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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: H5FAdblkpage.c
*
* Purpose: Data block page routines for fixed array.
*
*-------------------------------------------------------------------------
*/
/**********************/
/* Module Declaration */
/**********************/
#define H5FA_MODULE
/***********************/
/* Other Packages Used */
/***********************/
/***********/
/* Headers */
/***********/
#include "H5private.h" /* Generic Functions */
#include "H5Eprivate.h" /* Error handling */
#include "H5FApkg.h" /* Fixed Arrays */
#include "H5FLprivate.h" /* Free Lists */
/****************/
/* Local Macros */
/****************/
/******************/
/* Local Typedefs */
/******************/
/********************/
/* Package Typedefs */
/********************/
/********************/
/* Local Prototypes */
/********************/
/*********************/
/* Package Variables */
/*********************/
/*****************************/
/* Library Private Variables */
/*****************************/
/*******************/
/* Local Variables */
/*******************/
/* Declare a free list to manage the H5FA_dblk_page_t struct */
H5FL_DEFINE_STATIC(H5FA_dblk_page_t);
/* Declare a free list to manage the page elements */
H5FL_BLK_DEFINE(page_elmts);
/*-------------------------------------------------------------------------
* Function: H5FA__dblk_page_alloc
*
* Purpose: Allocate fixed array data block page
*
* Return: Non-NULL pointer to data block on success/NULL on failure
*
* Programmer: Vailin Choi
* Thursday, April 30, 2009
*
*-------------------------------------------------------------------------
*/
BEGIN_FUNC(PKG, ERR,
H5FA_dblk_page_t *, NULL, NULL,
H5FA__dblk_page_alloc(H5FA_hdr_t *hdr, size_t nelmts))
/* Local variables */
H5FA_dblk_page_t *dblk_page = NULL; /* Fixed array data block page */
/* Check arguments */
HDassert(hdr);
/* Allocate memory for the data block */
if(NULL == (dblk_page = H5FL_CALLOC(H5FA_dblk_page_t)))
H5E_THROW(H5E_CANTALLOC, "memory allocation failed for fixed array data block page")
/* Share common array information */
if(H5FA__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->nelmts = nelmts;
/* Allocate buffer for elements in data block page */
if(NULL == (dblk_page->elmts = H5FL_BLK_MALLOC(page_elmts, nelmts * hdr->cparam.cls->nat_elmt_size)))
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 && H5FA__dblk_page_dest(dblk_page) < 0)
H5E_THROW(H5E_CANTFREE, "unable to destroy fixed array data block page")
END_FUNC(PKG) /* end H5FA__dblk_page_alloc() */
/*-------------------------------------------------------------------------
* Function: H5FA__dblk_page_create
*
* Purpose: Creates a new fixed array data block page in the file
*
* Return: Valid file address on success/HADDR_UNDEF on failure
*
* Programmer: Vailin Choi
* Thursday, April 30, 2009
*
*-------------------------------------------------------------------------
*/
BEGIN_FUNC(PKG, ERR,
herr_t, SUCCEED, FAIL,
H5FA__dblk_page_create(H5FA_hdr_t *hdr, hid_t dxpl_id, haddr_t addr, size_t nelmts))
/* Local variables */
H5FA_dblk_page_t *dblk_page = NULL; /* Fixed array data block page */
#ifdef H5FA_DEBUG
HDfprintf(stderr, "%s: Called, addr = %a\n", FUNC, addr);
#endif /* H5FA_DEBUG */
/* Sanity check */
HDassert(hdr);
/* Allocate the data block page */
if(NULL == (dblk_page = H5FA__dblk_page_alloc(hdr, nelmts)))
H5E_THROW(H5E_CANTALLOC, "memory allocation failed for fixed array data block page")
/* Set info about data block page on disk */
dblk_page->addr = addr;
dblk_page->size = H5FA_DBLK_PAGE_SIZE(dblk_page, nelmts);
#ifdef H5FA_DEBUG
HDfprintf(stderr, "%s: dblk_page->size = %Zu\n", FUNC, dblk_page->size);
#endif /* H5FA_DEBUG */
/* Clear any elements in data block page to fill value */
if((hdr->cparam.cls->fill)(dblk_page->elmts, nelmts) < 0)
H5E_THROW(H5E_CANTSET, "can't set fixed array data block page elements to class's fill value")
/* Cache the new fixed array data block page */
if(H5AC_set(hdr->f, dxpl_id, H5AC_FARRAY_DBLK_PAGE, dblk_page->addr, dblk_page, H5AC__NO_FLAGS_SET) < 0)
H5E_THROW(H5E_CANTINSERT, "can't add fixed array data block page to cache")
CATCH
if(ret_value < 0)
if(dblk_page) {
/* Destroy data block page */
if(H5FA__dblk_page_dest(dblk_page) < 0)
H5E_THROW(H5E_CANTFREE, "unable to destroy fixed array data block page")
} /* end if */
END_FUNC(PKG) /* end H5FA__dblk_page_create() */
/*-------------------------------------------------------------------------
* Function: H5FA__dblk_page_protect
*
* Purpose: Convenience wrapper around protecting fixed array data
* block page
*
* Return: Non-NULL pointer to data block page on success/NULL on failure
*
* Programmer: Vailin Choi
* Thursday, April 30, 2009
*
*-------------------------------------------------------------------------
*/
BEGIN_FUNC(PKG, ERR,
H5FA_dblk_page_t *, NULL, NULL,
H5FA__dblk_page_protect(H5FA_hdr_t *hdr, hid_t dxpl_id, haddr_t dblk_page_addr,
size_t dblk_page_nelmts, H5AC_protect_t rw))
/* Local variables */
H5FA_dblk_page_cache_ud_t udata; /* Information needed for loading data block page */
#ifdef H5FA_DEBUG
HDfprintf(stderr, "%s: Called\n", FUNC);
#endif /* H5FA_DEBUG */
/* Sanity check */
HDassert(hdr);
HDassert(H5F_addr_defined(dblk_page_addr));
/* Set up user data */
udata.hdr = hdr;
udata.nelmts = dblk_page_nelmts;
/* Protect the data block page */
if(NULL == (ret_value = (H5FA_dblk_page_t *)H5AC_protect(hdr->f, dxpl_id, H5AC_FARRAY_DBLK_PAGE, dblk_page_addr, &udata, rw)))
H5E_THROW(H5E_CANTPROTECT, "unable to protect fixed array data block page, address = %llu", (unsigned long long)dblk_page_addr)
CATCH
END_FUNC(PKG) /* end H5FA__dblk_page_protect() */
/*-------------------------------------------------------------------------
* Function: H5FA__dblk_page_unprotect
*
* Purpose: Convenience wrapper around unprotecting fixed array
* data block page
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Vailin Choi
* Thursday, April 30, 2009
*
*-------------------------------------------------------------------------
*/
BEGIN_FUNC(PKG, ERR,
herr_t, SUCCEED, FAIL,
H5FA__dblk_page_unprotect(H5FA_dblk_page_t *dblk_page, hid_t dxpl_id,
unsigned cache_flags))
/* Local variables */
#ifdef H5FA_DEBUG
HDfprintf(stderr, "%s: Called\n", FUNC);
#endif /* H5FA_DEBUG */
/* Sanity check */
HDassert(dblk_page);
/* Unprotect the data block page */
if(H5AC_unprotect(dblk_page->hdr->f, dxpl_id, H5AC_FARRAY_DBLK_PAGE, dblk_page->addr, dblk_page, cache_flags) < 0)
H5E_THROW(H5E_CANTUNPROTECT, "unable to unprotect fixed array data block page, address = %llu", (unsigned long long)dblk_page->addr)
CATCH
END_FUNC(PKG) /* end H5FA__dblk_page_unprotect() */
/*-------------------------------------------------------------------------
* Function: H5FA__dblk_page_dest
*
* Purpose: Destroys a fixed array data block page in memory.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Vailin Choi
* Thursday, April 30, 2009
*
*-------------------------------------------------------------------------
*/
BEGIN_FUNC(PKG, ERR,
herr_t, SUCCEED, FAIL,
H5FA__dblk_page_dest(H5FA_dblk_page_t *dblk_page))
/* Sanity check */
HDassert(dblk_page);
/* 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 */
dblk_page->elmts = H5FL_BLK_FREE(page_elmts, dblk_page->elmts);
} /* end if */
/* Decrement reference count on shared info */
if(H5FA__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(H5FA_dblk_page_t, dblk_page);
CATCH
END_FUNC(PKG) /* end H5FA__dblk_page_dest() */
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