);
CATCH
END_FUNC(PKG) /* end H5EA__dblk_page_dest() */
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