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Diffstat (limited to 'src/H5Fspace.c')
| -rw-r--r-- | src/H5Fspace.c | 211 |
1 files changed, 211 insertions, 0 deletions
diff --git a/src/H5Fspace.c b/src/H5Fspace.c new file mode 100644 index 0000000..1e2b238 --- /dev/null +++ b/src/H5Fspace.c @@ -0,0 +1,211 @@ +/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * + * 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: H5Fspace.c + * Dec 30 2013 + * Quincey Koziol + * + * Purpose: Space allocation routines for the file. + * + *------------------------------------------------------------------------- + */ + +/****************/ +/* Module Setup */ +/****************/ + +#include "H5Fmodule.h" /* This source code file is part of the H5F module */ + +/***********/ +/* Headers */ +/***********/ +#include "H5private.h" /* Generic Functions */ +#include "H5Eprivate.h" /* Error handling */ +#include "H5Fpkg.h" /* File access */ +#include "H5FDprivate.h" /* File drivers */ + +/****************/ +/* Local Macros */ +/****************/ + +/******************/ +/* Local Typedefs */ +/******************/ + +/********************/ +/* Package Typedefs */ +/********************/ + +/********************/ +/* Local Prototypes */ +/********************/ + +/*********************/ +/* Package Variables */ +/*********************/ + +/*****************************/ +/* Library Private Variables */ +/*****************************/ + +/*******************/ +/* Local Variables */ +/*******************/ + +/*------------------------------------------------------------------------- + * Function: H5F__alloc + * + * Purpose: Wrapper for H5FD_alloc, to make certain EOA changes are + * reflected in superblock. + * + * Note: When the metadata cache routines are updated to allow + * marking an entry dirty without a H5F_t*, this routine should + * be changed to take a H5F_super_t* directly. + * + * Return: Success: The format address of the new file memory. + * Failure: The undefined address HADDR_UNDEF + * + * Programmer: Quincey Koziol + * Monday, December 30, 2013 + * + *------------------------------------------------------------------------- + */ +haddr_t +H5F__alloc(H5F_t *f, H5F_mem_t type, hsize_t size, haddr_t *frag_addr, hsize_t *frag_size) +{ + haddr_t ret_value = 0; /* Return value */ + + FUNC_ENTER_PACKAGE + + /* check args */ + HDassert(f); + HDassert(f->shared); + HDassert(f->shared->lf); + HDassert(type >= H5FD_MEM_DEFAULT && type < H5FD_MEM_NTYPES); + HDassert(size > 0); + + /* Check whether the file can use temporary addresses */ + if (f->shared->use_tmp_space) { + haddr_t eoa; /* Current EOA for the file */ + + /* Get the EOA for the file */ + if (HADDR_UNDEF == (eoa = H5F_get_eoa(f, type))) + HGOTO_ERROR(H5E_FILE, H5E_CANTGET, HADDR_UNDEF, "Unable to get eoa") + + /* Check for overlapping into file's temporary allocation space */ + if (H5F_addr_gt((eoa + size), f->shared->tmp_addr)) + HGOTO_ERROR(H5E_FILE, H5E_BADRANGE, HADDR_UNDEF, + "'normal' file space allocation request will overlap into 'temporary' file space") + } /* end if */ + + /* Call the file driver 'alloc' routine */ + ret_value = H5FD_alloc(f->shared->lf, type, f, size, frag_addr, frag_size); + if (!H5F_addr_defined(ret_value)) + HGOTO_ERROR(H5E_FILE, H5E_CANTALLOC, HADDR_UNDEF, "file driver 'alloc' request failed") + + /* Mark EOA dirty */ + if (H5F_eoa_dirty(f) < 0) + HGOTO_ERROR(H5E_FILE, H5E_CANTMARKDIRTY, HADDR_UNDEF, "unable to mark EOA as dirty") + +done: + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5F__alloc() */ + +/*------------------------------------------------------------------------- + * Function: H5F__free + * + * Purpose: Wrapper for H5FD_free, to make certain EOA changes are + * reflected in superblock. + * + * Note: When the metadata cache routines are updated to allow + * marking an entry dirty without a H5F_t*, this routine should + * be changed to take a H5F_super_t* directly. + * + * Return: Success: Non-negative + * Failure: Negative + * + * Programmer: Quincey Koziol + * Monday, December 30, 2013 + * + *------------------------------------------------------------------------- + */ +herr_t +H5F__free(H5F_t *f, H5FD_mem_t type, haddr_t addr, hsize_t size) +{ + herr_t ret_value = SUCCEED; /* Return value */ + + FUNC_ENTER_PACKAGE + + /* Check args */ + HDassert(f); + HDassert(f->shared); + HDassert(f->shared->lf); + HDassert(type >= H5FD_MEM_DEFAULT && type < H5FD_MEM_NTYPES); + HDassert(size > 0); + + /* Call the file driver 'free' routine */ + if (H5FD_free(f->shared->lf, type, f, addr, size) < 0) + HGOTO_ERROR(H5E_FILE, H5E_CANTFREE, FAIL, "file driver 'free' request failed") + + /* Mark EOA dirty */ + if (H5F_eoa_dirty(f) < 0) + HGOTO_ERROR(H5E_FILE, H5E_CANTMARKDIRTY, FAIL, "unable to mark EOA as dirty") + +done: + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5F__free() */ + +/*------------------------------------------------------------------------- + * Function: H5F__try_extend + * + * Purpose: Extend a block at the end of the file, if possible. + * + * Note: When the metadata cache routines are updated to allow + * marking an entry dirty without a H5F_t*, this routine should + * be changed to take a H5F_super_t* directly. + * + * Return: Success: TRUE(1) - Block was extended + * FALSE(0) - Block could not be extended + * Failure: FAIL + * + * Programmer: Quincey Koziol + * Monday, 30 December, 2013 + * + *------------------------------------------------------------------------- + */ +htri_t +H5F__try_extend(H5F_t *f, H5FD_mem_t type, haddr_t blk_end, hsize_t extra_requested) +{ + htri_t ret_value = FALSE; /* Return value */ + + FUNC_ENTER_PACKAGE + + /* check args */ + HDassert(f); + HDassert(f->shared); + HDassert(f->shared->lf); + HDassert(type >= H5FD_MEM_DEFAULT && type < H5FD_MEM_NTYPES); + HDassert(extra_requested > 0); + + /* Extend the object by extending the underlying file */ + if ((ret_value = H5FD_try_extend(f->shared->lf, type, f, blk_end, extra_requested)) < 0) + HGOTO_ERROR(H5E_FILE, H5E_CANTEXTEND, FAIL, "driver try extend request failed") + + /* H5FD_try_extend() updates driver message and marks the superblock + * dirty, so no need to do it again here. + */ + +done: + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5F__try_extend() */ |