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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 COPYING file, which can be found at the root of the source code *
* distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases. *
* If you do not have access to either file, you may request a copy from *
* help@hdfgroup.org. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*-------------------------------------------------------------------------
*
* Created: H5FAdblock.c
*
* Purpose: Data block routines for fixed arrays.
*
*-------------------------------------------------------------------------
*/
/**********************/
/* Module Declaration */
/**********************/
#include "H5FAmodule.h" /* This source code file is part of the 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 */
#include "H5MFprivate.h" /* File memory management */
/****************/
/* Local Macros */
/****************/
/******************/
/* Local Typedefs */
/******************/
/********************/
/* Package Typedefs */
/********************/
/********************/
/* Local Prototypes */
/********************/
/*********************/
/* Package Variables */
/*********************/
/*****************************/
/* Library Private Variables */
/*****************************/
/*******************/
/* Local Variables */
/*******************/
/* Declare a free list to manage the H5FA_dblock_t struct */
H5FL_DEFINE_STATIC(H5FA_dblock_t);
/* Declare a free list to manage the chunk elements */
H5FL_BLK_DEFINE(chunk_elmts);
/* Declare a free list to manage blocks of 'page init' bitmasks */
H5FL_BLK_DEFINE(fa_page_init);
/*-------------------------------------------------------------------------
* Function: H5FA__dblock_alloc
*
* Purpose: Allocate fixed array data block
*
* Return: Non-NULL pointer to data block on success/NULL on failure
*
* Programmer: Vailin Choi
* Thursday, April 30, 2009
*
*-------------------------------------------------------------------------
*/
BEGIN_FUNC(PKG, ERR, H5FA_dblock_t *, NULL, NULL, H5FA__dblock_alloc(H5FA_hdr_t *hdr))
/* Local variables */
H5FA_dblock_t *dblock = NULL; /* fixed array data block */
/* Check arguments */
HDassert(hdr);
HDassert(hdr->cparam.nelmts > 0);
/* Allocate memory for the data block */
if (NULL == (dblock = H5FL_CALLOC(H5FA_dblock_t)))
H5E_THROW(H5E_CANTALLOC, "memory allocation failed for fixed array data block")
/* Share common array information */
if (H5FA__hdr_incr(hdr) < 0)
H5E_THROW(H5E_CANTINC, "can't increment reference count on shared array header")
dblock->hdr = hdr;
/* Set non-zero internal fields */
dblock->dblk_page_nelmts = (size_t)1 << hdr->cparam.max_dblk_page_nelmts_bits;
/* Check if this data block should be paged */
if (hdr->cparam.nelmts > dblock->dblk_page_nelmts) {
/* Compute number of pages */
hsize_t npages = ((hdr->cparam.nelmts + dblock->dblk_page_nelmts) - 1) / dblock->dblk_page_nelmts;
/* Safely assign the number of pages */
H5_CHECKED_ASSIGN(dblock->npages, size_t, npages, hsize_t);
/* Sanity check that we have at least 1 page */
HDassert(dblock->npages > 0);
/* Compute size of 'page init' flag array, in bytes */
dblock->dblk_page_init_size = (dblock->npages + 7) / 8;
HDassert(dblock->dblk_page_init_size > 0);
/* Allocate space for 'page init' flags */
if (NULL == (dblock->dblk_page_init = H5FL_BLK_CALLOC(fa_page_init, dblock->dblk_page_init_size)))
H5E_THROW(H5E_CANTALLOC, "memory allocation failed for page init bitmask")
/* Compute data block page size */
dblock->dblk_page_size = (dblock->dblk_page_nelmts * hdr->cparam.raw_elmt_size) + H5FA_SIZEOF_CHKSUM;
/* Compute the # of elements on last page */
if (0 == hdr->cparam.nelmts % dblock->dblk_page_nelmts)
dblock->last_page_nelmts = dblock->dblk_page_nelmts;
else
dblock->last_page_nelmts = (size_t)(hdr->cparam.nelmts % dblock->dblk_page_nelmts);
} /* end if */
else {
hsize_t dblk_size = hdr->cparam.nelmts * hdr->cparam.cls->nat_elmt_size;
/* Allocate buffer for elements in data block */
H5_CHECK_OVERFLOW(dblk_size, /* From: */ hsize_t, /* To: */ size_t);
if (NULL == (dblock->elmts = H5FL_BLK_MALLOC(chunk_elmts, (size_t)dblk_size)))
H5E_THROW(H5E_CANTALLOC, "memory allocation failed for data block element buffer")
} /* end else */
/* Set the return value */
ret_value = dblock;
CATCH
if (!ret_value)
if (dblock && H5FA__dblock_dest(dblock) < 0)
H5E_THROW(H5E_CANTFREE, "unable to destroy fixed array data block")
END_FUNC(PKG) /* end H5FA__dblock_alloc() */
/*-------------------------------------------------------------------------
* Function: H5FA__dblock_create
*
* Purpose: Creates a fixed array data block in the file
*
* Return: Valid file address on success/HADDR_UNDEF on failure
*
* Programmer: Vailin Choi
* Thursday, April 30, 2009
*
*-------------------------------------------------------------------------
*/
BEGIN_FUNC(PKG, ERR, haddr_t, HADDR_UNDEF, HADDR_UNDEF,
H5FA__dblock_create(H5FA_hdr_t *hdr, hbool_t *hdr_dirty))
/* Local variables */
H5FA_dblock_t *dblock = NULL; /* Fixed array data block */
haddr_t dblock_addr; /* Fixed array data block address */
hbool_t inserted = FALSE; /* Whether the header was inserted into cache */
/* Sanity check */
HDassert(hdr);
HDassert(hdr_dirty);
/* Allocate the data block */
if (NULL == (dblock = H5FA__dblock_alloc(hdr)))
H5E_THROW(H5E_CANTALLOC, "memory allocation failed for fixed array data block")
/* Set size of data block on disk */
hdr->stats.dblk_size = dblock->size = H5FA_DBLOCK_SIZE(dblock);
/* Allocate space for the data block on disk */
if (HADDR_UNDEF == (dblock_addr = H5MF_alloc(hdr->f, H5FD_MEM_FARRAY_DBLOCK, (hsize_t)dblock->size)))
H5E_THROW(H5E_CANTALLOC, "file allocation failed for fixed array data block")
dblock->addr = dblock_addr;
/* Don't initialize elements if paged */
if (!dblock->npages)
/* Clear any elements in data block to fill value */
if ((hdr->cparam.cls->fill)(dblock->elmts, (size_t)hdr->cparam.nelmts) < 0)
H5E_THROW(H5E_CANTSET, "can't set fixed array data block elements to class's fill value")
/* Cache the new fixed array data block */
if (H5AC_insert_entry(hdr->f, H5AC_FARRAY_DBLOCK, dblock_addr, dblock, H5AC__NO_FLAGS_SET) < 0)
H5E_THROW(H5E_CANTINSERT, "can't add fixed array data block to cache")
inserted = TRUE;
/* Add data block as child of 'top' proxy */
if (hdr->top_proxy) {
if (H5AC_proxy_entry_add_child(hdr->top_proxy, hdr->f, dblock) < 0)
H5E_THROW(H5E_CANTSET, "unable to add fixed array entry as child of array proxy")
dblock->top_proxy = hdr->top_proxy;
} /* end if */
/* Mark the header dirty (for updating statistics) */
*hdr_dirty = TRUE;
/* Set address of data block to return */
ret_value = dblock_addr;
CATCH
if (!H5F_addr_defined(ret_value))
if (dblock) {
/* Remove from cache, if inserted */
if (inserted)
if (H5AC_remove_entry(dblock) < 0)
H5E_THROW(H5E_CANTREMOVE, "unable to remove fixed array data block from cache")
/* Release data block's disk space */
if (H5F_addr_defined(dblock->addr) &&
H5MF_xfree(hdr->f, H5FD_MEM_FARRAY_DBLOCK, dblock->addr, (hsize_t)dblock->size) < 0)
H5E_THROW(H5E_CANTFREE, "unable to release fixed array data block")
/* Destroy data block */
if (H5FA__dblock_dest(dblock) < 0)
H5E_THROW(H5E_CANTFREE, "unable to destroy fixed array data block")
} /* end if */
END_FUNC(PKG) /* end H5FA__dblock_create() */
/*-------------------------------------------------------------------------
* Function: H5FA__dblock_protect
*
* Purpose: Convenience wrapper around protecting fixed array data block
*
* Return: Non-NULL pointer to data block on success/NULL on failure
*
* Programmer: Vailin Choi
* Thursday, April 30, 2009
*
*-------------------------------------------------------------------------
*/
BEGIN_FUNC(PKG, ERR, H5FA_dblock_t *, NULL, NULL,
H5FA__dblock_protect(H5FA_hdr_t *hdr, haddr_t dblk_addr, unsigned flags))
/* Local variables */
H5FA_dblock_t * dblock; /* Fixed array data block */
H5FA_dblock_cache_ud_t udata; /* Information needed for loading data block */
/* Sanity check */
HDassert(hdr);
HDassert(H5F_addr_defined(dblk_addr));
/* only the H5AC__READ_ONLY_FLAG flag is permitted */
HDassert((flags & (unsigned)(~H5AC__READ_ONLY_FLAG)) == 0);
/* Set up user data */
udata.hdr = hdr;
udata.dblk_addr = dblk_addr;
/* Protect the data block */
if (NULL ==
(dblock = (H5FA_dblock_t *)H5AC_protect(hdr->f, H5AC_FARRAY_DBLOCK, dblk_addr, &udata, flags)))
H5E_THROW(H5E_CANTPROTECT, "unable to protect fixed array data block, address = %llu",
(unsigned long long)dblk_addr)
/* Create top proxy, if it doesn't exist */
if (hdr->top_proxy && NULL == dblock->top_proxy) {
/* Add data block as child of 'top' proxy */
if (H5AC_proxy_entry_add_child(hdr->top_proxy, hdr->f, dblock) < 0)
H5E_THROW(H5E_CANTSET, "unable to add fixed array entry as child of array proxy")
dblock->top_proxy = hdr->top_proxy;
} /* end if */
/* Set return value */
ret_value = dblock;
CATCH
/* Clean up on error */
if (!ret_value)
/* Release the data block, if it was protected */
if (dblock &&
H5AC_unprotect(hdr->f, H5AC_FARRAY_DBLOCK, dblock->addr, dblock, H5AC__NO_FLAGS_SET) < 0)
H5E_THROW(H5E_CANTUNPROTECT, "unable to unprotect fixed array data block, address = %llu",
(unsigned long long)dblock->addr)
END_FUNC(PKG) /* end H5FA__dblock_protect() */
/*-------------------------------------------------------------------------
* Function: H5FA__dblock_unprotect
*
* Purpose: Convenience wrapper around unprotecting fixed array data block
*
* Return: SUCCEED/FAIL
*
* Programmer: Vailin Choi
* Thursday, April 30, 2009
*
*-------------------------------------------------------------------------
*/
BEGIN_FUNC(PKG, ERR, herr_t, SUCCEED, FAIL,
H5FA__dblock_unprotect(H5FA_dblock_t *dblock, unsigned cache_flags))
/* Local variables */
/* Sanity check */
HDassert(dblock);
/* Unprotect the data block */
if (H5AC_unprotect(dblock->hdr->f, H5AC_FARRAY_DBLOCK, dblock->addr, dblock, cache_flags) < 0)
H5E_THROW(H5E_CANTUNPROTECT, "unable to unprotect fixed array data block, address = %llu",
(unsigned long long)dblock->addr)
CATCH
END_FUNC(PKG) /* end H5FA__dblock_unprotect() */
/*-------------------------------------------------------------------------
* Function: H5FA__dblock_delete
*
* Purpose: Delete a data block
*
* Return: SUCCEED/FAIL
*
* Programmer: Vailin Choi
* Thursday, April 30, 2009
*
*-------------------------------------------------------------------------
*/
BEGIN_FUNC(PKG, ERR, herr_t, SUCCEED, FAIL, H5FA__dblock_delete(H5FA_hdr_t *hdr, haddr_t dblk_addr))
/* Local variables */
H5FA_dblock_t *dblock = NULL; /* Pointer to data block */
/* Sanity check */
HDassert(hdr);
HDassert(H5F_addr_defined(dblk_addr));
/* Protect data block */
if (NULL == (dblock = H5FA__dblock_protect(hdr, dblk_addr, H5AC__NO_FLAGS_SET)))
H5E_THROW(H5E_CANTPROTECT, "unable to protect fixed array data block, address = %llu",
(unsigned long long)dblk_addr)
/* Check if data block is paged */
if (dblock->npages) {
haddr_t dblk_page_addr; /* Address of each data block page */
size_t u; /* Local index variable */
/* Set up initial state */
dblk_page_addr = dblk_addr + H5FA_DBLOCK_PREFIX_SIZE(dblock);
/* Iterate over pages in data block */
for (u = 0; u < dblock->npages; u++) {
/* Evict the data block page from the metadata cache */
/* (OK to call if it doesn't exist in the cache) */
if (H5AC_expunge_entry(hdr->f, H5AC_FARRAY_DBLK_PAGE, dblk_page_addr, H5AC__NO_FLAGS_SET) < 0)
H5E_THROW(H5E_CANTEXPUNGE, "unable to remove array data block page from metadata cache")
/* Advance to next page address */
dblk_page_addr += dblock->dblk_page_size;
} /* end for */
} /* end if */
CATCH
/* Finished deleting data block in metadata cache */
if (dblock && H5FA__dblock_unprotect(dblock, H5AC__DIRTIED_FLAG | H5AC__DELETED_FLAG |
H5AC__FREE_FILE_SPACE_FLAG) < 0)
H5E_THROW(H5E_CANTUNPROTECT, "unable to release fixed array data block")
END_FUNC(PKG) /* end H5FA__dblock_delete() */
/*-------------------------------------------------------------------------
* Function: H5FA__dblock_dest
*
* Purpose: Destroys a fixed array data block in memory.
*
* Return: SUCCEED/FAIL
*
* Programmer: Vailin Choi
* Thursday, April 30, 2009
*
*-------------------------------------------------------------------------
*/
BEGIN_FUNC(PKG, ERR, herr_t, SUCCEED, FAIL, H5FA__dblock_dest(H5FA_dblock_t *dblock))
/* Sanity check */
HDassert(dblock);
/* Check if shared header field has been initialized */
if (dblock->hdr) {
/* Check if we've got elements in the data block */
if (dblock->elmts && !dblock->npages) {
/* Free buffer for data block elements */
HDassert(dblock->hdr->cparam.nelmts > 0);
dblock->elmts = H5FL_BLK_FREE(chunk_elmts, dblock->elmts);
} /* end if */
/* Check if data block is paged */
if (dblock->npages) {
/* Free buffer for 'page init' bitmask, if there is one */
HDassert(dblock->dblk_page_init_size > 0);
if (dblock->dblk_page_init)
dblock->dblk_page_init = H5FL_BLK_FREE(fa_page_init, dblock->dblk_page_init);
} /* end if */
/* Decrement reference count on shared info */
if (H5FA__hdr_decr(dblock->hdr) < 0)
H5E_THROW(H5E_CANTDEC, "can't decrement reference count on shared array header")
dblock->hdr = NULL;
} /* end if */
/* Sanity check */
HDassert(NULL == dblock->top_proxy);
/* Free the data block itself */
dblock = H5FL_FREE(H5FA_dblock_t, dblock);
CATCH
END_FUNC(PKG) /* end H5FA__dblock_dest() */
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