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Diffstat (limited to 'src/H5EAdblkpage.c')
| -rw-r--r-- | src/H5EAdblkpage.c | 313 |
1 files changed, 313 insertions, 0 deletions
diff --git a/src/H5EAdblkpage.c b/src/H5EAdblkpage.c new file mode 100644 index 0000000..4b9cc9d --- /dev/null +++ b/src/H5EAdblkpage.c @@ -0,0 +1,313 @@ +/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * + * 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 */ +/**********************/ + +#define 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 "H5Vprivate.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)) + + /* 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 */ + /* <none> */ + + /* 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, haddr_t addr)) + + /* Local variables */ + H5EA_dblk_page_t *dblk_page = NULL; /* Extensible array data block page */ + +#ifdef QAK +HDfprintf(stderr, "%s: Called, addr = %a\n", FUNC, addr); +#endif /* QAK */ + + /* Sanity check */ + HDassert(hdr); + + /* Allocate the data block page */ + if(NULL == (dblk_page = H5EA__dblk_page_alloc(hdr))) + 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(dblk_page); +#ifdef QAK +HDfprintf(stderr, "%s: dblk_page->size = %Zu\n", FUNC, dblk_page->size); +#endif /* QAK */ + + /* 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_set(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, haddr_t dblk_page_addr, + H5AC_protect_t rw)) + + /* Local variables */ + +#ifdef QAK +HDfprintf(stderr, "%s: Called\n", FUNC); +#endif /* QAK */ + + /* Sanity check */ + HDassert(hdr); + HDassert(H5F_addr_defined(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, NULL, hdr, rw))) + 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 */ + +#ifdef QAK +HDfprintf(stderr, "%s: Called\n", FUNC); +#endif /* QAK */ + + /* 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 + * + *------------------------------------------------------------------------- + */ +/* ARGSUSED */ +BEGIN_FUNC(PKG, ERR, +herr_t, SUCCEED, FAIL, +H5EA__dblk_page_dest(H5EA_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 */ + 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 */ + (void)H5FL_FREE(H5EA_dblk_page_t, dblk_page); + +CATCH + +END_FUNC(PKG) /* end H5EA__dblk_page_dest() */ + |